Novel loop ligature ring for endoscope

Abstract

The novel loop ligature ring comprises a handle, a push tube, an outer sleeve, an inner hook, a clamping pile and a sleeve belt, and the far end of the handle is fixedly connected with the near end of the push tube and internally communicated with the near end of the push tube; the outer sleeve tightly wraps the push tube and can move along the push tube under a certain push-pull force; the inner hook is installed inside the handle and the push tube, the near end of the inner hook is fixedly connected with an inner hook control ring on the handle, and the far end of the inner hook is tightly attached to the inner wall of the push tube and can be pushed out or pulled into the push tube; clamping teeth which are arranged in parallel are arranged in the clamping pile, and the clamping teeth are inclined towards the near end; the sleeve belt penetrates through the interior of the clamping pile, the near end of the sleeve belt is of a coil structure which can be hooked on the inner hook and is used for traction, the far end of the sleeve belt is provided with a loop ligature ring, the middle of the sleeve belt is provided with a hard clamping belt located in the clamping pile, the hard clamping belt is provided with clamping teeth arranged in parallel, and the clamping teeth of the hard clamping belt incline towards the far end and can be clamped on the clamping teeth in the clamping pile when the sleeve belt is pulled. The novel loop ligature ring for the endoscope has no damage to the gastrointestinal tract wall.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a novel ligation ring for endoscopes. Background Art

[0002] Endoscopic ligation ring is a common surgical instrument widely used in endoscopic surgery for ligation of large polyps, wound reduction and perforation suturing.

[0003] The existing ligation ring includes a lock body and a sleeve ring. A through hole is provided in the middle of the lock body. The ligation ring partially passes through the through hole to form a large ring and a small ring. The large ring is used to tie up the suture part, and the small ring is used to pull and tighten the large ring. When in use, the large ring is put around the suture part, and the inserter is placed through the endoscopic biopsy channel. The small hook at the front end of the inserter hooks the small ring and pulls outward. At this time, the lock body is fixed against the front end surface of the inserter, and the pull continues to be pulled outward, so that the large ring is gradually reduced and tightened, and then the ligation part is tightened and ligated, and finally the inserter is separated from the ligation device. The ligation device has a disadvantage that when the inserter and the ligation device are separated, the ligation state is maintained only by the squeezing and friction effect of the middle through hole of the lock body and the ligation ring. However, after a long time, the large ring may gradually loosen, affecting the tightening degree of the ligation, which is not conducive to the operation and the recovery of the patient in the later stage.

[0004] In order to improve the above defects, Chinese patent CN206239454U discloses an endoscopic ligation ring, which includes a ring and a lock body; the lock body is symmetrically provided with a left channel and a right channel, and locking teeth are respectively arranged in the left channel and the right channel; the neck of the ring passes through the left channel and the right channel respectively, and the ring is respectively provided with chain teeth that cooperate with the locking teeth in the channel. This endoscopic ligation ring uses the principle of wire harness tie, and the large ring of the ring does not loosen after tightening the part, and can only be tied tighter and tighter without loosening, which effectively solves the problems of the above-mentioned existing ligation rings. However, this endoscopic ligation ring still has defects: the part of the large ring of the ring extending out of the lock body is also provided with chain teeth, which is easy to cause damage to the gastrointestinal wall. Therefore, it is necessary to design a new type of ligation ring for endoscopes to improve the above defects. Utility Model Content

[0005] The utility model aims to provide a novel ligation ring for endoscope to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a new type of ligation ring for endoscope, comprising a handle, a push tube, an outer sleeve, an inner hook, a clamping pile and a set of belts, the distal end of the handle is fixedly connected to the proximal end of the push tube and the interiors are communicated; the outer sleeve is tightly wrapped around the push tube and can move along the push tube under a certain push-pull force; the inner hook is installed inside the handle and the push tube, its proximal end is fixedly connected to an inner hook control ring on the handle, and its distal end is tightly fitted with the inner wall of the push tube and can be pushed out or pulled into the push tube; parallel-arranged clamping teeth are provided in the clamping pile, and the direction of the clamping teeth is inclined to the proximal end; the belt passes through the interior of the clamping pile, the proximal end of the belt is a coil structure that can be hooked on the inner hook and used for pulling, and the distal end is the ligation ring, and the middle of the belt is a hard clamping belt located inside the clamping pile, the hard clamping belt is provided with parallel-arranged clamping teeth, the direction of the clamping teeth of the hard clamping belt is inclined to the distal end and can be clamped on the clamping teeth in the clamping pile when the belt is pulled.

[0007] As a further improvement of the utility model, the pile is separated by a baffle, the distal section of the baffle is embedded and fixed on the inner wall of the pile, the proximal section of the baffle is a free section which is slightly narrower than the distal section and can bend sideways in the pressure direction and can rebound, and the teeth in the pile are arranged on one side of the free section.

[0008] As a further improvement of the utility model, the clamping pile is a hard cylinder, and its outer diameter is consistent with the outer diameter of the push tube.

[0009] As a further improvement of the present invention, the proximal section of the sleeve is a smooth and flexible metal filament structure, and the proximal section is adjacent to the hard cassette.

[0010] As a further improvement of the present invention, the farthest end of the inner hook is a hook at a right angle.

[0011] As a further improvement of the present invention, the tape is a 1 / 2 arc-shaped cylindrical structure, with the arc-shaped side of the tape facing the inner wall of the pile and the non-arc-shaped side facing the baffle, and the teeth on the tape are arranged in parallel up and down and embedded in the non-arc-shaped surface.

[0012] Compared with the prior art, the novel ligation ring for endoscope of the utility model has the following beneficial effects:

[0013] (1) The middle of the sleeve is a hard tape located inside the clamping pile. The hard tape is provided with parallel arranged clamping teeth so that the hard tape is not exposed and thus does not damage the gastrointestinal wall.

[0014] (2) The distal end of the inner hook fits tightly with the push tube, so that when the distal end of the inner hook hooks the coil structure of the sleeve and pulls the coil structure into the push tube, the sleeve will not fall off.

[0015] (3) A baffle is provided inside the pile, the distal part of the baffle is fixed, and the proximal part is a slightly narrow free part that can be elastically deformed to facilitate the smooth engagement of the hard cassette with the hard teeth.

[0016] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a general schematic diagram of a new type of endoscopic ligation ring.

[0018] Figure 2 Schematic diagram of the pile structure.

[0019] Figure 3 Schematic diagram of the belt.

[0020] Figure 4 Working principle of the pile and the belt Figure 1 .

[0021] Figure 5 Working principle of the pile and the belt Figure 2 .

[0022] Figure 6 Working principle of a new type of ligation ring for endoscopy Figure 1 .

[0023] Figure 7 Working principle of a new type of ligation ring for endoscopy Figure 2 .

[0024] Figure 8 Working principle of a new type of ligation ring for endoscopy Figure 3 .

[0025] Fig. 9 Working principle of a new type of ligation ring for endoscopy Figure 4 .

[0026] Fig.10 Working principle of a new type of ligation ring for endoscopy Figure 5 .

[0027] Fig.11 Working principle of a new type of ligation ring for endoscopy Figure 6 .

[0028] Fig.12 Working principle of a new type of ligation ring for endoscopy Figure 7 .

[0029] The main pictures are labeled and explained as follows: handle 1, ring 11, inner hook control ring 12, outer sleeve 2, push tube 3, inner hook 4, strap 5, ligation ring 51, proximal section string portion 51a, hard cassette 52, coil structure 53, cassette teeth 54, stake 6, baffle 61, hard clamping teeth 62. DETAILED DESCRIPTION

[0030] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements.

[0031] Please refer to Figure 1-12 The novel ligation ring for endoscope comprises a handle 1, an outer sleeve 2, a push tube 3, an inner hook 4, a sleeve belt 5 and a clamping pile 6.

[0032] The proximal end of the handle 1 is provided with a collar 11 for fixing, and an inner hook control ring 12 for controlling the inner hook 4 is installed on the outer wall of the handle 1. The distal end of the handle 1 is connected and fixed to the proximal end of the push tube 3. The end of the inner hook 4 is connected and fixed to the inner hook control ring 12 of the handle 1. The inner hook control ring 12 has a certain friction with the outer wall of the handle 1, and under a certain external force, the inner hook 4 located inside the push tube 3 can be moved forward and backward.

[0033] The push tube 3 is cylindrical and can be made of metal with toughness; the proximal end of the push tube 3 is connected and fixed to the distal end of the handle 1 .

[0034] The distal section of the outer sleeve 2 is made of a relatively hard material, tightly wrapping around the clamping post 6 of the conjoined double endoscope clamp; the rest of the outer sleeve 2 is made of a tough material, which is convenient for fitting the rotation and bending of the endoscope body; the inner diameter of the outer sleeve 2 is suitable to tightly wrap around the push tube 3 and the metal endoscope clamp, and can move forward and backward along the push tube under a certain push and pull force. Since the biopsy channels of the commonly used therapeutic endoscopes are two types of 2.8mm or 3.2mm, the outer diameter of the outer sleeve 2 is less than 2.8mm or less than 3.2mm.

[0035] The inner hook 4 is made of metal, and the distal end is a right-angle hook. The distal end of the inner hook 4 is tightly fitted with the push tube 3, and the inner hook 4 can move, so after the distal end of the inner hook 4 hooks the coil structure 53 of the sleeve band 5 and pulls it into the push tube 3, the sleeve band 5 will not fall off; after the inner hook 4 extends out of the push tube 3, the sleeve band 5 falls off, thereby releasing the sleeve band 5.

[0036] The clamping pile 6 is cylindrical, made of hard material, and its outer diameter is consistent with the outer diameter of the push tube 3; a square baffle 61 is provided inside the clamping pile 6, located in the middle of the clamping pile 6, and is made of hard material. Its distal part is embedded and fixed to the inner wall of the clamping pile 6, and its proximal part is slightly narrower and not fixed to the inner wall of the clamping pile 6. Under a certain side pressure, it can bend sideways in the direction of pressure, which is a free part. After the side pressure is removed, the baffle 61 can rebound and restore its initial state; a hard tooth 62 is provided on one side of the proximal part of the baffle 61, that is, the free part, and the hard tooth 62 is arranged in parallel up and down, and the direction of the hard tooth 62 is obliquely upward, that is, the proximal end (close to the push tube 3 side), and the side of the baffle 61 provided with the hard tooth 62 can pass through a sleeve 5.

[0037] The strap 5 includes a proximal section of a thin rope portion 51a and a hard tape 52 in the middle portion; the proximal section of the thin rope portion 51a can be made of metal wire, which has a smooth surface and is flexible and not easy to break under a certain external force. Its proximal end is a coil structure 53 (the inner hook end of the thin rope portion), which is used to be fixed on the right-angle hook at the front end of the inner hook 4, and its other distal end is a ligation ring 51; the middle portion of the strap 5 is a section of hard tape 52, which is similar to a 1 / 2 arc-shaped cylindrical structure, with one side of the arc-shaped surface facing the inner wall of the pile 6, and there is a very small gap between the inner wall of the pile 6, and the non-arc-shaped surface side faces the baffle 61, and the non-arc-shaped surface is inlaid with tape teeth 54 arranged in parallel up and down, and the direction of the tape teeth 54 is obliquely downward. The hard clip 52 is located inside the clamping pile 6, and can be pulled to move unidirectionally toward the hard clip teeth 62 of the clamping pile 6; when the inner hook 4 hooks the coil structure 53 of the sleeve belt 5 and pulls, the clip teeth 54 of the hard clip 52 are stuck in the hard clip teeth 62 of the baffle 61, thereby tightening the sleeve belt 5. The sleeve belt 5 can only move unidirectionally toward the pulling direction, so that the sleeve belt 5 can be tightened without loosening.

[0038] The use principle of the pile and the sleeve: 1. Original state: The hard clamping belt 52 of the sleeve 5 is located at the distal part of the inner cavity of the pile 6, and the hard clamping belt 52 is located on one side of the baffle 61. 1. Some of the tape teeth 54 on the hard tape 52 engage with the hard teeth 62 of the baffle 61, which play a role in fixing the strap 5; 2. Pulling one side of the strap 5: When pulling upward, the hard tape 52 squeezes the free part of the baffle 61, causing the free part of the baffle 61 to bend slightly, and the hard tape 52 moves upward in one direction and is firmly stuck and fixed with the hard teeth 62 of the free part of the baffle 61; the baffle 61 has a certain elasticity, and after the tape teeth 54 of the hard tape 52 engage and are fixed with the hard teeth 62 of the baffle 61, the side bend of the baffle 61 can be restored; 3. After pulling the strap 5 upward, the hard tape 52 of the strap 5 engages and is fixed with the hard teeth 62 on the side of the free part of the baffle 61, thereby firmly tightening the strap 5.

[0039] The operation process of the new type of ligation ring for endoscope is as follows: 1. Extend the inner hook 4 and hook the coil structure 53 of the cuff 5 with the hook at the front end of the inner hook 4; push the outer sleeve 2 and store the ligation ring 51 in the outer sleeve 2; 2. After installation, extend the ligation ring 51 from the endoscopic biopsy channel, and then pull the outer sleeve 2 backward to open the ligation ring 51; 3. Put the ligation ring 51 around the lesion part a, and tighten the ligation ring 51 by pulling the inner hook 4; 4. After the ligation ring 51 is tightened, push the inner hook 4 so that the inner hook 4 extends out of the push tube 3, thereby disengaging the coil structure 53 to release the ligation ring 51.

[0040] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A new type of ligation ring for endoscope, characterized in that: include: A handle, a push tube, an outer sleeve, an inner hook, a clamping pile and a set of belts, wherein the distal end of the handle is fixedly connected with the proximal end of the push tube and the interiors are communicated; The outer sleeve is tightly wrapped around the push tube and can move along the push tube under push and pull forces; The inner hook is installed inside the handle and the push tube, with its proximal end fixedly connected to an inner hook control ring on the handle, and its distal end tightly fitting with the inner wall of the push tube and being able to be pushed out or pulled into the push tube; The pile is provided with parallel arranged latch teeth, which are slanted toward the proximal end; The sleeve passes through the inside of the pile, the proximal end of the sleeve is a coil structure that can be hooked on the inner hook and used for pulling, the distal end is a ligation ring, the middle of the sleeve is a hard tape located inside the pile, the hard tape is provided with teeth arranged in parallel along the proximal and distal directions, the teeth of the hard tape are inclined toward the distal end and can be stuck on the teeth in the pile when the sleeve is pulled.

2. The novel ligation ring for endoscope according to claim 1, characterized in that: The pile is separated by a baffle, the distal section of the baffle is embedded and fixed on the inner wall of the pile, the proximal section of the baffle is a free part which is slightly narrower than the distal section and can bend sideways in the pressure direction and rebound, and the clamping teeth in the pile are arranged on one side of the free part.

3. The novel ligation ring for endoscope according to claim 2, characterized in that: The clamping pile is a hard cylinder, and its outer diameter is consistent with the outer diameter of the push tube.

4. The novel ligation ring for endoscope according to claim 2, characterized in that: The proximal section of the sleeve is a smooth and flexible metal filament structure, and the proximal section is adjacent to the hard cassette.

5. The novel ligation ring for endoscope according to claim 2, characterized in that: The farthest end of the inner hook is a hook at a right angle.

6. The novel ligation ring for endoscope according to claim 2, characterized in that: The cassette is a 1 / 2 arc-shaped cylindrical structure, with the arc-shaped side of the cassette facing the inner wall of the pile and the non-arc-shaped side facing the baffle. The teeth on the cassette are arranged in parallel up and down and embedded on the non-arc-shaped surface.

Images