Intestinal polyp excision device

Abstract

The invention relates to the technical field of medical instruments, in particular to an intestinal polyp excision device. Comprising an outer tube, a clamping arm group, a snare wire, a first driving part and a second driving part, wherein one end of the clamping arm group is arranged in the outer tube; the snare wire penetrates through the clamping arm group; the first driving part drives the clamping arm group to act to surround the root of a polyp; two ends of the left channel respectively penetrate through two ends of the left clamping arm, and two ends of the right channel respectively penetrate through two ends of the right clamping arm; the left section of the snare wire extends out of the rear end of the left clamping arm through the left channel and then is connected with the second driving part, the right section of the snare wire extends out of the rear end of the right clamping arm through the right channel and then is connected with the second driving part, and the two ends of the snare wire extend out of the outer pipe and are electrically connected with an external high-frequency generator. The other end of the first elastic rope is fixedly connected with the middle of the snare wire. According to the scheme, the snare wire can be more quickly sleeved on the root of the polyp, the excision speed is accelerated, and the operation time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intestinal polyp removal device. Background Art

[0002] Intestinal polyps are growths that grow on the surface of tissue in the intestinal cavity. Some are benign, while others may become diseased. If intestinal polyps are large, they may block the intestines and affect defecation. Therefore, if intestinal polyps are found through colonoscopy, doctors generally recommend removal to prevent future problems. In the past, intestinal polyp removal often required open surgery. With the development of technology, most now use minimally invasive resection under colonoscopy. Specifically, the endoscope enters from the anus from the rectum to the sigmoid colon, and then to the descending colon, transverse colon and ascending colon. If polyps are found in the intestinal cavity, the intestinal polyps are removed using a snare ligation and electrocautery. The existing snare for polypectomy is operated with the assistance of an endoscope to make a snare wire with an electrocautery cutting function, which is electrically connected to an external high-frequency generator, extend out of the end of the outer tube of the snare. The annular ring formed by the snare wire that continuously extends out of the end of the outer tube continues to expand. When the annular ring formed by the snare wire is larger than the maximum diameter of the polyp, the outer tube is moved to make the snare wire move from the top of the polyp to the root of the polyp to trap the polyp. Then, the snare wire is contracted to tighten the root of the polyp to perform electrocautery removal on the polyp. Since the snare wire has a certain degree of softness and the diameter of the top of most polyps is larger than the diameter of the root of the polyp, when the environment around the polyp is relatively narrow, it is difficult to operate the snare wire to move from the top of the polyp to the root of the polyp to trap the root of the polyp, and the doctor needs to spend more time to repeatedly operate the outer tube. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an intestinal polypectomy device to solve the problem that the existing intestinal polypectomy device is difficult to cover the polyp when the environment around the polyp is relatively narrow.

[0004] In order to solve the above technical problems, a basic solution adopted by the present invention is: an intestinal polypectomy device, comprising an outer tube, a clamp arm group with one end arranged in the outer tube, a snare wire inserted through the clamp arm group, a first driving part driving the clamp arm group to move to embrace the root of the polyp, and a second driving part driving the snare wire to shrink in a direction away from the outer tube to tighten the root of the polyp;

[0005] The first driving part comprises a sliding seat arranged in the inner cavity of the outer tube near the right end of the outer tube and a first driving member driving the sliding seat to slide along the axis of the outer tube;

[0006] The clamp arm group comprises a symmetrically arranged left clamp arm and a right clamp arm, the left clamp arm and the right clamp arm are both L-shaped, the surfaces of the left clamp arm and the right clamp arm close to the inner wall of the outer tube are arc-shaped and adapted to the inner wall of the outer tube, the rear ends of the left clamp arm and the rear ends of the right clamp arm are rotatably connected to the slide seat through a rotating shaft, the front ends of the left clamp arm and the front ends of the right clamp arm extend out of the outer tube, and the rotating shafts are respectively provided with elastic members forcing the front ends of the left clamp arm and the front ends of the right clamp arm to rotate away from the axis direction of the outer tube, a left channel is provided in the left clamp arm, and the two ends of the left channel respectively pass through the two ends of the left clamp arm, and a right channel is provided in the right clamp arm, and the two ends of the right channel respectively pass through the two ends of the right clamp arm;

[0007] The left section of the snare wire extends out of the rear end of the left clamp arm through the left channel and is connected to the second driving part, the right section of the snare wire extends out of the rear end of the right clamp arm through the right channel and is connected to the second driving part, both ends of the snare wire extend out of the outer tube and are electrically connected to an external high-frequency generator, an elastic rope 1 is arranged on the slide seat, one end of the elastic rope 1 is fixedly connected to the slide seat, and the other end of the elastic rope 1 is fixedly connected to the middle part of the snare wire.

[0008] In the above scheme, the outer tube is attached to the endoscope for use, and the resection process is observed through the endoscope. When not working, the slide is away from the right end of the outer tube, and the rear ends of the left clamp arm and the right clamp arm are deeply inserted into the outer tube. Under the pressure of the inner wall of the outer tube, the front end of the left clamp arm and the front end of the right clamp arm are pressed together. When the polyp that needs to be removed is found with the movement of the endoscope, the first driving member is operated to drive the slide to slide toward the right end of the outer tube so that the left clamp arm and the right clamp arm are opened, and the endoscope is operated to drive the outer tube to move so that the opened left clamp arm and the right clamp arm are opened. The clamp arms are respectively located at both sides of the root of the polyp. The first driving member is operated to slide the slide seat away from the right end of the outer tube so that the front ends of the left clamp arm and the right clamp arm are pressed against each other to surround the root of the polyp. The second driving member is operated to move and tighten the two ends of the snare wire respectively so that the snare wire is retracted into the left channel and the right channel. The snare wire overcomes the elastic force of the elastic rope 1 and shrinks away from the right end of the outer tube to tighten the root of the polyp. At this time, the high-frequency generator of the external device can be started to make the snare wire flow through the high-frequency current to perform electrocautery cutting on the root of the polyp.

[0009] Since the left clamp arm and the right clamp arm are both hard parts and the outer tube can be directly operated to move in a straight line so that the left clamp arm and the right clamp arm can surround the root of the polyp. When the environment around the polyp is relatively narrow, compared with the prior art in which it is difficult to control the flexible snare wire to move from the top of the polyp to the root of the polyp to tighten the polyp, this solution can make the snare wire tighten the root of the polyp more quickly, thereby reducing the doctor's operation time, accelerating the resection rate, and shortening the operation time.

[0010] Furthermore, the first driving member includes a fixing plate fixedly connected to the inner wall of the outer tube, an airbag 1 arranged between the fixing plate and the sliding seat, a tension spring and a first air pipe, one end of the tension spring is fixedly connected to the fixing plate, the other end of the tension spring is fixedly connected to the sliding seat, one end of the first air pipe is connected to an external air source device, and the other end of the first air pipe is sealed and connected to the inner cavity of the airbag 1.

[0011] In the above scheme, under the elastic force of the tension spring, the sliding seat approaches the fixed seat so that the front ends of the left clamp arm and the right clamp arm are close to each other, and gas is introduced into the airbag through the first air pipe so that the airbag expands and pushes the sliding seat to slide toward the right port of the outer tube, so that the left clamp arm and the right clamp arm can be opened under the elastic force of the elastic member.

[0012] Furthermore, the second driving part includes a movable plate 1 arranged in a sliding connection between the inner cavity of the outer tube and the inner wall of the outer tube, an air bag 2 arranged between the movable plate 1 and the fixed plate, and a second air tube, the movable plate 1 is arranged on a side of the fixed plate away from the sliding seat, one end of the second air tube is connected to an external air source device, and the other end of the second air tube is sealed and connected to the inner cavity of the air bag 2, and the left section and the right section of the snare wire are fixedly connected to the movable plate 1.

[0013] In the above scheme, when it is necessary to move the sliding seat away from the fixed plate so that the left clamp arm and the right clamp arm surround the root of the polyp, the airbag 2 is put into a contracted state. When it is necessary to contract the snare wire to tighten the root of the polyp, gas is introduced into the airbag 2 through the second air tube to expand the airbag 2 and push the movable plate 1 to slide away from the fixed plate to pull the snare wire.

[0014] Furthermore, it also includes a sleeve fixing part for fixing the cut polyp on the clamp arm group, the sleeve fixing part includes a left upper channel arranged in the left clamp arm corresponding to the left channel, a right upper channel arranged in the right clamp arm corresponding to the right channel, a binding rope with one end passing through the left upper channel and the other end passing through the right upper channel, an elastic rope 2 with one end connected to the sliding seat and the other end connected to the middle part of the binding rope, a movable plate 2 arranged on the side of the movable plate 1 away from the fixed plate, and an airbag 3 arranged between the movable plate 2 and the movable plate 1, the airbag 3 is sealed and connected to the airbag 2 through an trachea 3, the left section of the binding rope is fixedly connected to the movable plate 2 after extending out of the left upper channel, and the right section of the binding rope is fixedly connected to the movable plate 2 after extending out of the right upper channel.

[0015] In the above scheme, when airbag one is in a contracted state and gas is introduced into airbag two through the second trachea to expand airbag two and push movable plate one to slide in the direction away from the fixed plate, movable plate one pushes movable plate two through the limiting column to synchronously move and tighten the binding rope so that the binding rope contracts and tightens the root of the polyp; when airbag two expands, gas is introduced into airbag three through trachea three to expand airbag three and push movable plate two away from movable plate one, thereby making the contraction degree of the binding rope greater than the contraction degree of the snare wire so that the binding rope tightens the root of the polyp, and when the snare wire cuts off the root of the polyp, the polyp will not fall into the intestine.

[0016] Furthermore, an inner wall near the right end of the outer tube is provided with oblique grooves respectively matching with the left clamp arm and the right clamp arm.

[0017] Furthermore, a limiting column is fixedly connected to the surface of the movable plate 1 facing the movable plate 2.

[0018] Furthermore, one end of the elastic rope connected to the snare wire is configured as a heat-resistant rubber segment.

[0019] Furthermore, the elastic member is a torsion spring, which is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is connected to the corresponding left clamp arm or the right clamp arm.

[0020] Furthermore, a transverse groove is arranged on the slide seat along the radial direction of the outer tube, and the rear ends of the left clamp arm and the right clamp arm are arranged in the transverse groove and are rotatably connected to the slide seat.

[0021] Furthermore, surfaces of the left section and the right section of the snare wire are both provided with an insulating layer.

[0022] Compared with the snare method of the prior art for polyp removal, this solution has at least the following beneficial effects:

[0023] 1. This scheme can make the snare wire tighten the root of the polyp more quickly, reduce the doctor's operation time, speed up the resection rate, shorten the operation time, and reduce the labor intensity of medical staff.

[0024] 2. This solution can fix the excised polyp on the outer tube to facilitate direct removal of the polyp, without the need for a secondary operation to grab the fallen polyp.

[0025] 3. The gas introduced in this scheme will not communicate with the gas in the patient's intestines, and will not cause gas contamination in the patient's intestinal cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0027] In the attached picture:

[0028] Figure 1 It is a schematic diagram of the structure of the present invention in the top view direction.

[0029] Figure 2 The schematic diagram of the top view of the polyp cutting method of the present invention is shown in FIG. Figure 1 .

[0030] Figure 3 The schematic diagram of the top view of the polyp cutting method of the present invention is shown in FIG. Figure 2 .

[0031] Figure 4 It is a schematic diagram of the cooperation between the left clamp arm, the right clamp arm, the slide seat and the outer tube in the right view direction.

[0032] Figure 5 Schematic diagram of the cooperation between the slide and the right clamp arm in the main view direction.

[0033] The meanings of the symbols in the accompanying drawings are:

[0034] Outer tube-10; inclined groove-101; snare wire-20; left clamp arm-301; right clamp arm-302; rotating shaft-303; left channel-304; right channel-305; elastic rope one-306; sliding seat-401; fixing plate-402; airbag one-403; tension spring-404; first trachea-405; transverse groove-406; movable plate one-501; airbag two-502; second trachea-503; limiting column-504; upper left channel-601; upper right channel-602; binding rope-603; elastic rope two-604; movable plate two-605; airbag three-606; trachea three-607; polyp root-70. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. 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 making creative work are within the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] The intestinal polyp removal device of this embodiment is as follows Figure 1-Figure 5As shown, it includes an outer tube 10, a clamp arm group with one end arranged in the outer tube 10, a snare wire 20 inserted into the clamp arm group, a first driving part that drives the clamp arm group to move to embrace the polyp root 70, a second driving part that drives the snare wire 20 to shrink away from the outer tube 10 to tighten the polyp root 70, and a sleeve fixing part for fixing the cut polyp on the clamp arm group.

[0038] The first driving part includes a slide seat 401 disposed in the inner cavity of the outer tube 10 near the right end of the outer tube 10, and a first driving member driving the slide seat 401 to slide along the axis of the outer tube 10, the slide seat 401 is a cylinder adapted to the inner wall of the outer tube 10, a transverse groove 406 is arranged on the slide seat 401 along the radial direction of the outer tube 10, and the transverse groove 406 penetrates the slide seat 401 along the radial direction of the outer tube 10, and the first driving member includes an inner wall of the outer tube 10 adapted to the inner wall of the outer tube 10 A fixedly connected fixing plate 402, an airbag 403 arranged between the fixing plate 402 and the sliding seat 401, a tension spring 404 and a first air pipe 405, one end of the tension spring 404 is fixedly connected to the fixing plate 402, the other end of the tension spring 404 is fixedly connected to the sliding seat 401, one end of the first air pipe 405 is connected to an external air source device (not shown), and the other end of the first air pipe 405 is sealed and connected to the inner cavity of the airbag 403.

[0039] The clamp arm assembly includes a left clamp arm 301 and a right clamp arm 302 that are symmetrically arranged, and the left clamp arm 301 and the right clamp arm 302 are both L-shaped. Figure 4 , Figure 5 As shown, the surfaces of the left clamp arm 301 and the right clamp arm 302 close to the inner wall of the outer tube 10 are in an arc shape adapted to the inner wall of the outer tube 10. In this embodiment, the ends of the left clamp arm 301 and the right clamp arm 302 close to the outer tube 10 are defined as the rear ends, and the ends of the left clamp arm 301 and the right clamp arm 302 away from the outer tube 10 are defined as the front ends. The rear ends of the left clamp arm 301 and the right clamp arm 302 are both arranged in the transverse groove 406. The rear ends of the left clamp arm 301 and the right clamp arm 302 are both rotatably connected to the slide seat 401 through the rotating shaft 303. Specifically, the rotating shaft 303 is fixedly connected to the slide seat 401. The left clamp arm 301 and the right clamp arm 302 are both The left clamp arm 301 and the right clamp arm 302 are respectively connected to the corresponding rotating shaft 303, and the front ends of the left clamp arm 301 and the right clamp arm 302 are both extended out of the outer tube 10. The rotating shaft 303 is respectively provided with a torsion spring (not shown) for forcing the front ends of the left clamp arm 301 and the right clamp arm 302 to rotate away from the axis of the outer tube 10. The torsion spring is sleeved on the rotating shaft 303, one end of the torsion spring is fixedly connected to the rotating shaft 303, and the other end of the torsion spring is connected to the corresponding left clamp arm 301 or the right clamp arm 302. Figure 1 , Figure 2 As shown, a left channel 304 is provided in the left clamp arm 301, and two ends of the left channel 304 respectively pass through two ends of the left clamp arm 301, and a right channel 305 is provided in the right clamp arm 302, and two ends of the right channel 305 respectively pass through two ends of the right clamp arm 302. An inclined groove 101 is provided on the inner wall near the right end of the outer tube 10, which cooperates with the left clamp arm 301 and the right clamp arm 302 respectively.

[0040] like Figure 1 , Figure 2 As shown, the second driving part includes a movable plate 501 which is arranged in a sliding connection with the inner cavity of the outer tube 10 and the inner wall of the outer tube 10, an airbag 502 which is arranged between the movable plate 501 and the fixed plate 402, and a second air pipe 503, the movable plate 501 is arranged on a side of the fixed plate 402 away from the sliding seat 401, one end of the second air pipe 503 is connected to an external air source device, and the other end of the second air pipe 503 is sealed and connected to the inner cavity of the airbag 502.

[0041] The left section of the snare wire 20 extends out of the rear end of the left clamp arm 301 through the left channel 304 and is fixedly connected to the movable plate 501. The right section of the snare wire 20 extends out of the rear end of the right clamp arm 302 through the right channel 305 and is fixedly connected to the movable plate 501. Both ends of the snare wire 20 extend out of the outer tube and are electrically connected to an external high-frequency generator (not shown). An elastic rope 306 is provided on the slide 401, one end of the elastic rope 306 is fixedly connected to the slide 401, and the other end of the elastic rope 306 is fixedly connected to the middle part of the middle section of the snare wire 20. The end of the elastic rope 306 connected to the snare wire 20 is set as a heat-resistant rubber section, and the surfaces of the left section and the right section of the snare wire 20 are both provided with an insulating layer.

[0042] like Figure 3-Figure 5As shown, the sleeve fixing part includes a left upper channel 601 arranged in the left clamp arm 301 corresponding to the left channel 304, a right upper channel 602 arranged in the right clamp arm 302 corresponding to the right channel 305, a binding rope 603 with one end passing through the left upper channel 601 and the other end passing through the right upper channel 602, an elastic rope 2 604 with one end fixedly connected to the slide seat 401 and the other end fixedly connected to the middle part of the middle section of the binding rope 603, a moving plate 2 605 arranged on the side of the moving plate 1 501 away from the fixed plate 402, and an air bag 3 606 arranged between the moving plate 2 605 and the moving plate 1 501, and the moving plate 1 501 is moved toward the moving plate 401. The limiting column 504 is fixedly connected to the surface of the second plate 605, the airbag three 606 is sealed and connected to the second airbag 502 through the trachea three 607, the movable plate two 605 is slidably connected to the inner wall of the outer tube 10, one side outer wall of the airbag three 606 is fixedly connected to the movable plate one 501, and the other side outer wall of the airbag three 606 is fixedly connected to the movable plate two 605, the left section of the binding rope 603 extends out of the upper left channel 601 and is fixedly connected to the movable plate two 605, and the right section of the binding rope 603 extends out of the upper right channel 602 and is fixedly connected to the movable plate two 605. In actual work, the upper left channel 601 and the upper right channel 602 are close to the middle of the polyp.

[0043] The movable plate 1 501 , the movable plate 2 605 , the fixed plate 402 and the slide seat 401 are provided with corresponding through holes for respectively allowing the first air pipe 405 , the second air pipe 503 , the snare wire 20 , the air pipe 3 607 and the binding rope 603 to pass through.

[0044] Compared with the snare method of the prior art for polyp removal, this solution has at least the following beneficial effects:

[0045] 1. This scheme can make the snare wire tighten the root of the polyp more quickly, reduce the doctor's operation time, speed up the resection rate, shorten the operation time, and reduce the labor intensity of medical staff.

[0046] 2. This solution can fix the excised polyp on the outer tube to facilitate direct removal of the polyp, without the need for a secondary operation to grab the fallen polyp.

[0047] 3. The gas introduced in this scheme will not communicate with the gas in the patient's intestines, and will not cause gas contamination in the patient's intestinal cavity.

[0048] The above are only embodiments of the present invention, and the common knowledge such as the known specific structures and characteristics in the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An intestinal polyp removal device, characterized in that: It comprises an outer tube, a clamp arm group with one end arranged in the outer tube, a snare wire inserted in the clamp arm group, a first driving part driving the clamp arm group to move to embrace the root of the polyp, and a second driving part driving the snare wire to shrink away from the outer tube to tighten the root of the polyp; The first driving part comprises a sliding seat arranged in the inner cavity of the outer tube near the right end of the outer tube and a first driving member driving the sliding seat to slide along the axis of the outer tube; The clamp arm group comprises a left clamp arm and a right clamp arm which are symmetrically arranged, the left clamp arm and the right clamp arm are both L-shaped, the rear ends of the left clamp arm and the rear ends of the right clamp arm are rotatably connected to the slide seat through a rotating shaft, the front ends of the left clamp arm and the front ends of the right clamp arm are both extended out of the outer tube, and the rotating shafts are respectively provided with elastic members forcing the front ends of the left clamp arm and the front ends of the right clamp arm to rotate away from the axis direction of the outer tube, a left channel is provided in the left clamp arm, and the two ends of the left channel respectively pass through the two ends of the left clamp arm, and a right channel is provided in the right clamp arm, and the two ends of the right channel respectively pass through the two ends of the right clamp arm; The left section of the snare wire extends out of the rear end of the left clamp arm through the left channel and is connected to the second driving part, the right section of the snare wire extends out of the rear end of the right clamp arm through the right channel and is connected to the second driving part, both ends of the snare wire extend out of the outer tube and are electrically connected to an external high-frequency generator, an elastic rope 1 is arranged on the slide seat, one end of the elastic rope 1 is fixedly connected to the slide seat, and the other end of the elastic rope 1 is fixedly connected to the middle part of the snare wire.

2. The intestinal polypectomy device according to claim 1, characterized in that: The first driving member includes a fixing plate fixedly connected to the inner wall of the outer tube, an airbag 1 arranged between the fixing plate and the sliding seat, a tension spring and a first air pipe, one end of the tension spring is fixedly connected to the fixing plate, the other end of the tension spring is fixedly connected to the sliding seat, one end of the first air pipe is connected to an external air source device, and the other end of the first air pipe is sealed and connected to the inner cavity of the airbag 1.

3. The intestinal polypectomy device according to claim 2, characterized in that: The second driving part includes a movable plate 1 which is arranged in a sliding connection with the inner cavity of the outer tube and the inner wall of the outer tube, an air bag 2 which is arranged between the movable plate 1 and the fixed plate, and a second air tube. The movable plate 1 is arranged on a side of the fixed plate away from the sliding seat. One end of the second air tube is connected to an external air source device, and the other end of the second air tube is sealed and connected to the inner cavity of the air bag 2. The left section and the right section of the snare wire are fixedly connected to the movable plate 1.

4. The intestinal polypectomy device according to claim 3, characterized in that: The clamping arm assembly also includes a sleeve and fixing portion for fixing the cut polyp on the clamping arm assembly, the sleeve and fixing portion includes a left upper channel arranged in the left clamping arm corresponding to the left channel, a right upper channel arranged in the right clamping arm corresponding to the right channel, a binding rope with one end passing through the left upper channel and the other end passing through the right upper channel, an elastic rope 2 connected to the sliding seat at one end and the middle part of the binding rope at the other end, a movable plate 2 arranged on the side of the movable plate 1 away from the fixed plate, and an airbag 3 arranged between the movable plate 2 and the movable plate 1, the airbag 3 is sealed and connected to the airbag 2 through an trachea 3, the left section of the binding rope is fixedly connected to the movable plate 2 after extending out of the left upper channel, and the right section of the binding rope is fixedly connected to the movable plate 2 after extending out of the right upper channel.

5. The intestinal polypectomy device according to claim 4, characterized in that: An inner wall close to the right end of the outer tube is provided with oblique grooves respectively matched with the left clamp arm and the right clamp arm.

6. The intestinal polypectomy device according to claim 5, characterized in that: The surface of the movable plate 1 facing the movable plate 2 is fixedly connected with a limiting column.

7. The intestinal polypectomy device according to claim 1, characterized in that: One end of the elastic rope connected to the snare wire is arranged as a heat-resistant rubber segment.

8. The intestinal polypectomy device according to claim 1, characterized in that: The elastic member is a torsion spring, which is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is connected to the corresponding left clamp arm or the right clamp arm.

9. The intestinal polypectomy device according to claim 2, characterized in that: A transverse groove is arranged on the slide seat along the radial direction of the outer tube, and the rear ends of the left clamp arm and the right clamp arm are arranged in the transverse groove and are rotatably connected to the slide seat.

10. The intestinal polypectomy device according to claim 1, characterized in that: The surfaces of the left section and the right section of the snare wire are both provided with an insulating layer.

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