Polyp resection device for digestive endoscopy

Abstract

The polyp resection device comprises a grab handle shell, a plastic pipe is fixedly installed on one side of the grab handle shell, a clamping electric coagulation assembly is installed in the grab handle shell and the plastic pipe, a cutting assembly is installed in the grab handle shell and the plastic pipe, an external display inserting opening is fixedly formed in the top of the grab handle shell, and an external display inserting opening is fixedly formed in the top of the external display inserting opening. An endoscope is fixedly installed at the end, away from the grab handle shell, of the plastic pipe. By adopting the operation logic of firstly coagulating and then cutting, double safety guarantees are provided for the operation process: on one hand, the pre-coagulation treatment eliminates the bleeding hidden danger during cutting, ensures that the operation view is always clear, is convenient for medical personnel to accurately control the cutting position and depth, and avoids mistaken cutting or residue caused by the fuzzy view, and on the other hand, the pre-coagulation treatment is convenient for the medical personnel to accurately control the cutting position and depth. Due to the stable blood coagulation effect, the number of times of hemostasis operation in an operation is reduced, the operation time is shortened, the risk of complications such as infection and pain caused by long-time operation of a patient is reduced, and meanwhile the operation pressure of medical staff is relieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a polyp resecting device for digestive endoscopy. BACKGROUND

[0002] Gastrointestinal polyps are the general term for the protruding lesions of the mucosa of the digestive tract. According to the different base shapes, it is often divided into Yamada types, including the type (wide base), type I (without peduncle), type III (sub-peduncle) and type IV (with peduncle). For peduncle polyps, the slender peduncle often contains a relatively thick nutrient blood vessel, which makes it have the highest risk of intraoperative and postoperative bleeding among all Yamada types. During the resection process, improper handling of the blood vessels in the peduncle may cause rapid bleeding, instant visual obscuration, making subsequent hemostasis operation extremely difficult, and even may be forced to be converted into surgical operation.

[0003] Endoscopists usually use a snare to enclose the peduncle and perform resection by high-frequency electrocoagulation and electrocision. However, when directly snaring and resecting the polyp, a simple cable may not be able to effectively coagulate the thick peduncle blood vessels, which is the main cause of postoperative delayed bleeding. In order to avoid the risk of bleeding, preventive measures are often used in clinical practice, such as using metal clips to clamp the peduncle before or after snaring resection, or pre-coagulating the peduncle. Although these methods are effective, they have brought new problems. The use of multiple metal clips significantly increases the cost of consumables for a single operation. Secondly, the operation complexity is improved, and the snare needs to be removed during the operation, and the hemostatic metal clip instrument needs to be exchanged, which prolongs the operation time. SUMMARY

[0004] The purpose of the present application is to provide a polyp resecting device for digestive endoscopy to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a polyp resecting device for digestive endoscopy, comprising a handle shell, a plastic tube is fixedly installed on one side of the handle shell, a clamping and coagulating assembly is installed inside the handle shell and the plastic tube, a cutting assembly is installed inside the handle shell and the plastic tube, an external display socket is fixedly installed on the top of the handle shell, and an endoscope is fixedly installed on the end of the plastic tube away from the handle shell.

[0006] Preferably, the cutting assembly comprises a spiral spring push rod, the spiral spring push rod is slidingly installed inside the end of the plastic tube, a connecting seat is fixedly installed on one end of the spiral spring push rod, a fixing sleeve is fixedly installed on both ends of the connecting seat, a fixing column is fixedly installed inside the fixing sleeve, and a cutting steel wire is fixedly installed on the opposite side of the fixing column.

[0007] Preferably, one end of the helical spring push rod away from the connecting base is rotatably installed with a connecting rod, one end of the connecting rod away from the connecting base is fixedly installed with a threaded rod, the outer side of the threaded rod is threadedly connected with an internally threaded ring, one end of the threaded rod away from the connecting rod is fixedly installed with a hand knob, and the internally threaded ring is fixedly installed on one side of the handle shell.

[0008] Preferably, the clamping and coagulating assembly comprises two clamping plates, the opposite sides of the two clamping plates are fixedly installed with clamping strips, one end of the two clamping plates is fixedly installed with a clamping sliding block, the inside of the clamping sliding block is slidably installed with a limiting sliding rod, the outer side of both ends of the limiting sliding rod is sleevedly installed with a reset spring, both ends of the reset spring are fixedly connected with the inner wall of the plastic tube and one side of the clamping sliding block, and one end of the two clamping sliding blocks away from the clamping plate is fixedly connected with a pull rope.

[0009] Preferably, the inside of the handle shell is rotatably installed with a rotating roller, the outer side of the rotating roller is fixedly installed with a rope winding roller, the outer side of the rotating roller is fixedly installed with a rotating gear, one end of the pull rope away from the clamping sliding block is fixedly connected with the outer side of the rope winding roller, the inside of the handle shell is fixedly installed with a guide column, and the pull rope is slidably installed on the outer side of the guide column.

[0010] Preferably, one side of the handle shell is fixedly installed with two limiting blocks, the inside of the two limiting blocks is slidably installed with a pressing key, one side of the pressing key is fixedly installed with a rack, and the outer side of the rack is engaged with the outer side of the rotating gear.

[0011] Preferably, the inside of the two limiting blocks is provided with a moving sliding groove, the top and bottom of the pressing key are fixedly installed with a moving sliding plate, and the moving sliding plate is slidably installed in the inside of the moving sliding groove.

[0012] Preferably, the inside of the moving sliding groove is fixedly installed with a limiting sliding column, the moving sliding plate is slidably sleevedly installed on the outer side of the limiting sliding column, the outer side of the limiting sliding column is sleevedly installed with a reset spring, and both ends of the reset spring are fixedly connected with one side of the moving sliding plate and the inside of the moving sliding groove.

[0013] Preferably, one side of the plastic tube is provided with a clamping sliding groove, the two clamping sliding blocks are slidably installed on the inside of the clamping sliding groove, and a blocking elastic band is installed between the two moving sliding plates and between the moving sliding plate and the clamping sliding groove.

[0014] Preferably, the endoscope is connected with the external insertion port through a wire.

[0015] Compared with the prior art, the beneficial effects of the present application are: by setting the clamping bars close to each other, the root position of the polyp is mechanically clamped, the pedicle of the pedunculated polyp is clamped, the blood vessels of the pedicle are preliminarily squeezed and closed, the blood flow rate in the blood vessels is reduced, favorable conditions are created for subsequent electrocoagulation hemostasis operation, and the opposite side of the clamping bar is also provided with an electrocoagulation bar, which can also be electrocoagulated at the clamping position, which can effectively avoid the risk of massive bleeding of the pedicle blood vessels in the subsequent polyp cutting process, ensure the safety of the operation, and the coagulation process has precise targeting, only acts on the target blood vessel area of the polyp pedicle, and will not cause damage to the surrounding normal mucosa, which not only ensures the reliability of the coagulation effect, but also takes into account the safety of the tissue; In addition, the operation logic of coagulating blood first and then cutting provides double safety protection for the operation process: on the one hand, the pre-coagulation treatment eliminates the bleeding risk during cutting, ensures that the operation field is always clear, and facilitates the accurate control of the cutting position and depth by medical staff, avoids mis-cutting or residual due to blurred vision, on the other hand, the stable coagulation effect reduces the number of intraoperative hemostasis operations, shortens the operation time, reduces the risk of complications such as infection and pain caused by long-term operation of patients, and also reduces the operation pressure of medical staff, further improves the safety and controllability of the overall operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present application.

[0017] Figure 2 It is a schematic diagram of the three-dimensional appearance structure of the present application. Figure 1

[0018] Figure 3 It is another perspective schematic diagram of the three-dimensional structure of the present application.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the handle shell of the present application.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the handle shell of the present application. Figure 4

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the handle shell of the present application.

[0022] Figure 7 It is a schematic diagram of the local explosion structure of the present application.

[0023] ​​In the diagram: 1. Handle housing; 2. Plastic tube; 3. Press button; 4. Limit block; 5. Hand knob; 6. External display socket; 7. Rack; 8. Moving slide; 9. Moving slide plate; 10. Return spring 1; 11. Limiting slide post; 12. Threaded rod; 13. Clamping plate; 14. Internal threaded ring; 15. Pull rope; 16. Connecting rod; 17. Helical spring push rod; 18. Guide post; 19. Clamping slider; 20. Limiting slide rod; 21. Return spring; 22. Clamping bar; 23. Fixing sleeve; 24. Cutting wire; 25. Fixing post; 26. Connecting seat; 27. Endoscope; 28. Clamping slide; 29. ​​Sealing elastic band; 30. Rotating gear; 31. Rope winding roller; 32. Rotating roller. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-7This invention provides a technical solution: a polyp removal device for digestive endoscopy, comprising a handle shell 1, a plastic tube 2 fixedly installed on one side of the handle shell 1, the plastic tube 2 being flexible and bendable, and a clamping electrocoagulation assembly installed inside the handle shell 1 and the plastic tube 2, the clamping electrocoagulation assembly comprising two clamping plates 13, clamping strips 22 fixedly installed on opposite sides of the two clamping plates 13, and clamping sliders 19 fixedly installed at one end of each of the two clamping plates 13, with limiting rods 20 slidably installed inside each clamping slider 19, and return springs 21 sleeved on the outer sides of both ends of the limiting rods 20, the two ends of the return springs 21 respectively contacting the inner wall of the plastic tube 2 and the clamping strips 22. One side of the closing slider 19 is fixedly connected. Pull ropes 15 are fixedly connected to the ends of both closing sliders 19 away from the clamping plate 13. A rotating roller 32 is rotatably mounted inside the handle shell 1. A rope winding roller 31 is fixedly mounted on the outside of the rotating roller 32. A rotating gear 30 is fixedly mounted on the outside of the rotating roller 32. The end of the pull rope 15 away from the closing slider 19 is fixedly connected to the outside of the rope winding roller 31. A guide post 18 is fixedly mounted inside the handle shell 1, and the pull rope 15 is slidably mounted on the outside of the guide post 18. Two limiting blocks 4 are fixedly mounted on one side of the handle shell 1. A pressing button 3 is slidably mounted inside the two limiting blocks 4. A rack 7 is fixedly mounted on one side of the pressing button 3. The outer side of strip 7 meshes with the outer side of rotating gear 30. A clamping groove 28 is provided on one side of the plastic tube 2, and two clamping sliders 19 are slidably installed on the inner side of the clamping groove 28. A sealing elastic band 29 is installed between the two moving slide plates 9 and between the moving slide plate 9 and the clamping groove 28. A cutting assembly is installed inside the handle shell 1 and the plastic tube 2. The cutting assembly includes a helical spring push rod 17. The helical spring push rod 17 is a helical spring that can be bent or pushed according to the plastic tube 2. The helical spring push rod 17 is slidably installed inside the end of the plastic tube 2. A connecting seat 26 is fixedly installed at one end of the helical spring push rod 17. Both ends of 26 are fixedly installed with fixing sleeves 23. Fixing posts 25 are fixedly installed inside the fixing sleeves 23. Cutting wires 24 are fixedly installed on the opposite side of the fixing posts 25. A connecting rod 16 is rotatably installed at the end of the spiral spring push rod 17 away from the connecting seat 26. A threaded rod 12 is fixedly installed at the end of the connecting rod 16 away from the connecting seat 26. An internal threaded ring 14 is threadedly connected to the outside of the threaded rod 12. A hand knob 5 is fixedly installed at the end of the threaded rod 12 away from the connecting rod 16. The internal threaded ring 14 is fixedly installed on one side of the handle shell 1. An external display port 6 is fixedly installed on the top of the handle shell 1. An endoscope 27 is fixedly installed at the end of the plastic tube 2 away from the handle shell 1.

[0026] The working principle of the above technical solution is as follows: During use, the plastic tube 2 can be inserted into the patient's body at the location where the polyp needs to be removed. The endoscope 27 allows medical staff to easily observe the position of the clamp 13 and the polyp. Medical staff can adjust the two clamps 13 to be positioned outside the polyp stalk, then press the pressing button 3. The pressing button 3 slides between the two limiting blocks 4, thereby moving the rack 7, which in turn rotates the rotating gear 30, causing the rope roller 31 to rotate and wind up the pull rope 15. This pull rope 15 then pulls the two clamping sliders 19 closer together, bringing the two clamps 13 closer together and the two clamping bars 22 closer together, mechanically clamping the base of the polyp and removing the pedunculated polyp. The pedicle of the polyp is clamped. This mechanical clamping method can firmly bind the pedicle of the polyp from a physical level. It can fix the position of the polyp and prevent it from shifting or shaking during subsequent cutting operations, ensuring the accuracy of the cutting action. At the same time, it can also form a preliminary compression and closure effect on the blood vessels of the pedicle, reducing the blood flow velocity in the blood vessels and creating favorable conditions for subsequent electrocoagulation hemostasis. Moreover, an electrocoagulation strip is also installed on the opposite side of the clamping strip, which can also electrocoagulate the clamped position. While the mechanical clamping is completed, the electrocoagulation function can be started immediately. The high-frequency current released by the electrocoagulation strip can be precisely applied to the pedicle tissue and blood vessels at the clamped position. The thermal effect generated by the high-frequency current can cause the collagen fibers of the blood vessel wall to denature, contract, and fuse rapidly, achieving permanent closure of the blood vessel lumen.Simultaneously, the electric current can also promote platelet aggregation and thrombus formation in the local blood, further enhancing the hemostatic effect. This effectively avoids the risk of massive bleeding from the pedicle vessels during subsequent polyp removal. Mechanical clamping and electrocoagulation are used to clamp and electrocoagulate the polyp pedicle, ensuring surgical safety. The coagulation process is precisely targeted, acting only on the target blood vessel area of ​​the polyp pedicle without damaging surrounding normal mucosal tissue. This ensures both the reliability of the coagulation effect and the safety of the tissue. Afterwards, turning the hand knob 5 rotates the threaded rod 12 within the internal threaded ring 14, which in turn moves the helical spring push rod 17 via the connecting rod 16. This, in turn, moves the cutting wire 24 through the connecting seat 26, fixing sleeve 23, and fixing column 25, achieving precise cutting of the electrocoagulated polyp pedicle and thus achieving the surgical goal of polyp removal. The entire operation requires no complex instruments, the steps are simple and easy to understand, and the operation is convenient and efficient, reducing the burden on medical staff. The operation, with its logic of pre-coagulation followed by cutting, provides dual safety guarantees for the surgical process: Firstly, pre-coagulation eliminates the risk of bleeding during cutting, ensuring a clear surgical field and facilitating precise control of the cutting position and depth by medical staff, avoiding accidental cutting or residue due to blurred vision. Secondly, stable coagulation reduces the number of hemostasis procedures during surgery, shortens the operation time, and lowers the risk of complications such as infection and pain caused by prolonged surgery. It also reduces the operational burden on medical staff, further enhancing the overall safety and controllability of the surgery. Furthermore, after the resection is completed, releasing the pressure button 3 allows the two clamping sliders 19 to move away from each other under the elastic force of the reset spring 21, thus resetting the two clamping plates 13. This reset design allows the device to quickly switch to a ready-to-use state, facilitating continuous resection of other polyps in the patient's body, effectively improving surgical efficiency, reducing operation time, and minimizing surgical trauma and recovery time for the patient.

[0027] In another implementation scheme, such as Figures 1-7 As shown, the two limiting blocks 4 have movable sliding grooves 8 inside. The top and bottom of the pressing key 3 are fixedly installed with movable sliding plates 9. The movable sliding plates 9 are slidably installed inside the movable sliding grooves 8. The movable sliding grooves 8 are fixedly installed with limiting sliding columns 11. The movable sliding plates 9 are slidably sleeved on the outside of the limiting sliding columns 11. The outside of the limiting sliding columns 11 is sleeved with a return spring 10. The two ends of the return spring 10 are fixedly connected to one side of the movable sliding plate 9 and the inside of the movable sliding groove 8, respectively.

[0028] When the pressing button 3 moves between the two limiting blocks 4, it can cause the movable slide plate 9 to move inside the movable slide groove 8, thereby causing the movable slide plate 9 to move outside the limiting slide post 11 and press the reset spring 10. When the pressing button 3 is released, the pressing button 3 can be reset under the action of the elastic force of the reset spring 10, making it convenient for the next use.

[0029] In another implementation scheme, such as Figures 1-7 As shown, the endoscope 27 is connected to the external display port 6 via a wire.

[0030] An external display device can be connected via the connecting rod 16. The patient's internal condition captured by the endoscope 27 can be displayed on the external display device, making it convenient for medical staff to observe the patient's internal condition.

[0031] Working principle: During use, the plastic tube 2 is inserted into the patient's body at the location where the polyp needs to be removed. The endoscope 27 allows medical staff to easily observe the position of the clamps 13 and the polyp. Medical staff can adjust the two clamps 13 to be positioned outside the polyp stalk, then press the pressing button 3. The pressing button 3 slides between the two limiting blocks 4, thereby moving the rack 7, which in turn rotates the rotating gear 30, causing the rope roller 31 to rotate and wind up the pull rope 15. This pull rope 15 pulls the two clamping sliders 19, bringing them closer together. This, in turn, brings the two clamps 13 closer together, and the two clamping bars 22 closer together, mechanically clamping the base of the polyp and securing the stalk of the polyp. The clamping method physically binds the polyp stalk, fixing its position and preventing displacement or movement during subsequent cutting, ensuring precision. It also creates initial compression closure of the blood vessels at the stalk, reducing blood flow and creating favorable conditions for subsequent electrocoagulation. Furthermore, an electrocoagulation strip is installed on the opposite side of the clamping strip 22, allowing for electrocoagulation of the clamped area. Simultaneously with mechanical clamping, the electrocoagulation function can be activated immediately. The high-frequency current released by the electrocoagulation strip precisely targets the stalk tissue and blood vessels at the clamped location. The thermal effect of the high-frequency current causes rapid denaturation, contraction, and fusion of the collagen fibers in the blood vessel wall, achieving permanent closure of the blood vessel lumen.Simultaneously, the current can also promote the aggregation of platelets in the local blood and form a thrombus, further enhancing the hemostatic effect. This effectively avoids the risk of massive bleeding from the pedicle vessels during subsequent polyp removal. Mechanical clamping and electrocoagulation are used to clamp and electrocoagulate the pedicle of the polyp, ensuring surgical safety. The coagulation process is precisely targeted, acting only on the target vascular area of ​​the polyp pedicle without damaging the surrounding normal mucosal tissue. This ensures both the reliability of the coagulation effect and the safety of the tissue. Afterwards, the hand knob 5 can be turned to rotate the threaded rod 12 inside the internal threaded ring 14, thereby allowing the connecting rod 1 to... 6. The spiral spring push rod 17 is moved, which in turn moves the cutting wire 24 through the connecting seat 26, fixing sleeve 23, and fixing column 25. This allows for precise cutting of the polyp stalk that has undergone electrocoagulation, thus achieving the surgical goal of polyp removal. The entire operation requires no complex instruments, the steps are simple and easy to understand, and it is convenient and efficient, reducing the operational difficulty for medical staff. The pre-coagulation and pre-cutting logic provides double safety for the surgical process: firstly, the pre-coagulation treatment eliminates the risk of bleeding during cutting, ensuring a clear surgical field at all times, facilitating precise control of the cutting position and depth by medical staff, and avoiding complications due to blurred vision. This design avoids accidental cutting or residual tissue. On the other hand, the stable coagulation effect reduces the number of intraoperative hemostasis operations, shortens the operation time, and reduces the risk of complications such as infection and pain caused by prolonged surgery. It also reduces the operational pressure on medical staff, further improving the overall safety and controllability of the surgery. In addition, after the resection is completed, the pressure button 3 can be released. Under the elastic force of the reset spring 21, the two clamping sliders 19 can move away from each other, thereby resetting the two clamping plates 13. The reset design allows the device to quickly switch to the standby state, facilitating continuous resection of other polyps in the patient's body by medical staff, effectively... This improves surgical efficiency, reduces surgical time, and minimizes surgical trauma and recovery time for patients. When the pressing button 3 moves between the two limiting blocks 4, it allows the moving slide plate 9 to move inside the moving slide groove 8, thereby moving the moving slide plate 9 outside the limiting slide post 11 and compressing the return spring 10. When the pressing button 3 is released, the return spring 10 allows the pressing button 3 to reset, facilitating future use. An external display device can be connected via the connecting rod 16, allowing the patient's internal condition captured by the endoscope 27 to be displayed on the external display device, facilitating observation of the patient's internal condition by medical staff.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyp snare for digestive endoscopy comprising a handle housing (1), characterized in that: The side of the handle shell (1) is fixedly installed with a plastic tube (2), the inside of the handle shell (1) and the plastic tube (2) is installed with a clamping and closing electrocoagulation assembly, the inside of the handle shell (1) and the plastic tube (2) is installed with a cutting assembly, the top of the handle shell (1) is fixedly installed with an external display socket (6), and the end of the plastic tube (2) away from the handle shell (1) is fixedly installed with an endoscope (27).

2. The snare for use in a digestive endoscope according to claim 1, characterized by: The cutting assembly comprises a spiral spring push rod (17), the inside of the end of the plastic tube (2) is slidably installed with the spiral spring push rod (17), one end of the spiral spring push rod (17) is fixedly installed with a connecting seat (26), both ends of the connecting seat (26) are fixedly installed with a fixed sleeve (23), the inside of the fixed sleeve (23) is fixedly installed with a fixed column (25), and the opposite sides of the fixed column (25) are fixedly installed with a cutting steel wire (24).

3. The snare for use in a digestive endoscope according to claim 2, characterized by: The end of the spiral spring push rod (17) away from the connecting seat (26) is rotatably installed with a connecting rod (16), the end of the connecting rod (16) away from the connecting seat (26) is fixedly installed with a threaded rod (12), the outer side of the threaded rod (12) is threadedly connected with an internal thread ring (14), the end of the threaded rod (12) away from the connecting rod (16) is fixedly installed with a hand knob (5), and the internal thread ring (14) is fixedly installed on one side of the handle shell (1).

4. The snare for use in a digestive endoscope according to claim 3, characterized by: The clamping and closing electrocoagulation assembly comprises two clamping plates (13), the opposite sides of the two clamping plates (13) are fixedly installed with clamping and closing strips (22), one end of the two clamping plates (13) is fixedly installed with a clamping and closing sliding block (19), the inside of the clamping and closing sliding block (19) is slidably installed with a limiting sliding rod (20), the outer sides of the two ends of the limiting sliding rod (20) are sleevedly installed with return springs (21), the two ends of the return springs (21) are fixedly connected with the inner wall of the plastic tube (2) and one side of the clamping and closing sliding block (19), and the end of the two clamping and closing sliding blocks (19) away from the clamping plates (13) is fixedly connected with a pull rope (15).

5. The snare for use in a digestive endoscope according to claim 4, wherein: The inside of the handle shell (1) is rotatably installed with a rotating roller (32), the outer side of the rotating roller (32) is fixedly installed with a rope winding roller (31), the outer side of the rotating roller (32) is fixedly installed with a rotating gear (30), the end of the pull rope (15) away from the clamping and closing sliding block (19) is fixedly connected with the outer side of the rope winding roller (31), and the inside of the handle shell (1) is fixedly installed with a guide column (18), and the pull rope (15) is slidably installed on the outer side of the guide column (18).

6. The snare for use in a digestive endoscope according to claim 5, wherein: One side of the handle shell (1) is fixedly installed with two limiting blocks (4), the inside of the two limiting blocks (4) is slidably installed with a pressing key (3), one side of the pressing key (3) is fixedly installed with a rack (7), and the outer side of the rack (7) is engaged with the outer side of the rotating gear (30).

7. The snare for use in a digestive endoscope according to claim 6, wherein: The inside of the two limiting blocks (4) is provided with a moving sliding groove (8), and the top and bottom of the pressing key (3) are fixedly installed with a moving sliding plate (9), and the moving sliding plate (9) is slidably installed in the inside of the moving sliding groove (8).

8. The snare for use in a digestive endoscope according to claim 7, characterized by: The inside of the mobile sliding groove (8) is fixedly installed with a limiting slide column (11), the mobile sliding plate (9) is slidably sleeved on the outside of the limiting slide column (11), the outside of the limiting slide column (11) is sleeved with a reset spring (10), and the two ends of the reset spring (10) are fixedly connected with one side of the mobile sliding plate (9) and the inside of the mobile sliding groove (8) respectively.

9. The snare for use in a digestive endoscope according to claim 8, wherein: The plastic pipe (2) is provided with a clamping sliding groove (28) on one side, two clamping sliding blocks (19) are slidably installed on the inside of the clamping sliding groove (28), and the two mobile sliding plates (9) and the mobile sliding plate (9) and the clamping sliding groove (28) are provided with blocking elastic bands (29).

10. The snare for use in a digestive endoscope according to claim 9, characterized by: The endoscope (27) is connected with the external display socket (6) through a wire.

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