WO2021217791A1

WO2021217791A1 - Biopsy forceps having matching jaws

Info

Publication number: WO2021217791A1
Application number: PCT/CN2020/095270
Authority: WO
Inventors: 黄云凤; 丁小良; 李玉茜; 徐业培
Original assignee: 南微医学科技股份有限公司
Priority date: 2020-04-30
Filing date: 2020-06-10
Publication date: 2021-11-04
Also published as: CN111388028A

Abstract

Biopsy forceps having matching jaws, capable of solving the problem in the prior art in which misalignment between jaw portions of biopsy forceps is common and cannot be automatically corrected afterwards and results in issues such as tearing. A head portion of a male jaw element (100) and a head portion of a female jaw element (200) of the biopsy forceps having matching jaws are matched by means of covering, and a handle portion of the male jaw element (100) and a handle portion of the female jaw element (200) are matched by inserting into each other. When one of the male jaw element (100) and the female jaw element (200) experiences a displacement, the displaced element drives, by means of the handle portions, the other element to shift synchronously. The biopsy forceps are self-correcting, facilitating the matching of jaws and effectively preventing tearing.

Description

Self-consistent sampling forceps

Cross-references to related applications

This disclosure claims the priority of the Chinese patent application filed with the Chinese Patent Office on April 30, 2020, with the application number CN2020103709466.2, titled "Self-consistent sampling forceps", the entire content of which is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the technical field of medical devices, in particular to a self-anastomosing sampling forceps.

Background technique

Sampling forceps are used for the forceps to cancel the biological tissue samples of the chemical tract or respiratory tract. The sampling forceps need to be opened and aligned with the biopsy tissue and the forceps heads closed. After opening, it is aligned with the cup of the mucosa, and when closed, the clamp heads need to be anastomosed.

At present, the existing sampling forceps, because of the thin cutting edge of the forceps, it is difficult to match the anastomosis, and the phenomenon of bite misalignment or weakness is prone to occur during use, and the phenomenon of frequent tearing and bleeding reduces the efficiency of the operation and increases the suffering of the patient.

The existing sampling forceps are used to obtain biopsy tissue by "clamping" and "tearing". The tearing will seriously damage the surrounding tissues, and the injury and bleeding will cause great pain to the patient; the method of tearing to obtain the tissue requires a large tightening force. At the same time, it needs to be pulled quickly. In this case, the clamp head is prone to tilt and lateral displacement, deviation or inaccurate extraction during tissue extraction, which affects the accuracy of diagnosis.

To sum up, the existing sampling forceps generally have problems such as dislocation or failure of automatic correction after the dislocation of the clamp head, which is likely to cause tearing.

Summary of the invention

The purpose of the present disclosure is to provide a self-anastomosing sampling forceps, so as to solve the common problems of the existing sampling forceps that the clamp heads are misaligned or cannot be automatically corrected after the misalignment, which is likely to cause tearing and the like.

In order to solve the above technical problems, the technical solutions provided by the present disclosure are as follows:

A self-anastomosing sampling forceps, including male forceps and female forceps;

The head of the male pliers and the head of the female pliers are in a wrap-around fit, and the shank of the male pliers and the shank of the female pliers are mutually plug-in fit;

When one of the male pliers and the female pliers is shifted, one of the male pliers and the female pliers that has shifted drives the other of the male pliers and the female pliers to shift synchronously through the handle.

Furthermore, the head of the male forceps and the head of the female forceps realize tissue cutting by means of line-to-surface contact.

Further, the head of the male pliers has a first inclined surface, the first inclined surface is arranged on the outer edge of the head of the male pliers; the head of the female pliers has a second inclined surface, the second inclined surface is arranged on The inner edge of the head of the female pliers has a different inclination angle between the second inclined surface and the first inclined surface; a line-to-surface contact is formed between the first inclined surface and the second inclined surface.

Furthermore, the outer diameters of the male pliers head and the female pliers head are the same, and, in the state of mutual covering, the male pliers head and the female pliers head are combined to form a cylindrical outer shape. surface.

Further, when the head of the male pliers and the head of the female pliers are in a state of covering each other, a step seam is formed on the edges of the head of the male pliers and the head of the female pliers.

Furthermore, the male pliers handle is provided with a male long plate, the female pliers handle is provided with a female long plate, the male long plate and the female long plate can rotate relative to each other; the male pliers head And the head of the female pliers closes as the male long plate and the female long plate approach each other, and opens as the male long plate and the female long plate move away from each other.

Furthermore, the male pliers handle is further provided with a male short plate, and the female pliers handle is also provided with a female short plate; the male short plate is attached to the inner side of the female long plate, and the female short plate It is attached to the inner side of the male long plate; the first positioning shaft passes through the male short plate, the male long plate, the female long plate and the female short plate.

Furthermore, the sampling tongs further includes a pliers head base, the pliers head base has a first fixing plate and a second fixing plate arranged in parallel; both ends of the first positioning shaft are fixed to the first fixing plate and the second fixing plate, respectively. Fixed board.

Further, the self-anastomosing sampling forceps includes a first driving mechanism, the first driving mechanism includes a first connecting rod, a second connecting rod and a first pull rod; the first connecting rod and the male long plate The end is hinged; the second link is hinged to the end of the female long plate, the first link and the second link are hinged; the first link, the second link The rod, the male long plate and the female long plate form a four-link mechanism; the top end of the first pull rod is connected to the hinge point between the first link and the second link, and is configured to The four-bar linkage can be pulled under the condition of self-contraction.

Furthermore, the male pliers handle is also provided with a male short plate, the female pliers handle is also provided with a female short plate; the male short plate is attached to the female long plate, and the female short plate is connected to the female short plate. The said long board fits.

Further, the self-anastomosing sampling forceps includes a second driving mechanism, the second driving mechanism includes a second pull rod, the top end of the second pull rod is hinged with the male long plate and the female long plate; The second pull rod is configured to drive the male long board and the female long board to open and close during the expansion and contraction process.

Further, the self-anastomosing sampling forceps further includes a positioning mechanism, the positioning mechanism includes staggered long holes arranged on the male long plate and the female short plate, respectively, and are respectively arranged on the male short plate. And the long holes staggered on the female long plate, and pass through the long holes on the male short plate, the long holes on the female long plate, the long holes on the male long plate and the The second positioning axis of the long hole on the female short board.

Furthermore, the sampling tongs further includes a pliers head base having a first fixing plate and a second fixing plate arranged in parallel, and two ends of the second positioning shaft are respectively fixed to the first fixing plate and the second fixing plate. The second fixed plate.

In combination with the above technical solutions, the technical effects that can be achieved by the present disclosure are:

In the above-mentioned sampling pliers, the head of the male pliers and the head of the female pliers adopt a covered bite, and the shank of the male pliers and the shank of the female pliers are inserted into each other, so that when the head of the male pliers is shifted during use , The shank of the male pliers shifts accordingly, the shank of the male pliers drives the shank of the female pliers to shift in the same direction, the offset of the female pliers shank drives the head of the female pliers to shift in the same direction, until the head of the female pliers and the head of the male pliers The part reoccludes to complete self-adjustment and achieve self-anastomosis.

Description of the drawings

In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic plan view of one of the self-anastomosing sampling forceps according to an embodiment of the present disclosure;

FIG. 2 is a schematic plan view of one of the self-anastomosing sampling forceps according to the embodiments of the present disclosure with the clamp head base removed; FIG.

FIG. 3 is a schematic diagram of the cooperation between the head of the male forceps and the head of the female forceps in one of the self-annotated sampling forceps provided by the embodiments of the present disclosure;

4 is a schematic plan view of another self-anastomosing sampling forceps provided by an embodiment of the disclosure;

FIG. 5 is a schematic diagram of a three-dimensional structure of another self-anastomosing sampling forceps provided by an embodiment of the disclosure;

6 is a schematic diagram of the open state of the male forceps and the female forceps in the self-anastomosing sampling forceps provided by an embodiment of the present disclosure;

7 is a schematic diagram of the three-dimensional structure of the self-anastomosing sampling forceps in a closed state according to an embodiment of the disclosure;

FIG. 8 is a schematic plan view of the closed state of the head of the male forceps and the head of the female forceps in the self-anastomosing sampling forceps provided by an embodiment of the present disclosure;

Fig. 9 is a schematic cross-sectional view of A-A in Fig. 8;

Fig. 10 is a schematic cross-sectional view of A-A in Fig. 8 (where a step seam is shown).

icon:

100-male pliers; 200-female pliers; 101-first inclined plane; 201-second inclined plane; 110-male long board; 120-male short board; 210-female long board; 220-female short board; 300-clamp head Seat; 310-first fixing plate; 320-second fixing plate; 400-first positioning shaft; 510-first connecting rod; 520-second connecting rod; 530-first pulling rod; 600-second pulling rod; 700 -Second positioning axis; 800-step seam.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments These are a part of the embodiments of the present disclosure, but not all of the embodiments. The components of the embodiments of the present disclosure generally described and illustrated in the drawings herein may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed present disclosure, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once a certain item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer", etc. The indicated position or positional relationship is based on the position or positional relationship shown in the drawings, or the position or positional relationship usually placed when the product of the invention is used. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying. The referred device or element must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second" or "third" are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical" and "dangling" do not mean that the component is required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms “setup”, “installation”, “connection” and “connection” should be understood in a broad sense, for example, they may be fixed connections. It can also be detachably connected or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood under specific conditions.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other

Example one

This embodiment provides a self-anastomosing sampling forceps, please refer to FIG. 1 to FIG. 10 together. The self-anastomosing sampling forceps includes a male forceps 100 and a female forceps 200;

The head of the male pliers 100 and the head of the female pliers 200 are covered with each other;

When one of the male pliers 100 and the female pliers 200 is offset, one of the male pliers 100 and the female pliers 200 that is offset is driven by the handle to drive the other of the male pliers 100 and the female pliers 200 to shift synchronously.

In the above-mentioned sampling pliers, the head of the male pliers 100 and the head of the female pliers 200 are covered in an occlusal manner, and the shank of the male pliers 100 and the shank of the female pliers 200 are mated with each other, so that when the head of the male pliers 100 is in use When deviation occurs, the shank of the male pliers 100 will deviate accordingly. The shank of the male pliers 100 drives the shank of the female pliers 200 to deviate in the same direction, and the deflection of the shank of the female pliers 200 drives the head of the female pliers 200 to deviate in the same direction. Until the head of the female pliers 200 and the head of the male pliers 100 are re-occluded, the self-adjustment is completed and self-anastomosis is achieved.

Among the alternatives of this embodiment, more preferably,

Please refer to Figure 9, which is a cross-sectional view of A-A in Figure 8,

The head of the male pliers 100 has a first inclined surface 101, and the first inclined surface 101 is disposed on the outer edge of the head of the male pliers 100;

The head of the female pliers 200 has a second inclined surface 201, the second inclined surface 201 is disposed on the inner edge of the head of the female pliers 200, and the inclination angles of the second inclined surface 201 and the first inclined surface 101 are different;

A line-to-surface contact is formed between the first inclined surface 101 and the second inclined surface 201. Even if the head of the male pliers 100 or the head of the female pliers 200 is offset and the cutting edge is deformed, the head of the male pliers 100 and the head of the female pliers 200 can always be guaranteed The line surfaces of the first inclined surface 101 and the second inclined surface 201 are in contact with each other, thereby realizing line cutting. The cutting method adopting line-surface contact, because the line-surface contact area is small, the cutting ability is stronger, it can avoid tearing the tissue, and prevent tissue damage or bleeding from causing great pain to the patient.

Among the alternatives of this embodiment, more preferably,

The outer diameters of the head of the male pliers 100 and the head of the female pliers 200 are the same, and, in a state of mutual covering, the head of the male pliers 100 and the head of the female pliers 200 combine to form a cylindrical outer surface. The cylindrical outer surface can avoid damage to the tissue surface by the outer surface of the forceps head, and is more beneficial to pass through the endoscope channel.

Among the alternatives of this embodiment, more preferably,

When the head of the male pliers 100 and the head of the female pliers 200 are covered with each other, a step seam 800 is formed on the edge of the head of the male pliers 100 and the head of the female pliers 200. Regarding the shape of the step slit 800, please refer to FIG. 10 for details. The outer edge of the head of the male pliers 100 is provided with a first inclined surface 101, and the end surface is set to be a plane (the end surface is the horizontal plane of the head of the male pliers 100 in FIG. 10). The inner edge of the head of the female pliers 200 is provided with a second inclined surface 201, and the end surface is set as a plane (the end surface is the horizontal plane of the head of the female pliers 200 in FIG. 10), and the inclination angles of the first inclined surface 101 and the second inclined surface 201 Different, in this way, a triangular gap can be formed at the edge. The gap is the step seam 800. The step seam 800 provides a certain error tolerance space. It will not form a sharp edge during use. Even if the part is deformed, it will always be The cylinder without sharp edges helps to protect the patient and the surgical equipment in use during the operation.

There are many ways to realize the mutual plug-in cooperation between the handle of the male pliers 100 and the handle of the female pliers 200. Two specific implementations are listed below:

method one:

Please refer to Figures 1 to 3 together. The shank of the male pliers 100 is provided with a male long plate 110, and the shank of the female pliers 200 is provided with a female long plate 210. The male long plate 110 and the female long plate 210 can rotate relative to each other; The head 100 and the head of the female clamp 200 close as the male long plate 110 and the female long plate 210 approach each other, and open as the male long plate 110 and the female long plate 210 move away from each other.

In an alternative solution of this embodiment, preferably, referring to FIG. 3, the shank of the male pliers 100 is further provided with a male short plate 120, and the shank of the female pliers 200 is also provided with a female short plate 220; the male short plate 120 is attached to The inner side of the female long board 210 and the female short board 220 are attached to the inner side of the male long board 110.

In an alternative solution of this embodiment, preferably, the first positioning shaft 400 passes through the male long plate 110, the female short plate 220, the male short plate 120, and the female long plate 210 in sequence.

In an alternative solution of this embodiment, preferably, the sampling clamp further includes a clamp head base 300, which has a first fixing plate 310 and a second fixing plate 320 arranged in parallel, and both ends of the first positioning shaft 400 They are respectively fixed to the first fixing plate 310 and the second fixing plate 320.

Regarding the structure of the pliers head base 300, specifically: the pliers head base 300 is arranged in a cylindrical structure as a whole, with a notch in the middle, and the shank of the male pliers 100 and the shank of the female pliers 200 are located in the notches. The two sides of the notch are respectively the first fixing plate 310 and the second fixing plate 320, and the first fixing plate 310 and the second fixing plate 320 are respectively provided with connecting holes configured to cooperate with the first positioning shaft 400. The bottom of the notch is provided with an opening configured to pass through the first pull rod 530.

The following is a detailed introduction to the principle of self-consistent implementation in Method 1:

When the head of the male pliers 100 shifts, the male long plate 110 and the male short plate 120 are displaced as a whole. At the same time, the female long plate 210 and the female short plate 220 are deflected on the male long plate 110 and the male short plate 120. Under the action of the force, the deviation in the same direction, the deviation of the female long plate 210 and the female short plate 220 in the same direction drives the head of the female pliers 200 to deviate in the same direction, thereby realizing self-anastomosis.

The driving mode of the male long board 110 and the female long board 210 in this manner is introduced as follows:

Please refer to FIG. 2, the self-anastomosing sampling forceps includes a first driving mechanism, and the first driving mechanism includes a first connecting rod 510, a second connecting rod 520, and a first pull rod 530;

The first connecting rod 510 is hinged to the end of the male long plate 110; the second connecting rod 520 is hinged to the end of the female long plate 210, and the first connecting rod 510 and the second connecting rod 520 are hinged; the first connecting rod 510 , The second link 520, the male long plate 110 and the female long plate 210 form a four-bar linkage mechanism;

The top end of the first tie rod 530 is connected to the hinge point between the first tie rod 510 and the second tie rod 520, and is configured to be able to pull the four-bar linkage when it is telescopic.

in particular:

When it is necessary to open the self-anastomosing forceps, the first pull rod 530 is driven to move in the direction close to the clamp head. When the first pull rod 530 moves in the direction close to the clamp head, it will drive the four-bar linkage to extend laterally. At this time, the first link The angle between the 510 and the second connecting rod 520 becomes larger, and the angle between the male long plate 110 and the female long plate 210 becomes larger, so that the head of the male pliers 100 and the head of the female pliers 200 are opened.

When it is necessary to close the self-anastomosing forceps, the first pull rod 530 is driven to move away from the forceps head. When the first pull rod 530 moves away from the forceps head, it will drive the four-bar linkage to extend longitudinally. At this time, the first linkage The angle between the 510 and the second connecting rod 520 becomes smaller, and the angle between the male long plate 110 and the female long plate 210 becomes smaller, so that the head of the male pliers 100 and the head of the female pliers 200 are closed.

Way two:

Please also refer to FIG. 4, the shank of the male pliers 100 is provided with a male long plate 110, and the shank of the female pliers 200 is provided with a female long plate 210, and the male long plate 110 and the female long plate 210 can rotate relative to each other;

The head of the male pliers 100 and the head of the female pliers 200 are closed as the male long plate 110 and the female long plate 210 approach each other, and open as the male long plate 110 and the female long plate 210 move away from each other.

The shank of the male pliers 100 is also provided with a male short plate 120, and the shank of the female pliers 200 is also provided with a female short plate 220;

The male short board 120 is attached to the female long board 210, and the female short board 220 is attached to the male long board 110.

In the alternatives of this embodiment, preferably, referring to Figures 5 and 6, the self-annotated sampling forceps further includes a positioning mechanism, and the positioning mechanism includes staggered arrangement of the male long plate 110 and the female short plate 220 respectively. Long holes, staggered long holes arranged on the male short plate 120 and female long plate 210, and pass through the long holes on the male short plate 120, the long holes on the female long plate 210, and the male long plate 110 in turn And the second positioning shaft 700 of the long hole on the female short board 220.

Among the alternatives of this embodiment, more preferably,

The sampling clamp also includes a clamp head base 300, which has a first fixing plate 310 and a second fixing plate 320 arranged in parallel, and two ends of the second positioning shaft 700 are respectively fixed to the first fixing plate 310 and the second fixing plate. 320.

Regarding the structure of the pliers head base 300, specifically: the pliers head base 300 is arranged in a cylindrical structure as a whole, with a notch in the middle, and the shank of the male pliers 100 and the shank of the female pliers 200 are located in the notches. The two sides of the notch are respectively the first fixing plate 310 and the second fixing plate 320, and the first fixing plate 310 and the second fixing plate 320 are respectively provided with connecting holes configured to cooperate with the second positioning shaft 700.

The following describes the driving mode of the male long board 110 and the female long board 210 in this way

4, the self-anastomosing sampling forceps includes a second driving mechanism, the second driving mechanism includes a second pull rod 600, the top end of the second pull rod 600 is hinged with the male long plate 110 and the female long plate 210;

The second pull rod 600 is configured to drive the male long board 110 and the female long board 210 to open and close during the expansion and contraction process.

The exercise mode is described in detail as follows:

When the second pull rod 600 moves in the direction of the clamp head, the male long plate 110 and the female long plate 210 are pushed up, and the angle between the two becomes larger. At the same time, the male long plate 110, the female long plate 210, and the male long plate 210 are pushed up. The short plate 120 and the female short plate 220 move in directions away from each other under the restriction of the respective long holes around the second positioning shaft 700, and the head of the male pliers 100 and the head of the female pliers 200 are opened.

When the second pull rod 600 moves away from the clamp head, the angle between the male long plate 110 and the female long plate 210 becomes smaller under the drive of the second pull rod 600. At the same time, the male long plate 110 and the female long plate 210 , The male short plate 120 and the female short plate 220 move in a direction approaching each other under the restriction of the respective long holes around the second positioning shaft 700, and the head of the male pliers 100 and the head of the female pliers 200 are closed.

In addition, it needs to be added that the current traditional sampling clamps require various assembly and welding processes to ensure that the clamp heads are consistent. The sampling clamp provided in this embodiment only includes the male clamp 100, the female clamp 200, and the clamp head base 300. The tie rod and two connecting parts have a small number of parts and simple assembly, which greatly improves production efficiency.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit it; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present disclosure. Scope.

Claims

A self-anastomosing sampling forceps, which is characterized in that it comprises a male forceps and a female forceps;

The head of the male pliers and the head of the female pliers are in a wrap-around fit, and the shank of the male pliers and the shank of the female pliers are inter-plug-in fit;

When one of the male pliers and the female pliers is offset, one of the male pliers and the female pliers that is offset drives the other of the male pliers and the female pliers to shift synchronously through the handle.
The self-anastomosing sampling forceps according to claim 1, wherein the head of the male forceps and the head of the female forceps realize tissue cutting in a way of line-to-surface contact.
The self-anastomosing sampling forceps according to claim 2, characterized in that,

The head of the male pliers has a first inclined surface, and the first inclined surface is disposed on the outer edge of the head of the male pliers;

The head of the female pliers has a second inclined surface, the second inclined surface is disposed on the inner edge of the head of the female pliers, and the inclination angles of the second inclined surface and the first inclined surface are different;

A line-to-surface contact is formed between the first inclined surface and the second inclined surface, and finally a line is formed.
The self-anastomosing sampling forceps according to claim 1, characterized in that,

The outer diameters of the male pliers head and the female pliers head are the same, and, in a state of mutual covering, the male pliers head and the female pliers head combine to form a cylindrical outer surface.
The self-anastomosing sampling forceps according to any one of claims 1 to 4, characterized in that,

When the head of the male pliers and the head of the female pliers are covered with each other, a step seam is formed on the edges of the head of the male pliers and the head of the female pliers.
The self-anastomosing sampling forceps according to claim 1, characterized in that,

The male pliers handle is provided with a male long plate, the female pliers handle is provided with a female long plate, and the male long plate and the female long plate can rotate relative to each other;

The head of the male pliers and the head of the female pliers are closed as the male long plate and the female long plate approach each other, and open as the male long plate and the female long plate move away from each other.
The self-anastomosing sampling forceps according to claim 6, characterized in that,

The male pliers handle is also provided with a male short plate, and the female pliers handle is also provided with a female short plate;

The male short board is attached to the inner side of the female long board, and the female short board is attached to the inner side of the male long board;

The first positioning shaft passes through the male long plate, the female short plate, the male short plate and the female long plate.
The self-anastomosing sampling forceps according to claim 7, characterized in that,

The sampling clamp also includes a clamp head base having a first fixing plate and a second fixing plate arranged in parallel;

Both ends of the first positioning shaft are respectively fixed to the first fixing plate and the second fixing plate.
The self-anastomosing sampling forceps according to claim 8, characterized in that,

The self-anastomosing sampling forceps includes a first driving mechanism,

The first driving mechanism includes a first connecting rod, a second connecting rod, and a first pull rod;

The first link is hinged with the end of the male long plate; the second link is hinged with the end of the female long plate, and the first link and the second link are hinged The first link, the second link, the male long plate and the female long plate form a four-bar linkage mechanism;

The top end of the first tie rod is connected to the hinge point between the first tie rod and the second tie rod, and is configured to be able to pull the four-bar linkage mechanism under the condition of self-contraction.
The self-anastomosing sampling forceps according to claim 6, characterized in that,

The male pliers handle is also provided with a male short plate, and the female pliers handle is also provided with a female short plate;

The male short board is attached to the outer side of the female long board, and the female short board is attached to the outer side of the male long board.
The self-anastomosing sampling forceps according to claim 10, characterized in that,

The self-anastomosing sampling forceps includes a second driving mechanism, and the second driving mechanism includes a second pull rod, and the top end of the second pull rod is hinged with the male long plate and the female long plate;

The second pull rod is configured to drive the male long board and the female long board to open and close during the expansion and contraction process.
The self-anastomosing sampling forceps according to claim 11, characterized in that,

The self-anastomosing sampling forceps further includes a positioning mechanism that includes staggered long holes arranged on the male long plate and the female short plate, respectively, and are respectively arranged on the male short plate and the female short plate. The staggered long holes on the long plate, and the long holes on the male short plate, the long holes on the female long plate, the long holes on the male long plate and the female short plate in turn The second positioning axis of the long hole.
The self-anastomosing sampling forceps according to claim 12, characterized in that,

The sampling pliers further includes a pliers head base having a first fixing plate and a second fixing plate arranged in parallel, and two ends of the second positioning shaft are respectively fixed to the first fixing plate and the second fixing plate .