Surgical instrument platform

文档序号：977791 发布日期：2020-11-06 浏览：5次中文

阅读说明：本技术 手术器械平台 (Surgical instrument platform ) 是由李涛何超周金龙于 2020-08-26 设计创作，主要内容包括：本发明涉及一种手术器械平台,包括底座、调整组件、器械组件,调整组件设置于底座上并包括机械臂,器械组件包括手术器械和器械平台,手术器械可拆卸地设置在器械平台上,器械平台与机械臂的末端连接,手术器械包括依次连接的操作端、连接组件、末端执行器,以及传感部件、驱动部件、传动部件和控制部件,连接组件包括第一、第二连接结构,第一连接结构的近端连接操作端,远端连接器械平台,第二连接结构的远端连接末端执行器,近端连接器械平台。传感部件检测第一连接结构的运动,控制部件根据第一连接结构的运动控制驱动部件通过传动部件驱动第二连接结构运动。本发明的优点为手术操作更加精准和可靠,手术操作更省力和方便。(The invention relates to a surgical instrument platform, which comprises a base, an adjusting assembly and an instrument assembly, wherein the adjusting assembly is arranged on the base and comprises a mechanical arm, the instrument assembly comprises a surgical instrument and an instrument platform, the surgical instrument is detachably arranged on the instrument platform, the instrument platform is connected with the tail end of the mechanical arm, the surgical instrument comprises an operating end, a connecting assembly, a tail end actuator, a sensing component, a driving component, a transmission component and a control component which are sequentially connected, the connecting assembly comprises a first connecting structure and a second connecting structure, the near end of the first connecting structure is connected with the operating end, the far end of the first connecting structure is connected with the instrument platform, the far end of the second connecting structure is connected with the tail end actuator, and. The sensing component detects the movement of the first connecting structure, and the control component controls the driving component to drive the second connecting structure to move through the transmission component according to the movement of the first connecting structure. The invention has the advantages of more accurate and reliable operation and more labor-saving and convenient operation.)

1. A surgical instrument platform, comprising:

a base;

an adjustment assembly disposed on the base and including a mechanical arm; and

the instrument assembly comprises a surgical instrument and an instrument platform, the surgical instrument is detachably arranged on the instrument platform, and the instrument platform is connected with the tail end of the mechanical arm so as to adjust the pose of the instrument assembly through the mechanical arm;

wherein: the surgical instrument comprises an operation end, a connecting assembly and an end effector which are sequentially connected from near to far; the connection assembly includes a first connection structure at a proximal end and a second connection structure at a distal end; the proximal end of the first connecting structure is connected with the operating end, and the distal end of the first connecting structure is connected with the instrument platform; the distal end of the second connecting structure is connected with the end effector, and the proximal end of the second connecting structure is connected with the instrument platform;

the surgical instrument further comprises a sensing component, a driving component, a transmission component and a control component; the sensing part is used for detecting the motion of the first connecting structure and sending the obtained motion detection information of the first connecting structure to the control part; the control part is used for controlling the driving part to output power according to the motion detection information of the first connecting structure; the driving component is used for driving the second connecting structure to move through the transmission component.

2. A surgical instrument platform as recited in claim 1, wherein the first connection structure includes a first flexible structure and the second connection structure includes a second flexible structure, the first and second flexible structures each having at least one degree of rotational freedom;

wherein: the sensing part is also used for detecting the rotation of the first flexible structure and sending the obtained rotation detection information to the control part; the control part is further used for controlling the driving part to output power according to the rotation detection information of the first flexible structure; the driving component is also used for driving the second flexible structure to rotate in the opposite direction along with the rotation of the first flexible structure through the transmission component.

3. A surgical instrument platform as recited in claim 2, wherein the connection assembly further includes a third flexible structure positioned between the second connection structure and the end effector, the third flexible structure having at least one degree of rotational freedom to rotate the end effector; the operation end comprises a control structure, a wrist structure and a holding structure which are connected in sequence; the control structure is arranged on the wrist structure and used for driving the wrist structure to move; the proximal end of the first connecting structure is connected with the holding structure, and the wrist structure has at least one rotational degree of freedom;

wherein: the sensing part is used for detecting the rotation of the wrist structure and sending the obtained rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the wrist structure; the driving part is used for driving the third flexible structure to rotate in the same direction along with the rotation of the wrist structure through the transmission part.

4. A surgical instrument platform as recited in claim 2, wherein the first connection structure includes a first outer tube and a first inner tube, and the second connection structure includes a second outer tube and a second inner tube; the first outer pipe is sleeved on the first inner pipe, and the second outer pipe is sleeved on the second inner pipe;

the proximal end of the first inner tube is connected with the operating end, and the distal end of the first inner tube is a free end and is used for being inserted into the first outer tube; the proximal end of the first outer tube is a free end and is arranged outside the instrument platform, and the distal end of the first outer tube is connected with the instrument platform;

the distal end of the second inner tube is connected with the end effector, and the proximal end of the second inner tube is a free end and is used for being inserted into the second outer tube; the proximal end of the second outer tube is connected with the instrument platform, and the distal end of the second outer tube is a free end and is arranged outside the instrument platform;

the first flexible structure is disposed on the first outer tube, and the second flexible structure is disposed on the second outer tube.

5. A surgical instrument platform as recited in claim 4, wherein the distal end of the second inner tube is connected to the end effector by a third flexible structure having at least one degree of rotational freedom; and/or the distal end of the first inner tube extends into the interior of the instrument platform and the proximal end of the second inner tube extends into the interior of the instrument platform.

6. A surgical instrument platform according to claim 2 or 3, wherein the first flexible structure has two rotational degrees of freedom, one about a first axis and one about a second axis;

the second flexible structure has two rotational degrees of freedom which are respectively a rotational degree of freedom rotating around a third axis and a rotational degree of freedom rotating around a fourth axis;

the third axis is parallel to the first axis, the fourth axis is parallel to the second axis, and the first axis is perpendicular to the second axis;

when the first flexible structure is driven to rotate around the first axis, the sensing part is used for detecting the rotation of the first flexible structure around the first axis and sending the obtained first rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the first rotation detection information; the driving component is used for driving the second flexible structure to rotate around the third axis in a direction opposite to the rotation direction of the first flexible structure through the transmission component;

when the first flexible structure is driven to rotate around the second axis, the sensing part is used for detecting the rotation of the first flexible structure around the second axis and sending the obtained second rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the second rotation detection information; the driving component is used for driving the second flexible structure to rotate around the fourth axis in a direction opposite to the rotating direction of the first flexible structure through the transmission component.

7. A surgical instrument platform according to claim 4, wherein the first inner tube is movable relative to the first outer tube and the second inner tube is movable relative to the second outer tube;

the sensing part is also used for detecting the movement of the first inner tube and/or the operation end and sending the obtained movement detection information of the first inner tube and/or the operation end to the control part; the control part is used for controlling the driving part to output power according to the movement detection information of the first inner pipe and/or the operation end; the driving component is used for driving the second inner pipe to move through the transmission component.

8. A surgical instrument platform according to claim 7, wherein the first inner tube includes a first proximal section, a first middle section, and a first distal section connected in series from proximal to distal, the first proximal section being connected to the operating end; the first proximal section and the first distal section are both rigid members, and the first midsection is a flexible member; the first outer tube comprises a first proximal end part, a first flexible structure and a first distal end part which are connected in sequence from near to far, and the first distal end part is connected with the instrument platform;

the sum of the axial lengths of the first proximal section and the first middle section is greater than the sum of the axial lengths of the first proximal portion and the first flexible structure; the first distal section is received in the first distal portion and extends into the instrument platform.

9. A surgical instrument platform as recited in claim 8, wherein the proximal end of the first proximal section includes a first sub-inner tube having an outer diameter no greater than an inner diameter of the first proximal portion and a second sub-inner tube having an outer diameter greater than the inner diameter of the first proximal portion; the sum of the axial lengths of the first sub-inner tube and the first middle section is greater than the sum of the axial lengths of the first proximal end portion and the first flexible structure.

10. A surgical instrument platform according to claim 7, wherein the second inner tube includes a second proximal section, a second middle section, and a second distal section connected in series from proximal to distal; the second proximal section and the second distal section are both rigid members, and the second midsection is a flexible member; the second distal section is coupled to the end effector and the second proximal section extends into the interior of the instrument platform and is coupled to the drive member;

the second outer tube comprises a second proximal end part, a second flexible structure and a second distal end part which are connected in sequence from the near to the far, and the second proximal end part is connected with the instrument platform; the second proximal portion is connected to the instrument platform; the sum of the axial lengths of the second central section and the second distal section is greater than the sum of the axial lengths of the second flexible structure and the second distal portion.

11. A surgical instrument platform according to claim 10, wherein a distal end of the second distal end section is comprised of a third sub-inner tube having an outer diameter no greater than an inner diameter of the second distal end portion and a fourth sub-inner tube having an outer diameter greater than the inner diameter of the second distal end portion; the sum of the axial lengths of the third sub-inner tube and the second mid-section is greater than the sum of the axial lengths of the second distal end portion and the second flexible structure.

12. A surgical instrument platform according to claim 3, wherein the wrist structure has two rotational degrees of freedom, one about a fifth axis and one about a sixth axis;

the third flexible structure has two rotational degrees of freedom which are respectively a rotational degree of freedom rotating around a seventh axis and a rotational degree of freedom rotating around an eighth axis;

the fifth axis is parallel to the seventh axis, the sixth axis is parallel to the eighth axis, and the fifth axis is perpendicular to the sixth axis;

when the wrist structure is driven by the control structure to rotate around the fifth axis, the sensing part is used for detecting the rotation of the wrist structure around the fifth axis and sending the obtained third rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the third rotation detection information; the driving component is used for driving the third flexible structure to rotate around the seventh axis in the same direction as the rotation direction of the wrist structure through the transmission component;

when the wrist structure is driven by the control structure to rotate around the sixth axis, the sensing part is used for detecting the rotation of the wrist structure around the sixth axis and sending the obtained fourth rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the fourth rotation detection information; the driving component is used for driving the third flexible structure to rotate around the eighth axis in the same direction as the rotation direction of the wrist structure through the transmission component.

13. A surgical instrument platform as recited in claim 3, wherein the steering structure has a rotational degree of freedom about a ninth axis, and the end effector has a rotational degree of freedom about a tenth axis; the control structure is rotatably arranged on the wrist structure; the end effector is rotatably connected with the third flexible structure;

when the control structure performs autorotation motion around the ninth axis, the sensing component is used for detecting the autorotation of the control structure and sending the obtained autorotation detection information of the control structure to the control component; the control component is used for controlling the driving component to output power according to the autorotation detection information of the control structure; the driving component is used for driving the end effector to do autorotation motion through the transmission component; the rotation direction of the end effector is the same as that of the control structure.

14. A surgical instrument platform as recited in claim 2 or 3, wherein the end effector includes at least one tool flap; the operating end also comprises an opening and closing control structure which is arranged on the control structure and can perform opening and closing movement;

when the opening and closing control structure makes opening and closing movement, the sensing part is used for detecting the opening and closing movement of the opening and closing control structure and sending the obtained opening and closing detection information to the control part; the control part is used for controlling the driving part to output power according to the opening and closing detection information; the driving component is used for driving the tool valve to open and close through the transmission component; the opening and closing movement mode of the opening and closing control structure is the same as the opening and closing movement mode of the end effector.

15. A surgical instrument platform as recited in claim 3, wherein the sensing component includes a plurality of sensors for detecting movement of the manipulation end and movement of the first flexible structure.

16. A surgical instrument platform as recited in claim 15, wherein the sensing component includes a first sensor, a second sensor, a third sensor, a fourth sensor, a fifth sensor, a sixth sensor, and a seventh sensor;

the first sensor is for detecting a pitch motion of the wrist structure; the second sensor is for detecting a yaw movement of the wrist structure; the third sensor is used for detecting the opening and closing movement of the operating end; the fourth sensor is used for detecting the autorotation motion of the control structure; the fifth sensor is used for detecting the pitching motion of the first flexible structure; the sixth sensor is used for detecting the deflection movement of the first flexible structure; the seventh sensor is used for detecting the telescopic motion of the operation end.

17. A surgical instrument platform as recited in claim 3, wherein the transmission member includes a first transmission member and a second transmission member; the first transmission component is used for converting the motion of the first connecting structure into the motion which can be detected by the sensing component; the second transmission part is connected with the driving part and used for driving the second connecting structure to move.

18. A surgical instrument platform as recited in claim 17, wherein the first transmission member includes a first set of transmission wires and a second set of transmission wires;

the first transmission wire group comprises a first transmission wire and a first wire wheel, and the first transmission wire is used for converting pitching motion of the first flexible structure around a first axis into rotating motion of the first wire wheel; the second transmission wire group comprises a second transmission wire and a second wire wheel, and the second transmission wire is used for converting the deflection motion of the first flexible structure around the second axis into the rotation motion of the second wire wheel;

the near end of the first transmission wire is connected with the first flexible structure, and the far end of the first transmission wire bypasses the first wire wheel and is connected with the first flexible structure; the near end of the second transmission wire is connected with the first flexible structure, and the far end of the second transmission wire bypasses the second wire wheel and is connected with the first flexible structure;

the sensing part is used for detecting the rotation of the first wire wheel and the second wire wheel and sending the obtained rotation detection information of the first wire wheel and the obtained rotation detection information of the second wire wheel to the control part; the control component is used for determining the rotating state of the first flexible structure rotating around the first axis according to the rotation detection information of the first wire wheel and determining the rotating state of the first flexible structure rotating around the second axis according to the rotation detection information of the second wire wheel.

19. A surgical instrument platform according to claim 17, wherein the first transmission member is further configured to translate motion of the wrist structure into motion detectable by the sensing member;

the first transmission component comprises a third transmission wire set and a fourth transmission wire set;

the third transmission wire group comprises a third transmission wire and a third wire wheel, and the third transmission wire is used for converting the pitching motion of the wrist structure around a fifth axis into the rotating motion of the third wire wheel; the near end of the third transmission wire is connected with the wrist structure, and the far end of the third transmission wire bypasses the third wire wheel and is connected with the wrist structure;

the fourth transmission wire group comprises a fourth transmission wire and a fourth wire wheel, and the fourth transmission wire is used for converting the deflection motion of the wrist structure around a sixth axis into the rotation motion of the fourth wire wheel; the near end of the fourth transmission wire is connected with the wrist structure, and the far end of the fourth transmission wire bypasses the fourth wire wheel and then is connected with the wrist structure;

the sensing part is used for detecting the rotation of the third wire wheel and the fourth wire wheel and sending the obtained rotation detection information of the third wire wheel and the rotation detection information of the fourth wire wheel to the control part; the control component is used for determining the rotation state of the wrist structure rotating around a fifth axis according to the rotation detection information of the third wire wheel and determining the rotation state of the wrist structure rotating around a sixth axis according to the rotation detection information of the fourth wire wheel.

20. A surgical instrument platform as recited in claim 17, wherein the drive component includes a first motor and a second motor; the second transmission component comprises a fifth transmission screw group and a sixth transmission screw group; the fifth transmission wire group is used for driving the second flexible structure to do pitching motion, and the sixth transmission wire group is used for driving the second flexible structure to do deflecting motion;

the fifth transmission wire group comprises at least two fifth transmission wires, the near ends of the two fifth transmission wires are respectively connected with the first motor, and the far ends of the two fifth transmission wires are respectively connected with the second flexible structure;

the sixth transmission wire group comprises at least two sixth transmission wires, the near ends of the two sixth transmission wires are respectively connected with the second motor, and the far ends of the two sixth transmission wires are respectively connected with the second flexible structure.

21. A surgical instrument platform as recited in claim 17, wherein the drive component includes a third motor and a fourth motor; the second transmission component comprises a seventh transmission wire set and an eighth transmission wire set; the seventh transmission wire set is used for driving the third flexible structure to do pitching motion, and the eighth transmission wire set is used for driving the third flexible structure to do deflecting motion;

the seventh transmission wire group comprises at least two seventh transmission wires, the near ends of the two seventh transmission wires are respectively connected with the third motor, and the far ends of the two seventh transmission wires are respectively connected with the third flexible structure after penetrating through the second flexible structure;

the eighth transmission wire group comprises at least two eighth transmission wires, the near ends of the two eighth transmission wires are respectively connected with the fourth motor, and the far ends of the two eighth transmission wires respectively penetrate through the second flexible structure and then are connected with the third flexible structure.

22. A surgical instrument platform as recited in claim 17, wherein the first transmission member includes a first rack and pinion transmission including a first rack and a first pinion in meshing engagement; the first gear is connected with the driving part, and the first rack is connected with the first connecting structure; the first gear rack transmission mechanism is used for converting the movement of the first connecting structure into the rotation of the first gear;

the sensing part is used for detecting the rotation of the first gear and sending the obtained rotation detection information of the first gear to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the first gear; the driving component is used for driving the second connecting structure to move through the second transmission component.

23. A surgical instrument platform as recited in claim 17, wherein the first transmission member is further configured to translate rotational motion of the manipulation structure into motion detectable by the sensing member;

the first transmission part comprises a first rotating shaft group, the first rotating shaft group comprises a first flexible shaft and a first rotating wheel, the near end of the first flexible shaft is connected with the control structure, and the far end of the first flexible shaft is connected with the first rotating wheel;

the sensing part is used for detecting the rotation of the first rotating wheel and sending the obtained rotation detection information of the first rotating wheel to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the first rotating wheel; the driving component is used for driving the end effector to rotate through the second transmission component.

24. A surgical instrument platform as recited in claim 17, wherein the second transmission member includes a second rack and pinion transmission including a second rack and a second pinion in meshing engagement; the second gear is connected with the driving part; the second rack is connected with the second connecting structure;

the sensing part is used for detecting the rotation of the second gear and sending the obtained rotation detection information of the second gear to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the second gear; the driving component is used for driving the second connecting structure to move through the second rack.

25. A surgical instrument platform as recited in claim 17, wherein the second transmission member includes a second shaft set including a second flexible shaft, a proximal end of the second flexible shaft being coupled to the drive member, a distal end of the second flexible shaft being coupled to the end effector;

the sensing component is used for detecting the autorotation motion of the control structure and sending the obtained rotation detection information of the control structure to the control component; the control part is used for controlling the driving part to output power according to the rotation detection information of the control structure; the driving component is used for transmitting the rotary motion to the end effector through the second flexible shaft and driving the end effector to rotate.

26. A surgical instrument platform as recited in claim 17, wherein the second transmission component includes a first transition piece, an opening and closing flexible transmission mechanism, and a second transition piece connected in sequence;

the first conversion piece is connected with the driving part and is used for converting the rotary motion of the driving part into the axial motion of the opening and closing flexible transmission mechanism; the second conversion piece is connected with a tool valve of the end effector and is used for converting the axial movement of the opening and closing flexible transmission structure into the opening and closing movement of the tool valve; and the opening and closing flexible transmission structure, the first conversion piece and the second conversion piece are configured to enable the opening and closing control structure to move in the same way as the tool valve of the end effector;

the sensing part is used for detecting the opening and closing movement of the opening and closing control structure and sending the obtained opening and closing movement detection information of the opening and closing control structure to the control part; the control part is used for controlling the driving part to output power according to the opening and closing motion detection information of the opening and closing control structure; the driving component is used for driving the end effector to perform opening and closing movement through the first conversion piece, the opening and closing flexible transmission mechanism and the second conversion piece.

27. The surgical instrument platform of claim 18, the second set of drive wires further comprising a resilient structure to compensate for an amount of bending of the second set of drive wires to maintain the surgical instrument in the open configuration.

28. A surgical instrument platform as recited in claim 1, wherein the instrument platform includes a housing having an interface formed thereon, the interface being coupled to a distal end of the robotic arm.

29. A surgical instrument platform as recited in claim 1, wherein the robotic arm includes at least six joints to achieve at least six degrees of freedom; the mechanical arm comprises at least one moving joint and at least five rotating joints; two of the rotary joints and one of the mobile joints are used for adjusting the position of the instrument assembly, and the other three rotary joints are used for adjusting the posture of the instrument assembly.

30. A surgical instrument platform as recited in claim 29, wherein the robotic arm includes seven joints; from the near end to the far end, the mechanical arm comprises a first moving joint, a first rotating joint, a second rotating joint, a third rotating joint, a second moving joint, a fourth rotating joint and a fifth rotating joint which are sequentially connected;

the axis of movement of the first prismatic joint is collinear with the axis of rotation of the first rotational joint; the axis of rotation of the first rotary joint is parallel to the axis of rotation of the second rotary joint; the axis of rotation of the third rotary joint is collinear with the axis of movement of the second prismatic joint; the axis of rotation of the fourth rotary joint is perpendicular to the axis of rotation of the fifth rotary joint.

31. A surgical instrument platform according to claim 30, wherein the axis of rotation of the third rotary joint, the axis of rotation of the fourth rotary joint, and the axis of rotation of the fifth rotary joint intersect at a point.

32. A surgical instrument platform as recited in claim 1, wherein the instrument platform includes a housing on which the surgical instrument is removably disposed, wherein: the distal end of the housing is externally formed with a cannula extending outwardly therefrom for connection to a wound site of a patient.

33. A surgical instrument platform according to claim 32, wherein a plurality of instrument channels are provided in the housing, the instrument channels extending from a proximal end of the housing to a distal end of the cannula; a proximal portion of the surgical instrument extends into the housing from outside the proximal end of the housing and is received in the instrument channel of the housing, and a distal portion of the surgical instrument extends from the distal end of the housing and is received in the instrument channel and through the cannula.

34. A surgical instrument platform according to claim 33, further comprising a tool axis, a plane of symmetry, and a working surface; the working surface is perpendicular to the symmetry plane, the working surface passes through the axes of at least two instrument channels, the instrument channels are symmetrical about the symmetry plane, and the intersection line of the symmetry plane and the working surface forms the tool axis;

the distal end portion of the surgical instrument in the initial state is linear and parallel to the tool axis, while the proximal end portion of the surgical instrument is bent;

the distal portion of the surgical instrument in the open state is C-shaped and within the working surface, while the proximal portion of the surgical instrument is bent at a greater angle than in the initial state.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a surgical instrument platform.

Background

With the application of the robot system for minimally invasive surgery in clinic, the requirements of patients on minimally invasive surgery are higher, and the requirements are highlighted in the number and positions of wounds. The single-hole operation reduces the number of incisions, can further reduce operation wounds, further reduces the dosage of operation anesthesia and analgesic drugs, relieves the postoperative pain of patients, reduces the risk of wound infection and complications, and simultaneously makes postoperative scars more attractive. However, since the operating instruments enter the abdominal cavity almost in parallel, it is difficult to form a triangular operating space, so that the traction and exposure are difficult, the difficulty of the operation is increased, and the common medical instruments can generate cross friction when operating simultaneously, which not only affects the normal use, but also may cause secondary injury to the patient.

Chinese patent application CN105266856A discloses a glove-type single port laparoscopic puncture device, which adopts a flexible glove-type structure, and although the operating space of the operating end of the doctor is increased, the problem of interference between surgical instruments in the abdominal cavity is not solved. Chinese patent application CN104352264A discloses a multi-degree-of-freedom laparoscopic surgical instrument, which is provided with a handle, and a knob is provided at the handle, and the proximal end of a push rod passes through the center of the knob, so as to control the bending of a bending unit through the rotation motion of the knob, thereby achieving the purpose that the front end can be bent in any direction, however, this method requires an operator to operate the push rod alone, and the motion direction of the push rod is opposite to the end effector, which is not beneficial to the operator to adjust the instrument at any time, and the operation difficulty is increased by the reverse operation. Not only this, the comfort and convenience of the surgical operation are also desired to be further improved.

Disclosure of Invention

In view of one or more of the above technical problems, the present invention provides a surgical instrument platform, which can make the operation more labor-saving and convenient, and at the same time, can improve the precision of motion control, and can realize that more than two surgical instruments/endoscopes can be inserted into the human body simultaneously for operation without interference, thereby reducing the operation difficulty.

To achieve the above object, the present invention provides a surgical instrument platform comprising:

a base;

an adjustment assembly disposed on the base and including a mechanical arm; and

Optionally, the first connection structure comprises a first flexible structure, the second connection structure comprises a second flexible structure, and the first flexible structure and the second flexible structure respectively have at least one rotational degree of freedom;

Optionally, the connection assembly further includes a third flexible structure, the third flexible structure is located between the second connection structure and the end effector, and the third flexible structure has at least one rotational degree of freedom to rotate the end effector; the operation end comprises a control structure, a wrist structure and a holding structure which are connected in sequence; the control structure is arranged on the wrist structure and used for driving the wrist structure to move; the proximal end of the first connecting structure is connected with the holding structure, and the wrist structure has at least one rotational degree of freedom;

Optionally, the first connection structure comprises a first outer tube and a first inner tube, and the second connection structure comprises a second outer tube and a second inner tube; the first outer pipe is sleeved on the first inner pipe, and the second outer pipe is sleeved on the second inner pipe;

the first flexible structure is disposed on the first outer tube, and the second flexible structure is disposed on the second outer tube.

Optionally, the distal end of the second inner tube is connected to the end effector by a third flexible structure, the third flexible structure having at least one rotational degree of freedom; and/or the distal end of the first inner tube extends into the interior of the instrument platform and the proximal end of the second inner tube extends into the interior of the instrument platform.

Optionally, the first flexible structure has two rotational degrees of freedom, respectively a rotational degree of freedom to rotate about a first axis and a rotational degree of freedom to rotate about a second axis;

the third axis is parallel to the first axis, the fourth axis is parallel to the second axis, and the first axis is perpendicular to the second axis;

Optionally, the first inner tube is movable relative to the first outer tube and the second inner tube is movable relative to the second outer tube;

Optionally, the first inner tube includes a first proximal section, a first middle section and a first distal section connected in sequence from the proximal end to the distal end, and the first proximal section is connected to the operation end; the first proximal section and the first distal section are both rigid members, and the first midsection is a flexible member; the first outer tube comprises a first proximal end part, a first flexible structure and a first distal end part which are connected in sequence from near to far, and the first distal end part is connected with the instrument platform;

Optionally, the proximal end of the first proximal section comprises a first sub-inner tube having an outer diameter no greater than the inner diameter of the first proximal section and a second sub-inner tube having an outer diameter greater than the inner diameter of the first proximal section; the sum of the axial lengths of the first sub-inner tube and the first middle section is greater than the sum of the axial lengths of the first proximal end portion and the first flexible structure.

Optionally, the second inner tube comprises a second proximal section, a second middle section and a second distal section which are connected in sequence from the proximal end to the distal end; the second proximal section and the second distal section are both rigid members, and the second midsection is a flexible member; the second distal section is coupled to the end effector and the second proximal section extends into the interior of the instrument platform and is coupled to the drive member;

Optionally, the distal end of the second distal section is comprised of a third sub-inner tube having an outer diameter no greater than the inner diameter of the second distal portion and a fourth sub-inner tube having an outer diameter greater than the inner diameter of the second distal portion; the sum of the axial lengths of the third sub-inner tube and the second mid-section is greater than the sum of the axial lengths of the second distal end portion and the second flexible structure.

Optionally, the wrist structure has two rotational degrees of freedom, respectively a rotational degree of freedom about a fifth axis and a rotational degree of freedom about a sixth axis;

the fifth axis is parallel to the seventh axis, the sixth axis is parallel to the eighth axis, and the fifth axis is perpendicular to the sixth axis;

Optionally, the steering structure has a rotational degree of freedom to rotate about a ninth axis, and the end effector has a rotational degree of freedom to rotate about a tenth axis; the control structure is rotatably arranged on the wrist structure; the end effector is rotatably connected with the third flexible structure;

Optionally, the end effector comprises at least one tool flap; the operating end also comprises an opening and closing control structure which is arranged on the control structure and can perform opening and closing movement;

when the opening and closing control structure makes opening and closing movement, the sensing part is used for detecting the opening and closing movement of the opening and closing control structure and sending opening and closing detection information to the control part; the control part is used for controlling the driving part to output power according to the opening and closing detection information; the driving component is used for driving the tool valve to open and close through the transmission component; the opening and closing movement mode of the opening and closing control structure is the same as the opening and closing movement mode of the end effector.

Optionally, the sensing component comprises a plurality of sensors for detecting movement of the manipulation end and movement of the first flexible structure.

Optionally, the sensing component comprises a first sensor, a second sensor, a third sensor, a fourth sensor, a fifth sensor, a sixth sensor, and a seventh sensor;

Optionally, the transmission member comprises a first transmission member and a second transmission member; the first transmission component is used for converting the motion of the first connecting structure into the motion which can be detected by the sensing component; the second transmission part is connected with the driving part and used for driving the second connecting structure to move.

Optionally, the first transmission member comprises a first transmission wire set and a second transmission wire set;

Optionally, the first transmission component is further configured to convert movement of the wrist structure into movement detectable by the sensing component;

the first transmission component comprises a third transmission wire set and a fourth transmission wire set;

Optionally, the drive component comprises a first motor and a second motor; the second transmission component comprises a fifth transmission screw group and a sixth transmission screw group; the fifth transmission wire group is used for driving the second flexible structure to do pitching motion, and the sixth transmission wire group is used for driving the second flexible structure to do deflecting motion;

Optionally, the drive component comprises a third motor and a fourth motor; the second transmission component comprises a seventh transmission wire set and an eighth transmission wire set; the seventh transmission wire set is used for driving the third flexible structure to do pitching motion, and the eighth transmission wire set is used for driving the third flexible structure to do deflecting motion;

Optionally, the first transmission component comprises a first rack and pinion transmission mechanism, and the first rack and pinion transmission mechanism comprises a first rack and a first gear which are in meshed connection; the first gear is connected with the driving part, and the first rack is connected with the first connecting structure; the first gear rack transmission mechanism is used for converting the movement of the first connecting structure into the rotation of the first gear;

Optionally, the first transmission component is further configured to convert a rotation motion of the manipulation structure into a motion that can be detected by the sensing component;

Optionally, the second transmission component comprises a second rack and pinion transmission mechanism, the second rack and pinion transmission mechanism comprises a second rack and a second pinion which are meshed and connected; the second gear is connected with the driving part; the second rack is connected with the second connecting structure;

Optionally, the second transmission component includes a second rotation shaft set, the second rotation shaft set includes a second flexible shaft, a proximal end of the second flexible shaft is connected to the driving component, and a distal end of the second flexible shaft is connected to the end effector;

Optionally, the second transmission component includes a first conversion part, an opening and closing flexible transmission mechanism and a second conversion part, which are connected in sequence;

Optionally, the second driving wire set further comprises an elastic structure for compensating the bending amount of the second driving wire set, so as to maintain the configuration of the surgical instrument in the open state.

Optionally, the instrument platform includes a housing having an interface formed thereon, the interface being coupled to the distal end of the robotic arm.

Optionally, the robotic arm comprises at least six joints to achieve at least six degrees of freedom; the mechanical arm comprises at least one moving joint and at least five rotating joints; two of the rotary joints and one of the mobile joints are used for adjusting the position of the instrument assembly, and the other three rotary joints are used for adjusting the posture of the instrument assembly.

Optionally, the robotic arm comprises seven joints; from the near end to the far end, the mechanical arm comprises a first moving joint, a first rotating joint, a second rotating joint, a third rotating joint, a second moving joint, a fourth rotating joint and a fifth rotating joint which are sequentially connected;

Optionally, the axis of rotation of the third rotary joint, the axis of rotation of the fourth rotary joint and the axis of rotation of the fifth rotary joint intersect at a point.

Optionally, the instrument platform comprises a housing on which the surgical instrument is removably disposed, wherein: the distal end of the housing is externally formed with a cannula extending outwardly therefrom for connection to a wound site of a patient.

Optionally, a plurality of instrument channels are provided in the housing, the instrument channels extending from the proximal end of the housing to the distal end of the cannula; a proximal portion of the surgical instrument extends into the housing from outside the proximal end of the housing and is received in the instrument channel of the housing, and a distal portion of the surgical instrument extends from the distal end of the housing and is received in the instrument channel and through the cannula.

Optionally, the instrument platform further comprises a tool axis, a symmetry plane, and a working plane; the working surface is perpendicular to the symmetry plane, the working surface passes through the axes of at least two instrument channels, the instrument channels are symmetrical about the symmetry plane, and the intersection line of the symmetry plane and the working surface forms the tool axis;

the distal end portion of the surgical instrument in the initial state is linear and parallel to the tool axis, while the proximal end portion of the surgical instrument is bent;

The surgical instrument platform provided by the invention has at least one of the following advantages:

firstly, the instrument assembly is suspended by adjusting the mechanical arm in the assembly, so that the operation is more accurate and reliable, the accuracy of the operation is improved, the operation is simpler and more convenient, and the operation efficiency and the comfort of the operation are improved. In addition, in the operation process, the driving part controls the movement of the connecting component, so that the movement of the end effector is driven, the movement control precision of the end effector is higher, the accuracy of the operation is further improved, and the operation is more convenient and comfortable.

Secondly, the surgical instrument realizes that more than two surgical instruments can be simultaneously inserted into a human body for operation without interference during operation through the linkage (namely mirror image motion) of the first flexible structure and the second flexible structure, so that secondary injury to a patient is reduced, and the surgical instruments can also be simultaneously close to the same target tissue for operation, so that the operation space of the surgical instruments is enlarged, and the operation difficulty is reduced.

Thirdly, the surgical instrument of the invention realizes the homoconfigurational operation of the operation end and the end effector by the third flexible structure, so that the surgical operation is more visual and convenient, and more than two surgical instruments can be conveniently close to the same target tissue in vivo, thereby further reducing the surgical difficulty.

Drawings

The features, nature, and advantages of embodiments of the invention will be described with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a surgical instrument platform according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the degrees of freedom of a surgical instrument platform according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an instrument assembly in accordance with an embodiment of the present invention, wherein both surgical instruments in the instrument assembly are in an initial state;

FIG. 4 is a schematic view of a hook joint configuration for coupling the second movable arm to the instrument assembly, in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of an instrument assembly in accordance with an embodiment of the present invention, wherein both surgical instruments in the instrument assembly are in an open position;

FIG. 6 is a schematic structural view of a surgical instrument in accordance with an embodiment of the present invention, with the instrument platform omitted;

FIG. 7a is a schematic view of an outer tube and an inner tube of a coupling assembly according to an embodiment of the present invention when not assembled;

FIG. 7b is a schematic view of the surgical instrument of the present invention showing the freedom of movement of the distal end;

FIG. 8a is a schematic structural view of an end effector having two open-close petals according to an embodiment of the present invention;

fig. 8b is a schematic structural diagram of an opening/closing control structure provided on the manipulation structure according to the embodiment of the present invention;

FIG. 9 is a motion control block diagram of a surgical instrument according to an embodiment of the present invention;

FIG. 10 is a schematic view of a flexible structure in the form of a serpentine joint in accordance with an embodiment of the present invention;

FIG. 11a is a schematic view of an embodiment of the present invention showing the end effector rotating in the same direction as the manipulating end;

fig. 11b is a schematic diagram illustrating a state change of the operation end in the swing mode according to the embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The serpentine surgical instrument of the present invention is described in further detail below with reference to the figures and the embodiments. In this application, for ease of understanding, terms such as "proximal" and "distal" are used, which terms refer to the relative orientation, position, orientation of elements or actions with respect to one another as viewed from the perspective of a clinician using the medical device. "proximal" and "distal" are not limiting, but "proximal" generally refers to the end of the member that is closer to the operator during normal operation, and "distal" generally refers to the end that is further from the operator.

As used in this specification, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. As used in this specification, the terms "plurality," "plurality," and "a number" are generally employed in a sense including "two or more," unless the content clearly dictates otherwise.

The core idea of the invention is to provide a surgical instrument platform comprising:

a base;

an adjustment assembly disposed on the base and including a mechanical arm; and

the instrument assembly comprises a surgical instrument and an instrument platform, wherein the surgical instrument is detachably arranged on the instrument platform, and the instrument platform is connected with the tail end of the mechanical arm so as to adjust the position and the posture (namely the pose) of the instrument assembly through the mechanical arm;

wherein: the surgical instrument comprises an operation end, a connecting assembly and an end effector which are sequentially connected from near to far; the connecting assembly comprises a first connecting structure at the proximal end and a second connecting structure at the distal end, the proximal end of the first connecting structure is connected with the operating end, and the distal end of the first connecting structure is connected with the instrument platform; the distal end of the second connecting structure is connected with the end effector, and the proximal end of the second connecting structure is connected with the instrument platform;

the surgical instrument further comprises a sensing component, a driving component, a transmission component and a control component; the sensing part is used for detecting the motion of the first connecting structure and sending the motion detection information of the first connecting structure to the control part; the control part is used for controlling the driving part to output power according to the motion detection information of the first connecting structure; the driving component is used for driving the second connecting structure to move through the transmission component.

Through the application of above-mentioned surgical instruments platform, in the operation process, the arm in the accessible adjustment subassembly suspends the apparatus subassembly in midair to make the operation more accurate and reliable, improve the accuracy of operation, still can make the operation simpler and convenient simultaneously, improve the travelling comfort of operation efficiency and operation. In addition, in the operation process, the driving part controls the movement of the connecting assembly, so that the movement of the end effector is driven, the movement precision of the end effector is high, and the accuracy of the operation is further improved.

Further, the first connection structure of the present invention comprises a first flexible structure and the second connection structure comprises a second flexible structure. The first flexible structure and the second flexible structure each have at least one rotational degree of freedom. The sensing part is used for detecting the rotation of the first flexible structure and sending the obtained rotation detection information to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the first flexible structure; the driving component drives the second flexible structure to rotate in the opposite direction along with the rotation of the first flexible structure through the transmission component. Such a configuration not only facilitates insertion of the surgical instrument into the human body in an initial state and controllable opening in the human body, but also facilitates removal after completion of the surgery, thereby reducing the difficulty of installing the surgical instrument, and also increases the operable space of the doctor operating end and the end effector, facilitates solving a single target region in a target tissue with two or more tools at the same time, and does not interfere with each other, thereby reducing the surgery difficulty.

Furthermore, the connecting assembly of the present invention further includes a third flexible structure, the third flexible structure is located between the second connecting structure and the end effector, and the third flexible structure has at least one rotational degree of freedom to drive the end effector to rotate. The operation end comprises a control structure, a wrist structure and a holding structure which are sequentially connected, the near end of the first connecting structure is connected with the holding structure, and the wrist structure has at least one rotational degree of freedom. The sensing part is used for detecting the rotation of the wrist structure and sending the obtained rotation detection information of the wrist structure to the control part; the control part is used for controlling the driving part to output power according to the rotation detection information of the wrist structure; the driving component is used for driving the third flexible structure to rotate in the same direction along with the rotation of the wrist structure through the transmission component, so that the end effector and the operation end rotate in the same direction. By doing so, can realize that two or more surgical instruments are close to same target tissue simultaneously to still can realize the syntropy operation of operation end and end effector, thereby further reduce the operation degree of difficulty, reduce the operation risk.

The surgical instrument platform according to the present invention will be described in more detail below with reference to the accompanying drawings and preferred embodiments.

Fig. 1 is a schematic structural diagram of a surgical instrument platform according to an embodiment of the present invention. As shown in fig. 1, the present embodiment provides a surgical instrument platform 100 including a base 10, a trim assembly 20, an adjustment assembly 30, and an instrument assembly 40. The trim assembly 20 and trim assembly 30 are both disposed on the base 10, and the instrument assembly 40 is pivotally (e.g., hingedly) connected to the distal end of the trim assembly 30.

Wherein the trim assembly 20 is used to trim the instrument assembly 40 and the adjustment assembly 30 to keep the surgical instrument platform 100 in a gravitational equilibrium during operation. Trim assembly 20 may be integrated into trim assembly 30. In addition, the trim component 20 may be a gravity balance, may be implemented by a motor, or may be implemented by a constant force spring. If a motor or a constant force spring is used, the balancing assembly 20 can adjust the magnitude of the output force at any time to balance the varying gravity to adapt to instrument assemblies 40 with different weights, so that the balancing flexibility is higher, and the application capability of the surgical platform can be enhanced. Since the gravity balancing technique is well known to those skilled in the art, the detailed implementation thereof will not be described in detail.

The adjustment assembly 30 is used to adjust the pose (i.e., position and attitude) of the instrument assembly 40. Further, the adjusting assembly 30 comprises a mechanical arm with at least six degrees of freedom, and the tail end of the mechanical arm is connected with the instrument assembly 40, so that the instrument assembly 40 is suspended through the mechanical arm and the position and the posture of the instrument assembly 40 are adjusted, the operation is more accurate and reliable, the accuracy of the operation is improved, the operation is more labor-saving and convenient, the operation efficiency is improved, the working strength of doctors is reduced, and the comfort of the operation is improved.

In an embodiment of the present invention, the robot arm includes at least six joints to realize at least six degrees of freedom. For example, the robotic arm includes at least one prismatic joint and at least five rotational joints, two of which cooperate with one prismatic joint to adjust the position of instrument assembly 40, and three of which articulate instrument assembly 40 to adjust the pose of instrument assembly 40. Preferably, the robot arm further comprises at least one other moving joint (for example, the second moving joint 39 shown in fig. 2) to construct a redundant joint by which the adjustment accuracy is improved.

Fig. 2 is a schematic diagram of a degree of freedom of a robot arm according to an embodiment of the present invention. As shown in fig. 2, the robot arm includes seven joints, and seven degrees of freedom are achieved. Specifically, from the proximal end to the distal end, the robot arm includes a first moving joint 32, a first rotating joint 34, a second rotating joint 36, a third rotating joint 38, a second moving joint 39, a fourth rotating joint 310, and a fifth rotating joint 310' connected in this order. The rotation axis of the first rotary joint 34 and the rotation axis of the second rotary joint 36 are parallel to each other; the axis of movement of the first prismatic joint 32 is collinear with the axis of rotation of the first revolute joint 34, and the axis of rotation of the third revolute joint 38 is collinear with the axis of movement of the second prismatic joint 39; the rotation axis of the fourth rotary joint 310 and the rotation axis of the fifth rotary joint 310' are perpendicular to each other. Preferably, the three axes of the rotation axes of the third rotary joint 38, the fourth rotary joint 310 and the fifth rotary joint 310' intersect at a point.

Furthermore, any two adjacent joints are connected through an arm. For example, the robot arm further includes a fixed arm 31, a first moving arm 32 ', a first rotating arm 33, a second rotating arm 35, a third rotating arm 37, a second moving arm 39', a fourth rotating arm, and a fifth rotating arm.

One end of the fixing arm 31 is fixedly connected to the base 10, and the other end is connected to the first movable joint 32. One end of the first moving arm 32 'is connected to the first moving joint 32, that is, the first moving arm 32' is movable in the direction of the moving axis of the first moving joint 32 with respect to the fixed arm 31 by the first moving joint 32. The other end of the first moving arm 32' is connected to a first rotary joint 34.

One end of the first rotating arm 33 is connected to the first rotating joint 34, so that the first rotating arm 33 can rotate around the rotating axis of the first rotating joint 34 relative to the first moving arm 32'. The other end of the first rotary arm 33 is connected to a second rotary joint 36.

One end of the second turning arm 35 is connected to a second rotary joint 36, so that the second turning arm 35 can make a rotary motion relative to the first turning arm 33 around the rotation axis of the second rotary joint 36. The other end of the second rotating arm 35 is connected to a third rotating joint 38.

One end of the third turning arm 37 is connected to a third rotary joint 38 so that the third turning arm 37 can make a rotary motion relative to the second turning arm 35 about the rotation axis of the third rotary joint 38. The other end of the third rotating arm 37 is connected to a second moving joint 39.

One end of the second moving arm 39 'is connected to the second moving joint 39, so that the second moving arm 39' is moved relative to the third rotating arm 37 by the second moving joint 39. The fourth rotary joint 310 connects the other end of the second moving arm 39' and a fourth rotating arm (for example, the fourth rotating arm is an outer frame 313). The fifth rotary joint 310' connects the fourth rotating arm and the fifth rotating arm, respectively (for example, the fifth rotating arm is an inner frame 314). Further, the fifth rotating arm is connected to the instrument assembly 40. In this way, the second moving arm 39 'is rotationally connected to the fourth rotating arm via the fourth rotary joint 310, and the fourth rotating arm is rotationally connected to the fifth rotating arm via the fifth rotary joint 310'. In this manner, the instrument assembly 40 can perform rotational, pitch, and yaw motions in a base coordinate system to adjust the attitude relative to the stationary arm 31.

Fig. 3 illustrates the structure of an instrument assembly 40 according to one embodiment of the present invention. As shown in fig. 3, the instrument assembly 40 includes an endoscope 2 in addition to the surgical instrument 1 and the instrument platform 3. The surgical instrument 1 and the endoscope 2 are both detachably arranged on an instrument platform 3. In this embodiment, the instrument platform 3 has an interface 312, and the instrument platform 3 is detachably connected to the fifth rotating arm through the interface 312, so as to connect the instrument assembly 40 and the adjustment assembly 30. Specifically, the fourth rotary joint 310 is respectively connected to the second moving arm 39 ' and the fourth rotating arm, and the fifth rotary joint 310 ' is respectively connected to the fourth rotating arm and the fifth rotating arm, so that the instrument platform 3 can rotate relative to the second moving arm 39 ', and the whole instrument assembly 40 is driven to rotate, such as to pitch and swing left and right. Preferably, the fourth rotary joint 310, the fifth rotary joint 310', the fourth rotary arm and the fifth rotary arm are components of a hooke joint structure.

Fig. 4 is a structure of a hooke joint according to an embodiment of the present invention. As shown in fig. 4, the hooke's hinge structure includes an outer frame 313 and an inner frame 314 received in the outer frame 313, the outer frame 313 and the inner frame 314 are connected by a fifth rotary joint 310 ', and the outer frame 313 and the second moving arm 39 ' are rotatably connected by a fourth rotary joint 310. At this time, the fifth rotating arm is an inner frame 314 of a hooke joint structure, and the fourth rotating arm is an outer frame 313 of the hooke joint structure.

With continued reference to fig. 3, the instrument platform 3 further includes a housing 315, the interface 312 is formed on the housing 315, and the interface 312 is preferably a cavity. The inner frame 314 rotates the outer shell 315 together through the interface 312, the outer frame 313 is rotatably connected to the inner frame 314, and the axis X1 of the inner frame 314 rotating relative to the outer frame 313 is perpendicular to the axis X2 of the outer frame 313 rotating relative to the second moving arm 39 ', so as to realize swinging in two directions, and finally realize pitching swinging (such as about the axis X1) and deflecting swinging (such as about the axis X2) of the instrument platform 3 relative to the second moving arm 39', and in combination with the rotation of the third rotary joint 38, so as to adjust the posture of the instrument assembly 40 under the base coordinate system.

The distal end of the housing 315 is also formed with a cannula 311 on the outside, the cannula 311 extending outwardly from the distal end of the housing 315 for connection to a wound site of a patient. And the housing 315 may be integrally formed with the sleeve 311 or separately formed. In this embodiment, the housing 315 defines a plurality of instrument channels extending from the proximal end of the housing 315 to the distal end of the cannula 311. The number of the instrument channels is configured according to actual operation requirements, and usually, one surgical instrument 1 or one endoscope 2 is arranged in one instrument channel. The surgical instrument 1 or endoscope 2 is intended to be detachably secured to the instrument channel. For example, in assembling the instrument assembly 40, both the surgical instrument 1 and the endoscope 2 are detachably disposed on the housing 315. Wherein the proximal portion of the surgical device 1 extends from the proximal exterior of the housing 315 into the housing 315 and is received in the housing 315, and the distal portion of the surgical device 1 is received in the housing 315 from the distal end of the housing 315 and extends through the cannula 311 to extend into the body for performing a surgical procedure.

Further, the instrument platform 3 further comprises a tool axis, a symmetry plane and a working plane, the working plane is perpendicular to the symmetry plane of the instrument platform 3, the working plane passes through the axes of at least two instrument channels, the instrument channels are symmetrical about the symmetry plane, and the intersection line of the symmetry plane and the working plane forms the tool axis. In actual operation, the stab card is placed on the wound site on the surface of the human body, the cannula 311 is inserted into the abdomen of the patient through the stab card, and the distal ends of the surgical instrument 1 and the endoscope 2 are inserted into the human body through the stab card respectively. However, in actual operation, one surgical instrument 1 may be used, or two or more surgical instruments may be used, and the surgical instruments may be arranged by a surgeon according to actual operation needs. The surgical instruments 1 shown in fig. 3 and 5 are two in each case, and the two surgical instruments 1 may have the same construction, but it should be understood that the surgical instruments 1 may also differ in some respects, in particular may have different end effectors 6 and functions. The present invention is not particularly limited in the selection of the type of surgical end-effector, and may be selected by the surgeon according to the surgical needs, such as scissors, graspers, clamps, forceps, and other forceps, and may also be an electro-dynamic end-effector such as a resistive heater, a motor drive element, and the like. Of course, the end effector 6 may be selected from other forms, such as a hook, etc., according to the needs of the surgeon.

In the following description, the surgical instrument platform 100 illustrated by two surgical instruments 1 facilitates the simultaneous approach of a plurality of surgical instruments 1 to the same target tissue for performing a surgical operation without interference between the plurality of surgical instruments 1, but the invention should not be limited thereto.

Fig. 6 is a schematic structural diagram of a surgical instrument according to an embodiment of the present invention. As shown in fig. 6, in the present embodiment, the surgical instrument 1 includes a manipulation end 4, a connection assembly 5, and an end effector 6. Wherein the connection assembly 5 comprises a proximal first connection structure 51 and a distal second connection structure 52. The proximal end of the first connecting structure 51 is connected with the operating end 4, and the distal end is connected with the instrument platform 3. The second connecting structure 52 is connected to the instrument platform 3 at a proximal end and to the end effector 6 at a distal end. Thereby, the proximal portion of the surgical instrument 1 comprises the handling end 4 and the first connecting structure 51; the distal end portion of the surgical instrument 1 includes a second connecting structure 52 and an end effector 6.

Further, the first connection structure 51 comprises a first flexible structure 513, wherein the first flexible structure 513 has at least one rotational degree of freedom, which allows a relative deflection between the first connection structure 51 and the tool axis. The second connecting structure 52 further comprises a second flexible structure 523, wherein the second flexible structure 523 has at least one degree of rotational freedom, and can enable relative deflection between the second connecting structure 52 and the tool axis.

Further, the connection assembly 5 further comprises a third flexible structure 53, wherein the third flexible structure 53 is located between the second connection structure 52 and the end effector 6. The third flexible structure 53 has at least one rotational degree of freedom, which enables a relative deflection between the end effector 6 and the tool axis, i.e. a rotation of the end effector 6. Thus, the distal end portion of the surgical device 1 further comprises a third flexible structure 53.

Once the stab is secured in place at the wound site of the patient, the instrument assembly 40 in its initial state is advanced into the body through the stab. In the initial state, as shown in fig. 3, the two surgical instruments 1 are in a Y-shape, i.e., the operation ends 4 of the two surgical instruments 1 are far away from each other (i.e., the surgical instrument structure at the external part of the patient) through the first flexible structure 513, and the parts inserted into the human body through the cannula 311 are close to and close together (i.e., the surgical instrument structure at the internal part of the patient) and are in the working plane.

In particular, the first flexible structure 513 in the initial state of the surgical device 1 is configured to deflect at an angle with respect to the tool axis, while the second flexible structure 523 in the initial state is configured to not deflect with respect to the tool axis, i.e. the axis of the second connection structure 52 is parallel to said tool axis. Thereby, the distal end portion of the surgical instrument 1 is linear and parallel to the tool axis, while the proximal end portion of the surgical instrument 1 is bent. Preferably, the third flexible structure 53, and even the end effector 6 (if there is a degree of freedom of deflection), in the initial state, is not deflected relative to the tool axis. As such, the manipulation end 4 to the first flexible structure 513 on the surgical instrument 1 are all offset from the tool axis, and the second flexible structure 523 to the end effector 6 are all substantially in a line parallel to the tool axis, i.e., the axes of the second flexible structure 523, the third flexible structure 53, and the end effector 6 are collinear. When the stab card is inserted, the first flexible structure 513 and the second flexible structure 523 of the surgical instrument 1 are arranged outside and inside the body, respectively. Under this state (initial state), not only be convenient for two surgical instruments 1 insert simultaneously internal, also be convenient for remove instrument component 40 after accomplishing the operation, reduced the degree of difficulty of dismouting instrument component 40 like this, also make things convenient for simultaneously near same target tissue after two follow-up surgical instruments 1 are opened in a controlled way moreover, avoided the interference between two surgical instruments.

After the surgical instrument 1 is inserted into the body, referring to fig. 5, the two surgical instruments 1 are further opened, so that the surgical instrument 1 is in the opened state. At this time, the proximal end portion of the surgical instrument 1 is bent at a larger angle than the initial state, and the distal end portion of the surgical instrument 1 is C-shaped and is in the working plane. In particular, the manipulation ends 4 of the two surgical instruments 1 are further away from each other, while the surgical instrument structures of the portions of the two surgical instruments 1 inside the patient's body, including the second flexible structure 523, the third flexible structure 53 and the end effector 6, for example, are C-shaped and in the working plane. The C-shape is not to be understood in a narrow sense as a circular arc, but rather in a broad sense as a structure of a surgical instrument with different directions of curvature. For example, the surgical instrument structure at the internal portion of the patient is first bent away from the tool axis by the second flexible structure 523 and then bent towards the tool axis by the third flexible structure 53. This facilitates the simultaneous access of two or more end-effectors 6 to the same target tissue, and the simultaneous operation of the surgical instruments 1 does not involve cross-friction, thereby ensuring normal use and avoiding secondary injury to the patient. Moreover, by suspending instrument assembly 40 by adjustment assembly 30 during a surgical procedure, the need for a surgeon to hold the entire instrument assembly 40 is eliminated, which results in a time and effort saving surgical procedure.

With continued reference to fig. 6, and with reference to fig. 9, the surgical device 1 further includes a transmission member 80, a drive member 60, a sensing member 70, and a control member 50. Preferably, the drive component 60 and the control component 50 are both disposed inside the instrument platform 3. Wherein the control unit 50 is communicatively connected to the driving unit 60 and the sensing unit 70, respectively. The sensing component 70 is configured to detect movement of the first connection structure 51 and send obtained movement detection information of the first connection structure 51 to the control component 50, the control component 50 is configured to control the driving component 60 to output power according to the movement detection information of the first connection structure 51, and then the driving component 60 drives the second connection structure 52 to move through the transmission component 80, so as to improve movement accuracy of the connection assembly 5.

Further, the sensing part 70 is configured to detect the rotation of the first flexible structure 513 and send the obtained rotation detection information to the control part 50; the control unit 50 is configured to control the driving unit 60 to output power according to the rotation detection information of the first flexible structure 513, so that the driving unit 60 drives the second flexible structure 523 to rotate in the opposite direction following the rotation of the first flexible structure 513 through the transmission unit 80. In this way, the linkage (mirrored movement about the stamp card) of the first flexible structure 513 and the second flexible structure 523 is achieved. In one embodiment, the rotation angle of the second flexible structure 523 is configured to be equal to the rotation angle of the first flexible structure 513. In another embodiment, the rotation angle of the second flexible structure 523 is configured in proportion to the rotation angle of the first flexible structure 513.

In this embodiment, as shown in fig. 6, the first flexible structure 513 and the second flexible structure 523 respectively have two rotational degrees of freedom. As the first flexible structure 513 has rotational freedom to rotate about the first axis R1 (i.e., pitch motion) and rotational freedom to rotate about the second axis R2 (i.e., yaw motion), the second flexible structure 523 has rotational freedom to rotate about the third axis R3 (i.e., pitch motion) and rotational freedom to rotate about the fourth axis R4 (i.e., yaw motion). Preferably, the third axis is parallel to the first axis and the fourth axis is parallel to the second axis. More preferably, the first axis is perpendicular to the second axis. When the first flexible structure 513 is driven to rotate around the first axis R1, the sensing component 70 detects the rotation of the first flexible structure 513 around the first axis R1 and sends the obtained first rotation detection information to the control component 50, and the control component 50 controls the driving component 60 to output power according to the received first rotation detection information, so that the driving component 60 drives the second flexible structure 523 around the third axis R3 through the transmission component 80 to rotate in the direction opposite to the rotation direction of the first flexible structure 513. Similarly, when the first flexible structure 513 is driven to rotate around the second axis R2, the sensing component 70 detects the rotation of the first flexible structure 513 around the second axis R2 and sends the obtained second rotation detection information to the control component 50, and the control component 50 controls the driving component 60 to output power according to the received second rotation detection information, so that the driving component 60 drives the second flexible structure 523 to rotate around the fourth axis R4 through the transmission component 80 in the direction opposite to the rotation direction of the first flexible structure 513.

Further, as shown in fig. 6, 7a and 7b, the first connecting structure 51 specifically includes a first outer tube 512 and a first inner tube 511, and the second connecting structure 52 includes a second outer tube 522 and a second inner tube 521. The first outer tube 512 is sleeved on the first inner tube 511. The second outer pipe 522 is sleeved on the second inner pipe 521. That is, the first connecting structure 51 and the second connecting structure 52 are independent structures, and are respectively formed by sleeving an inner pipe and an outer pipe. More specifically, the proximal end of the first inner tube 511 is connected to the operation end 4, and the distal end is a free end and is used for being inserted into the first outer tube 512; the proximal end of the first outer tube 512 is free and is disposed outside of the instrument platform 3, and the distal end is connected to the instrument platform 3, for example, detachably or non-detachably connected to an instrument channel of the housing 315 on the instrument platform 3. The distal end of the second inner tube 521 is connected to the end effector 6, preferably by a third flexible structure 53, to the end effector 6. The proximal end of the second inner tube 521 is a free end and is adapted to be inserted into the second outer tube 522; the proximal end of the second outer tube 522 is coupled to the instrument platform 3, such as to the instrument channel or cannula 311 of the housing 315 on the instrument platform 3, either removably or non-removably, and the distal end of the second outer tube 522 is free and disposed outside of the instrument platform 3. Furthermore, the first flexible structure 513 is disposed on the first outer tube 512, and the second flexible structure 523 is disposed on the second outer tube 522. Optionally, the distal end of the first inner tube 511 of the first connection structure 51 may extend further into the interior of the instrument platform 3, e.g. into an instrument channel within the instrument platform 3. Similarly, the proximal end of the second inner tube 521 of the second connecting structure 52 may also extend into the interior of the instrument platform 3, such as into an instrument channel.

Further preferably, based on the above-mentioned connection assembly 5, the first inner tube 511 is translatable relative to the first outer tube 512 (including distally advancing and proximally retracting), while a telescopic freedom of extension and retraction of the first inner tube 51 along the axis R11 of the first outer tube 512 is achieved, thereby enabling the advancing and retracting of the operation end 4 relative to the instrument platform 3. While the second inner tube 521 is translatable relative to the second outer tube 522 (including distal advancement and proximal retraction), a degree of telescopic freedom is achieved in which the second inner tube 521 telescopes along the axis R12 of the second outer tube 522, thereby enabling advancement and retraction of the end effector 6 relative to the instrument platform 3. At this time, the movement of the first connection structure 51 further includes the movement of the first inner tube 511, and correspondingly, the movement of the second connection structure 52 further includes the movement of the second inner tube 521. In practical applications, when the operation end 4 is advanced or retracted, the first inner tube 511 is synchronously driven to perform telescopic movement relative to the first outer tube 512. At this time, the sensing component 70 detects the movement of the first inner tube 511 and/or the operation end 4 to obtain movement detection information, and the control component 50 controls the driving component 60 to output power according to the movement detection information of the first inner tube 511 and/or the operation end 4, so that the driving component 60 controls the movement of the second inner tube 521 through the transmission component 80, and the third flexible structure 53 and the end effector 6 are driven to approach and be far away from the target tissue, thereby avoiding secondary injuries such as dropping of a stamp card and edema due to repeated entering and exiting of the surgical instrument 1 in the surgical process. Further, the first inner tube 511 and the second inner tube 521 are hollow structures, and have a central passage extending through the entire length thereof, so as to conveniently accommodate a part of the transmission member (such as a flexible shaft). Further, the transmission member is disposed within the housing 315 of the instrument platform 3 to reduce the volume of the surgical instrument.

Further, the first inner tube 511 comprises a first proximal section, a first middle section and a first distal section which are connected from the proximal end to the distal end, and the first proximal section and the first distal section are substantially rigid (i.e. rigid members) and the first middle section is substantially flexible (i.e. flexible members). In the present embodiment, "rigid" means that the partial components do not bend or distort themselves during the use (operation). In the present embodiment, "flexible" means that the partial components can be relatively bent and deformed during the use (operation). The first proximal section is connected to the handling end 4. Further, the first outer tube 512 comprises a first proximal portion, a first flexible structure 513 and a first distal portion connected in sequence from the proximal to the distal, the first distal portion being connected to the instrument platform 3. The sum of the axial lengths of the first proximal section and the first middle section of the first inner tube 511 is greater than the sum of the axial lengths of the first proximal section and the first flexible structure 513; the first distal section of the first inner tube 511 is received in the first distal portion of the first outer tube 512, and the first distal section may extend further into the instrument platform 3, such as into an instrument channel within the instrument platform 3.

For example, as shown in fig. 7a, the proximal end of the first proximal section of the first inner tube 511 is configured as a stepped rigid tube, and specifically includes a first inner sub-tube 5111 and a second inner sub-tube 5112, wherein the outer diameter of the first inner sub-tube 5111 is not greater than the inner diameter of the first proximal portion of the first outer tube 512, so that the first inner sub-tube 5111 is directly received in the first proximal portion of the first outer tube 512, and the outer diameter of the second inner sub-tube 5112 is greater than the inner diameter of the first proximal portion, so that when the first outer tube 512 is fixed and the first inner tube 511 is pushed distally, the second inner sub-tube 5112 can abut against the first proximal portion of the first outer tube 512, thereby limiting the first inner tube 511 to continue to move distally. At this time, the sum of the axial lengths of the first sub-inner tube 5111 and the first middle section is greater than the sum of the axial lengths of the first proximal end portion and the first flexible structure 513.

Further, the second inner tube 521 comprises a second proximal section, a second middle section and a second distal section which are connected in sequence from the proximal end to the distal end, and the second proximal section and the second distal section are substantially rigid, and the second middle section is substantially flexible. In the present embodiment, "rigid" means that the partial components do not bend or distort themselves during the use (operation). In the present embodiment, "flexible" means that the partial components can be relatively bent and deformed during the use (operation). Further, the second outer tube 522 comprises a second proximal end portion, a second flexible structure 523 and a second distal end portion connected in sequence from the proximal end to the distal end, and the second proximal end portion is connected to the instrument platform 3 or the cannula 311. Optionally, the second proximal section of the second inner tube 521 may extend into the instrument platform 3 to connect with a drive member within the instrument platform 3. The distal end of the second distal section of the second inner tube 521 may extend through the distal end of the second outer tube 522 and connect with the third flexible structure 53. Further, the sum of the axial lengths of the second middle section and the second distal section of said second inner tube 521 is larger than the sum of the axial lengths of the second flexible structure 523 and the second distal end portion of the second outer tube 522.

Likewise, the distal end of the second distal section of the second inner tube 521 is also configured as a stepped rigid tube, specifically including a third sub-inner tube 5211 and a fourth sub-inner tube 5212. Wherein the outer diameter of the third sub-inner tube 5211 is not greater than the inner diameter of the second distal end portion of the second outer tube 522, so that the third sub-inner tube 5211 is directly accommodated in the second distal end portion; and the outer diameter of the fourth inner sub-tube 5212 is larger than the inner diameter of the second distal end portion, such that when the second outer tube 522 is immobilized and the second inner tube 521 is retracted proximally, the fourth inner sub-tube 5212 can abut against the second distal end portion, thereby limiting the second inner tube 521 from continuing to move proximally. At this time, the sum of the axial lengths of the third sub-inner tube 5211 and the second middle section is greater than the sum of the axial lengths of the second distal end portion and the second flexible structure 523.

In an alternative embodiment, the connection assembly 5 may also comprise an outer tube and an inner tube, wherein the outer tube corresponds to the first outer tube and the second outer tube, the inner tube corresponds to the first inner tube and the second inner tube, i.e. the outer tube is sleeved on the inner tube, and the inner tube is longer than the outer tube, such that the proximal end of the inner tube extends out of the outer tube to be connected to the operation end 4, and the distal end of the inner tube extends out of the outer tube, preferably through the third flexible structure 53, to be connected to the end-effector 6. Preferably, the inner tube is movable relative to the outer tube. Further, the outer tube is fixedly connected to the instrument platform 3, such as detachably connected to an instrument channel in the instrument platform 3. For example, the outer tube is provided with a positioning device for positioning the outer tube in the instrument channel, so that the surgical instrument is prevented from undesired movement in the instrument channel, and the problems that the poking card falls off or subcutaneous injury is caused by repeated entry and exit of the surgical instrument are avoided. Further, the first flexible structure 513 is disposed at the proximal end of the outer tube, and the second flexible structure 523 is disposed at the distal end of the outer tube. Preferably, a third flexible structure 53 is attached to the distal end of the inner tube. And similarly, it is also necessary to detect the rotation of the first flexible structure 513 through the sensing component and obtain rotation detection information, so that the control component 50 controls the driving component 60 to output power according to the rotation detection information of the first flexible structure 513, and the driving component 60 drives the second flexible structure 523 to rotate in the direction opposite to the rotation direction of the first flexible structure 513 through the transmission component 80.

It should be appreciated that, the above-mentioned embodiment, through the linkage (i.e. making mirror motion) of the first flexible structure 513 and the second flexible structure 523, achieves the purpose that two or more surgical instruments can be inserted into the human body simultaneously for performing the surgical operation without interference during the operation, thus reducing the secondary injury to the patient, and the surgical instruments can also approach the same target tissue simultaneously for performing the surgical operation, thereby increasing the operation space of the surgical instrument and reducing the operation difficulty. In particular, the control unit 50 controls the driving unit 60 to adjust the rotational posture of the second flexible structure 523 according to the rotational posture of the first flexible structure 513, so that the movement of the second flexible structure 523 is more accurate and the surgical precision is higher.

Further, the sensing component 70 is further configured to detect the movement of the operation end 4 and send the obtained movement detection information of the operation end 4 to the control component 50, and the control component 50 is further configured to control the driving component 60 to output power according to the movement detection information of the operation end 4, so that the driving component 60 drives the end effector 6 to complete corresponding movement through the transmission component 80, and the movement direction of the end effector 6 is the same as the movement direction of the operation end 4.

With continued reference to fig. 6, the operation end 4 specifically includes a manipulation structure 41, a wrist structure 42 and a holding structure 43 connected in sequence. The manipulation structure 41 is arranged on the wrist structure 42 for driving the wrist structure 42 in motion. The wrist structure 42 has at least one rotational degree of freedom, in which case the wrist structure 42 is connected to the proximal end of the grip structure 43 such that the wrist structure 42 is rotatable relative to the grip structure 43. And the gripping formation 43 is connected to the proximal end of the connecting assembly 5. Further, the holding structure 43 is connected to the proximal end of the first connecting structure 51. Preferably, the holding structure 43 is an arc-shaped structure, and the present invention has no special requirement on the specific curve shape of the arc-shaped structure, and can be designed according to ergonomics. Optionally, a proximal end of the holding structure 43 is provided with a proximal end mounting seat, a distal end is provided with a distal end mounting seat, the proximal end mounting seat is connected to the wrist structure 42, the distal end mounting seat is fixedly connected to the connecting assembly 5, and the fixing connection mode may be detachable or non-detachable connection.

In this embodiment, wrist structure 42 has two rotational degrees of freedom, one about a fifth axis R5 and one about a sixth axis R6, preferably with the fifth axis R5 perpendicular to the sixth axis R6. The third flexible structure 53 has at least one degree of freedom of rotation, for example two degrees of freedom of rotation, respectively a degree of freedom of rotation about a seventh axis R7 and a degree of freedom of rotation about an eighth axis R8, preferably the seventh axis R7 is perpendicular to the eighth axis R8. Further, the fifth axis R5 is parallel to the seventh axis R7, and the sixth axis R6 is parallel to the eighth axis R8. Further, when the wrist structure 42 is driven by the manipulating structure 41 to rotate around the fifth axis R5, the sensing component 70 detects the rotation of the wrist structure 42 around the fifth axis R5 and sends the obtained third rotation detection information of the wrist structure 42 to the control component 50, the control component 50 controls the driving component 60 to output power according to the third rotation detection information of the wrist structure 42, and the driving component 60 drives the third flexible structure 53 to rotate around the seventh axis R7 through the transmission component 80 in the same direction as the rotation direction of the wrist structure 42. Similarly, when the wrist structure 42 is driven by the manipulating structure 41 to rotate around the sixth axis R6, the sensing component 70 detects the rotation of the wrist structure 42 around the sixth axis R6 and sends the obtained fourth rotation detection information of the wrist structure to the control component 50, the control component 50 controls the driving component 60 to output power according to the received fourth rotation detection information, and the driving component 60 drives the third flexible structure 53 to rotate around the eighth axis R8 through the transmission component 80 in the same direction as the rotation direction of the wrist structure 42. Finally, the third flexible structure 53 drives the end effector 6 to do pitching swing and deflecting swing.

The above-mentioned embodiment realizes the rotation (including pitch and yaw) of the operation end 4 and the end effector 6 in the same direction through the rotation of the wrist structure 42 and the third flexible structure 53 in the same direction, and in doing so, facilitates two or more surgical instruments to approach the same target tissue in vivo for performing surgical operations, thereby further reducing the surgical difficulty. And the control component controls the driving component to adjust the rotating posture of the end effector 6 according to the rotating posture of the operation end 4, so that the movement of the end effector 6 is more accurate, and the operation precision is further improved.

With continued reference to fig. 6, the steering structure 41 further has a rotational degree of freedom about a ninth axis R9, and correspondingly, the end effector 6 has a rotational degree of freedom about a tenth axis R10. In particular, the manipulation structure 41 is rotatably arranged on the wrist structure 42. Correspondingly, the end effector 6 is rotatably connected to the third flexible structure 53. In practice, when the manipulation structure 41 performs the rotation motion around the ninth axis R9, the sensing component 70 detects the rotation of the manipulation structure 41 and sends the obtained rotation detection information of the manipulation structure 41 to the control component 50, the control component 50 controls the driving component 60 to output power according to the rotation detection information of the manipulation structure 41, the driving component 60 further drives the end effector 6 through the transmission component 80 to perform the rotation motion, and the rotation direction of the end effector 6 is the same as the rotation direction of the manipulation structure 41. The rotation angle of the end effector 6 and the rotation angle of the manipulation structure 41 may be configured to be equal or proportional.

Furthermore, the actuation structure 41 has a telescopic freedom of movement in the axial direction, and correspondingly, the end effector 6 also has a telescopic freedom of movement in the axial direction. In this case, the manipulation structure 41 is movably arranged on the wrist structure 42. In this embodiment, when the manipulation structure 41 performs the telescopic motion, the sensing component 70 detects the movement of the manipulation structure 41 and sends the obtained movement detection information of the manipulation structure 41 to the control component 50, the control component 50 controls the driving component 60 to output power according to the movement detection information of the manipulation structure 41, the driving component 60 drives the end effector 6 to perform the telescopic motion through the transmission component 80, and the telescopic direction of the end effector 6 is the same as the telescopic direction of the manipulation structure 41. Specifically, as mentioned above, the proximal end of the first inner tube 511 is connected to the manipulating structure 41, and the manipulating structure 41 drives the first inner tube 511 to translate along the eleventh axis R11. Therefore, the movement of the manipulation structure 41 can be determined by detecting the movement of the first inner tube 511, and in practice, the sensing component 70 may detect the movement of the first inner tube 511, the movement of the manipulation structure 41, or both, which is not limited by the present invention. Further, according to the movement detection information of the first inner tube 511 and/or the manipulation structure 41, the control component 50 controls the driving component 60 to output power, and the driving component 60 drives the second inner tube 521 to translate along the twelfth axis R12 through the transmission component 80, so as to drive the end effector 6 to translate.

The surgical instrument 1 may have different degrees of freedom for different end effectors 6. For example, the end effector 6 includes one tool flap or two tool flaps. The end effector 6 is a clamp, i.e. comprising two tool petals, which can perform a clamping action, as shown for example in fig. 8 a. The driving member 60 can drive the end effector 6 to open and close through the transmission member 80. As shown in fig. 8b, the manipulation end 4 further includes an opening/closing control structure 44 disposed on the manipulation structure 41. In practice, when the opening and closing control structure 44 makes opening and closing movement, the sensing component 70 detects the opening and closing movement of the opening and closing control structure 44 and sends the obtained opening and closing detection information of the opening and closing control structure 44 to the control component 50, the control component 50 controls the driving component 60 to output power according to the received opening and closing detection information, and the driving component 60 drives the tool flap of the end effector 6 to make opening and closing movement through the transmission component 80. The opening and closing movement manner (i.e., the movement configuration) of the opening and closing control structure 44 is the same as the opening and closing movement manner of the end effector 6, that is, the opening and closing control structure 44 is opened, the tool flap of the end effector 6 is also opened, and if the opening and closing control structure 44 is closed, the tool flap of the end effector 6 is also closed. The operation structure 41 includes, for example, an operation rod (not labeled, see fig. 8b), and in an embodiment, the opening and closing control structure 44 includes a first opening and closing flap and a second opening and closing flap, one end of each opening and closing flap is rotatably connected to the operation rod of the operation structure 41, and the other end of each opening and closing flap extends outward from the operation rod. In another embodiment, the opening and closing control structure 44 may also include only one opening and closing flap.

With further reference to fig. 9, in the present embodiment, the sensing component 70 may include a first sensor 71 and a second sensor 72, wherein the first sensor 71 is configured to detect a pitch motion S5 of the wrist structure 42, and the second sensor 72 is configured to detect a yaw motion S6 of the wrist structure 42. Further, the first sensor 71 and the second sensor 72 are angle sensors, such as rotating shaft code discs, rotating encoders. The sensing part 70 further includes a third sensor 73 for detecting the opening and closing movement S13 of the opening and closing control structure 44. The sensing member 70 further comprises a fourth sensor 74 for detecting the rotation movement S9 of the handling structure 41. Further, the third sensor 73 is a hall sensor, and is disposed between the opening and closing flap of the opening and closing control structure 44 and the control structure 41, and is used for detecting a rotational movement between the opening and closing flap of the opening and closing control structure 44 and the control structure 41. In other embodiments, the third sensor 73 can also be a rotating shaft code wheel, at least one in number, disposed on the rotating shaft at the proximal end of the opening and closing flap of the opening and closing control structure 44 for detecting the rotating movement of the opening and closing flap. The fourth sensor 74 may also be an angle sensor, such as a rotary encoder, for detecting the rotation of the control structure 41 about its own axis. The sensing member 70 further comprises a fifth sensor 75 and a sixth sensor 76, the fifth sensor 75 being configured to detect a pitching motion S1 of the first flexible structure 513, and the sixth sensor 76 being configured to detect a yawing motion S2 of the first flexible structure 513. Further, the fifth sensor 75 and the sixth sensor 76 are both angle sensors. The sensing part 70 further includes a seventh sensor 77 for detecting the telescopic movement S11 of the manipulation end 4, i.e., the telescopic movement of the first inner tube 511. The seventh sensor 77 may be selected as a linear sensor.

The motion information detected by any one of the sensors is sent to the control component 50, the control component 50 further controls the driving component 60 to output power according to the motion information, and the driving component 60 further controls the end effector 6, the third flexible structure 53, the second flexible structure 523 and the second inner tube 521 to move correspondingly through the transmission component 80. For example, based on the detection information of the third sensor 73, the driving part 60 controls the end effector 6 to perform the opening and closing movement S14 corresponding to the opening and closing movement S13 of the manipulation end 4 through the transmission part 80; for example, based on the detection information of the fourth sensor 74, the driving member 60 controls the end effector 6 to perform the rotation motion S10 corresponding to the operation end 4 through the transmission member 80; for another example, according to the detection information of the seventh sensor 77, the driving component 60 controls the end effector 6 to perform the corresponding telescopic motion S12 through the transmission component 80; for example, according to the detection information of the first sensor 71 and the second sensor 72, the transmission component 80 controls the third flexible structure 53 to perform a pitching motion S7 and a yawing motion S8 in the same direction as the wrist structure 42, so that the third flexible structure 53 drives the end effector 6 to perform a pitching motion and a yawing motion in the same direction as the operation end 4. Similarly, according to the detection information of the fifth sensor 75 and the sixth sensor 76, the driving unit 60 controls the second flexible structure 523 through the transmission unit 80 to perform a pitching motion S3 and a yawing motion S4 in the opposite directions to the first flexible structure 513, respectively.

Further, referring to fig. 9, the transmission component 80 includes a first transmission component 81 and a second transmission component 82, the first transmission component 81 is used for converting the movement of the first connection structure 51 into the movement capable of being detected by the sensing component 70, and the second transmission component 82 is connected with the driving component 60 to drive the second connection structure 52 to move. Further, the first transmission component 81 is used for converting the movement of the operation end 4, the first flexible structure 513 and the first inner tube 511 into a movement capable of being detected by the sensor, and the second transmission component 82 is used for driving the third flexible structure 53, the end effector 6, the second inner tube 521 and the second flexible structure 523 to complete corresponding movements.

For pitch and yaw motions of the first flexible structure 513, the first transmission component 81 may include a first transmission wire set and a second transmission wire set. The first drive wire set includes a first drive wire and a first wire wheel for translating a pitch motion of the first flexible structure 513 about the first axis R1 into a rotational motion of the first wire wheel via the first drive wire. The second drive wire set includes a second drive wire and a second wire wheel for translating a deflecting motion of the first flexible structure 513 about the second axis R2 into a rotating motion of the second wire wheel via the second drive wire. Specifically, the proximal end of the first transmission wire in the first transmission wire group is connected to the first flexible structure 513, and the distal end of the first transmission wire group is connected to the first flexible structure 513 after passing around the first wire wheel, so that the first wire wheel in the first transmission wire group can rotate along with the first flexible structure 513 when pitching around the first axis R1; the second driving wire of the second driving wire set is also connected to the first flexible structure 513 at a proximal end thereof and connected to the first flexible structure 513 at a distal end thereof after being wound around the second wire wheel, so that the second wire wheel of the second driving wire set can follow the rotational movement of the first flexible structure 513 when it is deflected about the second axis R2. Further, the fifth sensor 75 is provided on the first wire wheel, and the sixth sensor 76 is provided on the second wire wheel. The fifth sensor 75 detects the rotation of the first wire wheel and sends the obtained rotation detection information of the first wire wheel to the control part 50, and the control part 50 determines the rotation state (or rotation posture) of the first flexible structure 513 around the first axis R1 according to the rotation detection information of the first wire wheel and controls the driving part 60 to output power to drive the second flexible structure 523 around the third axis R3 according to the rotation detection information of the first wire wheel. Similarly, the sixth sensor 76 detects the rotation of the second wire wheel and sends the obtained rotation detection information of the second wire wheel to the control unit 50, and the control unit 50 determines the rotation state of the first flexible structure 513 around the second axis R2 according to the rotation detection information of the second wire wheel, and controls the driving unit 60 to output power to drive the second flexible structure 523 around the fourth axis R4 according to the rotation detection information of the second wire wheel.

Similarly, the first transmission member 81 may further include a third transmission wire set and a fourth transmission wire set for pitch and yaw motions of wrist structure 42. Wherein the third drive wire set includes a third drive wire and a third wire wheel, the third drive wire set being configured to convert a pitch motion of the wrist structure 42 about the fifth axis R5 into a rotational motion of the third wire wheel via the third drive wire; the fourth drive wire set includes a fourth drive wire and a fourth wire wheel, the fourth drive wire set for translating a yaw motion of wrist structure 42 about sixth axis R6 into a rotational motion of the fourth wire wheel via the fourth drive wire. Specifically, the proximal end of the third transmission wire in the third transmission wire group is connected with the wrist structure 42, and the distal end of the third transmission wire group is connected with the wrist structure 42 after bypassing the third wire wheel, so that the third wire wheel in the third transmission wire group can rotate along with the wrist structure 42 when pitching around the fifth axis R5; and the near end of the fourth transmission wire in the fourth transmission wire group is also connected with the wrist structure 42, and the far end of the fourth transmission wire group is connected with the wrist structure 42 after bypassing the fourth wire wheel, so that the fourth wire wheel in the fourth transmission wire group can rotate along with the wrist structure 42 when deflecting around the sixth axis R6. Further, the first sensor 71 is provided on the third reel, and the second sensor 72 is provided on the fourth reel. The first sensor 71 detects the rotation of the third wire wheel and sends the obtained rotation detection information of the third wire wheel to the control component 50, and the control component 50 determines the rotation state (or called rotation posture) of the wrist structure 42 around the fifth axis R5 according to the rotation detection information of the third wire wheel, and further controls the driving component 60 to output power according to the rotation detection information of the third wire wheel so as to drive the third flexible structure 53 to rotate around the seventh axis R7. Similarly, the second sensor 72 detects the rotation of the fourth wire wheel and sends the obtained rotation detection information of the fourth wire wheel to the control unit 50, and the control unit 50 determines the rotation state of the wrist structure 42 around the sixth axis R6 according to the rotation detection information of the fourth wire wheel and controls the driving unit 60 to output power to drive the third flexible structure 53 to rotate around the eighth axis R8 according to the rotation detection information of the fourth wire wheel. Preferably, all of the wire wheels described above are mounted in a housing 315 of the instrument platform 3.

Further, for the case that the manipulation structure 41 moves along the axial direction of the connection assembly 5, the first transmission member 81 may include a first rack and pinion transmission mechanism. The first rack and pinion gear comprises a first rack and a first pinion in meshed connection, the first rack being connected to the first inner tube 511, for example to a first distal section of the first inner tube 511, so that a movement of the first inner tube 511 is converted into a rotational movement of the first pinion. The seventh sensor 77 is disposed on the first gear and is used for detecting the rotation of the first gear, so as to determine the moving state of the first inner tube 511, i.e., the moving state of the manipulation structure 41, according to the rotation detection information of the first gear. The control part 50 controls the driving part 60 to output power to drive the second inner pipe 521 to move according to the rotation detection information of the first gear. Preferably, the first rack and pinion drive is arranged in a housing 315 of the instrument platform 3.

Further, for the rotation of the control structure 41, the first transmission member 81 further includes a first rotation shaft set, the first rotation shaft set includes a first flexible shaft and a first rotation wheel, the proximal end of the first flexible shaft is connected to the control structure 41, and the distal end of the first flexible shaft is connected to the first rotation wheel, so that the first rotation wheel rotates along with the rotation of the control structure 41. And the fourth sensor 74 is disposed on the first rotation wheel and is used for detecting the rotation of the first rotation wheel, so as to determine the rotation state of the control structure 41 according to the rotation detection information of the first rotation wheel, so that the control component 50 controls the driving component 60 to output power according to the rotation detection information of the first rotation wheel, and the driving component 60 drives the end effector 6 to rotate through the second transmission component 82. Preferably, the first rotation wheel is arranged in a housing 315 of the instrument platform 3, and the first flexible shaft may extend through the wrist structure 42, the grip structure 43 and the first connecting structure 51 into the housing 315.

Preferably, the opening and closing movement of the opening and closing control structure 44 is directly detected by the third sensor 73 without conversion, for example, the third sensor 73 is disposed on a rotating shaft of the opening and closing control structure 44 for detecting the opening and closing movement of the opening and closing flap of the opening and closing control structure 44.

Further, the control part 50 and the drive part 60 are both arranged in a housing 315 of the instrument platform 3. The driving unit 60 specifically includes a plurality of motors, and each motor controls the end effector 6, the third flexible structure 53, the second flexible structure 523, and the second inner tube 521 to complete corresponding actions through the second transmission unit 82. The control unit 50 is in communication with the sensing unit 70 and the driving unit 60, respectively, and is mainly in communication with the electrical components of these components, thereby controlling the automated operation of the actuating components of these components. The type of the control unit 50 is not particularly limited in this embodiment, and may be hardware for executing logical operations, such as a single chip, a microprocessor, a Programmable Logic Controller (PLC) or a Field-Programmable Gate Array (FPGA), or a software program, a function module, a function, an Object library (Object Libraries) or a Dynamic Link library (Dynamic-Link Libraries) for implementing the above functions on a hardware basis. Alternatively, a combination of the above two. Those skilled in the art will know how to implement the communication between the control unit 50 and the other units based on the disclosure of the present application.

Further, the second transmission member 82 includes a fifth transmission wire set and a sixth transmission wire set. The fifth transmission wire set is used for driving the second flexible structure 523 to perform pitching motion, and the sixth transmission wire set is used for driving the second flexible structure 523 to perform deflecting motion. Specifically, the fifth transmission wire set includes at least two fifth transmission wires, proximal ends of the two fifth transmission wires are respectively connected to the first motor (i.e., the first driving component), and distal ends of the two fifth transmission wires are respectively fixed to the second flexible structure 523, so that the first motor drives the second flexible structure 523 to perform a pitching motion (i.e., rotate around the third axis) through the two fifth transmission wires; the sixth transmission wire group includes at least two sixth transmission wires, the proximal ends of the two sixth transmission wires are respectively connected to the second motor (i.e., the second driving component), and the distal ends of the two sixth transmission wires are respectively fixedly connected to the second flexible structure 523, so that the second motor drives the second flexible structure 523 to perform deflection motion (i.e., rotate around the third axis) through the two sixth transmission wires.

Further, the second transmission member 82 includes a seventh transmission wire set and an eighth transmission wire set. The seventh transmission wire set is used for driving the third flexible structure 53 to perform pitching motion, and the eighth transmission wire set is used for driving the third flexible structure 53 to perform deflecting motion. Specifically, similar to the fifth transmission wire group and the sixth transmission wire group, the seventh transmission wire group includes at least two seventh transmission wires, proximal ends of the two seventh transmission wires are respectively connected to the third motor (i.e., the third driving component), and distal ends of the two seventh transmission wires respectively penetrate through the second flexible structure 523 and then are fixedly connected to the third flexible structure 53, so that the third motor drives the third flexible structure 53 to perform a pitching motion (i.e., rotate around the seventh axis) through the two seventh transmission wire groups; the eighth transmission wire group comprises at least two eighth transmission wires, the proximal ends of the two eighth transmission wires are respectively connected with the fourth motor, and the distal ends of the two eighth transmission wires respectively penetrate through the second flexible structure 523 and then are fixedly connected with the third flexible structure 53, so that the fourth motor drives the third flexible structure 53 to perform deflection motion (namely rotate around an eighth axis) through the two eighth transmission wire groups. Further, the output ends of the first motor, the second motor, the third motor and the fourth motor are all provided with wire wheels, so that each motor is connected with the second transmission component 82 through the wire wheels at the output ends of the motors.

The second transmission member 82 also includes a second rack and pinion gear. The second rack and pinion gear comprises a second gear and a second rack, wherein the second gear and the second rack are in meshed connection, the second gear is connected with a fifth motor (namely, a fifth driving component), and the second rack is connected with the second inner tube 521, for example, the second proximal end section of the second inner tube 521, so that the fifth motor drives the second inner tube 521 to translate through a second rack and pinion motion mechanism, thereby realizing the translation of the end effector 6.

The second transmission component 82 further comprises a second rotating shaft group, the second rotating shaft group comprises a second flexible shaft, the proximal end of the second flexible shaft is connected with a sixth motor (namely, a sixth driving component), and the distal end of the second flexible shaft is connected with the end effector 6. In practice, when the manipulation structure 41 performs the rotation motion around the ninth axis R9, the fourth sensor 74 detects the rotation motion of the manipulation structure 41 and sends the rotation detection information of the manipulation structure 41 to the control unit 50, and the control unit 50 controls the driving unit 60 to transmit the rotation motion to the end effector 6 through the second flexible shaft according to the rotation detection information of the manipulation structure 41, so that the end effector 6 performs the rotation motion around the tenth axis R10. Further, the end effector 6 includes a proximal end effector mounting base, and the distal end of the second flexible shaft is connected to the proximal end effector mounting base, so that the proximal end effector mounting base can rotate around a tenth axis R10. And the proximal actuator mount is rotatably connected to the third flexible structure 53. Preferably, the first flexible shaft and the second flexible shaft are made of a material capable of transmitting torque, such as tungsten wires or nickel titanium core wires.

The second transmission component 82 further comprises a first conversion piece, an opening and closing flexible transmission mechanism and a second conversion piece which are sequentially connected; the first conversion part is connected with a seventh motor (namely a seventh driving part) and is used for converting the rotary motion of the seventh motor into the axial motion of the opening and closing flexible transmission mechanism, and the second conversion part is connected with a tool valve of the end effector and is used for converting the axial motion of the opening and closing flexible transmission mechanism into the opening and closing motion of the tool valve; and the opening and closing flexible transmission structure, the first conversion piece and the second conversion piece are configured to enable the opening and closing control structure to move in the same manner as the tool valve of the end effector. The opening and closing flexible transmission structure is a transmission wire or flexible shaft structure capable of transmitting torque. When the opening and closing control structure 44 performs the opening and closing movement, the third sensor 73 detects the opening and closing movement of the opening and closing control structure 44, and sends the opening and closing movement detection information of the opening and closing control structure 44 to the control part 50, and the control part 50 controls the driving part 60 to drive the end effector 6 to perform the opening and closing movement through the first converting part, the opening and closing flexible transmission mechanism and the second converting part according to the opening and closing movement detection information of the opening and closing control structure 44. In a preferred embodiment, finger structures can be disposed on the two open/close flaps of the open/close control structure 44, and the finger structures have cavities for human fingers to insert, so that the doctor can more effectively and comfortably control the open/close movement of the open/close flaps.

It is further noted that all the driving wires of the present embodiment are made of flexible material capable of transmitting torque, such as nickel-titanium wire, tungsten wire, etc. And all motors are integrated within the housing 315 of the instrument platform 3.

Preferably, the surgical device 1 further includes a locking structure, such as a locking button, and when the operator presses the locking button, the control unit 50 can control the locking structure to maintain the surgical device 1 in an open state at any angle. In addition, the swinging motion of the first flexible structure and the second flexible structure is preferably locked by a locking structure, and the locking mode can be locking the transmission wire set or locking the flexible structures. Moreover, the swinging motion of the manipulation structure and the third flexible structure 53 are preferably locked by a locking structure, and the locking mode can be locking a transmission wire set or locking the manipulation structure, the flexible structure and the like. Preferably, the transmission component 80 further comprises a locking structure for locking the rotation motion of the end effector, for example, by locking the flexible shaft. The locking structure of the surgical instrument can also realize opening and closing locking, for example, the opening and closing locking is realized by locking the opening and closing movement of the opening and closing control structure, the axial movement of the opening and closing flexible transmission mechanism, the opening and closing movement of the end effector and the like.

With continued reference to fig. 5 and 6, preferably, the second axis R2 is perpendicular to the working surface of the instrument assembly 40, and correspondingly, the fourth axis R4 is also perpendicular to the working surface. Preferably, the fifth axis R5 is perpendicular to the working surface, and correspondingly, the seventh axis R7 is perpendicular to the working surface.

Further, the present invention has no particular limitation on the specific configuration of the flexible structure, and can realize swinging operation in two directions (preferably two perpendicular directions), and in a preferred embodiment, as shown in fig. 10, the flexible structure is a serpentine joint S having two swinging degrees of freedom, and the serpentine joint S can rotate around two mutually perpendicular axes C1 and C2 respectively. Likewise, the present invention is not limited to a specific configuration of the wrist structure 42, and the wrist structure 42 can perform swinging operation in two directions (preferably two perpendicular directions), and preferably, the wrist structure 42 is a hook hinge structure, a ball hinge structure or a serpentine hinge structure.

Further, as shown in fig. 11a and 11b, with the above configuration, the end effector 6 and the manipulation structure 41 are rotated in the same direction and in the same posture. As the manipulation structure 41 of fig. 11B is switched between the respective states A, B, C, D, the end effector 6 of fig. 11a is also switched between the corresponding states a ', B', C ', D', enabling a homogeneous operation of the manipulation structure 41 and the end effector 6. And the third flexible structure 53 can realize two-degree-of-freedom operation under the control of the driving part 60, and can drive the end effector 6 to accurately approach/leave the tissue region, thereby completing the surgical operation.

It is further preferred that the second drive wire set further comprises a resilient structure, such as a compression spring, for compensating for the amount of bending of the second drive wire set such that the surgical device 1 is maintained in the open configuration. When the surgical instrument 1 is adjusted from the initial state to the open state, the angles of the first flexible structure 513 and the second flexible structure 523 need to be adjusted, and by providing the elastic structure, the state of the transmission wire in the second transmission wire set can be adjusted, so that the configuration of the surgical instrument 1 in the open state can be maintained, and the posture of the end effector can be maintained. More specifically, at least a part of the sections of the drive wires in the second drive wire group are connected with compression springs to compensate the bending amount of the drive wires.

In summary, in the surgical instrument platform provided by the embodiment of the invention, the connecting assembly is controlled by the driving component to move, so that the motion control precision of the end effector is higher, and the surgical operation is more convenient and comfortable. Especially, the surgical instrument platform has realized that two or more surgical instruments 1 can insert the human body simultaneously and operate and can not take place to disturb through the linkage of first flexible construction and second flexible construction, has reduced the secondary damage that causes patient like this, and these surgical instruments 1 still can be close same target tissue simultaneously and operate moreover to increase surgical instruments's operating space, reduced the operation degree of difficulty. In addition, in the operation process, suspend the apparatus subassembly through the adjustment subassembly in midair, can save the trouble of the handheld whole apparatus subassembly of operation of doctor, operate like this and more save time and laborsaving, and the operation is more accurate and reliable. In addition, the present invention is not particularly limited to the configuration of the two surgical instruments in the initial state, and may be a Y-shaped symmetrical structure or an asymmetrical structure.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the present invention.

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