Hemostatic clip for endoscope

Abstract

The utility model discloses a hemostatic clip for an endoscope, and belongs to the technical field of medical instruments, the hemostatic clip for the endoscope comprises a clip seat, a plurality of clip pieces and a movable pin, the clip seat is provided with a channel and a guide groove communicated with the channel, and the channel penetrates through the clip seat along a first direction; at least part of the clamping piece is arranged in the channel; the movable pin comprises a body and two first limiting parts, the body penetrates through the channel and the guide groove and is connected with the multiple clamping pieces, and the two first limiting parts are connected with the body and abut against the clamping base; the movable pin is configured to be capable of moving along the guide groove when bearing force in the first direction and driving the multiple clamping pieces to move between the closing position and the opening position relative to the clamping base. The movable pins capable of moving in the guide grooves are arranged to guide the clamping pieces, and the orientation change of the clamping pieces in the moving process is avoided. In addition, the first limiting part is arranged to limit the movement of the movable pin, so that the operation of the hemostatic clip is easier.

Description

Technical Field

[0001] The present application belongs to the field of medical devices, and specifically relates to a hemostatic clip for an endoscope. Background Art

[0002] Hemostasis with hemostatic clips is a physical hemostasis, that is, the tissues and bleeding vessels around the wound are clamped and fixed by the closing force between the clips of the hemostatic clips, thereby achieving the effect of hemostasis. In actual use, the hemostatic clip is sent to the lesion site through the clamp channel of the endoscope, and pressure is applied to the hemostatic clip to make it squeeze the body tissue, and then the hemostatic clip is used to ligate the wound surface, and then the hemostatic clip is released to achieve the purpose of lasting hemostasis.

[0003] However, when the hemostatic clip is used to squeeze body tissue, the clip of the hemostatic clip may shake, causing the orientation of the clip to change, making the hemostatic clip difficult to use. Utility Model Content

[0004] Purpose of the utility model: The present application provides a hemostatic clip for an endoscope, which is used to solve the technical problem of the change in the orientation of the clip when the hemostatic clip squeezes body tissue.

[0005] Technical solution: This application provides a hemostatic clip for an endoscope, comprising:

[0006] A clamping seat, wherein the clamping seat has a channel and a guide groove communicating with the channel, and the channel penetrates the clamping seat along a first direction;

[0007] a plurality of clips, at least a portion of the clips being disposed within the channel;

[0008] A movable pin, comprising a body and two first limiting parts, wherein the body is inserted into the channel and the guide groove and connected to the plurality of clips, and the two first limiting parts are connected to the body and respectively abut against the clip seat;

[0009] The movable pin is configured to move along the guide groove when subjected to a force along the first direction, and drive the plurality of clips to move between a closed position and an open position relative to the clip seat.

[0010] In some embodiments, when the plurality of clips move between the closed position and the open position relative to the clip seat, each of the clips can move relative to another of the clips along the second direction;

[0011] The extending direction of the movable pin is inclined to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In some embodiments, the movable pin extends along the second direction.

[0013] In some embodiments, the clamp seat also has a plurality of limiting holes connected to the channel, and the clip includes a second limiting portion, and the second limiting portion of each of the clips can be passed through one of the limiting holes to lock the positions of the plurality of clips relative to the clamp seat.

[0014] In some embodiments, the clip further comprises:

[0015] A clamping portion, wherein in the closed position, the clamping portions of the plurality of clips are closed to each other, and in the open position, the clamping portions of the plurality of clips are away from each other;

[0016] A first connection portion, wherein the first connection portion is connected to the proximal end of the clip, the first connection portion is connected to the movable pin, and the second limiting portion is connected to a side of the first connection portion away from the clamping portion.

[0017] In some embodiments, at least a portion of the second limiting portion is protruding relative to the clip toward a direction away from the other clip.

[0018] In some embodiments, the hemostatic clip for endoscope further includes a control component, at least a portion of which is located in the channel, and the movable pin is connected to the control component; the control component can move along the channel relative to the clamp seat to drive the movable pin to move.

[0019] In some embodiments, the control component has a first assembly hole, the movable pin is inserted into the first assembly hole, the control component includes a weak portion, the weak portion is arranged at the distal end of the control component, and the weak portion is configured to separate the movable pin from the control component when the movable pin is located at the proximal end of the guide groove and the control component is subjected to a tensile force greater than or equal to a preset tensile force.

[0020] In some embodiments, the weak portion is provided with one or more of a notch, a groove, and a hole.

[0021] In some embodiments, the control component further has a second through slot, the second through slot is communicated with the first assembly hole, and the second through slot is arranged on a side of the first assembly hole away from the weak portion.

[0022] In some embodiments, the control assembly includes two third connecting parts, and a portion of the plurality of clips is disposed between the two third connecting parts;

[0023] When the movable pin is separated from the control assembly, the proximal end of the clip is not constrained by the third connecting portion and is released, and moves toward the clip seat.

[0024] In some embodiments, the hemostatic clip for endoscope comprises a catheter and a locking member, the control assembly is passed through the catheter, the catheter has a first connecting hole, the clamp seat has a second connecting hole, and the locking member is passed through the first connecting hole and the second connecting hole to connect the catheter and the clamp seat;

[0025] When the movable pin is separated from the control assembly and the control assembly is subjected to a preset pulling force, the control assembly can abut and push the locking member to disengage the locking member from the first connecting hole and the second connecting hole, so as to separate the catheter and the clamp seat.

[0026] In some embodiments, the hemostatic clip for endoscope further comprises:

[0027] A spacer portion is connected to the clamp seat and is arranged in the channel. The spacer portion is located between the multiple clips. When the clips move from a closed position to an open position, the spacer portion can squeeze the multiple clips to make the multiple clips move away from each other.

[0028] In some embodiments, an outer wall of the clamp seat has an avoidance groove, the guide groove is connected to the avoidance groove, and the first limiting portion is located in the avoidance groove.

[0029] In some embodiments, the movable pin can move along the guide groove to a locking position so that the plurality of clips are closed to each other and locked relative to the clamp seat;

[0030] The hemostatic clip for endoscope further comprises a catheter, the catheter is connected to the clamp seat, and the catheter is configured to be separated from the clamp seat by a tensile force greater than or equal to a preset tensile force;

[0031] Control Component At least part of the control component is passed through the catheter, the control component is connected to the movable pin, and the control component is configured to be able to separate from the movable pin when subjected to a tensile force greater than or equal to a preset tensile force.

[0032] Beneficial effects: Compared with the prior art, the hemostatic clip for endoscope provided in the embodiment of the present application includes a clip seat, a plurality of clips and a movable pin, the clip seat has a channel and a guide groove connecting the channel, the channel passes through the clip seat along the first direction; at least part of the clip is arranged in the channel; the movable pin includes a body and two first limiting parts, the body is arranged in the channel and the guide groove, and is connected with the plurality of clips, the two first limiting parts are used to abut against the clip seat to limit the movable pin, and are connected with the body; the movable pin is configured to be able to move along the guide groove when subjected to a force along the first direction, and drive the plurality of clips to move between a closed position and an open position relative to the clip seat. The present application guides the clip by setting a movable pin that can move in the guide groove to avoid the change of the orientation of the clip during the movement. In addition, by setting a first limiting part on the movable pin to limit the movement of the movable pin, the clip is further guided to obtain a better guiding effect, thereby making the operation of the hemostatic clip easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0034] Figure 1 A schematic diagram of the structure of a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0035] Figure 2 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application in one direction;

[0036] Figure 3 A cross-sectional view of the hemostatic clip for an endoscope provided in an embodiment of the present application at another angle;

[0037] Figure 4 for Figure 3 Detailed view of the center circle A;

[0038] Figure 5 A cross-sectional view of the hemostatic clip for an endoscope provided in an embodiment of the present application from another direction;

[0039] Figure 6 An exploded schematic diagram of a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the structure of a clip in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the structure of a control component in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0042] Fig. 9A schematic structural diagram of a clamp seat in a hemostatic clamp for an endoscope provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of the structure of a locking member in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0044] Fig.11 A schematic diagram of the structure of a catheter in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0045] Fig.12 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the clip is closed;

[0046] Fig.13 for Fig.12 Detailed view of the center circle B;

[0047] Fig.14 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the clip is locked;

[0048] Fig.15 for Fig.14 Detailed view of the center circle C;

[0049] Fig.16 A schematic diagram of the structure of a control component in a hemostatic clip for an endoscope provided in another embodiment of the present application;

[0050] Fig.17 A schematic diagram of the structure of a hemostatic clip for an endoscope provided in another embodiment of the present application when a control component is deformed;

[0051] Fig.18 A front view of a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0052] Fig.19 For another example Figure 3 Detail of point A in the center circle.

[0053] Figure markings, 1-clamp seat, 11-channel, 12-guide groove, 13-limiting hole, 14-avoidance groove, 15-second connecting hole, 2-clip, 21-second limiting part, 22-clamping part, 23-first connecting part, 3-movable pin, 31-main body, 32-first limiting part, 4-control component, 41-pull cable, 42-pull buckle, 421-first assembly hole, 422-weak part, 423-first through groove, 424-second through groove, 425-third connecting part, 5-conduit, 51-first connecting hole, 6-locking piece, 61-claw, 62-base, 63-through hole, 7-spacer, 8-handle. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0056] It should also be noted that in the drawings of the embodiments of the present application, arrows marked with X, Y, and Z respectively represent the first direction X, the second direction Y, and the third direction Z. The description of the present application introduces the first direction X, the second direction Y, and the third direction Z in order to more clearly express the relative position relationship involved in the detection method, wherein the first direction X, the second direction Y, and the third direction Z are three relative directions that intersect with each other, rather than absolute directions. In actual applications, the first direction X, the second direction Y, and the third direction Z can point to any direction in space as long as the intersection relationship between the two is maintained.

[0057] In the description of the present application, it should be understood that the terms "proximal end" and "distal end" are used as reference objects by the surgical operator (doctor), wherein the "proximal end" is the end of the surgical tool closer to the operator, and the "distal end" is the end farther away from the operator relative to the "proximal end", that is, the end closer to the patient. The orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, and at least one refers to one, two or more, unless otherwise clearly and specifically defined.

[0058] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0059] Hemostasis with a hemostatic clip is a physical hemostasis, that is, the tissues and bleeding vessels around the wound are clamped and fixed by the closing force between the clips 2 of the hemostatic clip, thereby achieving the effect of hemostasis. In actual use, the hemostatic clip is sent to the lesion site through the clamp channel of the endoscope, and pressure is applied to the hemostatic clip so that the hemostatic clip squeezes the body tissue, and then the hemostatic clip is used to ligate the wound surface, and then the hemostatic clip is released to achieve the purpose of lasting hemostasis.

[0060] However, when the hemostatic clip is used to squeeze body tissue, the clip 2 of the hemostatic clip will shake, causing the orientation of the clip 2 to change, making it difficult to use the hemostatic clip. In order to solve the technical problem of the orientation change of the clip 2 when the hemostatic clip is squeezed into body tissue, the first embodiment of the present application provides a hemostatic clip for endoscopes, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 This is a schematic diagram of the structure of a hemostatic clip for an endoscope provided in an embodiment of the present application. Figure 2 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application in one direction. Figure 3 A cross-sectional view of the hemostatic clip for an endoscope provided in an embodiment of the present application from another direction, Figure 4 for Figure 2 Detailed view of the center circle A. Figure 5 A cross-sectional view of the hemostatic clip for an endoscope provided in an embodiment of the present application from another direction, Figure 6 A schematic diagram of a decomposed hemostatic clip for an endoscope provided in an embodiment of the present application, wherein the hemostatic clip for an endoscope comprises a clamp seat 1, a plurality of clips 2 and a movable pin 3, wherein the clamp seat 1 has a channel 11 and a guide groove 12 connected to the channel 11, and the channel 11 passes through the clamp seat 1 along a first direction X; at least a portion of the clip 2 is disposed in the channel 11; the movable pin 3 comprises a main body 31 and two first limiting portions 32, wherein the main body 31 passes through the channel 11 and the guide groove 12 and is connected to the plurality of clips 2, and the two first limiting portions 32 are connected to the main body 31 and respectively abut against the clamp seat 1; the movable pin 3 is configured to be able to move along the guide groove 12 when subjected to a force along the first direction X, and to drive the plurality of clips 2 to move between a closed position and an open position relative to the clamp seat 1.

[0061] Specifically, the above-mentioned "closed position" is the position of the multiple clips 2 when the multiple clips 2 are closed to each other; the above-mentioned "open position" is the position of the multiple clips 2 when the multiple clips 2 are opened to each other. When the movable pin 3 moves from the proximal end to the distal end along the first direction X, the multiple clips 2 move from the closed position to the open position relative to the clamping seat 1; when the movable pin 3 moves from the distal end to the proximal end along the first direction X, the multiple clips 2 move from the open position to the closed position relative to the clamping seat 1.

[0062] The guide groove 12 is used to limit the moving direction of the movable pin 3 , so that the movable pin 3 can only reciprocate between the proximal end and the distal end of the guide groove 12 .

[0063] In some embodiments, please refer again to Figure 4 , two first limiting portions 32 are respectively arranged on both sides of the clamp seat 1, the clamp seat 1 is located between the two first limiting portions 32, and the first limiting portion 32 is used to abut against the outer wall of the clamp seat 1 to limit the movable pin 3; in other embodiments, please refer to Fig.19 , Fig.19 For another example Figure 2 In the detailed view at the center circle A, two first limiting portions 32 are located in the channel 11 , and the first limiting portions 32 are used to abut against the inner wall of the clamp seat 1 to limit the movable pin 3 .

[0064] Further, at least one of the two first limiting portions 32 is detachably connected to the body 31 to facilitate the installation of the movable pin 3. Specifically, one of the first limiting portions 32 is an integral structure with the body 31, and the other of the first limiting portions 32 is detachably connected to the body 31. The first limiting portion 32 has a limiting surface, which is used to abut against the clamping seat 1 to limit the axial movement of the movable pin 3 and the rotation of the movable pin 3 around the axis extending along the third direction Z.

[0065] In some embodiments, the guide groove 12 extends along the first direction X so that the movable pin 3 can reciprocate along the first direction X.

[0066] In the above embodiment, the guide groove 12 is provided, and the movable pin 3 connected to the clip 2 is provided in the guide groove 12 to limit the movement direction of the clip 2, so as to prevent the clip 2 from changing its direction when it moves between the open position and the closed position. In addition, the first limiting portion 32 is provided, and the first limiting portion 32 is provided on both sides of the clamp seat 1 to prevent the movable pin 3 from rotating around the axis extending along the third direction Z, so as to prevent the clip 2 from rotating around the axis extending along the third direction Z, thereby further preventing the clip 2 from changing its direction.

[0067] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 3 , Figure 5and Figure 6 When the plurality of clips 2 move between the closed position and the open position relative to the clamp seat 1, each clip 2 can move relative to another clip 2 along the second direction Y; the extension direction of the movable pin 3 is inclined to the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0068] In the above embodiment, since the extension direction of the movable pin 3 is inclined to the third direction Z, and the second direction Y is perpendicular to the third direction Z, when the clip 2 tends to rotate around the axis extending along the second direction Y, the movable pin 3 can always generate a reaction force on the clip 2 to limit the clip 2 from rotating around the axis extending along the second direction Y, thereby better limiting the clip 2 and preventing the clip 2 from changing direction after being subjected to force.

[0069] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , the movable pin 3 extends along the second direction Y.

[0070] In the above embodiment, the movable pin 3 extending along the second direction Y can limit the rotation of the clip 2 around the axis extending along the second direction Y without hindering the proximal end of the clip 2, i.e., the part where the clip 2 is connected to the movable pin 3, from moving along the second direction Y, so as not to hinder the closing and opening of the clip 2.

[0071] In some embodiments, please refer again to Figure 1 , Figure 2 and Figure 5 , and see Fig. 9 and Fig.15 , Fig. 9 This is a schematic structural diagram of a clamp seat 1 for a hemostatic clamp used in an endoscope provided in an embodiment of the present application. Fig.15 for Fig.14 In the detailed view at the center circle C, the clamp seat 1 also has a limiting hole 13 connected to the channel 11, and the clip 2 includes a second limiting portion 21, which can be inserted into the limiting hole 13 to lock the positions of the plurality of clips 2 relative to the clamp seat 1.

[0072] Specifically, when the position of the clip 2 relative to the clip seat 1 is locked, the clip 2 can no longer move along the first direction X, that is, it can no longer move to the open position.

[0073] In the above embodiment, the second limiting portion 21 passing through the limiting hole 13 prevents the distal ends of the plurality of clips 2 from moving away from each other by limiting the displacement of the clip 2 along the first direction X, so that the plurality of clips 2 remain closed at all times after the hemostatic clip is released.

[0074] In some embodiments, after the clips 2 are closed, the movable pin 3 does not move to the nearest end of the guide slot 12. After the clips 2 are closed, the movable pin 3 continues to move toward the proximal end of the guide slot 12 to increase the clamping force between the multiple clips 2. By setting the second limiting portion 21 in the limiting hole 13, not only the closure of the clips 2 can be maintained, but also the clamping force between the clips 2 can be maintained, thereby preventing the hemostatic clip from falling off when stopping bleeding on a large wound.

[0075] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 5 and Fig. 9 The clamp seat 1 is provided with a plurality of limiting holes 13 , and the first limiting portion 32 of each clip 2 can be correspondingly penetrated into a limiting hole 13 , so that the positions of at least two clips 2 relative to the clamp seat 1 are locked.

[0076] In the above embodiment, by setting a plurality of limiting holes 13 to correspond to each clip 2 one by one, each clip 2 can be limited in the first direction X when the second limiting portion 21 is inserted into the limiting hole 13, so as to avoid the situation where some of the plurality of clips 2 are limited in the direction along the channel 11, while the other plurality of clips are not limited in the direction along the channel 11 and shake, resulting in a reduction in the clamping force between the plurality of clips 2 or even a situation where the plurality of clips 2 are opened from each other, thereby further avoiding the situation where the hemostatic clip is delayed from falling off during hemostasis.

[0077] In some embodiments, see Figure 7 , Figure 7 A schematic diagram of the structure of a clip 2 in a hemostatic clip for an endoscope provided in an embodiment of the present application, wherein the clip 2 also includes a clamping portion 22 and a first connecting portion 23. In a closed position, the clamping portions 22 of a plurality of clips 2 are closed to each other, and in an open position, the clamping portions 22 of a plurality of clips 2 are away from each other; the first connecting portion 23 is connected to the proximal end of the clip 2, the first connecting portion 23 is connected to the movable pin 3, and the second limiting portion 21 is connected to a side of the first connecting portion 23 away from the clamping portion 22.

[0078] Specifically, when in the open position, the clamping portions 22 of the multiple clips 2 are away from each other, and the ends of the first connecting portions 23 away from the clamping portions 22 are close to each other; when in the closed position, the clamping portions 22 of the multiple clips 2 are closed to each other, the ends of the first connecting portions 23 away from the clamping portions 22 are away from each other, and the second limiting portion 21 moves toward the inner wall of the clamp seat 1; when the clip 2 needs to be locked, after the buckle 42 in the control component 4 is disengaged from the movable pin 3, the buckle 42 is disengaged from the first connecting portion 23, and the limiting effect of the buckle 42 on the first connecting portion 23 is released, so that the first connecting portion 23 can be closer to the inner wall of the clamp seat 1, so as to send the second limiting portion 21 into the limiting hole 13 to achieve the limiting of the clip 2.

[0079] It can be understood that the closer the first connection part 23 is to the proximal end, the greater the movement amplitude is, that is, when in the closed position, the movement amplitude of the part near the proximal end of the first connection part 23 is greater than the movement amplitude of the part near the distal end. The nearest end of the first connection part 23 is the position where the first connection part 23 is closest to the inner wall of the clamp seat 1. In the above embodiment, by arranging the second limiting part 21 on the side of the first connection part 23 away from the clamping part 22, the second limiting part 21 has a larger range of movement and can be inserted deeper into the limiting hole 13, thereby preventing the second limiting part 21 from slipping out of the limiting hole 13, thereby making the locking effect of the clip 2 better, thereby further preventing the hemostatic clamp from falling off delayed during hemostasis.

[0080] In some embodiments, please refer again to Figure 7 At least a portion of the second limiting portion 21 is protruding relative to the clip 2 in a direction away from the other clip 2 .

[0081] When the clip 2 moves from the open position to the closed position, the first connection portion 23 moves away from the first connection portion 23 of the other clip 2 to approach the inner wall of the clamp seat 1. In the above embodiment, at least a portion of the second limiting portion 21 is protruded relative to the clip 2 in a direction away from the other clip 2 so that when the clip 2 moves from the open position to the closed position, it can be more easily inserted into the limiting hole 13, so that the clip 2 is locked.

[0082] In some embodiments, please refer again to Figure 7 A crack-stopping groove is formed between the first connecting portion 23 and the second limiting portion 21 .

[0083] It can be understood that the thickness of the clip 2 is relatively thin, and the second limiting portion 21 can be formed by partial bending or stamping of the first connecting portion 23, so that the second limiting portion 21 and the first connecting portion 23 are an integrated structure, and the connection between the second limiting portion 21 and the first connecting portion 23 is tighter.

[0084] In the above embodiment, in order to prevent the clip 2 from tearing or deforming during the forming process of the second limiting portion 21, a crack stop groove is provided in advance between the first connection portion 23 and the portion to be formed as the second limiting portion 21 to prevent tearing or deformation. At the same time, when the second limiting portion 21 is inserted into the limiting hole 13 to limit the clip 2, the crack stop groove can also cause a certain elastic deformation between the second limiting portion 21 and the first connecting portion 23 to prevent failure between the second limiting portion 21 and the first connecting portion 23.

[0085] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 5 and Figure 6 , and see Figure 8 , Figure 8 A schematic diagram of the structure of a control component 4 in a hemostatic clip for an endoscope provided in an embodiment of the present application, wherein the hemostatic clip for an endoscope further includes a control component 4, at least a portion of which is located in a channel 11, and a movable pin 3 is connected to the control component 4; the control component 4 can move along the channel 11 relative to the clamp seat 1 to drive the movable pin 3 to move.

[0086] In the above embodiment, the control component 4 that can move along the first direction X is used to move the movable pin 3 to control the closing and opening of the clip 2, that is, by controlling the movement of the control component 4, the movement of the movable pin 3 can be controlled, thereby controlling the opening and closing between the two clips 2 and realizing the control of the clamping force. When the control component 4 is moved from the proximal end to the distal end, the clamping force between the two clips 2 changes from strong to weak, and the two clips 2 change from closed to open; when the control component 4 is moved from the distal end to the proximal end, the clamping force between the two clips 2 changes from weak to strong, and the two clips 2 change from open to closed.

[0087] In some embodiments, see Figure 8 The control component 4 has a first assembly hole 421, and the movable pin 3 is inserted into the first assembly hole 421. The control component 4 includes a weak portion 422, and the weak portion 422 is arranged at the distal end of the control component 4. The weak portion 422 is configured to be able to separate the movable pin 3 from the control component 4 when the movable pin 3 is located at the proximal end of the guide groove 12 and the control component 4 is subjected to a tensile force greater than or equal to a preset tensile force.

[0088] Specifically, when the control assembly 4 is subjected to a tensile force exceeding a preset tensile force, the weak portion 422 breaks, so that the first assembly hole 421 is connected to the outside, and the movable pin 3 is separated from the control assembly 4 .

[0089] Specifically, when the movable pin 3 is located at the nearest end of the guide groove 12, even if the control component 4 continues to apply a force to the movable pin 3 along the first direction X toward the proximal end under the condition of tension, the movable pin 3 cannot continue to move toward the proximal end due to the limitation of the guide groove 12 and can only squeeze the weak portion 422. When the tension applied to the control component 4 reaches the preset tension, the weak portion 422 fails and breaks, the first assembly hole 421 is connected to the outside, and the movable pin 3 is removed from the first assembly hole 421 and separated from the control component 4. After the control component 4 is separated from the movable pin 3, the control component 4 is also separated from the clip 2, the limit of the first connection portion 23 by the control component 4 is released, the first connection portion 23 moves toward the inner wall of the clamp seat 1, and the second limit portion 21 penetrates the limit hole 13.

[0090] In the above embodiment, the weak portion 422 is provided so that the control assembly 4 can be separated from the movable pin 3 when subjected to a preset pulling force, thereby releasing the limitation on the first connecting portion 23 and allowing the second limiting portion 21 to penetrate into the limiting hole 13.

[0091] In some embodiments, one or more of a notch, a groove, and a hole are provided at the weak portion 422 .

[0092] In some embodiments, a groove is provided in the weak portion 422 so that the thickness of the weak portion 422 along the second direction Y is smaller than the thickness of other portions, thereby making the mechanical properties of the weak portion 422 weaker than those of other portions.

[0093] Please refer again Figure 8 In some embodiments, a weak portion is formed by providing a first through groove 423 .

[0094] Specifically, the first through groove 423 makes the mechanical properties of the weak portion 422 significantly lower than those of the surrounding portions. When the control component 4 is subjected to a preset tensile force and is against the movable pin 3, the weak portion 422 is deformed and fails first compared to the surrounding portions, so that the movable pin 3 can detach from the control component 4 along a preset trajectory.

[0095] In the above embodiment, the mechanical properties of the weak portion 422 are reduced by providing notches, grooves, and holes, so that when the control component 4 is subjected to a tensile force greater than or equal to a preset tensile force, the weak portion 422 can break before other portions, so that the first assembly hole 421 is connected to the outside, so that the movable pin 3 can be detached from the control component 4 from the broken weak portion 422.

[0096] In some embodiments, see Fig.16 , Fig.16 A schematic diagram of the structure of a control component 4 in a hemostatic clip for an endoscope provided in another embodiment of the present application, wherein the control component 4 also has a second through groove 424, which is connected to the first assembly hole 421, and the second through groove 424 is arranged on a side of the first assembly hole 421 away from the weak portion 422.

[0097] The width of the groove connecting the first assembly hole 421 and the outside formed after the weak portion 422 breaks may be smaller than the outer diameter of the movable pin 3. When the movable pin 3 is separated from the control component 4, the control component 4 needs to be deformed to allow the movable pin 3 to be separated.

[0098] In the above example, please refer to Fig.17 By providing a second through slot 424 connected to the first assembly hole 421 to reduce the strength of the distal end of the control component 4, the distal end of the control component 4 is more likely to undergo elastic deformation to allow the movable pin 3 to pass through.

[0099] In some embodiments, please refer again to Figure 8 The control component 4 includes two third connecting parts 425, and parts of multiple clips 2 are constrained between the two third connecting parts 425; when the movable pin 3 is separated from the control component 4, the proximal end of the clip 2 is not constrained by the third connecting part 425 and is released, and moves toward the clamp seat 1.

[0100] In the above embodiment, the third connection portion 425 is used to limit the first connection portion 23 of the clip 2, see Fig.12 and Fig.13 , Fig.12 This is a cross-sectional view of a closed clip 2 in a hemostatic clip for an endoscope provided in an embodiment of the present application. Fig.13 for Fig.12 The details of the middle circle B are to prevent the first connection part 23 from approaching the inner wall of the clamp seat 1 when it is not necessary, causing the second limit part 21 to enter the limit hole 13 in advance to lock the clip 2. Only after the control component 4 is applied with a preset pulling force, the control component 4 is separated from the movable pin 3 and the limit on the first connection part 23 is released, the second limit part 21 will enter the limit hole 13 to lock the clip 2, please refer to Fig.14 and Fig.15 , Fig.14 This is a cross-sectional view of a clip 2 of a hemostatic clip for an endoscope provided in an embodiment of the present application when locked. Fig.15 for Fig.14 Detail of point C in the center circle.

[0101] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Fig.10 and Fig.11 , Fig.10 This is a schematic diagram of the structure of the locking member 6 in the hemostatic clip for an endoscope provided in an embodiment of the present application. Fig.11 A schematic diagram of the structure of a catheter 5 in a hemostatic clamp for an endoscope provided in an embodiment of the present application, wherein the hemostatic clamp for an endoscope includes a catheter 5 and a locking member 6, a control component 4 is passed through the catheter 5, the catheter 5 has a first connecting hole 51, and the clamp seat 1 has a second connecting hole 15, and the locking member 6 is passed through the first connecting hole 51 and the second connecting hole 15 to connect the catheter 5 and the clamp seat 1; when the movable pin 3 is separated from the control component 4 and the control component 4 is subjected to a preset pulling force, the control component 4 can abut and push the locking member 6 to disengage the locking member 6 from the first connecting hole 51 and the second connecting hole 15 to separate the catheter 5 from the clamp seat 1.

[0102] Specifically, the locking member 6 includes at least two claws 61 and a base 62, the claw 61 is used to be inserted into the first connecting hole 51 and the second connecting hole 15, and the base 62 is provided with a through hole 63 for the cable 41 to pass through, and the base 62 is used to abut against the buckle 42 that has been separated from the movable pin 3; wherein, the claw 61 has a guiding slope, so that when the base 62 is squeezed by the buckle 42, the claw 61 can move toward the cable 41 so that the claw 61 at least disengages from one of the first connecting hole 51 or the second connecting hole 15, so that the clamp seat 1 is separated from the catheter 5.

[0103] In the above embodiment, the locking member 6 is provided so that the clamp seat 1 and the catheter 5 can be separated, thereby releasing the clip 2, so that the clip 2 is left on the wound surface for continuous hemostasis.

[0104] In some embodiments, please refer again to Figure 3 and Figure 4 The hemostatic clip for endoscope also includes a spacer 7, which is connected to the clamp seat 1 and is arranged in the channel 11. The spacer 7 is located between the multiple clips 2; when the clips 2 move from the closed position to the open position, the spacer 7 can squeeze the multiple clips 2 to make the multiple clips 2 move away from each other.

[0105] In the above embodiment, when the clip 2 is in the open position, the spacer 7 squeezes the clip 2 to make the opening angle of the clamping portion 22 of the clip 2 larger, which is more convenient when performing hemostasis operation on a large wound. Specifically, the spacer 7 extends along the third direction Z.

[0106] In some embodiments, please refer again to Figure 1 and Fig. 9 The outer wall of the clamp seat 1 has an avoidance groove 14 , the guide groove 12 is connected to the avoidance groove 14 , and the first limiting portion 32 is located in the avoidance groove 14 .

[0107] In the above embodiment, the avoidance groove 14 is provided to prevent the first limiting portion 32 from exceeding the range of the clamp seat 1, thereby preventing the first limiting portion 32 from being blocked or interfered when the hemostatic clip is moved or operated.

[0108] Specifically, the clamping seat 1 has a bottom wall for forming an avoidance groove 14, and the bottom wall is in contact with the limiting surface to expand the contact area of ​​the limiting surface, thereby increasing the axial limiting effect of the limiting surface on the movable pin 3, and also increasing the limiting effect of the limiting surface on the rotation of the movable pin 3 around the axis extending along the third direction Z.

[0109] In some embodiments, see Fig.18 , Fig.18This is a front view of a hemostatic clip for an endoscope provided in an embodiment of the present application. The hemostatic clip for an endoscope also includes a handle 8, which is connected to a side of a control component 4 away from the clamp seat 1. The handle 8 is used to drive the control component 4 to move along a channel 11 relative to the clamp seat 1.

[0110] Specifically, a pushing force is applied to the handle 8, and the control component 4 moves relative to the clamp seat 1 to drive the movable pin 3 to move toward the distal end of the guide groove 12, thereby opening the clamp 2; a pulling force is applied to the handle 8, and the control component 4 moves relative to the clamp seat 1 to drive the movable pin 3 to move toward the proximal end of the guide groove 12, thereby closing the clamp 2.

[0111] In the above embodiment, the handle 8 is connected to the cable 41, and the cable 41 is passed through the catheter 5. By operating the handle 8 at the proximal end and utilizing the catheter 5 to transmit the driving force, the movable pin 3 is moved along the first direction X, thereby realizing a series of actions such as opening, closing, locking of the distal clip 2 and release of the clamp seat 1, thereby greatly improving the efficiency of clinical surgery and reducing the risk of instrument failure.

[0112] In some embodiments, the movable pin 3 can be moved along the guide slot 12 to a locking position so that the plurality of clips 2 are closed to each other and locked relative to the clamp seat 1;

[0113] The hemostatic clip for endoscope further comprises a catheter 5, which is connected to the clamp seat 1, and the catheter 5 is configured to be separated from the clamp seat 1 by a tensile force greater than or equal to a preset tensile force;

[0114] At least part of the control component 4 is passed through the conduit 5 , and the control component 4 is connected to the movable pin 3 . The control component 4 is configured to be able to separate from the movable pin 3 when subjected to a tensile force greater than or equal to a preset tensile force.

[0115] Specifically, the locking position is located at the proximal end of the guide groove 12. When the movable pin 3 moves to the proximal end of the guide groove 12, the clips 2 are closed to each other, and the second limiting portion 21 can be inserted into the limiting hole 13, so that the clips 2 are limited and remain closed to each other.

[0116] When the control assembly 4 is subjected to a tensile force greater than or equal to the preset tensile force, the weak portion 422 breaks, the buckle 42 separates from the movable pin 3, and the buckle 42 continues to move toward the proximal end. When the buckle 42 abuts against the locking member 6 and pushes the locking member 6 to move toward the proximal end, the locking member 6 disengages from the first connection hole 51 and the second connection hole 15, and the catheter 5 separates from the clamp seat 1. At this point, the clamp seat 1, the clip 2, and the movable pin 3 are separated from the control assembly 4 and the catheter 5, and the clamp seat 1, the clip 2, and the movable pin 3 are released.

[0117] The use process of the hemostatic clip for endoscope:

[0118] 1. Apply a pulling force less than a preset pulling force to the control component 4 to control the two clips 2 to close;

[0119] 2. inserting the hemostatic clip for endoscope into the clamp channel so as to be delivered into the human body through the clamp channel;

[0120] 3. When the distal end of the clamp channel reaches the vicinity of the wound surface, a thrust is applied to the control component 4 to extend and open the clip 2;

[0121] 4. Apply tension to the control component 4 so that the clip 2 clamps the wound surface. Please refer to Fig.12 and Fig.13 ;

[0122] 5. Apply a preset pulling force to the control component 4, the weak part 422 breaks, the control component 4 is separated from the movable pin 3, the second limiting part 21 enters the limiting hole 13, and the clip 2 is locked. Please refer to Fig.14 and Fig.15 ;

[0123] 6. Continue to apply pulling force to the control assembly 4 so that the control assembly 4 abuts against the locking member 6, so that the clamp seat 1 is separated from the catheter 5;

[0124] 7. The release of the clip 2 and the clamp seat 1 is completed, and the clamp seat 1 and the clip 2 remain in the body and the clip 2 clamps the wound surface to apply a clamping force to the wound surface for a long time to stop bleeding.

[0125] The above is a detailed introduction to a hemostatic clip for an endoscope provided in an embodiment of the present application. Specific examples are used in the present application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A hemostatic clip for an endoscope, characterized in that: include: A clamping seat (1), the clamping seat (1) comprising a channel (11) and a guide groove (12) connected to the channel (11), the channel (11) passing through the clamping seat (1) along a first direction (X); A plurality of clips (2), at least a portion of the clips (2) being disposed in the channel (11); The movable pin (3) comprises a main body (31) and two first limiting portions (32), wherein the main body (31) is inserted into the channel (11) and the guide groove (12) and connected to the plurality of clips (2), and the two first limiting portions (32) are connected to the main body (31) and respectively abut against the clip seat (1); The movable pin (3) is configured to be able to move along the guide groove (12) when subjected to a force along the first direction (X), and drive the plurality of clips (2) to move between a closed position and an open position relative to the clip seat (1).

2. The hemostatic clip for endoscope according to claim 1, characterized in that: When the plurality of clips (2) move between a closed position and an open position relative to the clip seat (1), each of the clips (2) is capable of moving relative to another clip (2) along a second direction (Y); The extending direction of the movable pin (3) is inclined to the third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

3. The hemostatic clip for endoscope according to claim 2, characterized in that: The movable pin (3) extends along the second direction (Y).

4. The hemostatic clip for endoscope according to claim 1, characterized in that: The clamp seat (1) also has a plurality of limiting holes (13) connected to the channel (11), and the clip (2) includes a second limiting portion (21), and the second limiting portion (21) of each of the clips (2) can be inserted into one of the limiting holes (13), so that the positions of the plurality of clips (2) relative to the clamp seat (1) are locked.

5. The hemostatic clip for endoscope according to claim 4, characterized in that: The clip (2) further comprises: A clamping portion (22), wherein in the closed position, the clamping portions (22) of the plurality of clamps (2) are closed to each other, and in the open position, the clamping portions (22) of the plurality of clamps (2) are away from each other; A first connecting portion (23), the first connecting portion (23) is connected to the proximal end of the clip (2), the first connecting portion (23) is connected to the movable pin (3), and the second limiting portion (21) is connected to a side of the first connecting portion (23) away from the clamping portion (22).

6. The hemostatic clip for endoscope according to claim 4, characterized in that: At least a portion of the second limiting portion (21) is arranged to protrude relative to the clip (2) in a direction away from the other clip (2).

7. The hemostatic clip for endoscope according to claim 1, characterized in that: The hemostatic clamp for endoscope further comprises a control component (4), at least a portion of which is located in the channel (11), and the movable pin (3) is connected to the control component (4); the control component (4) is movable along the channel (11) relative to the clamp seat (1) to drive the movable pin (3) to move.

8. The hemostatic clip for endoscope according to claim 7, characterized in that: The control component (4) has a first assembly hole (421), and the movable pin (3) is inserted into the first assembly hole (421). The control component (4) includes a weak portion (422), and the weak portion (422) is arranged at the distal end of the control component (4). The weak portion (422) is configured to separate the movable pin (3) from the control component (4) when the movable pin (3) is located at the proximal end of the guide groove (12) and the control component (4) is subjected to a tensile force greater than or equal to a preset tensile force.

9. The hemostatic clip for endoscope according to claim 8, characterized in that: The weak portion (422) is provided with one or more of a notch, a groove, and a hole.

10. The hemostatic clip for endoscope according to claim 8, characterized in that: The control component (4) further comprises a second through slot, the second through slot being in communication with the first assembly hole (421), and the second through slot being arranged on a side of the first assembly hole (421) away from the weak portion (422).

11. The hemostatic clip for endoscope according to claim 7, characterized in that: The control assembly (4) comprises two third connecting parts (425), and parts of the plurality of clips (2) are constrained between the two third connecting parts (425); When the movable pin (3) is separated from the control assembly (4), the proximal end of the clip (2) is no longer constrained by the third connecting portion (425) and is released, and moves toward the clip seat (1).

12. The hemostatic clip for endoscope according to claim 7, characterized in that: The hemostatic clip for an endoscope comprises a catheter (5) and a locking member (6), the control component (4) is inserted into the catheter (5), the catheter (5) has a first connecting hole (51), the clamp seat (1) has a second connecting hole (15), and the locking member (6) is inserted into the first connecting hole (51) and the second connecting hole (15) to connect the catheter (5) and the clamp seat (1); When the movable pin (3) is separated from the control component (4) and the control component (4) is subjected to a preset pulling force, the control component (4) can abut against and push the locking member (6) so that the locking member (6) is disengaged from the first connecting hole (51) and the second connecting hole (15), thereby separating the catheter (5) and the clamp seat (1).

13. The hemostatic clip for endoscope according to claim 1, characterized in that: The hemostatic clip for endoscope also includes: A spacer (7), the spacer (7) being connected to the clamp seat (1) and arranged in the channel (11), the spacer (7) being located between the plurality of clips (2); when the clips (2) move from a closed position to an open position, the spacer (7) can squeeze the plurality of clips (2) so that the plurality of clips (2) are moved away from each other.

14. The hemostatic clip for endoscope according to claim 1, characterized in that: The outer wall of the clamp seat (1) has an escape groove (14), the guide groove (12) is in communication with the escape groove (14), and the first limiting portion (32) is located in the escape groove (14).

15. The hemostatic clip for endoscope according to claim 1, characterized in that: The movable pin (3) can move along the guide groove (12) to a locking position, so that the plurality of clips (2) are closed to each other and their positions relative to the clip seat (1) are locked; The hemostatic clip for endoscope further comprises a catheter (5), wherein the catheter (5) is connected to the clamp seat (1), and the catheter (5) is configured to be able to separate from the clamp seat (1) when subjected to a tensile force greater than or equal to a preset tensile force; A control component (4) wherein at least a portion of the control component (4) is inserted into the conduit (5), the control component (4) is connected to the movable pin (3), and the control component (4) is configured to be able to separate from the movable pin (3) when subjected to a tensile force greater than or equal to a preset tensile force.

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