CN111658058B - Clip device for use with endoscope and clip portion thereof - Google Patents

Abstract

The invention provides a clip device for use with an endoscope and a clip part thereof. The clip part comprises a clip and a clip tube, the tails of the two clips are accommodated in the clip tube, and the tail of the clip and the front end of the push-pull seat are provided. Actively connected, the clamp tube is provided with a stop portion for clamping the first protruding part of the tail of the clip, the rear end of the clamp tube is detachably connected to a shackle, and the shackle is provided with at least two elastic hooks Ring claw, the rear end of the clamp tube is formed with a first limit portion corresponding to the shackle claw, the clamp tube and the shackle are connected by the shackle claw and the first limit portion; the shackle has the function of shielding the stop position part of the shield. The invention can avoid that the tail of the clip is stuck on the clamp tube during the repeated opening and closing adjustment process of the clip.

Description

Clip device for use with endoscope and its holding part

technical field

The present invention relates to a clip device used in conjunction with an endoscope and a clip portion thereof, in particular, used for suturing surgical wounds under the endoscope to stop bleeding or preventing delayed bleeding, or for temporarily clipping tissues and fixing other instruments, or for location marking purposes.

Background technique

In the prior art, the following clamping devices or hemostatic forceps are used to clamp tissue to close wounds, stop bleeding or prevent delayed bleeding:

In the patent document with the patent application number CN201310272522.2 published in China, there is disclosed a hemostatic clip in which the push-pull seat and the clip are fixed by the elastic spring on the clamp tube wall in the release mode through the breaking of the connector. , the fixing method of the release clip of the device is exposed, there is a risk of loosening, and the clip release process is troublesome.

In the patent document with the patent application number CN201220250652.7 published in China, it is disclosed that a separation ring with a live ring is inserted into the elastic claw, and the separation ring is straightened to achieve the purpose of release. It is a hemostatic clip that is fixed by the concave ring of the storage tube. The force of the device to open the separation ring is perpendicular to the force of the separation ring, so it is more difficult to loosen the separation ring and the clip, and the storage tube and the handle are squeezed through the squeeze. The way of pressing and opening the jaws is released, and the operation is laborious with complex structure.

In the patent document with the patent application number CN201410222753.7 published in China, it is disclosed that a clamping arm is provided with a chute in the middle. A hemostatic clip. The clamping arm of the device is grooved, which increases the difficulty and cost of processing, and the special shape of the clamping arm makes the clamping arm less elastic and the clamping is not firm; in addition, the deformation of the wire buckle makes the wire buckle and the clamping If the arm is loose, due to the opening gap of the wire buckle, it may accidentally loose when the clip body is repeatedly pushed, which affects the stability of use.

In the patent document with the patent application number US8062311B2 published in the United States, there is disclosed a hemostatic clip which requires a yoke to restrain the advance and stop of the clip, and the yoke remains in the patient's body and has a barb hole on the clip tube. There is also the problem of inconvenience.

It can be seen from the above that the release of the existing clip device is achieved by the connecting piece or the connecting piece, or the breaking method of other structural parts to realize the separation of the clamping part and the releasing part. It is more complicated, and various functions are scattered in different parts, resulting in poor process reliability, many parts remaining in the patient's body, and the total length after clamping is relatively long. Therefore, the patent document with the publication number of CN108013914A discloses an improved hemostatic clip used under the endoscope. The push-pull seat is placed in the clamp tube and can move back and forth, the connecting tube is fixed at the rear end of the push-pull seat, the clip is an elastic metal sheet, and the tail of the clip is provided with an open The connecting pin penetrates the holes of the two clips and is fixed to the front end of the push-pull seat, and one side of the hole at the tail of the clip is provided with a first protrusion that is folded outwards; The end of the wall is provided with a stop portion, when the two clips are clamped, the protruding portion of the tail of the clip is clamped on the stop portion, and the stop pin is fixed at the front of the clamp tube to limit the push and pull The seat slides out of the clamp tube. In this structure, there are reinforcing ribs on the clips, the clamping force is large, and no broken fragments are released, which can realize a larger opening and reduce the length of the retention section. However, the inventor believes that in this structure, there are many parts and components, the assembly structure is complex, the process steps are many, and the movable positioning between the clip and the push-pull seat is not reliable enough, and the surgical operation is not convenient and reliable enough. cost. The Chinese patent document with publication number CN110464410A is improved based on the previous patent, and discloses a clamp device and its clamping part that is practical for matching with an endoscope. Radial pin parts protrude to the left and right sides respectively, and the tail parts of the two clips are respectively sleeved on the two radial pin parts through holes so as to realize the active connection between the clip and the push-pull seat. This solution has few parts. , The structure is simple and the assembly is simple. During the separation process, the tail of the clip is symmetrically bounced, and no debris remains, but the movable positioning between the clip and the push-pull seat is still not reliable enough. During the process of opening and closing or rotating, the tail of the clip has a certain amount. There is a high probability that the clip will bounce off and be stuck on the stop, which is not conducive to the repeated opening and closing of the clip.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the first object of the present invention is to provide a clamping part of a clamp device used in conjunction with an endoscope, which can avoid the clamp piece being stuck on the clamp tube during the repeated opening and closing process.

The second object of the present invention is to provide a clip device for use with an endoscope, the device has the above-mentioned clip portion, and has strong structural stability.

Based on the above purpose, one aspect of the present invention provides a clamping part of a clamp device used with an endoscope, comprising a clamp piece and a clamp tube, the clamp piece is an elastic metal piece, and the tails of the two clamp pieces are stored in the clamp In the pliers, the tail of the clip is provided with an open hole and a first protrusion protruding outward, the tail of the clip is movably connected with the front end of the push-pull seat through the hole, and the rear end of the push-pull seat is connected to the mandrel, and the push-pull seat is connected to the mandrel. It is placed in the clamp tube and can move back and forth. The clamp tube is provided with a stop part for clamping the first protruding part of the tail of the clamp piece. The rear part of the clamp tube is connected with a detachable shackle. It is sleeved on the mandrel or the push-pull seat, and the outer diameter of the push-pull seat is larger than the central hole of the shackle, so as to drive the shackle to move backward; the shackle is provided with at least two elastic shackle claws, and the clamp tube A first limit portion corresponding to the shackle claw is formed at the rear end, and the clamp tube and the shackle are connected by the shackle claw and the first limit portion; When the clamp tube is connected with the shackle, the shielding portion of the shackle is inserted into the clamp tube and shields the stop portion to prevent the first protruding portion of the clip from being clamped on the stop portion.

Preferably, the stop part is a stop step or a window hole arranged on the inner wall of the middle rear part of the clamp pipe; when the clamp pipe is connected with the shackle, the shielding part of the shackle covers the window hole in the clamp pipe or stop steps.

Preferably, the first limiting portion is a penetration hole or a concave circumferential groove provided at the rear end of the clamp pipe; when the clamp pipe is connected with the shackle, the shackle claws penetrate into the penetration hole or embedded in the circumferential groove.

Preferably, the front end of the push-pull seat is provided with a connecting part, the front part of the connecting part protrudes to the left and right sides respectively to form radial pins, and the tail parts of the two clips are respectively sleeved on the two radial pins through holes to realize Active connection between clip and push-pull seat.

Preferably, the outer end of the radial pin is formed with a second protruding portion, and the second protruding portion, the pin body and the connecting portion of the radial pin together form a limiting groove for connecting the clips. In this way, the two sides of the tail hole of the clip are respectively clamped in the limiting groove, so as to prevent the clip from being separated from the push-pull seat during repeated opening and closing.

Preferably, the outer end of the radial pin extends to both sides to form the second raised portion, so that the second raised portion and the radial pin form a T-shaped structure, and the T-shaped structure and the connecting portion to enclose the limit groove.

Preferably, the outer end of the radial pin extends radially to form a second raised portion, and the lateral dimension of the second raised portion is larger than the radial dimension of the hole, so that the second raised portion, radially The pin and the connecting portion together form a limiting groove, so that when the radial pin is inserted into the hole at the end of the clip, the side edge of the hole is snapped into the limiting groove.

Preferably, the cross-sectional shape of the radial pin is non-circular, and the hole at the tail of the clip has a shape matching the radial pin, so as to limit the rotation range of the tail of the clip relative to the push-pull seat.

Preferably, the side of the second protruding portion close to the radial pin is gradually thinned into a gentle slope shape from back to front, so as to reduce the difficulty of assembling or disengaging between the radial pin and the hole.

Preferably, the shielding part of the shackle is cylindrical, and the claws of the shackle are arranged on the side wall of the cylindrical shielding part; two windows are oppositely arranged on the side wall of the cylindrical shielding part, and the inner The shackle claw is provided, and the rear end of the shackle extends into the swivel seat and is limited.

Another aspect of the present invention provides a clip device for use with an endoscope. The clip device includes an operation part, a release part and the above-mentioned holding part.

Compared with the prior art, the beneficial effects of the present invention are:

1. When the shackle is connected to the clamp tube, the shackle always covers the stop part of the clamp tube, so that during the opening and closing of the clip, even if the tail of the clip springs open, the tail will not be stuck in the stop. This allows the clip in the solution of the present invention to be repeatedly opened and closed, and at the same time, because the shackle covers the stop portion, the clip can be opened again under the condition that the radial direction in the clamp tube is not restricted;

2. The outer end of the radial pin extends to both sides to form a second protruding portion, and the left and right ends of the second protruding portion are located on both sides of the hole, so that during the opening and closing or rotation of the clip, the The second protruding part can prevent the tail of the clip from bouncing, so that the clip can be opened and closed repeatedly without being stuck on the clamp tube, and the structural stability is good;

3. During the separation process, the tail of the clip is symmetrically bounced, no parts are broken, no debris remains, and the symmetrical raised barb at the tail of the clip has higher stability.

Description of drawings

The accompanying drawings that constitute a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute a limitation to the present application.

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

Fig. 2 is the structural representation of the clip in the embodiment of the present invention;

3 is a schematic diagram 1 of the appearance retained after the clip device in the embodiment of the present invention is clipped;

4 is a schematic diagram 2 of the external appearance retained after the clip device is clipped in the embodiment of the present invention;

Figure 5 is a schematic diagram of the clip device being clipped and separated in the embodiment of the present invention;

6 is a schematic diagram of a shackle and a cross-sectional structure thereof in an embodiment of the present invention;

FIG. 7 is a schematic diagram one of the clamping tube and its cross-sectional structure in the embodiment of the present invention;

FIG. 8 is a second schematic diagram of the clamping tube and its cross-sectional structure in the embodiment of the present invention;

9 is a schematic diagram three of the clamping tube and its cross-sectional structure in the embodiment of the present invention;

Figure 10 is a schematic structural diagram 1 of a push-pull seat in an embodiment of the present invention;

Fig. 11 is the first structural schematic diagram of the push-pull seat in the embodiment of the present invention;

Figure 12 is a side view of the structure shown in Figure 11;

13 is a second structural schematic diagram of the push-pull seat in the embodiment of the present invention;

FIG. 14 is a side view of the structure shown in FIG. 13 .

Among them, 1, clip; 2, clamp tube; 3, push-pull seat; 4, shackle; 5, swivel seat; 6, mandrel; 7, spring hose; 8, runner; 9, push tube; 10. Sliding handle; 11. Handle;

110, claw end; 120, forearm; 121, shoulder; 130, rear arm; 131, arch connection; 140, tail; 141, hole; 142, first protrusion;

210, through hole; 211, circumferential groove; 220, stop step; 221, window hole; 230, blocking part;

300, connecting part; 310, radial pin; 311, second protruding part; 320, limiting groove; 330, protecting wing;

410, hook and loop claw.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

Furthermore, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front" , "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc. indicate the orientation or position relationship as Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood to limit the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise expressly defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1

As shown in FIG. 1 , a clamping part of a clamp device for use with an endoscope includes a clamp piece 1 and a clamp tube 2 , the clamp piece 1 is an elastic metal sheet, and the tails 140 of the two clamp pieces 1 are accommodated in the clamp In the pliers 2 (as shown in Figures 3 and 4), as shown in Figure 2, the tail 140 of the clip 1 is provided with an open hole 141 and a first protrusion 142 protruding outward. 140 is movably connected to the front end of the push-pull seat 3 through the hole 141, and the rear end of the push-pull seat 3 is connected to the mandrel 6. The push-pull seat 3 is placed in the clamp tube 2 and can move back and forth. As shown in Figure 5, the clamp The clamp tube 2 is provided with a stop portion for clamping the first protruding portion 142 of the tail portion 140 of the clip 1, and a detachable shackle 4 is connected to the rear of the clamp tube 2, and the shackle 4 is sleeved on the mandrel 6 Or on the push-pull seat 3, the outer diameter of the push-pull seat 3 is larger than the central hole of the shackle 4 so as to drive the shackle 4 to move backward; the shackle 4 is provided with at least two elastic shackle claws 410, the clamp The rear end of the tube 2 is formed with a first limit portion corresponding to the shackle claws 410, and the clamp tube 2 and the shackle 4 are connected by the shackle claws 410 and the first limit portion; wherein, as shown in the figure As shown in 6, the shackle 4 has a shielding portion. When the clamping tube 2 is connected with the shackle 4, the shielding portion of the shackle 4 is inserted into the clamping tube 2 and shields the stop portion to avoid clipping. The first protruding portion 142 of 1 is clamped on the stop portion.

As a further embodiment, the shielding portion of the shackle 4 is cylindrical, and the shackle claws 410 are arranged on the side wall of the cylindrical shielding portion; There are two opening windows, and the shackle claws 410 are arranged in the opening windows. In this embodiment, the shackle 4 has a plurality of ring parts with different outer diameters, wherein the thin ring part with a smaller outer diameter is a shielding part, and two or more elastic shackle claws are formed on the side of the thin ring part. 410.

As a further embodiment, the stop portion is provided at the middle and rear of the clamp tube 2. When the clamp tube 2 is connected with the shackle 4, the front end of the shackle 4 can cover the stop This prevents the first protruding portion 142 of the clip 1 from being stuck on the stop portion during the repeated opening and closing of the clip 1 .

As a preferred embodiment, as shown in FIG. 7 , the stop portion is a stop step 220 disposed on the inner side of the middle rear of the clamp tube 2 , or, preferably, the stop portion can also be As shown in FIG. 8, two or more viewing window holes 221 are symmetrically arranged at the rear of the clamping tube 2; when the clamping tube 2 is connected with the shackle 4, the front end of the shackle 4 shields the clamping tube 2 in the window hole 221 or on the stop step 220.

As shown in FIG. 2 , the clip 1 includes a forearm 120 and a rear arm 130 , the end of the forearm 120 is a claw end 110 , the two wings of the forearm 120 are provided with shoulders 121 , the claw end 110 is serrated, and When the two clips 1 are clamped, the claw ends 110 are engaged with each other. The front arm 120 and the rear arm 130 of the clip 1 are connected by an arched connecting portion 300131, and the end of the rear arm 130 is the tail of the clip 1. 140, the hole 141 of the tail 140 of the clip 1 is preferably a "C"-shaped opening, and the opening direction is toward the rear end; the rear arm 130 of the clip 1 can be received into the clip tube 2, and the clip tube 2 The front part is provided with a blocking piece 230 that restricts the push-pull seat 3 from sliding out of the clamping tube 2 . In this way, the welding process can be saved and the manufacturing cost can be reduced.

As a preferred embodiment of the first limiting portion, as shown in FIG. 7 and FIG. 9 , the rear end of the clamp tube 2 is formed with a penetrating hole 210 corresponding to the shackle claws 410 , or, in the In other preferred embodiments, as shown in FIG. 8 , this part may also be: the rear end of the clamping tube 2 is recessed inwardly to form a circumferential groove 211 corresponding to the shackle claws 410 ; the clamping tube The rear end of 2 and the shackle 4 are connected by the shackle claws 410 penetrating into the through hole 210 or embedded in the circumferential groove 211 .

As a preferred embodiment, as shown in FIG. 10 , the front end of the push-pull seat 3 is provided with a connecting portion 300. The front portion of the connecting portion 300 protrudes to the left and right sides respectively to form radial pins 310, two clips The tails 140 of the 1 are respectively sleeved on the two radial pins 310 through the holes 141 so as to realize the movable connection between the clip 1 and the push-pull seat 3 .

As a preferred embodiment, the outer end of the radial pin 310 extends to the side to form a second raised portion, the second raised portion, the pin body of the radial pin 310 and the connecting portion 300 together enclose A limiting slot 320 is formed, in this way, the two sides of the hole 141 of the tail 140 of the clip 1 are respectively clamped in the limiting slot 320, thereby preventing the clip 1 from separating from the push-pull seat 3 during repeated opening and closing. Preferably, as shown in FIG. 10 , the radius of curvature of the front end of the radial pin 310 is greater than the radius of curvature of the rear end of the radial pin 310 to reduce the difficulty of assembling or disengaging the radial pin 310 from the hole 141 .

As a preferred embodiment, the outer end of the radial pin 310 extends laterally in a straight line to form the second protruding portion, so that the second protruding portion and the radial pin 310 are formed As shown in FIG. 11 and FIG. 12 , the T-shaped structure and the connecting portion 300 form the limiting groove 320 .

As shown in FIG. 13 and FIG. 14 , the outer end of the radial pin 310 extends radially to form a second convex portion, and the lateral dimension of the second convex portion is larger than the radial dimension of the hole 141 , so that The second protruding portion, the radial pin 310 and the connecting portion 300 together form a limiting groove 320. In this way, when the radial pin 310 is inserted into the hole 141, the side of the hole 141 is locked into the limiting groove. within 320.

As a preferred embodiment, the cross-sectional shape of the radial pin 310 is non-circular, and the hole 141 of the tail portion 140 of the clip 1 has a shape that matches the radial pin 310, so as to limit the opposite direction of the tail portion 140 of the clip 1 the rotation range of the push-pull seat 3;

As a preferred embodiment, the side of the second raised portion close to the radial pin 310 is gradually thinned into a gentle slope shape from the back to the front, so as to reduce the assembly or the fit between the radial pin 310 and the hole 141 . out of difficulty.

Preferably, the push-pull seat 3 is preferably manufactured by casting, and can also be manufactured by other machining methods. The cross-sectional shape of the radial pin 310 can be circular, oval, square, rectangular, polygonal or other special shapes, etc., but is preferably non-circular to limit the rotation of the clip 1. In other embodiments, the outer diameter of the radial pin 310 in the front-rear direction (matching the opening distance of the hole 141 of the tail 140 of the clip 1) is significantly smaller than the outer diameter in other directions, so that when the clip 1 is installed, it is possible to Insert the opening of the hole 141 of the tail 140 of the clip 1 into the radial pin 310 along the direction perpendicular to the front-rear direction and then rotate it by 90°, so that the claw end 110 of the clip 1 faces forward and the hole 141 of the tail 140 of the clip 1 is the same as the diameter. A snap connection is realized to the pin 310 to facilitate installation and fabrication. The clamp tube 2 and the clip 1 are made of metal blanking parts. The blocking part 230 on the clamp tube 2 is formed by later bending, and the first protruding part 142 on the clip 1 can be formed together with the clip 1. Or formed by later bending. Preferably, the tail portion 140 of the clip 1 is provided with two first protruding portions 142 protruding outward. When the tail portion 140 of the clip 1 is accommodated in the gap, the two first protruding portions 142 are located on the protective wings respectively. The two sides of the 330 thus limit the rotation range of the tail portion 140 of the clip 1 relative to the push-pull seat 3 . In this way, the three-dimensional positioning of the clip 1 and the push-pull seat 3 is realized, the structure is simple and reliable, and the operation is convenient, and when the two clips 1 are clamped, each clip 1 is clamped by the two first protrusions 142 It is connected to the stop part of the inner wall of the tail of the clamp pipe 2, so that the clamping is more stable and reliable.

This embodiment also provides a clip device for use with an endoscope, the clip device includes an operation part, a release part and the above-mentioned clip part;

The distal end of the mandrel 6 in the operating part is fixedly connected with the connecting pipe in the clamping part, the mandrel 6 is sleeved with a spring hose 7 in the release part, and the proximal end of the spring hose 7 is connected to the operating part, and the spring The distal end of the hose 7 is fixed to the swivel base 5 in the release part, the swivel base 5 is mounted with a shackle 4, and the shackle 4 is detachably connected to the clamp tube 2; the operating part pulls the mandrel 6 to drive the push-pull seat 3. Move back to clamp the clip 1, the clip 1 is limited by the clamping tube 2, continue to pull the mandrel 6, and the radial pin 310 on the push-pull seat 3 deforms the hole 141 of the tail 140 of the clip 1 and causes the two Separation, the tail portion 140 of the clip 1 is elastically opened, and the first protruding portion 142 of the tail portion 140 of the clip 1 is buckled on the stop portion of the clamp tube 2;

The operating part includes a mandrel 6 , a runner 8 , a push tube 9 , a sliding handle 10 and a handle 11 , the sliding handle 10 can slide on the handle 11 , and the sliding handle 10 passes through the push tube 9 and the proximal end of the mandrel 6 . connection, the runner 8 is sleeved on the mandrel 6 and can drive the mandrel 6 to rotate, the mandrel 6 can move back and forth in the flat hole of the runner 8, the proximal end of the spring hose 7 in the release part and the handle 11 Fixed connection;

The release part includes a swivel seat 5 and a spring hose 7, the shackle 4 is set on the swivel seat 5 through a limit step, and the rear end of the clamp tube 2 and the shackle 4 are penetrated by the shackle claws 410. The penetration hole 210 is embedded in the circumferential groove 211 for connection, and the mandrel 6 drives the connecting pipe or the push-pull seat 3 to take away the shackle claws 410 on the shackle 4, so that the clamping pipe 2 can be connected with the shackle 4. The shackle 4 is separated; the shaft portion of the shackle 4 is formed with a middle hole, the diameter of the middle hole is larger than the outer diameter of the mandrel 6 , and the diameter of the middle hole is smaller than the outer diameter of the connecting pipe or the maximum outer diameter of the push-pull seat 3 .

When in use, the sliding handle 10 slides in the chute of the handle 11, and its forward movement can push the mandrel 6 to drive the push-pull seat 3 to move forward, so that the clip 1 extends out of the clamp tube 2 to achieve the purpose of opening the clip 1. , as shown in Figure 1; the back movement can pull the mandrel 6 to drive the push-pull seat 3 to move backward, so that the clip 1 is retracted into the clamp tube 2 to achieve the purpose of closing the clip 1, and the sliding handle 10 continues to move backward, Pulling the mandrel 6 drives the push-pull seat 3 to move backward, the radial pin 310 on the push-pull seat 3 deforms and separates the hole 141 of the tail portion 140 of the clip 1, and the tail portion 140 of the two clips 1 and the push-pull seat 3 are separated elastically after separation, The first protrusion 142 of the tail 140 of the clip 1 is buckled on the stop step of the clamp tube 2, the mandrel 6 continues to move backward, and the push-pull seat 3 is taken away from the elastic hook, so that the clamp tube 2 is separated from the swivel, As shown in Figure 5, the release of the clip was achieved, and no part breakage occurred from beginning to end, and no debris remained.

Based on the above, this embodiment has the following advantages:

1. When the shackle is connected to the clamp tube, the shackle always covers the stop part of the clamp tube, so that during the opening and closing of the clip, even if the tail of the clip springs open, the tail will not be stuck in the stop. This allows the clip in the solution of the present invention to be repeatedly opened and closed, and at the same time, because the shackle covers the stop portion, the clip can be opened again under the condition that the radial direction in the clamp tube is not restricted;

2. A second protrusion is formed at the outer end of the radial pin, and the left and right ends of the second protrusion are located on both sides of the hole, so that during the opening and closing or rotation of the clip, the second protrusion is It can prevent the tail of the clip from bouncing open, so that the clip can be opened and closed repeatedly without being stuck on the clamp tube, and the structural stability is good;

3. During the separation process, the tail of the clip is symmetrically bounced, no parts are broken, no debris remains, and the symmetrical raised barb at the tail of the clip has higher stability.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those of ordinary skill in the art will not depart from the principles and spirit of the present invention Under the circumstance of the present invention, the above-described embodiments can be changed, modified, replaced and modified within the scope of the present invention, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention within the scope of the technical solution.

Claims (10)

1. A clamping part of a clamp device used in conjunction with an endoscope, comprising a clamping piece (1) and a clamping tube (2), the clamping piece (1) is an elastic metal sheet, and the tail of the two clamping pieces (1) (140) is accommodated in the clamping tube (2), the tail (140) of the clamping piece (1) is provided with an open hole (141) and a first protruding portion (142) protruding outward, the clamping piece (1) The rear end (140) of the push-pull seat (3) is movably connected to the front end of the push-pull seat (3) through the hole (141), the rear end of the push-pull seat (3) is connected to the mandrel (6), and the push-pull seat (3) is placed on the clamp tube (2). ) and can move back and forth, the clamp pipe (2) is provided with a stop part for clamping the first protrusion (142) of the tail (140) of the clamp piece (1), and the clamp pipe (2) The rear part is connected with a detachable shackle (4), the shackle (4) is sleeved on the mandrel (6) or the push-pull seat (3), and the outer diameter of the push-pull seat (3) is larger than the center of the shackle (4) The hole can drive the shackle (4) to move backward; the shackle (4) is provided with at least two elastic shackle claws (410), and the rear end of the clamp tube (2) is formed with the hook The first limit portion corresponding to the ring claw (410), the clamp tube (2) and the shackle (4) are connected to the first limit portion through the shackle claw (410); it is characterized in that the The shackle (4) has a shielding part, and when the clamping tube (2) is connected with the shackle (4), the shielding part of the shackle (4) is inserted into the clamping tube (2) and shields the stop part Thus, the first protruding portion (142) of the clip (1) is prevented from being clamped on the stop portion. 2 . The clamping part of a clamp device used with an endoscope according to claim 1 , wherein the stop part is a stop step arranged on the inner wall of the rear part of the clamp tube ( 2 ). 3 . (220) or window hole (221); when the clamping tube (2) is connected with the shackle (4), the shielding part of the shackle (4) covers the window hole (221) in the clamping tube (2) or Stop step (220). 3 . The clamping part of a clamp device used in conjunction with an endoscope according to claim 1 , wherein the first limiting part is a penetration hole ( 210) or a concave circumferential groove (211); when the clamping tube (2) is connected with the shackle (4), the shackle claws (410) penetrate into the through holes (210) or are embedded in in the circumferential groove (211). 4. The clamping part of a clip device used with an endoscope according to claim 1, characterized in that a connecting part (300) is provided at the front end of the push-pull seat (3), and the front end of the connecting part (300) is provided with a connecting part (300). The radial pins (310) are formed to protrude from the left and right sides respectively, and the tails (140) of the two clips (1) are respectively sleeved on the two radial pins (310) through the holes (141) to realize the clipping. Active connection between the sheet (1) and the push-pull seat (3). 5 . The clamping part of a clip device used with an endoscope according to claim 4 , wherein the outer end of the radial pin ( 310 ) is formed with a second protrusion, the first The two protruding portions, the pin body of the radial pin (310) and the connecting portion (300) together form a limiting groove (320) for connecting the clip (1). 6 . The clamping part of a clip device used with an endoscope according to claim 5 , wherein the outer ends of the radial pins ( 310 ) extend to both sides to form the second protrusions. 7 . Therefore, the second raised portion and the radial pin (310) form a T-shaped structure, and the T-shaped structure and the connecting portion (300) enclose the limiting groove (320). 7 . The clamping part of a clip device used with an endoscope according to claim 5 , wherein the outer end of the radial pin ( 310 ) extends radially to form the second protrusion. 8 . and the lateral dimension of the second raised portion is larger than the radial dimension of the hole (141), so that the second raised portion, the radial pin (310) and the connecting portion (300) together form a limiting groove ( 320), in this way, when the radial pin (310) is inserted into the hole (141) of the tail (140) of the clip (1), the side of the hole (141) is snapped into the limiting groove (320) Inside. 8 . The clamping part of a clip device used with an endoscope according to claim 4 , wherein the cross-sectional shape of the radial pin ( 310 ) is non-circular, and the tail of the clip ( 1 ) is in the shape of a non-circle. The hole (141) of (140) has a shape matching with the radial pin (310), so as to limit the rotation range of the tail (140) of the clip (1) relative to the push-pull seat (3). 9. The clamping part of a clip device used with an endoscope according to claim 1, wherein the shielding part of the shackle (4) is cylindrical, and the shackle (410) It is arranged on the side wall of the cylindrical shielding part; two windows are oppositely arranged on the side wall of the cylindrical shielding part, and the shackle claws (410) are arranged in the windows; the rear end of the shackle (4) Protrudes into the swivel seat (5) and is limited. 10 . A clip device for use with an endoscope, characterized in that it comprises an operating part, a releasing part and the clipping part according to any one of claims 1 to 9 . 11 .

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