阅读说明：本技术 穿刺钳及其使用方法 (Puncture forceps and using method thereof ) 是由 李茂富 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种穿刺钳及其使用方法,包括：器身、与器身配接的钳杆和活动手柄；其中钳杆具有贯通轴向两端的中空的容纳腔,且在容纳腔中贯穿有适于相对于钳杆的轴向移动的钳体；以及钳杆远离器身的一端具有锥尖；钳体适于伸出在锥尖外的一端设有适于张开的一对钳翅。采用本发明的穿刺钳,可以采用一把器械同时完成通道的建立和组织的夹取。(The invention discloses a pair of puncture forceps and a using method thereof, wherein the puncture forceps comprise: the clamp comprises a body, a clamp rod matched and connected with the body and a movable handle; the clamp rod is provided with a hollow accommodating cavity which penetrates through two axial ends, and a clamp body which is suitable for moving relative to the axial direction of the clamp rod penetrates through the accommodating cavity; one end of the clamp rod, which is far away from the body, is provided with a conical tip; one end of the clamp body, which is suitable for extending out of the conical tip, is provided with a pair of clamp wings which are suitable for opening. The puncture forceps can be used for simultaneously completing the establishment of a channel and the clamping of tissues by one instrument.)

1. A pair of piercing pliers, comprising: the clamp comprises a body, a clamp rod matched and connected with the body and a movable handle; wherein

The clamp rod is provided with a hollow accommodating cavity which penetrates through two axial ends, and a clamp body which is suitable for moving relative to the axial direction of the clamp rod penetrates through the accommodating cavity; and

one end of the forceps rod, which is far away from the forceps body, is provided with a conical tip;

one end of the forceps body, which is suitable for extending out of the conical tip, is provided with a pair of forceps wings which are suitable for opening.

2. The piercing forceps of claim 1, wherein a pair of the forceps wings are integrally formed with the forceps body.

3. The puncture forceps of claim 1, wherein the forceps rod is further coupled with a forceps rod displacement driving structure;

the jaw bar axial displacement driving structure comprises:

a push rod adapted to push the jaw lever; one end of the push rod is provided with a shifting head used for pushing the clamp rod, and one end of the push rod, which is far away from the shifting head, is hinged and matched with the movable handle;

the spring body is sleeved on the clamp rod and is suitable for being compressed and deformed in the process that the push rod pushes the clamp rod;

the movable pin is fixed on the push rod; and

the locking piece is provided with locking teeth and locking openings which are suitable for being abutted and matched with the movable pins at intervals; wherein the locking teeth comprise a plurality of ratchet teeth which are arranged in series, and a tooth groove suitable for the movable pin to be embedded is formed between every two adjacent ratchet teeth.

4. The lancing forceps of claim 3, wherein the locking member includes a pair of symmetrically disposed locking tabs, and the locking teeth and locking ports are symmetrically disposed on each locking tab; and

the shifting head comprises a pair of symmetrically arranged shifting pieces so as to form a shifting opening which is matched with the clamp rod in a pushing manner between the pair of shifting pieces; and each plectrum is provided with the movable pin.

5. The pair of puncture forceps according to claim 4, wherein each locking plate is further provided with a prying plate integrally, and the prying plate and the locking plate are positioned on two sides of the second connecting pin shaft.

6. The pair of piercing pliers of claim 5 wherein the shaft translation drive structure further comprises a drive member rotatably engaged with the body and adapted to engage against the prying plate; and

the driving piece comprises a rod body with an oval-shaped cross section and an arc-shaped hook integrally connected with the axial side wall of the rod body;

the prying piece is provided with an opening suitable for the arc-shaped hook to be embedded;

the outer side of the device body is provided with a poking piece which is matched and connected with the rod body and is suitable for rotating the rod body.

7. The pair of piercing pliers of claim 1, wherein the lever is further coupled with a lever rotating structure;

the tong lever rotating structure comprises:

the rotating piece is sleeved on the clamp rod;

the synchronous ring comprises an annular base body fixedly connected with the rotating piece and a tooth-shaped part arranged on the circumferential edge of the annular base body;

an interference piece adapted to be in interference fit with the tooth; and

and the pushing piece is suitable for pushing the interference piece from one side end of the interference piece, which is far away from the tooth-shaped part, so that the interference piece is in interference fit with the tooth-shaped part.

8. The piercing forceps of claim 7, wherein the interference member includes a plate-like body and a nose integrally formed on the plate-like body and adapted to interference fit with a slot wall of the recess;

the rotating piece comprises a columnar base body sleeved on the clamp rod and a shifting button arranged on the outer side wall of the columnar base body; and

the synchronous ring is fixedly arranged on the outer side wall of the columnar base body;

the pushing piece comprises a pushing part suitable for pushing the interference piece and a connecting part integrally connected with the pushing part;

the end face of the pushing part facing the interference piece is an inclined face; wherein

The part of the inclined surface, which is close to the joint part, is suitable for pushing the interference piece; and

the portion of the inclined surface close to the joining portion is higher than the portion of the inclined surface far away from the joining portion.

9. The pair of piercing pliers of claim 8, wherein the engaging portion is connected to the movable handle, and the movable handle drives the pushing member to move synchronously during the movement relative to the body, so as to release the pushing or pushing between the inclined surface of the pushing portion and the interference member.

10. A method of using a piercing forceps, characterized in that the piercing forceps according to any of claims 1 to 9 are used; the method comprises the following steps:

step S1, completely folding the forceps body into the forceps rod, and puncturing the forceps rod into the human body to establish a minimally invasive surgery channel;

step S2, extending a pair of forceps wings out of the conical tip of the forceps rod, and gradually opening the forceps wings to clamp human tissues;

and step S3, after the pair of forceps wings clamp tissues, the pair of forceps wings of the forceps body are folded oppositely to clamp the human body component.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pair of puncture forceps and a using method thereof.

Background

In minimally invasive endoscopic surgery, a puncture outfit is used to establish a channel suitable for passing instruments such as, but not limited to, forceps, tweezers, etc., and then the instruments such as, but not limited to, forceps, tweezers, etc. are inserted into the channel to perform operations such as, but not limited to, clipping, cutting, or electric coagulation hemostasis on the tissue. This operation is relatively complicated on the one hand and also results in increased use costs of the instrument on the other hand.

Furthermore, in minimally invasive endoscopic surgery, a variety of instruments whose heads can be opened and closed are required, such as forceps, tweezers, and the like; the forceps comprise separating forceps, grasping forceps and the like. For the exemplary grasping forceps of the invention, the grasping forceps generally grasp and lift or fix tissues (such as lymph, blood vessels, lung tissues) through the grasping ends thereof, in the process of grasping the tissues by the grasping forceps, the grasping of the tissues is realized through opening and closing of the forceps heads, and in the case of opening and closing of the forceps heads, in an optional implementation situation, the opening and closing of the forceps heads can be realized through the axial movement of the forceps rods by the forceps rods sleeved outside the forceps heads, so that the structure is convenient and efficient to operate. Based on the above situation, a structure capable of driving the clamp rod to move axially needs to be used.

In the process of clamping tissues, the thicknesses of the tissues at different parts of a human body are different, so that the closing degree of the forceps heads of the same forceps is different, and in the process of closing the forceps heads by the axial movement of the forceps rods, the specific axial movement degree of the forceps rods is different, namely the movement end point positions of the forceps rods are different, so that a structure which can lock the axial movement end points of the forceps rods when the forceps rods clamp different tissues needs to be designed in the whole structure of the forceps, otherwise, a medical worker needs to pinch the handle by hands all the time, so that the operation of the hands of the medical worker is inconvenient, and the problem that the clamped tissues slip occurs due to improper operation of the medical worker also exists on the other hand.

In addition, during the process of clamping the tissue by the grasping forceps, the angle of the pair of forceps wings 52 of the grasping forceps relative to the tissue needs to be adjusted so as to achieve quick and accurate clamping. In the process, the purpose of rotating the forceps head can be achieved by rotating the handle part of the whole grasping forceps in an alternative mode, but in this mode, the handle is inconvenient to operate, and operation errors can be caused, because the handle is provided with a plurality of operating parts, and the rotating handle can affect the operation of the part. Therefore, the problems of the above-mentioned structure can be effectively avoided by designing the grasper such that the rotation of the forceps rod connected to the forceps head can be directly rotated to the purpose of the rotation of the forceps head, not by the rotation of the handle.

To the structure that can realize the binding clip is rotatory through the claw beam, under the state that the binding clip of nipper had got the tissue through the closure, to the condition that the claw beam can rotate this moment, be difficult to avoid appearing producing the problem that rotatory action and drag the tissue to the binding clip that has got the fixed tissue when medical personnel misoperation, or unconscious misoperation under the condition to cause the unexpected damage of tissue. That is, in the case of the structure in which the rotation of the jaw is achieved by the rotation of the jawset lever, it is necessary to prevent the occurrence of the situation in which the jawset lever is rotated in an unexpected situation.

Disclosure of Invention

The invention aims to provide a pair of puncture forceps to solve the technical problem of improving the versatility of the puncture forceps.

The second purpose of the invention is to provide a method for using the puncture forceps, so as to solve the technical problem of improving the versatility of the puncture forceps.

The puncture forceps of the invention are realized as follows:

a piercing forceps, comprising: the clamp comprises a body, a clamp rod matched and connected with the body and a movable handle; wherein

The clamp rod is provided with a hollow accommodating cavity which penetrates through two axial ends, and a clamp body which is suitable for moving relative to the axial direction of the clamp rod penetrates through the accommodating cavity; and

one end of the forceps rod, which is far away from the forceps body, is provided with a conical tip;

one end of the forceps body, which is suitable for extending out of the conical tip, is provided with a pair of forceps wings which are suitable for opening.

In an alternative embodiment of the invention, a pair of said clip wings is integrally formed with the clip body.

In an optional embodiment of the present invention, the forceps rod is further coupled with a forceps rod displacement driving structure;

the jaw bar axial displacement driving structure comprises:

a push rod adapted to push the jaw lever; one end of the push rod is provided with a shifting head used for pushing the clamp rod, and one end of the push rod, which is far away from the shifting head, is hinged and matched with the movable handle;

the spring body is sleeved on the clamp rod and is suitable for being compressed and deformed in the process that the push rod pushes the clamp rod;

the movable pin is fixed on the push rod; and

the locking piece is provided with locking teeth and locking openings which are suitable for being abutted and matched with the movable pins at intervals; wherein the locking teeth comprise a plurality of ratchet teeth which are arranged in series, and a tooth groove suitable for the movable pin to be embedded is formed between every two adjacent ratchet teeth.

In an alternative embodiment of the present invention, the locking member includes a pair of locking pieces symmetrically disposed, and the locking teeth and the locking openings are symmetrically disposed on each locking piece; and

the shifting head comprises a pair of symmetrically arranged shifting pieces so as to form a shifting opening which is matched with the clamp rod in a pushing manner between the pair of shifting pieces; and each plectrum is provided with the movable pin.

In an optional embodiment of the invention, each locking piece is further integrally provided with a prying piece, and the prying piece and the locking piece are located on two sides of the second connecting pin shaft.

In an optional embodiment of the present invention, the forceps rod axial movement driving structure further includes a driving member, which is disposed in the body and is in rotational fit with the body, and is adapted to be in abutting fit with the prying piece; and

the driving piece comprises a rod body with an oval-shaped cross section and an arc-shaped hook integrally connected with the axial side wall of the rod body;

the prying piece is provided with an opening suitable for the arc-shaped hook to be embedded;

the outer side of the device body is provided with a poking piece which is matched and connected with the rod body and is suitable for rotating the rod body.

In an optional embodiment of the invention, the clamp rod is further matched with a clamp rod rotating structure;

the tong lever rotating structure comprises:

the rotating piece is sleeved on the clamp rod;

the synchronous ring comprises an annular base body fixedly connected with the rotating piece and a tooth-shaped part arranged on the circumferential edge of the annular base body;

an interference piece adapted to be in interference fit with the tooth; and

and the pushing piece is suitable for pushing the interference piece from one side end of the interference piece, which is far away from the tooth-shaped part, so that the interference piece is in interference fit with the tooth-shaped part.

In an alternative embodiment of the present invention, the interference piece includes a plate-shaped body and a convex tip integrally formed on the plate-shaped body and adapted to be in interference fit with a groove wall of the groove;

the rotating piece comprises a columnar base body sleeved on the clamp rod and a shifting button arranged on the outer side wall of the columnar base body; and

the synchronous ring is fixedly arranged on the outer side wall of the columnar base body;

the pushing piece comprises a pushing part suitable for pushing the interference piece and a connecting part integrally connected with the pushing part;

the end face of the pushing part facing the interference piece is an inclined face; wherein

The part of the inclined surface, which is close to the joint part, is suitable for pushing the interference piece; and

the portion of the inclined surface close to the joining portion is higher than the portion of the inclined surface far away from the joining portion.

In an optional embodiment of the invention, the engaging part is connected with the movable handle, and the movable handle drives the pushing piece to move synchronously in the process of moving relative to the body so as to realize pushing or releasing of pushing between the inclined surface of the pushing part and the interference piece.

The use method of the puncture forceps is realized as follows:

the use method of the puncture forceps adopts the puncture forceps; the method comprises the following steps:

step S1, completely folding the forceps body into the forceps rod, and puncturing the forceps rod into the human body to establish a minimally invasive surgery channel;

step S2, extending a pair of forceps wings out of the conical tip of the forceps rod, and gradually opening the forceps wings to clamp human tissues;

and step S3, after the pair of forceps wings clamp tissues, the pair of forceps wings of the forceps body are folded oppositely to clamp the human body component.

By adopting the technical scheme, the invention has the following beneficial effects: the puncture forceps and the use method thereof have the advantages that the forceps body which is arranged in the forceps rod and is suitable for moving axially relative to the forceps rod is matched with the conical tip arranged at one end, away from the device body, of the forceps rod, and the pair of forceps wings which are suitable for opening are arranged at one end, extending out of the conical tip, of the forceps body, so that when the forceps body of the puncture forceps is completely folded into the forceps rod, the forceps rod and the conical tip can be used as a puncture outfit to puncture a human body to establish a minimally invasive operation channel; after the puncture is finished, the pair of forceps wings of the forceps body extend out of the conical tip, so that the tissue can be clamped through the pair of forceps wings. The puncture forceps can be used for percutaneous puncture in the operation process to automatically establish a channel of a tiny wound without additionally using a conventional puncture outfit, namely, the channel establishment and the tissue clamping can be simultaneously completed by one instrument, and the effect of killing two birds with one stone is achieved. Therefore, the puncture forceps have the advantages of small wound in the operation process and quick recovery of a patient after operation, and can reduce the operation cost and improve the operation efficiency.

Furthermore, through the rotating member and the synchronizer ring which are fixedly connected with the forceps body, the rotating member can drive the forceps rod to rotate, the synchronizer ring synchronously rotates in the rotating process of the forceps rod, on the basis, the interference member is used for forming interference to the synchronizer ring in the rotating process of the forceps rod, so that the interference member causes certain resistance to the rotation of the forceps rod, and the forceps rod can rotate only by a certain rotating force when the forceps rod is to be rotated, thereby avoiding the unexpected operation error of the hands of medical workers and causing the unexpected rotation problem of the forceps rod.

Furthermore, through the ejector sleeve, the interference piece can generate an interference effect with the synchronizing ring only under the condition that the interference piece is pushed by the ejector sleeve, and therefore when the clamp rod needs to be rotated, the rotation of the clamp rod cannot be affected by the interference piece. Thus, for the medical device of the present invention, the jaw lever can rotate smoothly when rotation is desired, and is less likely to undergo unintended rotation when rotation is not desired.

Still further, the forceps lever axial movement driving structure adopted by the invention comprises a push rod, a movable pin arranged on the push rod and a locking piece suitable for being matched with the movable pin, wherein the push rod is connected with a movable handle, so that when medical personnel pinches the movable handle to drive the axial movement of the forceps lever by the push rod, the movable pin on the push rod can realize the locking effect on the movement end point of the forceps lever through the matching of the locking tooth and the locking port on the locking piece.

Finally, the invention realizes the locking fit of the axial movement terminal point when the forceps rod is adapted to clamp tissues with different thicknesses through the plurality of ratchet teeth included in the locking teeth and the tooth sockets existing between every two adjacent ratchet teeth, thereby improving the applicability of the overall medical instrument of the invention to the tissues with different thicknesses. And the movable pin is required to collide with the ratchet teeth in the process of matching with different tooth grooves, so that corresponding prompt tones can be generated in the process of collision of the movable pin and the ratchet teeth, and medical personnel can know the rotation progress of the push rod conveniently, namely, the rotation of the movable handle relative to the body is mastered in real time.

Drawings

FIG. 1 is a schematic view of the overall structure of a piercing forceps according to an embodiment of the present invention;

FIG. 2 is a first view of a partial structure of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 3 is a schematic view of a second partial structure of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 4 is a schematic view of a third partial structure of a piercing forceps according to an embodiment of the present invention;

FIG. 5 is a fourth schematic view of a partial structure of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 6 is a schematic view of a partial structure of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 7 is a sixth schematic view of a portion of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 8 is a seventh schematic view of a partial structure of a piercing forceps according to an embodiment of the present invention;

FIG. 9 is a schematic view showing a partial structure of a piercing forceps according to an embodiment of the present invention;

FIG. 10 is a schematic view showing a partial structure of a pair of piercing pliers according to an embodiment of the present invention;

FIG. 11 is a schematic view showing a partial structure of a piercing forceps according to an embodiment of the present invention;

FIG. 12 is a schematic view of the interior of the body of the lancing forceps for use in lancing in accordance with the present invention;

FIG. 13 is a schematic view of a pair of lancing forceps according to an embodiment of the present invention, in which the movable pin and the locking tooth do not interfere with each other when the wings of the forceps are in an open state;

FIG. 14 is a schematic view of a pair of piercing pliers according to an embodiment of the present invention, showing the movable pin and the locking tooth not interfering with each other, in a state where the piercing pliers are engaged with the forceps wings as the forceps to hold a tissue;

FIG. 15 is a schematic view of a lancing forceps according to an embodiment of the present invention, showing interference between a movable pin and a locking tooth when a forceps wing as the forceps is in an opened state;

fig. 16 is a schematic view of a puncture forceps according to an embodiment of the present invention, in which a movable pin and a lock tooth interfere with each other in a state where a tissue is grasped by forceps wings as forceps.

In the figure: the clamp comprises a clamp rod 1, a columnar base body 2, a shifting button 3, an annular base body 4, a bevel gear 5, a groove 6, a plate-shaped body 7, a convex tip 8, a pushing part 9, a connecting part 10, a device body 11, a movable handle 12, a connecting column 13, a connecting ring 14, a waist-shaped groove 15, an assembling groove 16, a matching groove 17, a push rod 21, a first connecting pin shaft 22, a shifting piece 23, a shifting opening 25, a movable pin 26, an annular wing 27, a connecting piece 28, an arc-shaped indicating piece 29, a locking piece 30, a locking opening 31, a second connecting pin shaft 32, a hollow opening 33, a connecting piece 34, a prying piece 35, a ratchet 36, a tooth groove 37, a rod body 39, an arc-shaped hook 40, a shifting piece 41, a shifting rod 42, a waist-shaped movable groove 43, a shifting block 45, an opening 47, an initial groove 48, a clamp body 50, a bevel tip 51, a clamp wing 52 and a spring body 55.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Example 1:

referring to fig. 1 to 16, the present embodiment provides a pair of piercing pliers, including: the device comprises a device body 11, a clamp rod 1 matched and connected with the device body 11 and a movable handle 12; the movable handle 12 is rotatably coupled to the body 11 through a rotating shaft, so that the movable handle 12 can rotate relative to the body 11 under the pinching action of the hand of the medical care personnel. The clamp rod 1 has a hollow accommodating cavity penetrating through two ends in the axial direction, and a clamp body 50 suitable for moving relative to the clamp rod 1 in the axial direction penetrates through the accommodating cavity; and one end of the forceps rod 1 far away from the device body 11 is provided with a conical tip 51; the end of the body 50 adapted to extend beyond the tapered tip 51 is provided with a pair of forceps wings 52 adapted to open.

In consideration of the convenience of processing and the smoothness of use, the pair of caliper fins 52 of the present embodiment is integrally formed with the caliper body 50.

It should be noted that, in an alternative embodiment, a foolproof design is adopted between the forceps body 50 and the accommodating cavity of the forceps rod 1, and the foolproof design adopts, for example but not limited to, a matched limit groove and a matched protrusion (here, a limit groove can be provided on the outer side wall of the forceps body, and a protrusion matched with the limit groove is provided on the inner side wall of the forceps rod) to realize the stability of the radial position of the forceps body 50 on the forceps rod 1, and in such a foolproof design, when the pair of forceps wings 52 is in an opened state, the tapered tip 51 is positioned beside one of the forceps wings 52, and when the pair of forceps wings 52 is in an opened state, the tapered tip 51 can abut against the outer side wall of one of the forceps wings 52. Such a configuration can prevent the tapered tip 51 from damaging tissue when a pair of forceps fins 52 are used to grasp tissue. And under the foolproof design, the clamp body 50 can be synchronously rotated by rotating the clamp rod 1, so that the relative rotation motion between the clamp body 50 and the clamp rod 1 is avoided.

On the basis of the structure, the puncture forceps further comprise a forceps rod rotating structure matched and connected with the forceps rod 1. Specifically, the caliper bar rotating structure of the present embodiment includes: the rotary part is sleeved on the forceps rod 1 fixed on the medical apparatus, the synchronizing ring is connected with the rotary part, the interference part can form interference fit with the synchronizing ring, and the pushing part can be used for pushing the interference part.

In detail, first, the rotating member:

the rotating piece comprises a columnar base body 2 sleeved on the clamp rod 1 and a shifting button 3 arranged on the outer side wall of the columnar base body 2; the cylindrical base body 2 forms a fastening fit with the clamp rod 1, and a fixed fit between the two can be achieved by adopting a mode such as but not limited to interference fit, so that the rotation of the rotating piece can drive the synchronous rotation of the clamp rod 1. The dial button 3 is integrally or separately fixed on the columnar base body 2, and the dial button 3 is arranged at the position so as to be convenient for hands of medical staff to apply rotating acting force to the rotating piece.

Second, the synchronizer ring:

the synchronous ring comprises an annular base body 4 fixedly connected with the rotating piece and a tooth-shaped part arranged on the circumferential edge of the annular base body 4; the annular base body 4 is fixedly connected with the cylindrical base body 2 of the rotating piece, so that the synchronous ring and the rotating piece can generate the same motion process, namely the synchronous ring can be driven to synchronously rotate in the rotating process of the rotating piece. The annular base 4 and the cylindrical base 2 of the rotating element may be formed by, for example, but not limited to, interference fit or integral molding.

The tooth-shaped portion adopted in the present embodiment includes a plurality of conical teeth 5 distributed continuously, and a groove 6 is formed between every two adjacent conical teeth 5. The tooth-shaped part is integrally formed on the circumferential edge of the annular base body 4, namely the tooth-shaped part and the annular base body 4 form an integral structure, so that when the annular base body 4 rotates along with the clamp rod 1, the tooth-shaped part also moves synchronously.

Furthermore, the interference piece:

an interference piece adapted to be in interference fit with the tooth; the interference piece comprises a plate-like body 7 and a nose 8 integrally formed on the plate-like body 7 and adapted to be in interference fit with the groove wall of the groove 6. The plate-shaped body 7 and the protruding tip 8 are integrally formed, and in an alternative embodiment, the interference member of the present embodiment is made of a metal material, so that the protruding tip 8 can be formed by directly bending the plate-shaped body 7.

It should be noted that the tooth portion includes a groove 6 having a V-shaped cross section, and the tip 8 may alternatively be a V-shaped structure. It should be noted that the V-shaped clip angle corresponding to the protrusion 8 is smaller than the V-shaped clip angle corresponding to the groove 6, and the length of the side walls on both sides of the V-shaped clip angle corresponding to the protrusion 8 is smaller than the length of the groove walls on both sides of the V-shaped clip angle corresponding to the groove 6, so that the design is significant in that the interference piece forms an interference fit relationship by the fit of the protrusion 8 and the groove 6, but the protrusion 8 does not completely fill the whole groove 6, so as to avoid that the resistance of the tooth-shaped portion in the rotating process along with the annular base 4 is too large after the protrusion 8 completely fills the groove 6.

Under the interference fit of the convex tip 8 and the groove 6, when the synchronous ring rotates synchronously along with the rotating piece, each bevel tooth 5 can give out prompt sound due to collision with the convex tip 8 in the process of rotating along with the tooth-shaped part, so that the rotation condition of the rotating piece is prompted to medical staff.

Finally, the ejector:

and the pushing piece is suitable for pushing the interference piece from one side end of the interference piece, which is far away from the tooth-shaped part, so that the interference piece is in interference fit with the tooth-shaped part. In detail, the pushing member includes a pushing portion 9 adapted to push the interference member and an engaging portion 10 integrally connected to the pushing portion 9. That is to say, the interference member needs to generate an interference fit effect with the tooth-shaped portion under the pushing action of the pushing member, and in such a case, when the clamping bar 1 needs to be rotated, the rotation of the clamping bar 1 is not affected by the interference member. In other words, the clamp lever 1 can rotate smoothly when rotation is required, and is not prone to unintended rotation when rotation is not required.

The pushing action between the pushing piece and the interference piece is realized by the following structure in an alternative implementation case in combination with the attached drawings:

specifically, the end surface of the pushing part 9 facing the interference piece is an inclined surface; wherein the part of the inclined surface close to the joint part 10 is suitable for pushing the interference piece; and a portion of the inclined surface close to the joining portion 10 is higher than a portion of the inclined surface far from the joining portion 10. In this case, the inclined surface of the pushing portion 9 does not entirely push the interference member, and only the portion of the inclined surface close to the engaging portion 10 can generate the pushing effect on the interference member. Based on this, only need through the removal of ejecting piece can realize the different cooperation effect of different positions and interference piece on the inclined plane of ejecting portion 9, the position that is close to linking portion 10 on the concrete inclined plane pushes away the interference piece, and the position that is far away from linking portion 10 on the inclined plane is the top that can't produce the effect to the interference piece.

On the basis of the structure, the moving process of the pushing piece is realized by the following steps: the joining part 10 is connected with a movable handle 12 of the medical apparatus, and the movable handle 12 drives the pushing piece to move synchronously in the process of moving relative to a body 11 of the medical apparatus so as to realize pushing or pushing release between the inclined surface of the pushing part 9 and the interference piece; specifically, the pushing member is moved during the rotation of the movable handle 12 relative to the body 11 of the medical device.

On the basis of the structure, in order to coordinate the conversion driving between the motion trail of the connecting part 10 and the motion trail of the pushing part, namely, the driving action on the moving trail of the pushing part is generated in the process of the rotation motion of the movable handle 12. In the embodiment, the pushing member realizes the pushing effect on the interference member through a linear motion process, and the rotation motion of the movable handle 12 is not a linear motion track, so the embodiment also designs the following structure: a connecting column 13 is arranged on the connecting part 10; and the movable handle 12 is provided with a connecting ring 14 matched with the connecting part 10; the connecting ring 14 is provided with a waist-shaped groove 15 which is in sleeve fit with the connecting column 13, that is, in the process that the connecting ring 14 rotates relative to the body 11 of the medical instrument along with the movable handle 12, the waist-shaped groove 15 can be converted into a driving effect on the linear motion of the pushing piece.

In addition, a fitting groove 16 for fitting and accommodating the interference piece and a fitting groove 17 for accommodating the limit pushing piece are formed in the body 11; and the fitting groove 16 and the fitting groove 17 intersect perpendicularly; it should be noted that the intersection between the assembling groove 16 and the fitting groove 17 is the communication point of the two grooves, that is, the pushing and fitting effect of the pushing member on the interference member is formed at the above-mentioned intersection.

On the basis of the structure, the interference piece is limited through the assembling groove 16, so that the interference piece only can generate a motion track towards the direction of the tooth-shaped part under the action of the pushing piece, and the pushing effect of the pushing piece on the interference piece is accurately realized. Similarly, the limit of the pushing part is realized through the matching groove 17, so that the pushing part only generates a linear motion track along the matching groove 17 under the action of the waist-shaped groove 15 of the connecting ring 14 in the process that the movable handle 12 rotates relative to the body 11 of the medical device, and different matching effects of different parts on the inclined surface of the pushing part and the interference part are accurately realized in the linear motion process of the pushing part.

In summary, the specific implementation principle of the rotating structure of the clamp lever of the present embodiment is as follows:

when the medical staff pinches the movable handle 12 by hand, the movable handle 12 rotates relative to the body 11 of the medical apparatus, the connecting ring 14 of the movable handle 12 drives the pushing member to move linearly, so that different matching effects between different parts of the pushing member facing the inclined surface of the interference member and the interference member are realized in the linear movement process of the pushing member. Specifically, along with the linear motion of the pushing member, when the part of the inclined surface close to the joining part 10 is in pushing contact with the interference member, the pushing member pushes the interference member, so that the interference member is in interference fit with the tooth-shaped part of the synchronizing ring; when the portion of the inclined surface away from the engaging portion 10 does not produce a pushing effect on the interference member, the interference member does not produce an interference fit with the tooth portion of the synchronizer ring.

Example 2:

referring to fig. 7 to 12, on the basis of the puncturing forceps of embodiment 1, the puncturing forceps of this embodiment further includes a forceps rod axial movement driving structure coupled to the forceps rod 1, including: the clamp comprises a push rod 21, a movable pin 26 arranged on the push rod 21, a locking piece suitable for being matched with the movable pin 26, and a spring body 55 sleeved on the clamp rod 1.

Next, first, the push rod 21:

a push rod 21 adapted to push the jaw lever 1 of the medical instrument; one end of the push rod 21 is provided with a shifting head for pushing the clamp rod 1, and one end of the push rod 21 far away from the shifting head is in hinged fit with the movable handle 12 of the medical instrument. The push rod 21 is rotatably coupled to the body 11 via the first connecting pin 22, that is, during the rotation of the movable handle 12 relative to the body 11 of the medical device, a driving action on the push rod 21 can be generated, so that the push rod 21 can generate a pushing action on the forceps rod 1 around the first connecting pin 22.

By way of example of an optional implementation case with reference to the accompanying drawings, the shifting block adopted in the present embodiment includes a pair of symmetrically arranged shifting pieces 23, so as to form a shifting opening 25 between the pair of shifting pieces 23, which is in pushing fit with the forceps rod 1; and a movable pin 26 is provided on each of the picks 23, i.e. the movable pin 26 will move synchronously with the movement of the push rod 21.

In view of the effective fit between the forceps rod 1 and the poke opening 25, the present embodiment is provided with an annular wing 27 adapted to be in abutting fit with the poke opening 25 at the portion of the forceps rod 1 placed in the body 11 of the medical device, i.e. the force application point of the poke opening 25 is formed by the annular wing 27.

It should also be noted that the movable handle 12 is pivotally engaged with the end of the push rod 21 remote from the pick by means of an engagement tab 28. Here, one end of the engagement piece 28 is rotatably engaged with the movable handle 12, and the other end of the engagement piece 28 is rotatably engaged with the push rod 21.

Second, the spring body 55:

the spring body 55 of the present embodiment is sleeved on the clamp rod 1 and is suitable for being compressed and deformed in the process that the push rod 21 pushes the clamp rod 1; one end of a specific spring body 55 is abutted with one end of the annular wing 27 departing from the dial opening 25, and the other end of the spring body 55 is abutted with one end of the synchronizing ring departing from the dial button 3; when the clamp lever 1 is axially moved by the push rod 21 to close the pair of clamp fins 52, the spring body 55 is gradually compressed and deformed. While the spring body 55 is gradually restored during the gradual opening of the pair of clamping wings 52.

Furthermore, the locking member:

the locking piece is provided with locking teeth and locking openings 31 which are suitable for being abutted and matched with the movable pins 26 at intervals; wherein the locking teeth comprise a plurality of ratchet teeth 36 arranged in series and a tooth slot 37 adapted to receive the movable pin 26 is formed between each adjacent two of the ratchet teeth 36.

It should be noted that the locking opening 31 and the plurality of ratchet teeth 36 are distributed in a common circular arc, and the design is such that the movable pin 26 performs a synchronous rotational movement with the push rod 21 during the rotational movement of the push rod 21 around the first connecting pin 22, so that the movable pin 26 can selectively cooperate with the plurality of ratchet teeth 36 and the locking opening 31 during the rotational movement of the push rod 21 by the locking opening 31 and the plurality of ratchet teeth 36 distributed on the same circular arc structure.

In addition to the above-described structure, it should be noted that, in the case where the lock teeth contact the movable pin 26 prior to the lock notch 31 in the process of the rotational movement of the movable pin 26 along with the push rod 21, that is, the axial movement distance of the corresponding caliper bar 1 when the movable pin 26 is engaged with the lock notch 31 is longer than the axial movement distance of the corresponding caliper bar 1 when the movable pin 26 is engaged with any one of the tooth grooves 37 of the lock teeth. When the movable pin 26 is engaged with the locking opening 31, the maximum axial movement of the clamping lever 1 is reached, and the pair of clamping wings 52 can be completely retracted into the clamping lever 1. And when the movable pin 26 is engaged with either of the tooth grooves 37 of the locking teeth, the pair of forceps wings 52 at this time can form a grip for tissues of different thicknesses.

In order to facilitate the medical staff to grasp the condition that the pair of forceps fins 52 are completely folded into the forceps rod 1, the push rod 21 of this embodiment is further connected with an arc-shaped indicating sheet 29 adapted to extend to the outside of the body 11, and when the movable pin 26 is engaged with the locking opening 31, one end of the arc-shaped indicating sheet 29 extends to the outside of the body 11.

By way of example of an alternative implementation case in conjunction with the attached drawings, the locking member adopted by the embodiment includes a pair of locking pieces 30 which are symmetrically arranged, and locking teeth and locking openings 31 are symmetrically arranged on each locking piece 30; each locking piece 30 is rotatably coupled to the body 11 by a second connecting pin 32. The tooth slot 37 should be noted that a hollowed-out opening 33 suitable for the movable pin 26 to pass through is formed on the locking plate 30, so that the movable pin 26 can pass through the hollowed-out opening 33 and then be in contact with the locking teeth and the locking opening 31.

Of course, the pair of locking pieces 30 realize the coupling effect of the pair of locking pieces 30 by the coupling piece 34 in consideration of the firm engagement between the pair of locking pieces 30 so that the engagement effect of the pair of locking pieces 30 with the push rod 21 is kept synchronized.

On the basis of the above structure, each locking piece 30 of this embodiment is further integrally provided with a prying piece 35, and the prying piece 35 and the locking piece 30 are located on two sides of the second connecting pin shaft 32. With the design structure, the prying piece 35 and the locking piece 30 can be mutually arranged around the seesaw structure of the second connecting pin shaft 32, namely when the prying piece 35 is propped against the bottom end of the prying piece 35, the locking piece 30 is relatively pressed downwards; and when the pry piece 35 is pulled down from the bottom end thereof, the locking piece 30 is lifted relatively upward. In this way, the effect of the engagement of the locking teeth and locking openings 31 with the movable bolt 26 is achieved by the downward depression and upward lifting of the locking plate 30 relative to the second connecting pin 32, in particular, when the locking plate 30 is depressed relatively downward, the movable bolt 26 can only enter the tooth gaps 37 of the locking teeth and the locking openings 31, so that the locking teeth and the locking openings 31 can form a locking effect for the movable bolt 26. When the locking plate 30 is lifted up relatively, the movable pin 26 cannot enter the tooth slot 37 of the locking tooth and the locking port 31, so that the locking tooth and the locking port 31 cannot form a locking effect on the movable pin 26, and then the movable pin 26 can move smoothly in the hollow-out port 33 of the locking plate 30.

In further detail, in view of facilitating the medical staff to control the prying piece 35 from the outside of the body 11, the present embodiment is provided with the following structure:

a driving piece which is in running fit with the device body 11 and is suitable for being propped against and matched with the prying piece 35 is arranged in the device body 11; the driving part comprises a rod body 39 with an oval section and an arc-shaped hook 40 integrally connected with the axial side wall of the rod body 39; and the arc-shaped hook 40 is connected with the small inner diameter side end of the rod body 39 corresponding to the oval shape. The prying plate 35 is provided with an opening 47 suitable for the arc-shaped hook 40 to be embedded in; a poking piece 41 which is matched and connected with the rod body 39 and is suitable for rotating the rod body 39 is arranged on the outer side of the instrument body 11. Here, the medical staff can toggle the toggle member 41 of this embodiment by hand to realize the rotation of the lever body 39, and since the lever body 39 is in an elliptical shape, in the rotation process of the lever body 39, when the prying piece 35 abuts against the large inner diameter side end of the lever body 39, the prying piece 35 is lifted up relative to the second connecting pin shaft 32, and the corresponding locking piece 30 is pressed downward relatively; when the curved hook 40 is engaged with the opening 47 of the pry plate 35, the pry plate 35 is pressed downward relative to the second connecting pin 32, and the corresponding lock plate 30 is lifted upward.

In addition to the above-mentioned structure, it should be noted that, although the lever 39 and the side wall of the body 11 are in a pivot-fit relationship in the present embodiment, the lever is not a structure that can rotate freely without being subjected to a force, that is, the lever 39 needs to be rotated with respect to the side wall of the body 11 by applying a toggle force to the toggle member 41 by a hand, and in such a structure, when the lever 39 is rotated by the toggle member 41, the hand does not need to apply a force to the toggle member 41 at all times, but can be released to facilitate other operations after the toggle member 41 is rotated to a certain position.

In summary, the forceps lever axial movement driving structure of the present embodiment utilizes the cooperation of the push rod 21, the movable pin 26 disposed on the push rod 21 and the locking member adapted to cooperate with the movable pin 26, so that during the driving process of the medical staff for the axial movement of the push rod 21 relative to the forceps lever 1 by pinching the movable handle 12, the movable pin 26 on the push rod 21 can implement the locking effect on the axial movement end point of the forceps lever 1 by cooperating with the locking tooth and the locking opening 31 on the locking member. And the locking fit of the axial movement terminal point when the forceps rod 1 is adapted to tissues with different thicknesses to clamp is realized through a plurality of ratchet teeth 36 included by the locking teeth and the toothed slot 37 existing between every two adjacent ratchet teeth 36, so that the applicability of the integral medical instrument of the invention to the tissues with different thicknesses is improved.

Example 3:

referring to fig. 7 to 12, on the basis of the puncturing forceps of embodiment 2, the axial movement driving structure of the forceps rod of the puncturing forceps of this embodiment further includes a shift lever 42 respectively connected to a side end face of each locking piece 30 away from the forceps rod 1; a waist-shaped movable groove 43 suitable for the deflector rod 42 to pass through is arranged on the side wall of the device body 11; and a shifting block 45 is sleeved at one end of the shifting rod 42 extending out of the waist-shaped movable groove 43. The toggle block 45 is disposed to facilitate a toggle force applied to the toggle lever 42 by a hand of a medical worker.

Since the locking teeth contact the movable pin 26 before the locking notch 31 during the rotational movement of the movable pin 26 with the push rod 21, i.e. the rotation range of the locking notch 31 with respect to the corresponding movable pin 26 is larger than the rotation range of the locking teeth, and the special case that the pair of tong fins 52 are completely gathered in the tong lever 1 corresponds to the locking notch 31, the locking opening 31 and the locking teeth of the present embodiment have a certain arc-shaped distance therebetween, and at this time, in consideration of reducing the resistance of the locking piece 30 to the rotation process of the movable pin 26 in the process of moving the movable pin 26 from the locking teeth to the locking opening 31, the present embodiment is provided with the shift lever 42, and the waist-shaped movable groove 43 combined on the side wall of the body 11 can make the locking piece 30 generate a certain movement in the body 11 by shifting the shift lever 42, so that the movable pin 26 can smoothly move from the locking teeth to the locking opening 31. Similarly, when the movable pin 26 needs to leave the locking opening 31, the dial 45 can be manually shifted to make the locking piece 30 move in the body 11 to facilitate the movable pin 26 to leave the locking opening 31.

Example 4:

referring to fig. 1 to 16, on the basis of the piercing forceps of embodiment 3, the present embodiment provides a method for using the piercing forceps, which includes the following steps:

step S1, completely folding the forceps body 50 into the forceps rod 1, and puncturing the forceps rod 1 into the human body to establish a minimally invasive surgery channel;

step S2, extending the pair of forceps wings 52 of the forceps body 50 out of the conical tip 51 of the forceps rod 1, and gradually opening the pair of forceps wings 52 to clamp the human tissue;

in step S3, after the pair of forceps wings 52 clamp the tissue, the pair of forceps wings 52 of the forceps body 50 are folded towards each other to clamp the human body component.

Furthermore, the puncture forceps of the invention can have two functions of puncture and sampling, can adopt one instrument to complete two functions of channel establishment and tissue clamping at the same time, and particularly has the following modes in the use state in the process of minimally invasive surgery:

the first method comprises the following steps: when the puncture forceps of the embodiment is used for puncture to establish a passage, the medical staff pinches the movable handle 12 by hands, the movable handle 12 moves to the side far away from the forceps wings 52, so that the movable handle 12 drives the push rod 21 to rotate around the first connecting pin 22 towards the direction of the tong fins 52, in the process, the push rod 21 will push the forceps rod 1 to move away from the movable handle 12 so that the pair of forceps wings 52 of the forceps body 50 do the opposite furling motion to gradually furl into the forceps rod 1, meanwhile, when the movable pin 26 on the push rod 21 passes through the locking teeth and finally is clamped with the locking port 31, one end of the arc-shaped indicating sheet 29 extends out of the forceps body 11, and then the medical staff is prompted that the pair of forceps wings 52 of the forceps body 50 are completely folded into the forceps rod 1, the tapered tip 51 of the jawarm 1, remote from the movable handle 12, is exposed for use in puncturing.

It should be noted that, in the above process, during the rotation of the push rod 21 around the first connecting pin 22 under the driving of the movable handle 12, when the movable pin 26 passes through the locking tooth region, in an optional case, the toggle member 41 can be toggled by a hand to make the arc-shaped hook 40 be engaged with the opening 47, that is, the prying plate 35 is pressed downward relative to the second connecting pin 32, so that the locking plate 30 is lifted upward relative to the second connecting pin 32, so that the locking tooth does not interfere with the movable pin 26, and the speed of the movable pin 26 passing through the locking tooth region is increased. Of course, in an alternative case, the medical staff uses the hand to toggle the toggle piece 41 to disengage the arc-shaped hook 40 from the opening 47, and the toggle piece 35 abuts against the large inner diameter side end of the rod body 39, so that the toggle piece 35 is lifted relative to the second connecting pin shaft 32, the corresponding locking piece 30 is pressed downward relatively, so that the locking tooth will interfere with the movement of the movable pin 26, and thus, the movable pin 26 will collide with the ratchet 36 continuously during the rotation movement of the push rod 21, and when the movable pin 26 moves to the tooth groove 37 of the corresponding locking tooth, which is next to the locking opening 31, the medical staff uses the hand to toggle the toggle piece 45 to make the locking piece 30 move upward relative to the movable pin 26 by a small amplitude, so as to accelerate the movable pin 26 to be locked at the locking opening 31 by rotating along with the push rod 21 from the position of the corresponding locking tooth, in this case, the pair of clamping fins 52 of the clamp body 50 is completely retracted into the clamp rod 1, and the spring body 55 is also in this case deformed to the maximum extent.

Based on the above situation, the pushing member connected to the movable handle 12 can generate a pushing action on the interference member, so that the interference member can generate an interference fit effect with the tooth-shaped portion of the synchronizing ring, thereby preventing the rotating member coupled to the forceps rod 1 from generating an unexpected rotation behavior, and also preventing the forceps rod 1 from generating an unexpected rotation motion, so as to prevent the occurrence of accidental injury to human tissues due to unexpected rotation of the conical tip 51 of the forceps rod 1 far from the movable handle 12 in a human body.

And the second method comprises the following steps: after the puncturing is completed, for the puncturing forceps of this embodiment that has been inserted into the human body, the medical staff further uses the hand to dial the dial block 45 to make the locking plate 30 move upward with a small amplitude relative to the movable pin 26, so as to make the locking port 31 release the locking effect on the movable pin 26, at this time, there is no structure for the movable pin 26 to limit its free movement in the hollow-out port 33 of the locking plate 30, the movable pin 26 gradually returns to the state before puncturing under the returning action force of the spring body 55 along with the push rod 21, that is, the movable pin 26 moves to the initial position outside the tooth socket 37 farthest from the locking port 31 in the corresponding locking tooth along with the push rod 21, it should be noted that, an initial slot 48 that is engaged with the movable pin 26 may be provided at the initial position, here, because the arc-shaped hook 40 and the opening 47 are still in the engaged state, that is, that the movable pin 26 does not get stuck into the initial slot 48, but outside the notch of the initial groove 48. At this time, the pair of forceps wings 52 of the forceps body 50 is opened to the maximum, so that the tissue of the human body can be grasped at any time.

Based on the above situation, the pushing member connected to the movable handle 12 cannot generate a pushing action on the interference member, so that the interference member cannot generate an interference fit effect with the tooth-shaped portion of the synchronizing ring, and thus the rotating member coupled to the forceps lever 1 can smoothly generate a required rotation behavior, so that the pair of forceps wings 52 of the forceps body 50 can adjust an angle to the human tissue, and the human tissue can be rapidly clamped.

And the third is that: after the pair of forceps fins 52 is adjusted to the grasping angle of the human tissue, the tissue is then grasped by the pair of forceps fins 52 being folded toward each other. In this need, there may be two operating means:

one means is that on the basis of the second condition, the movable pin 26 is located outside the notch of the initial slot 48, and the movable handle 12 is directly pinched by the hand, the movable handle 12 moves towards the side away from the forceps fins 52, so that the movable handle 12 drives the push rod 21 to make a rotational movement around the first connecting pin towards the forceps fins 52, in the process, the push rod 21 will push the forceps rod 1 to move towards the direction away from the movable handle 12, so that the pair of forceps fins 52 of the forceps body 50 makes a closing movement towards each other, and the spring body 55 is also gradually compressed and deformed under the condition. And here because the curved hook 40 still keeps the joint state with the opening 47, that is, the prying piece 35 at this time is pressed downward relative to the second connecting pin shaft 32, so that the locking piece 30 is lifted upward relative to the second connecting pin shaft 32, and thus the locking tooth does not interfere with the movable pin 26, and the smoothness of the movement of the movable pin 26 in the hollow-out opening 33 of the locking piece 30 is improved, that is, the clamping speed of the pair of forceps fins 52 on the tissue is rapidly realized. After the tissue is clamped by the pair of clamp wings 52, the hands of the medical staff keep the pinching state of the movable handle 12 to keep the effective clamping state of the tissue, so as to avoid the problem of tissue falling. At this time, when the tissue grasped by the forceps wings 52 needs to be released, the pinching force on the movable handle 12 needs to be released only by the hand.

Another means is that, on the basis of the second condition, the initially movable pin 26 is located outside the notch of the initial slot 48, the medical staff disengages the curved hook 40 from the opening 47 by manually toggling the toggle piece 41, and the prying piece 35 abuts against the large inner diameter side end of the rod body 39, so that the prying piece 35 is lifted relative to the second connecting pin shaft 32, the corresponding locking tab 30 is depressed relatively downward, so that the locking tooth will interfere with the movement of the movable pin 26, thus, the movable pin 26 will collide with the ratchet 36 continuously in the process of rotating along with the push rod 21 until the movable pin 26 stops moving after the tissue is clamped and finally enters a certain specific tooth slot 37, and at this time, even if the hands of the medical staff do not apply pinching force to the movable handle 12 any more, the pair of forceps wings 52 will not loosen the tissue, and the problem of tissue falling off will not occur. At this time, when the tissue clamped by the forceps fins 52 needs to be released, the toggle piece 41 is toggled by the hand to clamp the arc-shaped hook 40 with the opening 47, that is, the prying piece 35 is pressed downward relative to the second connecting pin shaft 32 at this time, so that the locking piece 30 is lifted upward relative to the second connecting pin shaft 32, so that the locking tooth does not interfere with the movable pin 26, at this time, for the movable pin 26, there is no structure to limit the freedom of movement of the movable pin in the hollow-out opening 33 of the locking piece 30, and the movable pin 26 gradually returns to a state where the pair of forceps fins 52 are opened under the return action force of the spring body 55 along with the push rod 21, that is, the movable pin 26 moves to the outside of the notch of the initial slot 48 of the locking piece 30 along with the push rod 21.

It should be noted that, when the pair of forceps fins 52 clamp the tissue of the human body, the pushing member connected to the movable handle 12 can generate a pushing action on the interference member, so that the interference member can generate an interference fit effect with the tooth-shaped portion of the synchronizing ring, thereby preventing the rotating member coupled to the forceps rod 1 from generating an unexpected rotation behavior, and also preventing the forceps rod 1 from generating an unexpected rotation motion, so as to prevent the pair of forceps fins 52 that clamp the tissue from generating an unexpected rotation motion to cause a pulling injury to the tissue.

The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.