阅读说明：本技术 一种双螺旋蛇骨和内窥镜 (Double-helix snake bone and endoscope ) 是由 张俊俊 李凌 辜嘉 李文超 于 2019-10-21 设计创作，主要内容包括：一种双螺旋蛇骨,由第一螺旋体和第二螺旋体同步向相同方向螺旋形成空心螺旋管结构,第一螺旋体和第二螺旋体之间通过多个关节连接,多个关节分别位于空心螺旋管结构相对设置的第一侧和第二侧,位于空心螺旋管结构的第一侧的关节和位于螺旋管结构的第二侧的关节相对设置。上述双螺旋蛇骨绕关节进行弯曲,位于空心螺旋管结构的第一侧的关节和位于螺旋管结构的第二侧的关节相对设置,两个相对设置的关节之间的连线垂直于双螺旋蛇骨的转向面,从而使双螺旋蛇骨的弯曲点垂直于双向蛇骨活动平面。双螺旋蛇骨能够使双螺旋蛇骨能够在整个弯曲平面上活动,而不会在双螺旋蛇骨运动时候发生方向偏移。此外,还提供一种包括上述双螺旋蛇骨的内窥镜。(The utility model provides a double helix snake bone, is synchronous to the equidirectional spiral by first spirochaeta and second spirochaeta and forms hollow spiral tube structure, through a plurality of articulated connections between first spirochaeta and the second spirochaeta, a plurality of joints are located the relative first side and the second side that set up of hollow spiral tube structure respectively, and the joint that is located the first side of hollow spiral tube structure sets up with the joint that is located the second side of spiral tube structure relatively. The double-spiral snake bone is bent around the joint, the joint on the first side of the hollow spiral tube structure and the joint on the second side of the spiral tube structure are oppositely arranged, and a connecting line between the two oppositely arranged joints is perpendicular to the turning surface of the double-spiral snake bone, so that the bending point of the double-spiral snake bone is perpendicular to the two-way snake bone moving plane. The double-helix snake bone can move on the whole bending plane without direction deviation when the double-helix snake bone moves. In addition, an endoscope comprising the double-helix snake bone is also provided.)

1. The utility model provides a double helix snake bone, its characterized in that includes first spirochaeta and second spirochaeta, first spirochaeta with the second spirochaeta is synchronous to the equidirectional spiral and is formed hollow spiral tube structure, first spirochaeta with the second spirochaeta interval sets up, first spirochaeta with connect through a plurality of joints between the second spirochaeta, a plurality of joints are located respectively the first side and the second side of hollow spiral tube structure, first side with the second side sets up relatively, is located hollow spiral tube structure the joint of first side with be located the spiral tube structure the joint of second side sets up relatively.

2. The double helix snake bone of claim 1 wherein the first helix comprises a first side line and a second side line disposed opposite to each other, wherein the first side line is spaced apart from each other by a plurality of first sockets, wherein the second side line is spaced apart from each other by a plurality of first joints, wherein the second helix is disposed opposite to each other by a third side line and a fourth side line, wherein the third side line is spaced apart from each other by a plurality of second sockets, wherein the fourth side line is spaced apart from each other by a plurality of second joints, wherein the first joints are matched with the second sockets, the second joints are matched with the first sockets, the first joints are disposed in the second sockets, the first joints and the second sockets form first joints, the second joints are disposed in the first sockets, and the second joints and the first sockets form second joints, the joints include the first joint and the second joint.

3. The double-helix snake bone of claim 2, wherein the first glenoid fossa is arc-shaped, the first joint head comprises a first connector and a first connector, the first connector is fixedly arranged on the second side edge line of the first helical body through the first connector, the first connector is a circle center, and the first connector is arranged in the second glenoid fossa;

the second joint socket is circular-arc, the second joint head comprises a second connecting piece and a second connector, the second connector passes through the second connecting piece is fixed to be located on the fourth side line of the second spiral body, the second connector is the circle center, and the second connector is located in the first joint socket.

4. The double helix snake bone of claim 3 wherein said first glenoid fossa is preferably arcuate and said second glenoid fossa is preferably arcuate.

5. The double spiral snake bone of claim 1 wherein said spiral tube structure comprises a third side and a fourth side disposed opposite to each other, said third side and said fourth side being disposed on a centerline of a line connecting said first side and said second side, said third side and said fourth side each having a plurality of steel cord perforations disposed in a straight line.

6. The double-spiral snake bone as claimed in claim 5, wherein the first spiral body is provided with a first slot and a second slot which are oppositely arranged, and the part of the first spiral body between the first slot and the second slot is recessed towards the inside of the hollow spiral tube structure to form the first steel rope perforation;

a third open groove and a fourth open groove which are oppositely arranged are formed in the second spiral body, and the part between the third open groove and the fourth open groove in the second spiral body is sunken towards the inner part of the hollow spiral pipe structure to form a second steel rope perforation;

the steel cord perforations comprise the first steel cord perforations and the second steel cord perforations.

7. The double helix snake bone of claim 6, wherein said first and second slots are parallel to said first and second side edges and said third and fourth slots are parallel to said third and fourth side edges.

8. The double spiral snake bone of claim 5 wherein said first side and said second side of said spiral tube structure are each provided with a plurality of steel cord perforations arranged in a straight line.

9. The double helix snake bone of claim 1, wherein the width of the first helix varies gradually along the length of the first helix;

the width of the second spiral body gradually changes along the length direction of the second spiral body;

the width change proportion of the first spiral body is the same as that of the second spiral body.

10. An endoscope, comprising a sensor and a double spiral snake according to any of claims 1-9, said sensor being located at one end of said double spiral snake.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a double-helix snake bone and an endoscope.

Background

At present, the two-way endoscope bending parts are driven by snake bones, and the traditional snake bones generally comprise sectional snake bones and single-spiral integrated snake bones.

The bidirectional endoscope snake bone is designed by using a single spiral mode, and the spiral has an upward angle which is gradually inclined. The movement direction of the snake bone is perpendicular to the connecting line between the two nearest opposite snake bone supporting points. The main reason why the single-spiral integrated snake bone is locally bent in a biased manner during bending is that the bending points distributed in the snake bone are not perpendicular to the plane of the snake bone movement. Referring to fig. 1 and fig. 2, fig. 1 shows a bidirectional single-spiral integrated snake bone 1, because the whole snake bone is in a vertical state, and the connecting line of the two side joint points 2 forms an angle with the extending direction of the snake bone 1 in the vertical state, i.e. as shown in fig. 1, the connecting line of the two side joint points 2 is not on a horizontal plane. In the figure, a circle is a joint point 2, a solid line on the snake bone 1 is a connecting edge of the front surface of the spiral body of the snake bone 1, and a dotted line on the snake bone 1 is a connecting edge of the back surface of the spiral body of the snake bone 1. When the snake bone 1 in fig. 1 turns in the direction of the solid line (front), the joint point 2 is fixed, and the snake bone 1 moves on a plane perpendicular to the line L1 connecting the joint point 2, that is, the snake bone moves on a plane on which the straight line M1 in the figure is located. When the snake bone turns in the direction of the dotted line (back), the joint point is fixed, and the snake bone 1 moves on the plane perpendicular to the direction of the joint point connecting line L2, that is, the snake bone moves on the plane on which the straight line M2 is located in the figure.

Therefore, the single-spiral integrated snake bone can generate local deviation bending when being bent, and the bending angle causes that the snake bone cannot move on a plane when being controlled to bend.

Disclosure of Invention

In view of the above, it is desirable to provide a double helix snake bone and an endoscope that can move in a single plane.

The utility model provides a double helix snake bone, includes first spirochaeta and second spirochaeta, first spirochaeta with the second spirochaeta is synchronous to the equidirectional spiral and is formed hollow spiral tube structure, first spirochaeta with the second spirochaeta interval sets up, first spirochaeta with through a plurality of joint connection between the second spirochaeta, a plurality of joints are located respectively the first side and the second side of hollow spiral tube structure, first side with the second side sets up relatively, is located hollow spiral tube structure the joint of first side with be located the spiral tube structure the joint of second side sets up relatively.

In one embodiment, the first screw includes a first side line and a second side line that are oppositely disposed, a plurality of first joint sockets are arranged on the first side edge at intervals, a plurality of first joint heads are arranged on the second side edge at intervals, the second spiral body is provided with a third side line and a fourth side line which are oppositely arranged, the third side line is provided with a plurality of second glenoid fossa at intervals, a plurality of second joint heads are arranged on the fourth side line at intervals, the first joint heads are matched with the second joint sockets, the second joint head is matched with the first joint socket, the first joint head is arranged in the second joint socket, the first joint head and the second joint socket form a first joint, the second joint head is arranged in the first joint socket, the second joint head and the first socket form a second joint, the joint comprising the first joint and the second joint.

In one embodiment, the first joint socket is arc-shaped, the first joint head comprises a first connecting piece and a first connecting head, the first connecting head is fixedly arranged on the second side edge line of the first spiral body through the first connecting piece, the first connecting head is a circle center, and the first connecting head is arranged in the second joint socket;

the second joint socket is circular-arc, the second joint head comprises a second connecting piece and a second connector, the second connector passes through the second connecting piece is fixed to be located on the fourth side line of the second spiral body, the second connector is the circle center, and the second connector is located in the first joint socket.

In one embodiment, the first socket is preferably arcuate and the second socket is preferably arcuate.

In one embodiment, the spiral tube structure comprises a third side and a fourth side which are oppositely arranged, the third side and the fourth side are arranged on a midline of a connecting line of the first side and the second side, and a plurality of steel rope perforations which are linearly arranged are arranged on the third side and the fourth side.

In one embodiment, the first spiral body is provided with a first open slot and a second open slot which are oppositely arranged, and the part between the first open slot and the second open slot on the first spiral body is sunken towards the inside of the hollow spiral tube structure to form the first steel rope through hole;

a third open groove and a fourth open groove which are oppositely arranged are formed in the second spiral body, and the part between the third open groove and the fourth open groove in the second spiral body is sunken towards the inner part of the hollow spiral pipe structure to form a second steel rope perforation;

the steel cord perforations comprise the first steel cord perforations and the second steel cord perforations.

In one embodiment, the first and second slots are parallel to the first and second side lines, and the third and fourth slots are parallel to the third and fourth side lines.

In one embodiment, a plurality of steel cord perforations arranged in a straight line are provided on both the first side and the second side of the spiral tube structure.

In one embodiment, the width of the first spiral body gradually changes along the length direction of the first spiral body;

the width of the second spiral body gradually changes along the length direction of the second spiral body;

the width change proportion of the first spiral body is the same as that of the second spiral body.

An endoscope comprises a sensor and the double-spiral snake bone, wherein the sensor is arranged at one end of the double-spiral snake bone.

The double-spiral snake bone is bent around the joint, the joint on the first side of the hollow spiral tube structure and the joint on the second side of the spiral tube structure are oppositely arranged, and a connecting line between the two oppositely arranged joints is perpendicular to the turning surface of the double-spiral snake bone, so that the bending point of the double-spiral snake bone is perpendicular to the two-way snake bone moving plane. The double-helix snake bone can move on the whole bending plane without direction deviation when the double-helix snake bone moves.

According to the endoscope, the double-spiral snake bone is bent around the joint, the joint on the first side of the hollow spiral tube structure and the joint on the second side of the spiral tube structure are arranged oppositely, and the connecting line between the two oppositely arranged joints is perpendicular to the turning surface of the double-spiral snake bone, so that the bending point of the double-spiral snake bone is perpendicular to the two-way snake bone moving plane. The double-spiral snake bone can move on the whole bending plane, and the direction deviation can not occur when the double-spiral snake bone moves, so that the position of the sensor can be controlled more accurately.

Drawings

FIG. 1 is a schematic structural diagram of a single helix structure according to an embodiment;

FIG. 2 is a schematic structural view of a single spiral snake bone according to an embodiment;

FIG. 3 is a schematic view of a double helix snake bone according to an embodiment;

FIG. 4 is another perspective structural view of the double spiral snake bone shown in FIG. 3;

FIG. 5 is a schematic structural view of a joint of a double spiral snake bone according to an embodiment;

FIG. 6 is a schematic view showing the structure of steel cord perforation of a double spiral snake bone according to an embodiment;

FIG. 7 is a cross-sectional view of one embodiment of a double helix snake bone;

FIG. 8 is a schematic view of the structure of a double-spiral snake bone with an adjustable bending radius according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The fixed connection in the present invention includes direct fixed connection and indirect fixed connection.

Referring to fig. 3 and 4, an embodiment of the double spiral snake bone comprises a first spiral body 10 and a second spiral body 20. The first spiral body 10 and the second spiral body 20 are synchronously and spirally formed in the same direction to form a hollow spiral pipe structure. The first screw 10 and the second screw 20 are arranged at intervals. The first spiral body 10 and the second spiral body 20 are connected through a plurality of joints 30. Referring to fig. 4, the plurality of joints 30 are respectively located on a first side 42 and a second side 44 of the hollow helical tube structure. The first side 42 and the second side 44 are oppositely disposed. The knuckle 30 on the first side 42 of the hollow coil structure is positioned opposite the knuckle 30 on the second side 44 of the coil structure. That is, the line connecting one joint 30 on the first side 42 and one joint 30 on the second side 44 disposed opposite to the joint 30 is perpendicular to the length direction of the vertically disposed double spiral snake bone.

The double spiral snake bone is bent around the joints 30, the joints 30 on the first side 42 of the hollow spiral pipe structure and the joints 30 on the second side 44 of the hollow spiral pipe structure are arranged oppositely, and the connecting line between the two oppositely arranged joints 30 is perpendicular to the turning surface of the double spiral snake bone, so that the bending point of the double spiral snake bone is perpendicular to the two-way snake bone moving plane. The double-helix snake bone can move on the whole bending plane without direction deviation when the double-helix snake bone moves.

Referring to fig. 3, in one embodiment, the first spiral 10 includes a first side line 12 and a second side line 14 disposed opposite to each other. A plurality of first sockets 32 are spaced apart from each other on the first side line 12, and a plurality of first joints 34 are spaced apart from each other on the second side line 14. The second spiral 20 is provided with a third side line 22 and a fourth side line 24 which are oppositely arranged. The third side line 22 is provided with a plurality of second sockets 36 at intervals, and the fourth side line 24 is provided with a plurality of second joints 38 at intervals. Referring also to fig. 5, the first joint head 34 mates with the second socket 36, the second joint head 38 mates with the first socket 32, the first joint head 34 is disposed within the second socket 36, and the first joint head 34 and the second socket 36 form a first joint. The second joint head 38 is disposed within the first socket 32, and the second joint head 38 and the first socket 32 form a second joint. The joint 30 includes a first joint and a second joint.

The joint is arranged at the edges of the first spiral body 10 and the second spiral body 20, so that the cross section area of the structure of the hollow spiral pipe is not increased, the size of the double-spiral snake bone is small, and the adaptability is strong.

For convenience of description, the first and second sockets 32, 36 are collectively referred to herein as sockets, and the first and second articular heads 34, 38 are collectively referred to herein as articular heads. The joint is designed into a structure with the joint head and the joint socket matched, and the structure is simple and compact.

In one embodiment, the first socket 32 has a circular arc shape, and the first joint 34 includes a first connecting member and a first joint, the first joint is fixed to the side line 14 on the second side 44 of the first screw 10 by the first connecting member, the first joint is a circle center, and the first joint is disposed in the second socket 36.

The second joint socket 36 is arc-shaped, and the second joint head 38 includes a second connector and a second connector, the second connector is fixed on the fourth side line 24 of the second spiral body 20 through the second connector, the second connector is a circle center, and the second connector is disposed in the first joint socket 32.

Further, the first socket 32 is preferably arcuate, and the second socket 36 is preferably arcuate.

For convenience of description, the first socket 32 and the second socket 36 are collectively referred to herein as sockets, the first joint head 34 and the second joint head 38 are collectively referred to as joint heads, and the first joint head and the second joint head are collectively referred to as joint heads. The joint socket is designed to be arc-shaped, the joint head is designed to comprise a first connecting piece and a first connecting head, and the structure is simple. In addition, the round connector is arranged in the arc-shaped joint socket to move flexibly, and the moving range is large.

The joint socket is designed into a preferred arc shape, and the joint socket can form a good surrounding effect on the connector, so that the round connector cannot be separated from the joint socket when rotating in the joint socket.

In one embodiment, referring to FIG. 4, the toroidal structure includes a third side 46 and a fourth side 48 disposed opposite one another. The third side 46 and the fourth side 48 are disposed on a centerline of a line connecting the first side 42 and the second side 44. Referring to fig. 7, a plurality of steel cord perforations 50 are linearly arranged on the third side 46 and the fourth side 48.

The wire through-holes 50 are used to pass the steel cord, and at the same time, can fix the steel cord in the wire through-holes 50 to prevent the wire from shifting when the steel cord is pulled.

By providing a steel cable on each of the third and fourth sides 46, 48 of the spiral tube structure, the cable can pull the double helix snake in a bending motion. Specifically, the double-spiral snake bone can be controlled to bend left and right or up and down by using the two steel wire ropes.

Further, referring to fig. 6, the first spiral body 10 is provided with a first open slot 11 and a second open slot 13 which are oppositely arranged, and a portion between the first open slot 11 and the second open slot 13 on the first spiral body 10 is recessed towards the inside of the hollow spiral tube structure to form a first steel rope perforation.

The second spiral body 20 is provided with a third open slot and a fourth open slot which are oppositely arranged, and the part between the third open slot and the fourth open slot on the second spiral body 20 is sunken towards the inside of the hollow spiral tube structure to form a second steel rope perforation.

The steel cord perforations comprise a first steel cord perforation and a second steel cord perforation.

The weight of the whole double spiral snake bone can be reduced by directly slotting the first spiral body 10 and the second spiral body 20 and forming the steel rope perforation in the inner concave, and the structure is simple.

Further, the first and second slots 11 and 13 are parallel to the first and second side lines 12 and 14, and the third and fourth slots are parallel to the third and fourth side lines 22 and 24.

In one embodiment, the width of the first screw 10 gradually changes along the length of the first screw 10.

The width of the second spiral body 20 gradually changes along the length direction of the second spiral body 20.

The width change ratio of the first screw 10 is the same as the width change ratio of the second screw 20.

The pitch between joints can be adjusted by gradually and synchronously changing the width of the first spiral body 10 and the width of the second spiral body 20, thereby achieving the aim of controlling the bending radius of the joints. It can be understood that the variation trend of the width of the first screw 10 and the width of the second screw 20 can be adjusted according to actual conditions.

Preferably, referring to fig. 8, along the length direction of the first spiral body 10, the width of the first spiral body 10 gradually becomes wider and then gradually becomes narrower. Along the length direction of the second spiral body 20, the width of the second spiral body 20 gradually becomes wider and then gradually becomes narrower. The width change ratio of the first screw 10 is the same as the width change ratio of the second screw 20. At this time, the double spiral snake bone has a small radius of curvature at both ends and a large radius of curvature at the center.

In one embodiment, the first side 42 and the second side 44 of the spiral tube structure are each provided with a plurality of steel cord perforations arranged in a straight line. A plurality of steel rope perforations arranged in a straight line are also arranged on the third side 46 and the fourth side.

At this time, a steel rope can be respectively penetrated through the four directions of the spiral pipe structure through the steel rope perforation. The four steel wire ropes can control the double-helix snake bone to deflect in four directions, namely up, down, left and right. Because the corresponding nodes are on a plane when the double-helix snake bone moves, the moving direction can be vertical to the plane, and the four-way movement of the double-helix snake bone is possible based on the premise.

In addition, still provide an endoscope, including sensor and double helix snake bone, the sensor is located the one end of double helix snake bone.

In the endoscope, the double spiral snake bone is bent around the joint 30, the joint 30 positioned on the first side 42 of the hollow spiral pipe structure and the joint 30 positioned on the second side 44 of the spiral pipe structure are oppositely arranged, and a connecting line between the two oppositely arranged joints 30 is vertical to the turning surface of the double spiral snake bone, so that the bending point of the double spiral snake bone is vertical to the moving plane of the double spiral snake bone. The double-spiral snake bone can move on the whole bending plane, and the direction deviation can not occur when the double-spiral snake bone moves, so that the position of the sensor can be controlled more accurately.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.