CN113425362A

CN113425362A - Clamp device used in cooperation with endoscope

Info

Publication number: CN113425362A
Application number: CN202110750585.9A
Authority: CN
Inventors: 黄希望; 吕宵; 王均师; 周儒春
Original assignee: Zhejiang Shouding Medical Technology Co ltd
Current assignee: Zhejiang Shouding Medical Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-09-24

Abstract

The invention discloses a clamp device used in cooperation with an endoscope, which comprises a pull rope (8), a sliding handle and a handle with a built-in sliding groove, wherein the sliding handle is arranged in the sliding groove of the handle, the lower end of the sliding handle is fixed with the upper end of the pull rope (8), and the lower end of the pull rope (8) sequentially penetrates through an external connection ring (6), a middle connection ring (5) and a tightening pipe (2) and then is fixedly connected with an internal connection seat (4); the inner connecting seat (4) is connected with a clamp; one end of the middle connecting ring (5) is connected with the outer connecting ring (6), and the other end is connected with the tight pipe (2); a damper is arranged between the handle and the external ring (6).

Description

Clamp device used in cooperation with endoscope

Technical Field

The invention relates to the field of medical instruments, in particular to a clamp device matched with an endoscope for use.

Background

Endoscopic hemostasis is an important treatment method in the existing digestive tract hemorrhage treatment process, and commonly used endoscopic hemostasis methods include a laser coagulation method, an electric coagulation method, a local injection medicine hemostasis method, a medicine spraying method, a hemostatic clamp clamping method and the like.

Among them, the hemostatic clipping method has become the most effective and clinically applicable method for non-operative treatment of gastrointestinal hemorrhage due to its characteristics of small trauma, fast hemostasis, low incidence of recurrent bleeding, few complications, and definite therapeutic effect.

Clinically, the clamp device which can flexibly adjust the clamping angle, can release the clamp device to be crisp and can be opened again after release is needed.

1) The realization of the rotary adjustment clamping angle of the existing clamp device is realized through the free rotation between the clamp part and the release part, and is not restricted during the rotary adjustment, so that when the transmission shaft or the sheath tube is bent, the rotary jumping phenomenon can occur, the stable adjustment can not be realized, and meanwhile, more parts are needed for realization, and the cost is higher. In clinical application, the clamping angle is really required to be adjusted at a small angle instead of freely rotating at an unlimited large angle.

2) The release function of the existing clamp device is realized, the separation of the clamping part and the release part is realized mostly by the fracture mode of connecting pieces or other structural parts, and fracture residues or fragments splash; or the parts are more and the structure is more complex, various functions are dispersed in different parts, so that the assembly is complex, the process reliability is poor or more parts are left in a patient body, and even the case that the operation fails because the release is not crisp and thorough occurs.

3) The clamp part of the prior clamp device after being released is fixed on the tissue, and the clamp part falls off along with the tissue when the tissue is subjected to ischemic necrosis and falls off; in clinical practice, the clip needs to be opened and closed repeatedly before clipping and also needs to be released poorly after being released, and the current clip part cannot be opened and loosened once clipped on the tissue.

Disclosure of Invention

In order to solve the technical problems, the invention provides a clip device which is stable to use and simple in structure and is matched with an endoscope to use, wherein the clip device comprises a pull rope, a sliding handle and a handle with a built-in sliding groove; the inner connecting seat is connected with a clamp; one end of the middle connecting ring is connected with the outer connecting ring, and the other end of the middle connecting ring is connected with the tight receiving pipe; a damper is arranged between the handle and the external ring.

As an improvement of the clip device for use with an endoscope according to the present invention: the clamp comprises two symmetrically arranged clamping pieces; the clamping piece consists of a tail part, a rear arm, a front arm and a claw end in sequence from left to right; the tail part is provided with a hole I, the end part of the tail part is provided with at least one barb, and the connecting section between the tail part and the rear arm is arc-shaped; the forearm is provided with a hole II, and the shape of the hole II comprises, but is not limited to, a circle or a polygon; the claw ends of the two clamping pieces are mutually meshed teeth.

As a further improvement of the clip device for use with an endoscope according to the present invention: one end of the inner connecting seat is provided with a stay cable connecting part; the other end of the inner connecting seat is provided with a clip connecting part.

As a further improvement of the clip device for use with an endoscope according to the present invention: the clip connecting part of the inner connecting seat is a bulge provided with a C-shaped hole with an upward gap; protective wings are arranged on two sides of the C-shaped hole; the holes I and the C-shaped holes are connected through bolts in sequence.

As a further improvement of the clip device for use with an endoscope according to the present invention: the clip connecting part of the internal connecting seat is provided with two symmetrically arranged protective wings, and the protective wings are provided with C-shaped holes with upward gaps; the holes I and the C-shaped holes are connected through bolts in sequence.

As a further improvement of the clip device for use with an endoscope according to the present invention: the upper end of the tightening pipe is provided with two symmetrical upper blocking pieces I, and a pore formed after the upper blocking pieces I are closed is an extending position of the two clamping pieces; the lower end of the tightening pipe is provided with a middle connecting ring connecting part; the inner side wall of the lower side of the tightening pipe is sequentially provided with an inner connecting seat limiting mechanism and a clamp fastening device from top to bottom; the clamp fastening device comprises but is not limited to a hole III formed in the side wall of the lower side of the tightening pipe or a limiting groove arranged on the inner side wall of the lower side of the tightening pipe; the inner connecting seat limiting mechanism is an annular bulge which tightens the inner side wall of the pipe.

As a further improvement of the clip device for use with an endoscope according to the present invention: the middle connecting ring connecting part comprises a middle connecting ring clamping device and a middle connecting ring limiting device; the middle connecting ring clamping device is of a block structure or a sheet structure protruding towards the inner side, and comprises but is not limited to two symmetrical lower baffles II capable of being closed inwards, or two symmetrical lower baffles II incapable of being closed inwards are internally provided with protruding blocks protruding towards the inner side; the middle connecting ring limiting device is a buckle mechanism for limiting the relative movement of the outer connecting ring and the tightening pipe, and when the middle connecting ring clamping device is a lower baffle II capable of being closed inwards, the mechanism is a gap formed after the lower baffle II is closed inwards; when the middle connecting ring clamping device is a lower baffle II which cannot be closed inwards, the mechanism is a gap formed by hollowing between the two lower baffles II.

As a further improvement of the clip device for use with an endoscope according to the present invention: the upper end of the external connecting ring is provided with a symmetrical upper baffle piece II, and the upper baffle piece II is embedded into the position of the closed lower baffle piece I or the position of a gap between two symmetrical lower baffle pieces II; the inner side wall of the upper end of the external connection ring is provided with a middle connection ring limiting convex block.

As a further improvement of the clip device for use with an endoscope according to the present invention: the upper end and the lower end of the middle connecting ring are provided with annular bulges; the upper end bulge of the middle connecting ring is in clearance fit with the lower end of the tightening pipe, and the middle connecting ring connecting part of the tightening pipe is clamped in the middle section of the middle connecting ring; the bulge at the lower end of the middle connecting ring is in clearance fit with the upper end of the outer connecting ring, and the upper end bulge of the outer connecting ring is clamped by the middle connecting ring limiting bulge block.

As a further improvement of the clip device for use with an endoscope according to the present invention: the damper is a spring tube; the pull rope penetrates through the spring tube, and the upper end of the spring tube is fixed with the lower end of the handle; the lower end of the spring tube is fixedly connected with the upper end of the external ring; the inhaul cable comprises but is not limited to a metal monofilament or a rope, and the spring tube comprises but is not limited to a round wire spring tube or a flat wire spring tube.

The solution of the invention is as follows: the invention mainly realizes that the accurate rotation is realized by fewer parts, the problem of rotation jump caused by bending of the transmission shaft can be avoided or weakened, meanwhile, the invention realizes the complete and crisp separation of the clamp part and the release part, the clamp can be opened and separated again after being released, in addition, the process is simple, and the cost of the parts and the process is lowest.

Drawings

FIG. 1 is a schematic view of the main structure of the closed state of the clip of the present invention;

FIG. 2 is a principal structural schematic view of the opened state of the clamp of FIG. 1;

FIG. 3 is an exploded view of the principal structure of FIG. 2;

FIG. 4 is a schematic view of the main structure of the clip of FIG. 3;

FIG. 5 is a schematic view of the main structure of the cinch tube of FIG. 3;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a perspective view of FIG. 5;

FIG. 8 is a schematic view of another configuration of FIG. 5;

FIG. 9 is a schematic view of the use state of FIG. 7;

FIG. 10 is a schematic view of yet another construction of FIG. 5;

FIG. 11 is a schematic view of the main structure of the inner joint seat;

FIG. 12 is a schematic view of another embodiment of the inner joint seat;

FIG. 13 is a schematic view of the main structure of the latch;

FIG. 14 is another principal structural view of the latch;

FIG. 15 is a schematic view of the main structure of the interconnecting ring;

FIG. 16 is a schematic view of another construction of the interconnecting ring;

FIG. 17 is a schematic view of the principal structure of the circumscribing ring;

fig. 18 is a schematic view of another configuration of the circumscribing ring.

Detailed Description

Embodiment 1 and fig. 1 to 3 show a clip device for use with an endoscope, including a grip portion and a release portion. The clamping part comprises a clamping piece 1, a tightening pipe 2 and a bolt 3; the releasing part comprises an inner connecting seat 4, a middle connecting ring 5, an outer connecting ring 6, a spring tube, a pulling rope 8 (the pulling rope 8 is a metal monofilament or a rope) and a handle part.

The handle part comprises a sliding handle and a handle with a built-in sliding groove, the sliding handle sleeve is arranged in the sliding groove of the handle, and the lower end of the sliding handle is fixed with the upper end of the inhaul cable 8. The lower end of the inhaul cable 8 penetrates through the external connection ring 6, the middle connection ring 5 and the tightening pipe 2 in sequence and then is fixedly connected with the internal connection seat 4. The lower end of the handle is fixed at the upper end of the spring tube, and the lower end of the spring tube is fixed at the upper end of the external ring 6; the spring tube suit is in the 8 outsides of cable, and is connected through the outside protective housing between the lower extreme of slip handle and the external ring 6, and the outside protective housing is in the outside of spring tube.

The inner connecting seat 4 is connected with a clamp; the clip is an integral clip or a split clip, and the embodiment provides a split scheme, as shown in fig. 4, the clip is composed of two symmetrically arranged clips 1, and the clips 1 sequentially comprise a tail part 18, a rear arm 17, a front arm 16 and a claw end 15 from left to right. Wherein, the connecting portion between afterbody 18 and back arm 17 is provided with certain radian, and this clamping piece 1's whole or this connecting portion adopt elastic metal material to make, and in the centre gripping, the elastic force that brings through this position radian realizes the function of opening and closing of clip. The tail part 18 is provided with a hole I12 (the hole I12 is a connecting hole and is connected with the tightening pipe 2 through a bolt 3), one or two protrusion part barbs 11 (the barbs 11 are stoppers when the clamp is closed, and the function of closing and locking is realized through the internal arrangement of the tightening pipe 2) are arranged at the end part of the tail part 18; the forearm 16 is provided with a hole II 13 (the shape of the hole II 13 can be circular or elliptical, and the big and small circles are tangent to hollow or trapezoidal and the like), the arrangement of the mechanism improves the expansibility of the related product of the invention, and the linkage with other related equipment can be realized through the hole II 13; the front end of the claw end 15 is provided with a tooth I14, and the teeth I14 of the two clamping pieces 1 are in an engaged state (for example, a single tooth, another double tooth, or two teeth are in an engaged state, which is mainly the conventional design of clamping stability).

As shown in fig. 12, the inner socket 4 has a connecting portion at a lower end thereof for connecting the cable 8 to each other, and the cable 8 is fixed to the lower end of the inner socket 4 by the connecting portion. The upper end of the inner connecting seat 4 is provided with a connecting part with the clip, the connecting part has two setting methods, as shown in fig. 11 and 12 respectively, one mode is that the upper end of the inner connecting seat 4 is provided with a raised C-shaped hole 41, the opening of the notch is upward, and two sides of the raised C-shaped hole 41 are provided with protective wings 42. In another arrangement, two symmetrical protective wings 42 are provided at the upper end of the inner connecting seat 4, and a C-shaped hole 41 with an upward notch is provided on the protective wing 42. The clip 1 can be connected to the inner socket 4 by inserting the pin 3 into the hole i 12 and the C-shaped hole 41 of the tail 18 in sequence, wherein the pin 3 is a straight solid rod or a straight pipe (or a straight solid rivet or hollow rivet) as shown in fig. 13 or 14. The clip 1 is retracted within the cinch tube 2 in the closed position.

Wherein, tighten up pipe 2 as shown in fig. 5 and 7, for cylindrical, inside fretwork, cavity that all do not seal from top to bottom forms, be two symmetrical top flaps I23 in the upper end of tightening up pipe 2, top flaps I23 is protruding in the upper end of tightening up pipe 2, as shown in fig. 9, this top flap I23 can inwards buckle, top flap I23 infolding back, two spaces that top flaps I23 and the upper end port of tightening up pipe 2 formed are the position of stretching out of clamping piece 1, and closed top flap I23 is as the stop gear under the clip open mode, restriction it runs out and tightens up pipe 2. In the position, the upper baffle piece I23 is not arranged, and as shown in fig. 8, when the upper baffle piece I23 is not arranged, a hole IV 24 is dug in the upper end of the tightening pipe 2, and the hole IV 24 is matched with the bolt 3 to form a limiting function. The lower side of the tightening pipe 2 is provided with a middle connecting ring connecting part which comprises a middle connecting ring clamping device and a middle connecting ring limiting device, wherein the middle connecting ring clamping device is of a block structure or a sheet structure which protrudes inwards, and comprises but is not limited to two symmetrical lower baffles I21 which can be closed inwards, or two symmetrical lower baffles II 26 which can not be closed inwards are internally provided with protruding blocks 27 which protrude inwards; the middle connecting ring limiting device is a buckling mechanism for limiting the relative movement of the outer connecting ring 6 and the tightening pipe 2, and when the middle connecting ring limiting device is a lower baffle I21 capable of being closed inwards, the mechanism is a gap formed after the lower baffle I21 is closed inwards; when the middle connecting ring clamping device is a lower baffle II 26 which cannot be closed inwards, the mechanism is a gap formed by hollowing between the two lower baffle II 26. The specific structure has the following two schemes:

one scheme is that an annular bulge 25 is arranged on the inner side wall of the lower side of a tightening pipe 2 (the annular bulge 25 is a limiting mechanism), through the matching of the annular bulge 25 and a bolt 3 (after the annular bulge 25 is clamped at two ends of the bolt 3, the bolt 3 cannot move downwards), a one-way limiting effect can be formed on the movement of an inner connecting seat 4, through the limiting effect, and meanwhile, force is applied by a stay cable 8, so that the separation of the inner connecting seat 4 (a C-shaped hole 41 of the inner connecting seat 4 is opened after being stressed) and a clamp and the separation work of a middle connecting ring 5 and the tightening pipe 2 can be formed; the lower side of the tightening pipe 2 is provided with a clamp limiting mechanism, a hole III 22 is formed in the side wall of the lower side of the tightening pipe 2, after the clamp is clamped, the clamping piece 1 is controlled to retreat through the inhaul cable 8 until the barb 11 of the tail portion 18 is clamped into the hole III 22, at the moment, as the clamp is limited through the barb 11 and the hole III 22 and continuously applies force on the inhaul cable 8, the notch of the C-shaped hole 41 is pulled open instantly to become a U-shaped opening (the bolt 3 can be locked by being separated from the C-shaped hole 41 through the U-shaped opening), and the inner base 4 is separated from the clamp. Connect the ring connecting portion in the lower extreme of cinch tube 2 is provided with, connect the ring connecting portion in for the lower fender I21 of two symmetries, lower fender I21 is not convex state at the lower extreme of cinch tube 2, but through the lower fender I21 that forms after cutting out two straight lines at the lower extreme of cinch tube 2, consequently, after two lower fenders I21 are respectively invaginated, it is still protruding to form other positions of cinch tube 2 (at this moment, insert the position of lower fender I21 with two piece upper fenders II 61 of external ring 6 upper end, should go up fender II 61 and can block each other with other protruding positions of cinch tube 2, prevent relative rotary motion between external ring 6 and the cinch tube 2.

Another improvement from the above one lies in the arrangement of the lower baffle i 21, in which a raised lower baffle ii 26 (a difference from the previous one is that this is raised) is provided at the lower end of the cinch tube 2, and an inwardly raised bump 27 is provided on the lower baffle ii 26. The function that this protruding piece 27 realized is unanimous with the function that forms after the above-mentioned lower separation blade I21 infolding, and lower separation blade II 26 is because protruding in the lower extreme tip of tightening pipe 2, consequently has two spaces between lower separation blade II 26 and the lower separation blade II 26, and in this kind of scheme, two piece upper separation blades II 61 of outer joint ring 6 upper end insert this space, realize preventing the function of relative rotary motion between outer joint ring 6 and the tightening pipe 2.

As shown in FIG. 15 or 16, the middle connecting ring 5 is a ring-shaped protrusion with upper and lower ends, and when in use, the protrusion at the upper end is in clearance fit with the tightening pipe 2 and is limited by the inward-folded protrusion block 27 of the lower baffle I21 or the lower baffle II 26. The lower end of the connecting ring is in clearance fit with the external connecting ring 6, an annular bulge is arranged on the inner side wall of the upper end of the external connecting ring 6 to form a middle connecting ring limiting bulge block, and the lower end of the connecting ring 5 in the clamping position of the middle connecting ring limiting bulge block is bulged to prevent the external connecting ring 6 and the middle connecting ring 5 from being separated. As shown in fig. 17 or 18, the external ring 6 can have two structures, the first structure is that two convex upper stop pieces II 61 are arranged at the upper end of the external ring 6 as shown in fig. 17, and the other structure is that a groove 62 is arranged on a middle connecting ring limiting convex block of the external ring 6, a tightening pipe 2 is inserted into the groove 62, and the position formed by inwards folding the lower stop pieces I21 of the tightening pipe 2 is matched with the middle connecting ring limiting convex block.

A damper is arranged between the handle and the external ring 6 and is a spring tube, the inhaul cable 8 is sleeved in the spring tube, one end of the spring tube is fixed with the handle, and the other end of the spring tube is fixedly connected with the external ring 6. The outer side of the spring tube can be externally provided with a protection tube.

The practical use steps are as follows:

firstly, the integral use step:

the sliding handle slides (moves forwards) in the sliding groove of the handle, the pull rope 8 is pushed to drive the inner connecting seat 4 to move forwards, the clamping piece 1 extends out of the tightening pipe 2, the clamping piece 1 is opened, and due to the radian of the tail part 18 on the clamping piece 1, when the tail part 18 extends out of the tightening pipe 2, the position of the rear wall 17 of the clamping piece 1 starts to be in an opening state.

The handle that slides (lapse) in the spout of handle, 8 drive the internal joint seat 4 lapse of cable, internal joint seat 4 contracts into in tightening pipe 2, because bolt 3 is blockked by the annular arch 25 who tightens up pipe 2, at this moment, at the handle end application of force that slides, can cause the C type hole 41 deformation on the internal joint seat 4, become the U-shaped mouth, and at this moment, the U-shaped mouth can no longer restrict bolt 3, consequently, two clamping pieces 1 through the combination of bolt 3 separate with internal joint seat 4.

After the clip 1 loses the constraint of the inner connecting seat 4, the clip bounces to two sides, and the protruding part barb 11 at the tail part 18 of the clip 1 is buckled on the hole III 22 of the tightening pipe 2.

Meanwhile, the inhaul cable 8 continues to move backwards, the inner base 4 is taken away from the middle connecting ring 5, the middle connecting ring 5 props up a lower baffle I21 of the tightening pipe 2, and the tightening pipe 2 is separated from the middle connecting ring 5.

Secondly, in the rotating mode of the sliding handle relative to the handle:

the sliding handle rotates relative to the handle, the handle is static, but the sliding handle drives the inhaul cable 8, the inner connecting seat 4 and the clamping piece 1 to rotate;

the two clamping pieces 1 drive the tightening pipe 2 to rotate under the limiting action of the folded upper baffle piece I23; tighten up

pipe

2 and 5 relative rotary motion of well connecing ring, but because the limiting displacement between tighten up pipe 2 and the external ring 6, external ring 6 can't be along with the motion, and external ring 6 with spring pipe fixed connection, the spring pipe is fixed with the handle, and the relative handle rotation of slip handle, the handle is fixed motionless, so, when 8 interior book of cable appear jumping, because the spacing of spring pipe, jump by a wide margin can't appear, consequently, will slow down through the rotational resistance of spring pipe and beat, make the rotation can slowly reach the purpose angle.

Secondly, controlling the separated clamp:

after the barb 11 of the tail part 18 of the clamping piece 1 is clamped into the hole III 22 of the tightening pipe 2, after the clamping piece 1 is released, the clamping piece 1 in the groove is grabbed by a grabbing clamp and is drawn close to the middle, the barb 11 of the clamping piece 1 is separated from the hole III 22, then the clamping piece 1 is pushed forwards, the clamp formed by the two clamping pieces 1 can be pushed out from the tightening pipe 2, and the two clamping pieces 1 are bounced open through the radian action between the tail part 18 and the rear arm 17, so that the opening procedure of the clamp is completed.

Finally, it should also be noted that the above-mentioned list is only one specific embodiment of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.

Claims

1. A clamp device used in cooperation with an endoscope comprises a pull rope (8), a sliding handle and a handle with a built-in sliding groove, wherein the sliding handle is arranged in the sliding groove of the handle, the lower end of the sliding handle is fixed with the upper end of the pull rope (8), and the clamp device is characterized in that the lower end of the pull rope (8) sequentially penetrates through an external connection ring (6), a middle connection ring (5) and a tightening pipe (2) and then is fixedly connected with an internal connection seat (4);

the inner connecting seat (4) is connected with a clamp;

one end of the middle connecting ring (5) is connected with the outer connecting ring (6), and the other end is connected with the tight pipe (2);

a damper is arranged between the handle and the external ring (6).

2. A clip device for use with an endoscope according to claim 1 and also comprising: the clamp comprises two symmetrically arranged clamping pieces (1);

the clamping piece (1) consists of a tail part (18), a rear arm (17), a front arm (16) and a claw end (15) from left to right in sequence;

the tail part (18) is provided with a hole I (12), the end part of the tail part (18) is provided with at least one barb (11), and the connecting section between the tail part (18) and the rear arm (17) is arc-shaped;

the front arm (16) is provided with a hole II (13), and the shape of the hole II (13) comprises but is not limited to a circle or a polygon;

the claw ends (15) of the two clamping pieces (1) are mutually meshed teeth (14).

3. A clip device for use with an endoscope according to claim 2 and also comprising: one end of the inner connecting seat (4) is provided with a stay cable connecting part, and the other end of the inner connecting seat is provided with a clamp connecting part.

4. A clip device for use with an endoscope according to claim 3 and also comprising: the clip connecting part of the inner connecting seat (4) is a bulge provided with a C-shaped hole (41) with an upward notch;

protective wings (42) are arranged on two sides of the C-shaped hole (41);

the hole I (12) and the C-shaped hole (41) are connected through the bolt (3) in sequence.

5. A clip device for use with an endoscope according to claim 3 and also comprising: the clip connecting part of the internal connecting seat (4) is provided with two protective wings (42) which are symmetrically arranged, and the protective wings (42) are provided with C-shaped holes (41) with upward notches;

6. A clip device for use with an endoscope according to claim 4 or 5 and also comprising: the upper end of the tightening pipe (2) is provided with two convex and symmetrical upper blocking pieces I (23), and a pore formed by the upper blocking pieces I (23) and the port of the tightening pipe (2) after the upper blocking pieces I (23) are closed is the extending position of the two clamping pieces (1);

the lower end of the tightening pipe (2) is provided with a middle connecting ring connecting part;

the inner side wall of the lower side of the tightening pipe (2) is sequentially provided with an inner base limiting mechanism and a clamp tightening device from top to bottom;

the clamp fastening device comprises but is not limited to a hole III (22) formed on the side wall of the lower side of the tightening pipe (2) or a limiting groove arranged on the inner side wall of the lower side of the tightening pipe (2);

the inner connecting seat limiting mechanism is an annular bulge (25) on the inner side wall of the tightening pipe (2).

7. A clip device for use with an endoscope according to claim 6 and also comprising: the middle connecting ring connecting part comprises a middle connecting ring clamping device and a middle connecting ring limiting device;

the middle connecting ring clamping device is of a block structure or a sheet structure protruding towards the inner side, and comprises but is not limited to two symmetrical lower baffles I (21) capable of being closed towards the inner side, or two symmetrical lower baffles II (26) incapable of being closed towards the inner side, wherein inward protruding blocks (27) are arranged in the two lower baffles I (21) capable of being closed towards the inner side;

the middle connecting ring limiting device is a buckling mechanism for limiting the relative movement of the outer connecting ring (6) and the tightening pipe (2), and when the middle connecting ring limiting device is a lower baffle I (21) capable of being closed inwards, the middle connecting ring limiting device is a gap formed after the lower baffle I (21) is closed inwards; when the middle connecting ring clamping device is a lower baffle II (26) which cannot be closed inwards, the mechanism is a gap formed after the two lower baffle II (26) are hollowed out.

8. A clip device for use with an endoscope according to claim 7 and also comprising: the upper end of the external ring (6) is provided with a symmetrical upper baffle II (61), and the upper baffle II (61) is embedded into the position of the closed lower baffle I (21) or the position of a gap between two symmetrical lower baffles II (26);

the inner side wall of the upper end of the external connection ring (6) is provided with a middle connection ring limiting convex block.

9. A clip device for use with an endoscope according to claim 8 and also comprising: the upper end and the lower end of the middle connecting ring (5) are provided with annular bulges;

the upper end of the middle connecting ring (5) is in clearance fit with the lower end of the tightening pipe (2), and the middle connecting ring connecting part of the tightening pipe (2) is clamped into the middle section of the middle connecting ring (5);

the bulge at the lower end of the middle joint ring (5) is in clearance fit with the upper end of the external joint ring (6), and the upper end bulge of the external joint ring (6) is clamped by the middle joint ring limiting bulge block.

10. A clip device for use with an endoscope according to claims 1-9 and also comprising: the damper is a spring tube;

the pull cable (8) penetrates into the spring tube, and the upper end of the spring tube is fixed with the lower end of the handle; the lower end of the spring tube is fixedly connected with the upper end of the external ring (6);

the inhaul cable (8) comprises but is not limited to a metal monofilament or a rope, and the spring tube comprises but is not limited to a round wire spring tube or a flat wire spring tube.