Endoscopic biopsy forceps facilitating sampling

Abstract

The invention relates to the technical field of medical instruments, and discloses endoscopic biopsy forceps convenient for sampling, which comprise a supporting sleeve and a drawing wire, one end of the supporting sleeve is connected with a flexible tail tube through a connecting hose, the drawing wire penetrates through the supporting sleeve and the connecting hose and extends into the flexible tail tube, and the flexible tail tube is connected with the supporting sleeve. A first pull ring is fixed to one end of the drawing wire, the other end of the drawing wire is rotationally connected with an incomplete gear, a gripper arm is fixed to one side of the incomplete gear, an adjusting mechanism is fixed to the front side of the handle, and the adjusting mechanism penetrates through the side wall of the supporting sleeve and is connected with the outer wall of the flexible tail pipe. According to the endoscopic biopsy forceps convenient to sample, the winding drums can be used for winding the pull ropes, the number of the winding drums is four, the tail ends of the four pull ropes are located on the periphery of the flexible tail pipe, when the rotary knob is held by hand to rotate the rotary sleeve and the rotary shaft, the corresponding winding drums rotate, the corresponding pull ropes pull the flexible tail pipe, the direction of the flexible tail pipe is convenient to adjust, and flexible and accurate sampling is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to an endoscopic biopsy forceps which is convenient for sampling. Background Art

[0002] Biopsy forceps are an indispensable tool for obtaining pathological specimens during endoscopic examination. In hospitals, it is often necessary to use endoscopic biopsy forceps to obtain samples from tissues surrounding the inner wall of human cavities (such as bile duct, esophagus, cardia, pylorus, intestine, etc.) under endoscopic surveillance.

[0003] After extensive searching, it is found that the typical endoscopic biopsy forceps in the prior art are disclosed in publication number CN118058775A, an endoscopic surgical biopsy forceps device, which relates to the field of medical device technology, including a manipulation handle, a flexible support sleeve, a clamp head assembly, and a magnetic adjustment assembly. By designing a clamping mechanism composed of three alloy claws, and relying on the elasticity of the alloy claws themselves, when the alloy claws extend out of the cylindrical shell, the clamping space formed by the clamping parts of the three alloy claws increases, and the outer side of the alloy claws is squeezed by the port of the cylindrical shell. When the alloy claws enter the inside of the cylindrical shell, the clamping space formed by the clamping parts of the three alloy claws is reduced, thereby facilitating the control of the clamping operation, so that the user can use the manipulation handle for simple manipulation.

[0004] After a massive search again, it is found that the typical endoscopic biopsy forceps in the prior art are disclosed in publication number CN113974704A, a biopsy forceps and an endoscopic surgical device, which relate to the field of medical device technology. The biopsy forceps include a handle and a forceps head located at the end of the handle, the forceps head includes a forceps cup, the handle includes a hollow core rod and a slider for sliding on the core rod to drive the forceps cup to open or clamp, and a booster assembly is arranged in the core rod; the booster assembly includes a first booster tube, a force relief elastic member, and a second booster tube. When in use, the first booster tube is driven to move by controlling the sliding of the slider, and then the second booster tube is driven to move by the force relief elastic member, so that the forceps cup is opened or clamped by driving the forceps head to move. When the control slider moves in a direction away from the forceps head, the deformation of the force relief elastic member is used to achieve the effect of force relief, so that the force of the force relief elastic member on the second booster tube remains unchanged, and the connection points of the forceps head can be protected from damage when a large force is used, ensuring that the forceps head is pushed flexibly while also keeping the bite force of the forceps head constant.

[0005] After massive searches again, it was found that the typical endoscopic biopsy forceps in the prior art are such as authorization number CN112294373B, an endoscopic biopsy forceps that is convenient for sampling, including a main tube, which is a hollow cylindrical structure, and the left and right ends of the main tube are open. The top and bottom of one end of the outer wall of the main tube are respectively fixedly installed with slave connecting blocks. By holding the main tube, the blade is inserted into the sampling tube and the position of the blade is adjusted until the blade contacts the squeezed tissue to be sampled. Put your fingers on the grip ring, hold the main tube and push the grip ring in the direction of the sampling tube. The grip ring pushes the stretching rod, and the stretching rod pushes the sliding column, so that the slave slider slides on the slave slide groove, and then pushes the main connecting strip to move outward. The movement of the main connecting strip pushes the two slave connecting strips to move outward, and then the two blades are opened, and the grip ring is pulled again to close the two blades. Such repeated pushing and pulling of the grip ring causes the tissue to be sampled to be cut off, so that the tissue to be sampled can be easily cut off.

[0006] The clamp heads of existing endoscopic biopsy forceps usually open toward the front, so the biopsy forceps can only clamp samples upstream of the tissue, with a limited range of motion. When the biopsy forceps have a small movable gap, the clamp heads cannot open under the pressure of the tissue, and thus the diseased tissue cannot be taken forward. If the direction needs to be adjusted, the entire endoscopic biopsy forceps needs to be moved, which increases the destructiveness and the sampling operation is not flexible and accurate enough. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0007] The object of the present invention is to provide an endoscopic biopsy forceps that is convenient for sampling, so as to solve the problem that the clamp head of the existing endoscopic biopsy forceps mentioned in the above background technology is usually opened toward the front, so that the biopsy forceps can only clamp samples upstream of the tissue, the range of movement is limited, the movable gap of the biopsy forceps is very small, and the clamp head cannot be opened under the pressure of the tissue, so that the diseased tissue cannot be taken forward. If the direction needs to be adjusted, the entire endoscopic biopsy forceps needs to be moved, which will increase the destructiveness and the sampling operation is not flexible and accurate enough.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an endoscopic biopsy forceps for easy sampling, comprising a supporting sleeve and a pulling wire, a handle is fixed to the outside of the supporting sleeve, one end of the supporting sleeve is connected to the flexible tail tube through a connecting hose, the pulling wire passes through the supporting sleeve and the connecting hose and extends into the flexible tail tube, a first pull ring is fixed to one end of the pulling wire, and an incomplete gear is rotatably connected to the other end of the pulling wire, a clamp claw is fixed to one side of the incomplete gear, an adjustment mechanism is fixed to the front side of the handle, the adjustment mechanism passes through the side wall of the supporting sleeve and is connected to the outer wall of the flexible tail tube.

[0009] Preferably, a first groove is formed at the other end of the drawn wire, and a tension spring is fixed in the first groove; a movable plate is fixed at one end of the tension spring, and the movable plate is slidably connected in the first groove.

[0010] By adopting the above technical solution, the tension spring can assist the movable plate in resetting.

[0011] Preferably, four tooth plates are fixed on one side of the movable plate, and the incomplete gears are meshedly connected to the outer sides of the tooth plates.

[0012] By adopting the above technical solution, the tooth plate can drive the incomplete gear to rotate when it moves left and right.

[0013] Preferably, the adjustment mechanism includes a support plate, and the support plate is fixed on the front side of the handle, a second groove is opened on the support plate, four rotating shafts are rotatably connected in the second groove, and the four rotating shafts are connected to the support plate through a spiral spring.

[0014] By adopting the above technical solution, the scroll spring can assist the shaft in resetting.

[0015] Preferably, a slide groove is provided in the rotating shaft, and a limit rod is slidably connected in the slide groove, a rotating sleeve is fixed to one end of the limit rod, and the rotating sleeve is slidably connected to the outer side of the rotating shaft.

[0016] By adopting the above technical solution, the limiting rod plays a limiting role in the process of the rotating sleeve moving left and right.

[0017] Preferably, a friction sleeve is fixed in the slide groove, and the friction sleeve is arranged in a one-to-one correspondence with the rotating sleeve, and a knob is fixed on one side of the rotating sleeve.

[0018] By adopting the above technical solution, there is a certain friction between the friction sleeve and the rotating sleeve, which can effectively prevent the rotating sleeve from rotating.

[0019] Preferably, a compression spring is fixed in the second groove, and a movable frame is fixed to one end of the compression spring, and the movable frame passes through one side of the support plate and is connected to the second pull ring.

[0020] By adopting the above technical solution, the compression spring can assist the movable frame in resetting.

[0021] Preferably, four extrusion collars are fixed on the outer side of the movable frame, and the extrusion collars are sleeved on the outer side of the rotating shaft, and a ball is movably connected to one side of the extrusion collars.

[0022] By adopting the above technical solution, when the extrusion sleeve moves to the left, it will squeeze the rotating sleeve to move to the left.

[0023] Preferably, a winding drum is fixed at one end of each of the rotating shafts, and a guide wheel is rotatably connected to the other side of the support plate. A pull rope is wound around the outside of each of the winding drums, and the pull rope on one of the winding drums passes around the guide wheel. The four pull ropes all pass through the side wall of the support sleeve and are connected to the outer wall of the flexible tail tube.

[0024] By adopting the above technical solution, the flexible tail pipe can be driven to deflect in different directions by pulling different pull ropes.

[0025] Compared with the prior art, the above technical solution has the following beneficial effects: The endoscopic biopsy forceps which are convenient for sampling can achieve the purpose of stretching and opening at the same time by using the supporting sleeve, handle, flexible tail tube, drawing wire, first pull ring, movable plate, tooth plate, incomplete gear and clamp claw in coordination with each other. After the supporting sleeve is inserted into the human body, the handle can be held to use the device. When the first pull ring is held to push the drawing wire, the incomplete gear and the clamp claw move to the right and leave the flexible tail tube, the movable plate and tooth plate automatically bounce to the right, the incomplete gear and the clamp claw rotate, and the clamp claw automatically opens when the clamp claw is extended. When the first pull ring is held to pull the drawing wire, the clamp claw closes and retracts into the flexible tail tube for easy storage.

[0026] 2. The endoscopic biopsy forceps which are convenient for sampling can achieve the purpose of flexibly adjusting the direction for precise sampling through the coordinated use of the flexible tail tube, rotating shaft, rotating sleeve, knob, winding drum and pull rope. The winding drum can be used to wind up the pull rope. There are four winding drums, and the ends of the four pull ropes are respectively located around the flexible tail tube. When the knob is held and the rotating sleeve and the rotating shaft are rotated, the corresponding winding drum rotates, and the corresponding pull rope pulls the flexible tail tube, which facilitates the adjustment of the direction of the flexible tail tube for flexible and precise sampling.

[0027] 3. The endoscopic biopsy forceps which is convenient for sampling can achieve the purpose of rapid resetting by the coordinated use of the flexible tail tube, the clamp claw, the rotating shaft, the rotating sleeve, the friction sleeve, the knob, the movable frame, the second pull ring and the sleeve ring. When the direction of the flexible tail tube is adjusted by rotating different knobs, there is a certain friction between the rotating sleeve and the friction sleeve, which can effectively prevent the rotating sleeve from rotating. After completing the sampling operation and retracting the clamp claw into the flexible tail tube, the second pull ring is held by hand to pull the movable frame and the squeezing sleeve ring. The squeezing sleeve ring squeezes the rotating sleeve to move left. After the rotating sleeve leaves the friction sleeve, it will rotate with the rotating shaft, and the flexible tail tube will rebound to its original shape. Finally, the device can be withdrawn from the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 It is a right-side stereoscopic structural schematic diagram of the present invention; Figure 2 It is a left-side stereoscopic structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of a top cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the connection structure of the tension spring, the moving plate and the tooth plate of the present invention; Figure 5 It is a schematic diagram of the partial structure of the regulating mechanism of the present invention; Figure 6 It is a schematic diagram of the connection structure of the compression spring, the moving frame, the second pull ring, the extrusion sleeve ring and the ball bearing of the present invention; Figure 7 It is a schematic diagram of the connection structure of the support plate, the second groove, the rotating shaft, the limiting rod, the rotating sleeve, the friction sleeve and the moving frame of the present invention; Figure 8 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Fig. 9 For the present invention Figure 1 The enlarged structural diagram at B in the middle; Fig.10 For the present invention Figure 3 The enlarged structural diagram at C in the middle; Fig.11 For the present invention Figure 5 Enlarged structural diagram at D in the middle.

[0030] In the figure: 1. support sleeve; 2. handle; 3. connecting hose; 4. flexible tail pipe; 5. drawing wire; 6. first pull ring; 7. first groove; 8. tension spring; 9. movable plate; 10. tooth plate; 11. incomplete gear; 12. clamp claw; 13. adjustment mechanism; 1301. support plate; 1302. second groove; 1303. volute spring; 1304. rotating shaft; 1305. slide groove; 1306. limit rod; 1307. rotating sleeve; 1308. friction sleeve; 1309. knob; 1310. compression spring; 1311. movable frame; 1312. second pull ring; 1313. extrusion sleeve; 1314. ball; 1315. take-up drum; 1316. guide wheel; 1317. pull rope. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] See also Figures 1 to 11 The present invention provides a technical solution: an endoscopic biopsy forceps convenient for sampling, comprising a supporting sleeve 1 and a drawing wire 5, a handle 2 is fixed on the outer side of the supporting sleeve 1, one end of the supporting sleeve 1 is connected to the flexible tail tube 4 through a connecting hose 3, the drawing wire 5 passes through the supporting sleeve 1 and the connecting hose 3 and extends into the flexible tail tube 4, a first pull ring 6 is fixed to one end of the drawing wire 5, an incomplete gear 11 is rotatably connected to the other end of the drawing wire 5, a clamp claw 12 is fixed to one side of the incomplete gear 11, an adjusting mechanism 13 is fixed to the front side of the handle 2, the adjusting mechanism 13 passes through the side wall of the supporting sleeve 1 and is connected to the outer wall of the flexible tail tube 4.

[0033] The above working principle is: after inserting the support sleeve 1 into the human body, one hand can hold the handle 2, and the other hand can hold the first pull ring 6 to push and pull the drawing wire 5, so as to extend or retract the clamp claw 12. After the clamp claw 12 is extended from the flexible tail tube 4, the clamp claw 12 automatically opens. When the clamp claw 12 is retracted into the flexible tail tube 4, the clamp claw 12 automatically closes, which is convenient for smooth sampling. During the sampling process, the direction of the flexible tail tube 4 and the clamp claw 12 can be adjusted by manually operating the adjustment mechanism 13, which is convenient, flexible and accurate sampling.

[0034] In this embodiment, Figure 3 , Figure 4 and Fig.10 As shown, a first groove 7 is provided at the other end of the drawing wire 5, and a tension spring 8 is fixed in the first groove 7, a movable plate 9 is fixed at one end of the tension spring 8, and the movable plate 9 is slidably connected in the first groove 7, and the tension spring 8 is in a tensioned state at the beginning. When the clamp claw 12 is completely exposed from the flexible tail tube 4, the clamp claw 12 is not limited by the extrusion of the flexible tail tube 4, and the movable plate 9 will move to the right under the action of the tension spring 8.

[0035] In this embodiment, Figure 3 , Figure 4 and Fig.10 As shown, four tooth plates 10 are fixed on one side of the movable plate 9, and an incomplete gear 11 is meshedly connected to the outer side of the tooth plate 10. After the clamp claw 12 is completely exposed from the flexible tail pipe 4, the movable plate 9 automatically moves to the right, thereby driving the four tooth plates 10 to move to the right, thereby driving the incomplete gear 11 to rotate, thereby driving the clamp claw 12 to rotate and open.

[0036] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 and Fig.11 As shown, the adjustment mechanism 13 includes a support plate 1301, and the support plate 1301 is fixed on the front side of the handle 2. A second groove 1302 is opened on the support plate 1301. Four rotating shafts 1304 are rotatably connected in the second groove 1302, and the four rotating shafts 1304 are connected to the support plate 1301 through spiral springs 1303. When the rotating shaft 1304 is rotated manually, the spiral spring 1303 is twisted. After the rotating shaft 1304 is released, the rotating shaft 1304 automatically rotates and resets under the action of the spiral spring 1303.

[0037] In this embodiment, Figure 3 , Figure 5 , Figure 7 and Fig.11 As shown, a slide groove 1305 is opened in the rotating shaft 1304, and a limit rod 1306 is slidably connected in the slide groove 1305. A rotating sleeve 1307 is fixed to one end of the limit rod 1306, and the rotating sleeve 1307 is slidably connected to the outer side of the rotating shaft 1304. The limit rod 1306 plays a limiting role in the process of the rotating sleeve 1307 moving left and right. The contact part between the rotating shaft 1304 and the rotating sleeve 1307 is square, and rotating the rotating sleeve 1307 can drive the rotating shaft 1304 to rotate.

[0038] In this embodiment, Figure 3 , Figure 5 , Figure 7 and Fig.11 As shown, a friction sleeve 1308 is fixed in the slide groove 1305, and the friction sleeve 1308 is arranged one-to-one with the rotating sleeve 1307. A knob 1309 is fixed on one side of the rotating sleeve 1307. There is a certain friction between the friction sleeve 1308 and the rotating sleeve 1307. After the rotating sleeve 1307 is rotated by holding the knob 1309, the rotating sleeve 1307 will not rotate.

[0039] In this embodiment, Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, a compression spring 1310 is fixed in the second groove 1302, and a movable frame 1311 is fixed to one end of the compression spring 1310. The movable frame 1311 passes through one side of the support plate 1301 and is connected to the second pull ring 1312. When the second pull ring 1312 is held and the movable frame 1311 is pulled to the left, the compression spring 1310 is compressed. After the second pull ring 1312 is released, the movable frame 1311 will automatically pop open under the action of the compression spring 1310.

[0040] In this embodiment, Figure 3 , Figure 5 and Fig.11 As shown, four squeezing rings 1313 are fixed to the outside of the movable frame 1311, and the squeezing rings 1313 are placed on the outside of the rotating shaft 1304. A ball 1314 is movably connected to one side of the squeezing ring 1313. When the rotating sleeve 1307 rotates, the ball 1314 rolls, which facilitates reducing the friction between the rotating sleeve 1307 and the squeezing ring 1313. When the movable frame 1311 is pulled to the left, the four squeezing rings 1313 move to the left, thereby squeezing the four rotating sleeves 1307 to move to the left. After the rotating sleeve 1307 leaves the friction sleeve 1308, the rotating sleeve 1307 and the rotating shaft 1304 will automatically rotate under the action of the spiral spring 1303.

[0041] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, a winding drum 1315 is fixed at one end of each rotating shaft 1304, and a guide wheel 1316 is rotatably connected to the other side of the support plate 1301. A pull rope 1317 is wound around the outside of each winding drum 1315, and the pull rope 1317 on one of the winding drums 1315 passes around the guide wheel 1316. The four pull ropes 1317 all penetrate the side wall of the supporting sleeve 1 and are connected to the outer wall of the flexible tail tube 4. The rotating shaft 1304 can drive the winding drum 1315 to rotate, and a pull rope 1317 is wound around each winding drum 1315. The ends of the four pull ropes 1317 are respectively connected to the four sides of the flexible tail tube 4. When different winding drums 1315 are rotated, the pull rope 1317 will pull the flexible tail tube 4 in the corresponding direction, which is convenient for flexible adjustment of the direction of the flexible tail tube 4, making the sampling operation more flexible and accurate, and the guide wheel 1316 plays a role of supporting and guiding one of the pull ropes 1317.

[0042] The use method and advantages of the present invention: The endoscopic biopsy forceps which is convenient for sampling, the working process is as follows: like Figures 1 to 11As shown: first, the support sleeve 1 is inserted into the human body, one hand holds the handle 2, and the other hand hooks the first pull ring 6 to push and pull the drawing wire 5, so as to push the clamp claw 12 out of the flexible tail tube 4 or retract the clamp claw 12 into the flexible tail tube 4. The tension spring 8 is in a tensioned state at the beginning. After the drawing wire 5 moves right and the clamp claw 12 completely leaves the flexible tail tube 4, the moving plate 9 moves right under the action of the tension spring 8, and the four tooth plates 10 move right, thereby driving the incomplete gear 11 and the clamp claw 12 to rotate, and the four The jaws 12 are opened. After the sample is clamped by the jaws 12, the first pull ring 6 is held by hand to pull the drawing wire 5, and the drawing wire 5 moves to the left. The four jaws 12 are closed and retracted into the flexible tail tube 4. Four knobs 1309 are provided. During the sampling process, the knobs 1309 can be rotated, and the corresponding rotating sleeve 1307, the rotating shaft 1304 and the winding drum 1315 rotate. The winding drum 1315 winds up the draw rope 1317. There are four winding drums 1315, and a draw rope is wound around the outside of each winding drum 1315. 1317, the ends of the four pull ropes 1317 are distributed around the flexible tail tube 4, and different pull ropes 1317 can pull the flexible tail tube 4 to different directions, thereby flexibly adjusting the sampling direction. There is a certain friction between the friction sleeve 1308 and the rotating sleeve 1307. During the sampling process, the rotating sleeve 1307 will not rotate. Before removing the device from the human body, hold the second pull ring 1312 and pull the moving frame 1311. The four extrusion rings 1313 move with the moving frame 1311. The four rotating sleeves 1307 are squeezed and move to the left and leave the friction sleeve 1308. The rotating sleeve 1307 and the rotating shaft 1304 automatically rotate under the action of the volute spring 1303. The winding drum 1315 releases the pull rope 1317. The flexible tail tube 4 has a certain elasticity. The flexible tail tube 4 will automatically rebound and return to its original shape. Finally, the device can be removed from the human body. After that, the knob 1309 needs to be manually pushed to push the rotating sleeve 1307 back into the second groove 1302.

[0043] In summary, the endoscopic biopsy forceps that are convenient for sampling can achieve the purpose of opening while stretching, flexibly adjusting the direction for accurate sampling and rapid resetting, and meet people's usage needs.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An endoscopic biopsy forceps for convenient sampling, comprising a supporting sleeve (1) and a drawing wire (5), characterized in that: A handle (2) is fixed on the outside of the support sleeve (1), one end of the support sleeve (1) is connected to the flexible tail tube (4) through a connecting hose (3), the drawing wire (5) passes through the support sleeve (1) and the connecting hose (3) and extends into the flexible tail tube (4), one end of the drawing wire (5) is fixed with a first pull ring (6), the other end of the drawing wire (5) is rotatably connected to an incomplete gear (11), one side of the incomplete gear (11) is fixed with a clamp claw (12), and the front side of the handle (2) is fixed with an adjustment mechanism (13), the adjustment mechanism (13) passes through the side wall of the support sleeve (1) and is connected to the outer wall of the flexible tail tube (4).

2. The endoscopic biopsy forceps for convenient sampling according to claim 1, characterized in that: The other end of the drawn wire (5) is provided with a first groove (7), and a tension spring (8) is fixed in the first groove (7). A movable plate (9) is fixed at one end of the tension spring (8), and the movable plate (9) is slidably connected in the first groove (7).

3. The endoscopic biopsy forceps for convenient sampling according to claim 2, characterized in that: Four tooth plates (10) are fixed to one side of the movable plate (9), and the incomplete gear (11) is meshedly connected to the outer side of the tooth plate (10).

4. The endoscopic biopsy forceps for convenient sampling according to claim 1, characterized in that: The adjustment mechanism (13) comprises a support plate (1301), and the support plate (1301) is fixed on the front side of the handle (2), and a second groove (1302) is formed on the support plate (1301), and four rotating shafts (1304) are rotatably connected in the second groove (1302), and the four rotating shafts (1304) are all connected to the support plate (1301) via a spiral spring (1303).

5. The endoscopic biopsy forceps for convenient sampling according to claim 4, characterized in that: A sliding groove (1305) is provided in the rotating shaft (1304), and a limiting rod (1306) is slidably connected in the sliding groove (1305). A rotating sleeve (1307) is fixed to one end of the limiting rod (1306), and the rotating sleeve (1307) is slidably connected to the outside of the rotating shaft (1304).

6. The endoscopic biopsy forceps for convenient sampling according to claim 5, characterized in that: A friction sleeve (1308) is fixed in the sliding groove (1305), and the friction sleeve (1308) and the rotating sleeve (1307) are arranged in a one-to-one correspondence. A knob (1309) is fixed on one side of the rotating sleeve (1307).

7. The endoscopic biopsy forceps for convenient sampling according to claim 4, characterized in that: A compression spring (1310) is fixed in the second groove (1302), and a movable frame (1311) is fixed to one end of the compression spring (1310); the movable frame (1311) passes through one side of the support plate (1301) and is connected to the second pull ring (1312).

8. The endoscopic biopsy forceps for convenient sampling according to claim 7, characterized in that: Four extrusion rings (1313) are fixed on the outer side of the movable frame (1311), and the extrusion rings (1313) are sleeved on the outer side of the rotating shaft (1304), and a ball (1314) is movably connected to one side of the extrusion ring (1313).

9. The endoscopic biopsy forceps for convenient sampling according to claim 4, characterized in that: A winding drum (1315) is fixed to one end of each rotating shaft (1304), and a guide wheel (1316) is rotatably connected to the other side of the support plate (1301). A pull rope (1317) is wound around the outside of each winding drum (1315), and the pull rope (1317) on one of the winding drums (1315) passes around the guide wheel (1316). The four pull ropes (1317) all pass through the side wall of the support sleeve (1) and are connected to the outer wall of the flexible tail tube (4).

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