Stomach wall tissue biopsy forceps under laparoscope

Abstract

The invention discloses stomach wall tissue biopsy forceps under a laparoscope, and belongs to the technical field of medical instruments. The biopsy forceps aim at solving the problems that existing biopsy forceps are low in sampling efficiency and inconvenient in angle adjustment. The device comprises a fixed pipe and a rotating pipe, a first pull rod is slidably connected into the fixed pipe, a second pull rod is slidably connected into the rotating pipe, an extension column is integrally formed at one end of the second pull rod, a limiting ball is integrally formed at one end of the extension column, and a limiting groove matched with the extension column and the limiting ball is formed in one end of the first pull rod; a connecting part is arranged between the fixed pipe and the rotating pipe and is used for connecting the fixed pipe and the rotating pipe; biopsy forceps are installed at the end, away from the fixed tube, of the rotating tube, and the biopsy forceps and the rotating tube rotate through a connecting part. The driving part is arranged at one end of the fixing tube and used for driving the first pull rod to move, a plurality of samples can be taken through one-time insertion, angle adjustment is flexible, operation is labor-saving, and the device is used for stomach wall tissue sampling under a laparoscope.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a laparoscopic gastric wall tissue biopsy forceps. Background Technology

[0002] Laparoscopic surgery is widely used in the diagnosis of gastric wall diseases due to its minimally invasive nature and rapid recovery. Gastric wall biopsy forceps are the key instrument for obtaining diseased tissue in this type of surgery. In clinical practice, doctors need to use biopsy forceps to accurately grasp gastric wall tissue samples to provide a basis for pathological analysis. The ease of use and sampling efficiency of these forceps directly affect the surgical process.

[0003] Existing biopsy forceps have revealed many problems that urgently need to be solved in clinical applications. For example, the angle of the biopsy forceps is inconvenient to adjust, often requiring doctors to adjust their grip or even operate with their hands reversed, which reduces the accuracy of sampling and easily leads to operator fatigue. At the same time, only a single tissue sample can be obtained with each insertion. If multiple sampling is required, the instrument must be repeatedly inserted and removed, increasing the number of surgical steps and the risk of trauma to the patient. In order to address the above problems, this invention proposes a laparoscopic gastric wall tissue biopsy forceps. Summary of the Invention

[0004] This invention provides a laparoscopic gastric wall tissue biopsy forceps, which overcomes the shortcomings of the prior art where the angle adjustment of the biopsy forceps is inconvenient.

[0005] This invention provides the following technical solution: A laparoscopic gastric wall tissue biopsy forceps includes a fixed tube and a rotating tube. A first pull rod is slidably connected inside the fixed tube, and a second pull rod is slidably connected inside the rotating tube. An extension column is integrally formed at one end of the second pull rod, and a limiting ball is integrally formed at one end of the extension column. A limiting groove adapted to the extension column and the limiting ball is provided at one end of the first pull rod. A connecting part is provided between the fixed tube and the rotating tube for connecting the fixed tube and the rotating tube. A biopsy forceps is installed at the end of the rotating tube away from the fixed tube, and the biopsy forceps and the rotating tube are connected to rotate. The drive unit is located at one end of the fixed tube and is used to drive the first pull rod to move.

[0006] Furthermore, the drive unit includes a first handle and a second handle arranged in a cross configuration, which are rotatably connected. The first handle is fixed to a fixed tube. The bottom of the first pull rod is provided with a through drive hole. The top of the second handle extends into the drive hole and is clearance-fitted with the drive hole. The bottom of the fixed tube is provided with a clearance hole for the end of the second handle to pass through.

[0007] Furthermore, the connecting part includes a fixing ring and two limiting clamps. The two limiting clamps are symmetrically arranged between the fixing tube and the rotating tube and are fixed by bolts. The rotating tube has a frustum-shaped limiting head integrally formed at the end near the limiting clamp. The limiting head is located inside the limiting clamp. The end of the limiting head near the fixing tube and the contact surface with the inner wall of the limiting clamp are both equipped with rotating balls. The fixing ring is fixed to the outer wall of the rotating tube. A sliding sleeve is slidably fitted around the circumference of the fixing ring. An installation ring is fixedly connected to one end of the sliding sleeve. A spring is installed between the installation ring and the fixing ring. Semicircular extension rings are fixedly connected to the side of the limiting clamp near the installation ring. The two extension rings are merged to form a circular ring and a plurality of evenly distributed first positioning rods are fixed on the outer wall. The inner wall of the installation ring is provided with a plurality of second sliding grooves that cooperate with the first positioning rods.

[0008] Furthermore, the outer wall of the fixing ring is integrally formed with a plurality of evenly distributed second positioning rods, and the inner wall of the sliding sleeve is provided with a plurality of first sliding grooves that cooperate with the second positioning rods.

[0009] Furthermore, a limiting ring for limiting the position of the limiting hoop is fixed to the outer wall of the fixed tube.

[0010] Furthermore, the biopsy forceps includes a forceps frame, which is threaded to one end of a rotating tube. A connecting tube is slidably connected inside the forceps frame. The connecting tube is inserted into and interference-fitted with a second pull rod. A first forceps head and a second forceps head are rotatably connected between the two sides of the forceps frame. The first forceps head and the second forceps head rotate coaxially and are both rotatably connected to the connecting tube by a connecting rod.

[0011] Furthermore, the second clamp head has multiple limiting cavities integrally formed inside, and limiting rods are fixed at the four corners of each limiting cavity. The ends of the limiting rods all face the center of the limiting cavity. The first clamp head has multiple push rods integrally formed inside, and the push rods correspond to the limiting cavities.

[0012] Furthermore, a V-shaped spring is fixed between the first handle and the second handle by bolts.

[0013] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0014] In this invention, by setting up a limiting clamp, a limiting head and a ball bearing in the connecting part, combined with the cooperation of a sliding sleeve, a mounting ring and a spring, the rotation restriction can be released by sliding the sliding sleeve, and the rotating tube can drive the biopsy forceps to adjust the angle flexibly, so that the handle maintains a comfortable grip angle, avoids reverse hand operation, and improves the sampling accuracy and doctor's operation comfort.

[0015] In this invention, by using the movable push rod, the limiting cavity, and the limiting rod, the sample can be pressed and embedded into the limiting rod after sampling and fixed. Multiple samplings can be completed with one insertion, eliminating the need for repeated insertion and removal of the device, reducing surgical operation steps, and improving sampling efficiency. In this invention, the first handle, the second handle and the spring are arranged in a cross configuration of the drive unit, and the second handle is adapted to the drive hole of the first pull rod. Pressing the handle can drive the pull rod transmission, and the spring helps the handle to automatically reset. The operation is smooth and effortless, shortens the time of a single sampling operation, and improves the convenience of surgical operation. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a laparoscopic gastric wall tissue biopsy forceps provided in an embodiment of the present invention; Figure 2 This is a partial cross-sectional view of a laparoscopic gastric wall tissue biopsy forceps provided in an embodiment of the present invention; Figure 3 This is a partially exploded structural diagram of a laparoscopic gastric wall tissue biopsy forceps provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the second pull rod mounting structure of a laparoscopic gastric wall tissue biopsy forceps provided in an embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of a biopsy forceps for laparoscopic gastric wall tissue biopsy provided in an embodiment of the present invention.

[0017] Figure label: 1. Fixed tube; 2. First handle; 3. Second handle; 4. Spring; 5. Rotating tube; 6. Pliers; 7. First pull rod; 8. Drive hole; 9. Second pull rod; 10. Limiting head; 11. Limiting clamp; 12. Limiting ring; 13. Fixed ring; 14. Sliding sleeve; 15. Mounting ring; 16. Spring; 17. Extension ring; 18. First positioning rod; 19. Second positioning rod; 20. First sliding groove; 21. Second sliding groove; 22. Limiting groove; 23. Extension column; 24. Limiting ball; 25. Connecting tube; 26. First pliers head; 27. Second pliers head; 28. Limiting rod; 29. ​​Top rod; 30. Connecting rod; 31. Limiting cavity. Detailed Implementation

[0018] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0019] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0020] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized. Example 1:

[0021] Reference Figures 1-5A laparoscopic gastric wall tissue biopsy forceps comprises a fixed tube 1 and a rotating tube 5, both made of medical-grade stainless steel. The fixed tube 1 has a sliding hole along its axial direction inside, into which a first pull rod 7 is fitted and can slide smoothly. The rotating tube 5 also has a sliding hole inside, into which a second pull rod 9 is fitted and can slide freely. An extension post 23 is integrally formed at the end of the second pull rod 9 closest to the first pull rod 7, while a limiting ball 24 is integrally formed at the end of the extension post 23 furthest from the second pull rod 9. The diameter of the limiting ball 24 is larger than the diameter of the extension post 23, forming a stepped structure. Correspondingly, the end face of the first pull rod 7 near the second pull rod 9 is provided with a limiting groove 22 that is adapted to the extension column 23 and the limiting ball 24. The limiting ball 24 can be inserted into the limiting groove 22. After assembly, the limiting ball 24 cannot detach from the limiting groove 22 on its own. At the same time, the extension column 23 can rotate at a certain angle within the limiting groove 22. This structural design allows the first pull rod 7 to stably drive the second pull rod 9 to move synchronously when it moves. At the same time, it allows the second pull rod 9 to maintain a connection with the first pull rod 7 and not fall off when the rotating tube 5 rotates relative to the fixed tube 1, thus facilitating the rotation of the rotating tube 5 and the second pull rod 9.

[0022] The fixed tube 1 and the rotating tube 5 are connected by a connecting part, which includes a fixed ring 13 and two limiting rings 11. A limiting ring 12 is fixed on the outer wall of the fixed tube 1. The limiting ring 12 is fixed to the fixed tube 1 by welding. Its function is to axially limit the limiting ring 11 and prevent the limiting ring 11 from sliding along the axis of the fixed tube 1 during use. Notches are also provided on both sides of the limiting ring 12. The inner wall of the limiting ring 11 is provided with protrusions that cooperate with the notches, which are also used to limit the limiting ring 11. The two limiting rings 11 are symmetrical semi-circular ring structures. They are fastened to the connection between the fixed tube 1 and the rotating tube 5. The fixing is achieved by bolts passing through the connecting ears at both ends of the limiting ring 11. The bolts are medical grade internal hex bolts. After tightening, the two limiting rings 11 form a complete circular structure.

[0023] A frustum-shaped limiting head 10 is integrally formed at one end of the rotating tube 5 near the limiting clamp 11. The small-diameter end of the limiting head 10 is connected to the main body of the rotating tube 5, and the large-diameter end faces the fixed tube 1. The limiting head 10 is located inside the ring formed by the two limiting clamps 11. Its outer diameter is matched with the inner diameter of the limiting clamp 11. In order to reduce the rotational resistance, ball grooves are provided on the end face of the limiting head 10 near the fixed tube 1 and on the circumferential surface where the limiting head 10 contacts the inner wall of the limiting clamp 11. The balls are installed in the ball grooves, and part of the balls protrudes outside the ball grooves, so that the sliding friction between the limiting head 10 and the limiting clamp 11 is transformed into rolling friction, which greatly improves the smoothness of the rotation of the rotating tube 5 relative to the fixed tube 1. Example 2:

[0024] Reference Figures 1-5 Based on Example 1, an improved laparoscopic gastric wall tissue biopsy forceps was developed.

[0025] The fixing ring 13 is fixed on the outer wall of the rotating tube 5. Multiple evenly distributed second positioning rods 19 are integrally formed on the outer wall of the fixing ring 13. The multiple second positioning rods 19 are arranged at equal angles along the circumference of the fixing ring 13. The sliding sleeve 14 is slidably fitted onto the outside of the fixed ring 13. Multiple first sliding grooves 20 are formed on the inner wall of the sliding sleeve 14 to cooperate with the second positioning rods 19. The first sliding grooves 20 extend along the axial direction of the sliding sleeve 14. The second positioning rods 19 slide within the first sliding grooves 20, allowing the sliding sleeve 14 to slide only along the axial direction of the fixed ring 13 and preventing it from rotating relative to the fixed ring 13. An installation ring 15 is welded to one end of the sliding sleeve 14 near the limiting clamp 11. A spring 16 is installed between the installation ring 15 and the fixed ring 13. The spring 16 is fitted onto the outside of the rotating tube 5. In its natural state, it exerts a spring force on the installation ring 15 towards the limiting clamp 11, pushing the installation ring 15 to maintain contact with the limiting clamp 11. Both limiting clamps 11 are welded to the side near the installation ring 15. A semi-circular extension ring 17 is fixed. When the two limiting clamps 11 are engaged, the two extension rings 17 merge to form a complete ring. Multiple evenly distributed first positioning rods 18 are integrally formed on the outer wall of the ring. Multiple second sliding grooves 21 that cooperate with the first positioning rods 18 are opened on the inner wall of the mounting ring 15. Under the elastic force of the spring 16, the first positioning rods 18 slide into the second sliding grooves 21, thereby restricting the rotation of the rotating tube 5 and keeping the biopsy forceps at a stable angle. When it is necessary to adjust the angle, simply slide the sliding sleeve 14 away from the limiting clamps 11. The sliding sleeve 14 drives the mounting ring 15 to compress the spring 16 and disengage from the extension ring 17. At this time, the first positioning rods 18 disengage from the second sliding grooves 21, and the rotating tube 5 can rotate freely, thereby driving the biopsy forceps to adjust the angle.

[0026] The drive unit is located at the end of the fixed tube 1 away from the rotating tube 5, and is used to drive the first pull rod 7 to move along the axis of the fixed tube 1. The drive unit includes a first handle 2 and a second handle 3 arranged in a cross configuration. The intersection of the first handle 2 and the second handle 3 is rotatably connected by a medical pin, allowing the second handle 3 to rotate flexibly relative to the first handle 2. The top of the first handle 2 is fixed to the fixed tube 1. The bottom of the first pull rod 7 has a drive hole 8 that extends radially through it. The top of the second handle 3 extends into the drive hole 8, and the second handle 3 and the drive hole 8 are fitted with a clearance fit, allowing the second handle 3 to rotate smoothly. The first lever 7 is moved. A clearance hole is provided at the bottom of the fixed tube 1 corresponding to the position of the second handle 3. The clearance hole is elongated and its length meets the stroke requirements when the second handle 3 is rotated, so as to avoid interference between the second handle 3 and the fixed tube 1. In order to enable the second handle 3 to automatically return to its original position after being pressed, a V-shaped spring piece 4 is fixed between the first handle 2 and the second handle 3 by bolts. The spring piece 4 is made of elastic stainless steel. In its natural state, it will generate an outward elastic force on the second handle 3. When the pressure of pressing the second handle 3 is released, the elastic force of the spring piece 4 can push the second handle 3 back to its initial position.

[0027] A biopsy forceps is installed at the end of the rotating tube 5 away from the fixed tube 1 for sampling gastric wall tissue. The forceps includes a forceps frame 6, a connecting tube 25, a first forceps head 26, and a second forceps head 27. One end of the forceps frame 6 has an external thread, and the end of the rotating tube 5 away from the fixed tube 1 has an internal thread. The forceps frame 6 is fixed to the rotating tube 5 via a threaded connection, facilitating disassembly and replacement of the biopsy forceps. A sterile medical sealing ring is fitted at the threaded connection, tightly fitting the end faces of both to prevent fluid ingress and bacterial growth. A sliding hole is formed inside the forceps frame 6 along its axial direction. The connecting tube 25 is fitted into this sliding hole and can slide freely. One end of the connecting tube 25 is connected to the second pull rod 9 via an insertion method, with an interference fit between the two to ensure... When the second pull rod 9 moves, it can stably drive the connecting tube 25 to move synchronously. The first clamp head 26 and the second clamp head 27 are both made of medical titanium alloy, which has good biocompatibility and strength. They are symmetrically arranged on both sides of the clamp frame 6 and are rotatably connected to the clamp frame 6 through medical pins. The rotation axes of the first clamp head 26 and the second clamp head 27 are kept coaxial. The first clamp head 26 and the second clamp head 27 are connected to the connecting tube 25 through the connecting rod 30. The two ends of the connecting rod 30 are rotatably connected to the clamp head and the connecting tube 25 through pins, forming a parallelogram linkage mechanism. When the connecting tube 25 moves along the axis of the clamp frame 6, the connecting rod 30 can drive the ends of the first clamp head 26 and the second clamp head 27 to move closer or further apart, so as to realize the sampling action.

[0028] To achieve the function of obtaining multiple samples with a single insertion, the second clamp head 27 has multiple integrally formed limiting cavities 31. These limiting cavities 31 are evenly distributed along the length of the second clamp head 27. Each limiting cavity 31 has a limiting rod 28 welded to its four corners. The limiting rod 28 is made of medical stainless steel wire with good elasticity, and its ends are all bent towards the center of the limiting cavity 31 to form a space with elastic clamping effect. The first clamp head 26 has multiple integrally formed push rods 29. The number of push rods 29 is the same as the number of limiting cavities 31 and their positions correspond one-to-one. The ends of the push rods 29 have an arc-shaped structure to avoid excessive compression and damage to the tissue samples.

[0029] The working principle and usage process of this technical solution are as follows: During operation, the doctor inserts the biopsy forceps of the device into the patient's body through the laparoscopic surgical incision. By pressing the second handle 3, the doctor rotates it. The second handle 3 drives the first pull rod 7 to move through the drive hole 8. The first pull rod 7 pulls the second pull rod 9 to move through the limiting groove 22 and the limiting ball 24. The second pull rod 9 drives the connecting tube 25 to move. The connecting tube 25 pulls the ends of the first forceps head 26 and the second forceps head 27 closer together through the two connecting rods 30, thereby achieving sampling. After sampling, by rotating the biopsy forceps or finely adjusting the opening and closing degree of the first and second handles, the sample held is released from the forceps head and falls into the empty limiting cavity. Then the forceps head is closed, and the sample is pressed into the limiting rod 28 by the top rod 29 on the first forceps head 26 to complete the fixation. Sampling can be performed again, thus obtaining multiple samples in one insertion and reducing operation steps. During the sampling process, the sliding sleeve 14 can be slidable, which drives the mounting ring 15 to move and disengage from the extension ring 17. Then, the sliding sleeve 14 is rotated, which causes the rotating tube 5 and the biopsy forceps to rotate, adjusting the angle of the biopsy forceps. This ensures the correct operating angle of the first handle 2 and the second handle 3 during the doctor's operation, improving the comfort of use, avoiding reverse operation, and improving the accuracy of sampling. After the sliding sleeve 14 is released, the mounting ring 15 is reset, and the biopsy forceps are kept stable by the first positioning rod 18 and the second sliding groove 21.

[0030] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A laparoscopic stomach wall tissue biopsy forceps, characterized in that, The utility model relates to a medical biopsy device, including: Fixed pipe (1) and rotating pipe (5), the first pull rod (7) is slidably connected in fixed pipe (1), the second pull rod (9) is slidably connected in rotating pipe (5), one end of second pull rod (9) is integrally formed with extension column (23), one end of extension column (23) is integrally formed with limit ball (24), one end of first pull rod (7) is provided with limit slot (22) with extension column (23) and limit ball (24) adaptation, the connecting portion is set between fixed pipe (1) and rotating pipe (5) for connecting fixed pipe (1) and rotating pipe (5), The biopsy forceps is installed at the end of the rotating pipe (5) away from the fixed pipe (1), and the biopsy forceps and the rotating pipe (5) are rotated by the connecting portion. The driving portion is arranged at one end of the fixed pipe (1) for driving the first pull rod (7) to move.

2. The laparoscopic stomach wall tissue biopsy forceps according to claim 1, wherein, The driving portion includes the first handle (2) and the second handle (3) arranged in cross, the first handle (2) and the second handle (3) are rotationally connected, the first handle (2) is fixed to the fixed pipe (1), the bottom of the first pull rod (7) is provided with a driving hole (8) penetrating through, the top of the second handle (3) extends into the driving hole (8) and is in clearance fit with the driving hole (8), and the bottom of the fixed pipe (1) is provided with an avoiding hole for the end of the second handle (3) to pass through.

3. The laparoscopic stomach wall biopsy forceps according to claim 1, wherein The connecting portion includes the fixed ring (13) and two limit hoops (11), the two limit hoops (11) are symmetrically arranged between the fixed pipe (1) and the rotating pipe (5) and are fixed by bolts, one end of the rotating pipe (5) close to the limit hoops (11) is integrally formed with a conical limit head (10), the limit head (10) is located in the limit hoop (11), the end of the limit head (10) close to the fixed pipe (1) and the contact surface with the inner wall of the limit hoop (11) are rotationally provided with rolling balls, the fixed ring (13) is fixed to the outer wall of the rotating pipe (5), the circumferential surface of the fixed ring (13) is slidably sleeved with a sliding sleeve (14), one end of the sliding sleeve (14) is fixedly connected with a mounting ring (15), the mounting ring (15) and the fixed ring (13) are provided with a spring (16), one side of the limit hoop (11) close to the mounting ring (15) is fixedly connected with a semicircular extension ring (17), the two extension rings (17) are combined to form a circular ring and are fixedly provided with a plurality of first positioning rods (18) uniformly distributed on the outer wall, and the inner wall of the mounting ring (15) is provided with a plurality of second sliding grooves (21) used in cooperation with the first positioning rods (18).

4. The laparoscopic stomach wall biopsy forceps according to claim 3, wherein, The outer wall of the fixed ring (13) is integrally formed with a plurality of second positioning rods (19), and the inner wall of the sliding sleeve (14) is provided with a plurality of first sliding grooves (20) used in cooperation with the second positioning rods (19).

5. The laparoscopic stomach wall biopsy forceps according to claim 3, wherein The outer wall of the fixed pipe (1) is fixedly provided with a limit ring (12) for limiting the limit hoop (11).

6. The laparoscopic stomach wall tissue biopsy forceps according to claim 1, wherein, The biopsy forceps comprise a forceps frame (6) which is threadedly connected to one end of a rotating tube (5), a connecting tube (25) is slidingly connected in the forceps frame (6), the connecting tube (25) is inserted into and in interference fit with the second pull rod (9), first and second forceps heads (26, 27) are rotatably connected between the two sides of the forceps frame (6), the first and second forceps heads (26, 27) are coaxially rotatable and are rotatably connected with the connecting tube (25) through connecting rods (30).

7. The laparoscopic stomach wall biopsy forceps according to claim 6, wherein, A plurality of limiting cavities (31) are integrally formed in the inside of the second forceps head (27), limiting rods (28) are fixed at the four corners of the limiting cavities (31), the end portions of the limiting rods (28) are towards the center of the limiting cavities (31), a plurality of jacks (29) are integrally formed in the inside of the first forceps head (26), and the jacks (29) correspond to the limiting cavities (31).

8. The laparoscopic stomach wall biopsy forceps according to claim 1, wherein, The first handle (2) and the second handle (3) are fixed with a V-shaped elastic sheet (4) through bolts.

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