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 and a clamping assembly, the clip seat is provided with a through channel, a guide groove communicating with the channel and an avoiding groove spaced from the guide groove in the circumferential direction of the clip seat, and the clip seat comprises a first limiting part; at least part of the first limiting part is located in the guide groove, and at least part of the first limiting part is located between the guide groove and the receding groove; at least part of the clamping assembly is located in the channel, the clamping assembly comprises a movable pin and two clamping pieces which are connected, and the movable pin penetrates through the guide groove; the clamping assembly can move along the channel relative to the clamping base so that the movable pin can move along the guide groove. Wherein the movable pin moves to a locking position along the guide groove, the first limiting part is used for limiting the movable pin to the locking position, and the first limiting part is configured to be capable of deforming towards the avoiding groove when being extruded by the movable pin, so that the two clamping pieces are mutually closed, and the positions of the two clamping pieces relative to the clamping seat are locked.

Description

Technical Field

[0001] The present application belongs to the technical 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 method, which means that the tissues and bleeding vessels around the wound are clamped and fixed by the closing force between the hemostatic clips, thereby achieving the effect of hemostasis. In actual use, the hemostatic clip is sent into the lesion through the clamp channel of the endoscope, and then the wound is ligated with the hemostatic clip, and then the hemostatic clip is released to achieve the purpose of lasting hemostasis.

[0003] However, when stopping bleeding from a large wound, due to the large wound area or hard scar tissue, the tension of the wound tissue is very high and it is difficult for the hemostatic clip to clamp it. Even after the hemostatic clip clamps the wound tissue, the tissue tension will make the hemostatic clip not firmly clamped, and then it will loosen or fall off, causing delayed bleeding. Summary of the invention

[0004] Purpose of the invention: The present application provides a hemostatic clip for an endoscope, which is used to solve the technical problem that the hemostatic clip is not firmly clamped when stopping bleeding on a large wound, and then becomes loose and falls off.

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

[0006] A clamp seat, the clamp seat having a through-going channel, a guide groove communicating with the channel, and an escape groove spaced from the guide groove along the circumference of the clamp seat, the clamp seat comprising a first limiting portion, at least a portion of the first limiting portion is located in the guide groove, and at least a portion of the first limiting portion is located between the guide groove and the escape groove;

[0007] A clamping assembly, at least part of which is located in the channel, the clamping assembly comprising a movable pin and at least two clamping pieces connected to each other, the movable pin being inserted into the guide groove; the clamping assembly can move along the channel relative to the clamping seat so that the movable pin can move along the guide groove;

[0008] In which, the movable pin can move along the guide groove to a locking position, and the first limiting portion is configured to be deformed into the avoidance groove when squeezed by the movable pin, and the first limiting portion is configured to limit the movable pin to the locking position, so that the at least two clips are closed to each other and locked relative to the clamp seat.

[0009] In some embodiments, the first limiting portion is configured to be elastically deformed when squeezed by the movable pin, so that the movable pin can move along the guide groove and disengage from the first limiting portion.

[0010] In some embodiments, the clamping seat includes a plurality of the first limiting portions, and at least a portion of the guide groove is disposed between two oppositely disposed first limiting portions;

[0011] The avoidance grooves are provided on both sides of the guide groove, and each of the first limiting portions corresponds to a position of the avoidance groove.

[0012] In some embodiments, the locking position is located at a proximal end of the guide slot.

[0013] In some embodiments, the hemostatic clip for endoscope further comprises:

[0014] A control component, at least part 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 clamping seat to drive the clamping component to move.

[0015] In some embodiments, the movable pin includes a connecting portion and two second limiting portions, and two ends of the connecting portion are respectively connected to the two second limiting portions;

[0016] The clip and the control assembly are both connected to the connecting portion, and the second limiting portion is used to limit the clip and the control assembly on the connecting portion along the extending direction of the movable pin.

[0017] In some embodiments, the control assembly includes a pull cable and a pull buckle, the movable pin is connected to the pull buckle, the pull buckle has a first assembly hole, and the pull cable is embedded in the first assembly hole to be connected to the pull buckle;

[0018] When the movable pin is located at the locking position and the cable is subjected to a preset tension, the cable can be disengaged from the first assembly hole, so that the cable is disconnected from the buckle.

[0019] In some embodiments, the control assembly has a second assembly hole and a through slot communicating with the second assembly hole, the through slot extends from the assembly hole toward the distal end of the control assembly, and the movable pin is inserted into the second assembly hole;

[0020] When the movable pin is located at the locking position and the control assembly is subjected to a preset pulling force, the control assembly can move along the through slot relative to the movable pin, so that the movable pin is separated from the control assembly via the through slot.

[0021] In some embodiments, the width of the movable pin is greater than the width of the through slot. When the movable pin is located in the through slot, the movable pin squeezes the control component to cause the control component to undergo elastic deformation, so that the movable pin can detach from the through slot and separate from the control component.

[0022] In some embodiments, the control component has an extension slot connected to a side of the second assembly hole away from the through slot, and the extension slot extends from the assembly hole toward a proximal end of the control component.

[0023] In some embodiments, the control component has a crack-stopping hole connected to the extension slot, and the crack-stopping hole is connected to a side of the extension slot away from the second assembly hole.

[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 located at the locking position and the control component is subjected to a preset pulling force, the control component 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] Beneficial effect: Compared with the prior art, the hemostatic clip for endoscope provided in the embodiment of the present application includes a clamp seat and a clamping assembly, the clamp seat has a channel set through, a guide groove connecting the channel, and an avoidance groove set along the circumference of the clamp seat and spaced apart from the guide groove, the clamp seat includes a first limiting portion, at least part of the first limiting portion is located in the guide groove, and at least part of the first limiting portion is located between the guide groove and the avoidance groove; at least part of the clamping assembly is located in the channel, the clamping assembly includes a connected movable pin and at least two clips, and the movable pin is passed through the guide groove; the clamping assembly can move along the channel relative to the clamp seat so that the movable pin can move along the guide groove; wherein the movable pin can move along the guide groove to a locking position, the first limiting portion is configured to be deformed into the avoidance groove when squeezed by the movable pin, and the first limiting portion is configured to be able to limit the movable pin to the locking position, so that at least two clips are closed to each other and locked relative to the position of the clamp seat. The present application sets a first limiting portion and sets at least a part of the first limiting portion in the guide groove, so that the movable pin can be limited to a locking position, so that the clips can remain in a closed state for a long time after being released, and can avoid the occurrence of delayed detachment when the hemostatic clip is used to stop bleeding on a large wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 A schematic diagram of the structure of a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0029] Figure 2 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application in one direction;

[0030] Figure 3 A cross-sectional view of the hemostatic clip for an endoscope provided in an embodiment of the present application from another direction;

[0031] Figure 4 An exploded schematic diagram of a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0032] Figure 5 A schematic structural diagram of a clamp seat in a hemostatic clamp for an endoscope provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of the structure of a catheter in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0034] Figure 7 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;

[0035] Figure 8 A schematic diagram of the structure of a movable pin in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0036] Fig. 9 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;

[0037] Fig.10 A schematic diagram of the structure of a buckle in a hemostatic clip for an endoscope provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of the structure of a buckle in a hemostatic clip for an endoscope after deformation provided in an embodiment of the present application;

[0039] Fig.12 A schematic diagram of the structure of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is in a locked position;

[0040] Fig.13 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is in a locked position;

[0041] Fig.14A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is separated from the control assembly.

[0042] Figure markings, 1-clamp seat, 11-channel, 12-guide groove, 13-first limiting portion, 14-avoidance groove, 15-second connecting hole, 2-clamping assembly, 21-movable pin, 211-connecting portion, 212-second limiting portion, 22-clamp, 3-control assembly, 31-pull cable, 32-pull buckle, 321-first assembly hole, 33-second assembly hole, 34-through groove, 35-extension groove, 36-crack stop hole, 4-conduit, 41-first connecting hole, 5-locking piece, 51-claw, 52-base, 53-through hole. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Hemostasis by hemostatic clips is physical hemostasis, that is, the tissues and bleeding blood vessels around the wound are clamped and fixed by the closing force between the hemostatic clip clips 22, so as to achieve the effect of hemostasis. In actual use, the hemostatic clip is sent to the lesion site through the clamp channel of the endoscope, and then the wound surface is ligated with the hemostatic clip, and then the hemostatic clip is released to achieve the purpose of lasting hemostasis.

[0048] However, when stopping bleeding from a large wound, due to the large wound area or hard scar tissue, the tension of the wound tissue is very high, making it difficult for the hemostatic clip to clamp it. If clamped, it is prone to delayed detachment, resulting in failure to effectively clamp the wound and achieve the hemostatic effect.

[0049] In order to solve the technical problem that the hemostatic clip is not firmly clamped when stopping bleeding on a large wound, and then becomes loose and falls off, the first embodiment of the present application provides a hemostatic clip for an endoscope, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,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 This is a schematic diagram of an exploded view of a hemostatic clip for an endoscope provided in an embodiment of the present application. Figure 5A schematic structural diagram of a clamp seat 1 in a hemostatic clamp for an endoscope provided in an embodiment of the present application, wherein the hemostatic clamp for an endoscope comprises a clamp seat 1 and a clamping assembly 2, wherein the clamp seat 1 has a channel 11 extending therethrough, a guide groove 12 communicating with the channel 11, and an escape groove spaced from the guide groove 12 along the circumference of the clamp seat 1, the clamp seat 1 comprises a first limiting portion 13, at least a portion of the first limiting portion 13 is located in the guide groove 12, and at least a portion of the first limiting portion 13 is located between the guide groove 12 and the escape groove 14; at least a portion of the clamping assembly 2 is located in the channel 11, and the clamping assembly 2 It includes a connected movable pin 21 and at least two clips 22, the movable pin 21 is inserted into the guide groove 12; the clamping assembly 2 can move along the channel 11 relative to the clamping seat 1, so that the movable pin 21 can move along the guide groove 12; wherein the movable pin 21 can move along the guide groove 12 to a locking position, and the first limiting portion 13 is configured to be deformed into the avoidance groove 14 when being squeezed by the movable pin 21, and the first limiting portion 13 is configured to be able to limit the movable pin 21 to the locking position, so that at least two clips 22 are closed to each other and the position relative to the clamping seat 1 is locked.

[0050] Specifically, the above-mentioned "locking" means that the movable pin 21 is restricted to the locking position, so that the positions of the two clips 22 can only move within a certain range. Although the movable pin 21 can move slightly within the certain range, the two clips 22 can still remain closed and the clips 22 abut against each other so that the hemostatic clip has a clamping force.

[0051] The first limiting portion 13 includes a portion located in the guide groove 12, and the portion located in the guide groove 12 is directly used to limit the movable pin 21. Specifically, the portion of the first limiting portion 13 located in the guide groove 12 has an arc surface that can contact the movable pin 21, so that the movable pin 21 presses the clamping seat 1 when subjected to a force toward the proximal end along the first direction X so that at least a portion of the clamping seat 1 is deformed toward the avoidance groove 14, thereby increasing the width of the guide groove 12 at the location of the first limiting portion 13, thereby allowing the movable pin 21 to pass through the first limiting portion 13 to reach the locking position.

[0052] The first limiting portion 13 also includes a portion located in the guide groove 12 and a portion located between the guide groove 12 and the avoidance groove 14. By providing the avoidance groove 14, the portion of the first limiting portion 13 located in the guide groove 12 and the avoidance groove 14 becomes a mechanical weak point, so that the deformation range of the clamp seat 1 after being squeezed can be controlled. Under the squeezing of the movable pin 21, the deformed portion will be limited to the first limiting portion 13, that is, the first limiting portion 13 deforms toward the avoidance groove 14, so as to avoid the expansion of the deformation range and cause failure of other components, thereby improving the reliability of the hemostatic clip for endoscope.

[0053] The movable pin 21 in the clamping assembly 2 is always located in the channel 11 , and part of the clip 22 is located in the channel 11 , and the more the proximal end of the clip 22 is located in the channel 11 , the closer the distal ends of the two clips 22 are.

[0054] The guide groove 12 is used to limit the moving direction of the movable pin 21 , so that the movable pin 21 can only reciprocate between the proximal end and the distal end of the clamping seat 1 .

[0055] In other embodiments, the avoidance groove 14 may also exist in the form of a hole. In the above embodiment, when the movable pin 21 is not in the locking position, the closing action of the clip 22 and the generation of the clamping force need to be generated by the action of the movable pin 21 moving from the distal end to the proximal end. The closer the movable pin 21 is to the proximal end of the guide groove 12, the greater the clamping force generated between the two clips 22. When the movable pin 21 enters the locking position, the clamping force generated between the two clips 22 is the largest, and because the first limiting portion 13 can lock the movable pin 21 after entering the locking position, when the clip 22 and the clamp seat 1 are released, the two clips 22 can still be closed and a large clamping force can be maintained between the two clips 22, so as to avoid the delayed shedding of the hemostatic clip when stopping bleeding on a large wound.

[0056] In some embodiments, the first limiting portion 13 is configured to be elastically deformed when pressed by the movable pin 21 , so that the movable pin 21 can move along the guide groove 12 and break away from the first limiting portion 13 .

[0057] Specifically, in order to lock the clip 22, the movable pin 21 is moved from the distal end to the proximal end in the guide groove 12. When the movable pin 21 contacts the first limiting portion 13, the pulling force on the movable pin 21 is increased so that the movable pin 21 squeezes the first limiting portion 13, the first limiting portion 13 produces elastic deformation, and the movable pin 21 passes over the first limiting portion 13 and enters the locking position.

[0058] In the above embodiment, the portion of the clamp seat 1 that is deformed after the movable pin 21 is subjected to force is limited to the first limiting portion 13 to minimize the deformation range of the clamp seat 1, thereby avoiding failure of other components due to a large deformation range of the clamp seat 1, thereby improving the reliability of the hemostatic clip for endoscope.

[0059] In some embodiments, the avoidance groove 14 is only provided on one side of the guide groove 12, and a first limiting portion 13 is provided corresponding to the guide groove 12. The function of limiting the movable pin 21 can be achieved by providing a first limiting portion 13. In this embodiment, when the movable pin 21 passes through the first limiting portion 13, the first limiting portion 13 is deformed, and the width of the guide groove 12 at the location of the first limiting portion 13 increases so that the movable pin 21 can pass through.

[0060] In other embodiments, the clamping seat 1 includes a plurality of first limiting portions 13, and at least a portion of the guide groove 12 is disposed between two first limiting portions 13 disposed opposite to each other; an avoidance groove 14 is disposed on one side of the guide groove 12, so that the first limiting portion 13 on one side of the guide groove 12 corresponds to the avoidance groove 14. Thus, the deformation of the first limiting portion 13 corresponding to the avoidance groove 14 is reduced, and the reliability is better.

[0061] In some other embodiments, please refer again to Figure 5 The clamping seat 1 includes a plurality of first limiting portions 13, and at least a portion of the guide groove 12 is disposed between two oppositely disposed first limiting portions 13; avoidance grooves 14 are disposed on both sides of the guide groove 12, and each first limiting portion 13 corresponds to a position of an avoidance groove 14.

[0062] In the above embodiment, the avoidance grooves 14 are respectively provided on both sides of the guide groove 12, and the same guide groove 12 corresponds to at least two first limiting portions 13, so as to reduce the elastic deformation of the first limiting portion 13 when the movable pin 21 passes through. Compared with the embodiment in which one guide groove 12 corresponds to one first limiting portion 13, the deformation of the first limiting portion 13 in the embodiment in which one guide groove 12 corresponds to two first limiting portions 13 is smaller, the elastic deformation is not easy to be converted into plastic deformation, the clamp seat 1 and other components are not easy to fail, and the reliability of the hemostatic clip for endoscope is better.

[0063] In some embodiments, please refer again to Figure 1 , Figure 2 , Figure 3 and Figure 5 , the locking position is located at the proximal end of the guide slot 12. When the movable pin 21 is located at the distal end of the guide slot 12, the multiple clips 22 are opened to each other, and when the movable pin 21 is located at the proximal end of the guide slot 12, the multiple clips 22 are closed to each other. According to the above, the closer the movable pin 21 is to the proximal end of the guide slot 12, the greater the clamping force generated between the two clips 22. Therefore, setting the locking position at the proximal end of the guide slot 12 can make the clamping force generated between the two clips 22 maximum when the movable pin 21 is in the locking position. When the clamp seat 1 and the clip 22 are released, the two clips 22 can still maintain a large clamping force, thereby avoiding the occurrence of delayed shedding.

[0064] In some embodiments, please refer again to Figure 4 The hemostatic clamp for endoscope also includes a control component 3, at least part of which is located in the channel 11, and the movable pin 21 is connected to the control component 3; the control component 3 can move along the channel 11 relative to the clamp seat 1 to drive the clamping component 2 to move.

[0065] In the above embodiment, the control component 3 that can move along the channel 11 is used to move the movable pin 21 to close and open the two clips 22, that is, by controlling the movement of the control component 3, the movement of the movable pin 21 can be controlled, thereby controlling the opening and closing between the two clips 22 and realizing the control of the clamping force. When the control component 3 is moved from the proximal end to the distal end, the clamping force between the two clips 22 changes from strong to weak, and the two clips 22 change from closed to open; when the control component 3 is moved from the distal end to the proximal end, the clamping force between the two clips 22 changes from weak to strong, and the two clips 22 change from open to closed.

[0066] In some embodiments, see Figure 8 , Figure 8 Schematic diagram of the structure of the movable pin 21 in the hemostatic clip for endoscope provided in an embodiment of the present application, the movable pin 21 includes a connecting portion 211 and two second limiting portions 212, the two ends of the connecting portion 211 are respectively connected to the two second limiting portions 212; the clip 22 and the control component 3 are both connected to the connecting portion 211, and the second limiting portions 212 are used to limit the clip 22 and the control component 3 on the connecting portion 211 along the extension direction X of the movable pin 21, and the extension direction X of the movable pin 21 is Figure 8 The direction of the X axis.

[0067] Specifically, the two second limiting portions 212 respectively have limiting surfaces, and the two limiting surfaces are arranged opposite to each other.

[0068] Furthermore, the second limiting portion 212 has a cylindrical surface, the outer diameter of the second limiting portion 212 is greater than the outer diameter of the connecting portion 211 , and the second limiting portion 212 and the connecting portion 211 are axially arranged and connected in the axial direction.

[0069] In the above embodiment, the limiting surface can be connected with the control assembly 3 to limit the clip 22 and the control assembly 3 at the connecting portion 211. The control assembly 3 is connected with the limiting surface and can also limit the movable pin 21 in the axial direction to prevent the movable pin 21 from moving in the axial direction and separating from the clip 22 or the control assembly 3. In addition, the cylindrical surface of the second limiting portion 212 can play a guiding role after squeezing the first limiting portion 13, thereby allowing the second limiting portion 212 to pass through the first limiting portion 13 more smoothly.

[0070] In some embodiments, the control component 3 includes a cable 31 and a buckle 32, the movable pin 21 is connected to the buckle 32, the buckle 32 has a first assembly hole 321, and the cable 31 is embedded in the first assembly hole 321 to be connected to the buckle 32; when the movable pin 21 is in the locked position and the cable 31 is subjected to a preset tension, the cable 31 can be disengaged from the first assembly hole 321 to disconnect the cable 31 from the buckle 32.

[0071] Specifically, the buckle 32 is used to drive the movable pin 21 to move, and the cable 31 is used to transmit power and the buckle 32 is a flexible connector that can withstand a certain deformation, so that the cable 31 can also bend when the catheter 4 is bent. The cable 31 and the buckle 32 are limited by friction, and the preset tension is greater than the static friction between the cable 31 and the buckle 32, and the preset tension is greater than the tension required when the movable pin 21 passes through the first limiting portion 13. It can be understood that when the cable 31 is subjected to a small pulling force, the buckle 32 can pull the movable pin 21 to move in the guide groove 12; when the movable pin 21 contacts the first limiting portion 13, the pulling force applied to the cable 31 needs to be increased so that the movable pin 21 squeezes the first limiting portion 13, thereby causing the first limiting portion 13 to deform, and the movable pin 21 passes through the first limiting portion 13 to enter the locking position. At this time, since the pulling force on the cable 31 is less than the preset pulling force, the cable 31 and the buckle 32 will not separate; when the clip 22 needs to be released , a pulling force is applied to the cable 31, and the buckle 32 contacts the locking member 5 under the traction of the cable 31, increasing the pulling force on the cable 31 so that the buckle 32 pushes the locking member 5 toward the proximal end, so that the catheter 4 is separated from the clamp seat 1; when the catheter 4 is separated from the clamp seat 1, or after the catheter 4 is separated from the clamp seat 1, a preset pulling force is applied to the cable 31, and the preset pulling force is greater than the static friction between the cable 31 and the buckle 32, and a relative movement is generated between the cable 31 and the buckle 32, and the cable 31 and the buckle 32 are separated, completing the release of the clip 22 and the clamp seat 1.

[0072] In the above embodiment, the first assembly hole 321 and the friction force are used to limit the position between the cable 31 and the buckle 32, so that the cable 31 and the buckle 32 can be easily separated. The cable 31 and the buckle 32 can be separated by applying a pulling force greater than the friction force, which can also simplify the structure of the cable 31 and the buckle 32.

[0073] In some other embodiments, see Figure 7 , Fig.12 , Fig.13 and Fig.14 , Figure 7 This is a schematic diagram of the structure of a control component 3 in a hemostatic clip for an endoscope provided in an embodiment of the present application. Fig.12 This is a schematic diagram of the structure of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is in a locked position. Fig.13 A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is in a locked position. Fig.14A cross-sectional view of a hemostatic clip for an endoscope provided in an embodiment of the present application when the movable pin is separated from the control component, wherein the control component 3 has a second assembly hole 33 and a through slot 34 connected to the second assembly hole 33, wherein the through slot 34 extends from the assembly hole toward the distal end of the control component 3, and the movable pin 21 is passed through the second assembly hole 33; when the movable pin 21 is located in a locked position and the control component 3 is subjected to a preset tensile force, the control component 3 can move along the through slot 34 relative to the movable pin 21, so that the movable pin 21 is separated from the control component 3 via the through slot 34.

[0074] Specifically, the second assembly hole 33 and the through groove 34 are both arranged at the distal end of the buckle 32, and the distal end of the buckle 32 has two oppositely arranged side walls. The second assembly hole 33 and the through groove 34 are both arranged on the side walls, and a connecting space is formed between the two side walls. The proximal end of the clip 22 is arranged in the connecting space.

[0075] Specifically, when the control component 3 is subjected to a preset tensile force, since the movable pin 21 is already in the locked position, the movable pin 21 cannot continue to move toward the proximal end under the obstruction of the clamp seat 1, while the control component 3 has a tendency to move toward the proximal end under the action of the preset tensile force, and the movable pin 21 squeezes the parts of the control component 3 located on both sides of the through groove 34, causing the parts of the control component 3 located on both sides of the through groove 34 to be deformed, or the movable pin 21 itself is deformed, or the movable pin 21 and the control component 3 are deformed at the same time, and the movable pin 21 detaches from the control component 3 from the through groove 34, thereby realizing the separation of the control component 3 and the movable pin 21.

[0076] Furthermore, the deformation of the control assembly 3 on both sides of the through slot 34 may be elastic deformation or plastic deformation. In order to ensure that the movable pin 21 can stay in the locked position after being separated from the control assembly 3, the movable pin 21 is elastically deformed so as to restore its original shape after being separated from the control assembly 3 and be limited to the proximal end of the first limiting portion 13.

[0077] Specifically, the connecting portion 211 of the movable pin 21 has a cylindrical surface, and the cylindrical surface can play a guiding role when the movable pin 21 passes through the through slot 34 .

[0078] In the above embodiment, a through groove 34 is provided on the control component 3 to provide a channel 11 for the movable pin 21 to leave the second assembly hole 33 when the clip 22 needs to be released; and when the clip 22 does not need to be released, the control component 3 still has a relatively reliable limiting effect on the movable pin 21, so that the hemostatic clip for endoscope has better reliability.

[0079] In some embodiments, see Fig.10 and Fig.11 , Fig.10This is a schematic diagram of the structure of the buckle 32 in the hemostatic clip for endoscope provided in an embodiment of the present application. Fig.11 The schematic diagram of the structure of the buckle 32 after deformation in the hemostatic clip for endoscope provided in the embodiment of the present application, the width of the movable pin 21 is greater than the width of the through slot 34, and when the movable pin 21 is located in the through slot 34, the movable pin 21 squeezes the control component 3 to cause the control component 3 to deform, so that the movable pin 21 can be disengaged from the through slot 34 and separated from the control component 3.

[0080] Furthermore, the deformation of the parts of the control component 3 located on both sides of the through slot 34 may be elastic deformation or plastic deformation.

[0081] It is understandable that the thickness of the control component 3 at the connection with the movable pin 21 is smaller. Compared with the cylindrical movable pin 21, the control component 3 at the connection with the movable pin 21 is a mechanically weak point and is more prone to deformation.

[0082] In the above embodiment, it is defined that when the movable pin 21 is separated from the control assembly 3, the control assembly 3 is at least deformed to reduce the preset pulling force required to separate the control assembly 3 and the movable pin 21.

[0083] In some embodiments, please refer to 7 again. Fig.10 and Fig.11 The control component 3 has an extension slot 35 connected to the second assembly hole 33 and away from the through slot 34 . The extension slot 35 extends from the assembly hole toward the proximal end of the control component 3 .

[0084] Specifically, the extension groove 35 is provided on the pull buckle 32 .

[0085] In the above embodiment, the control component 3 is provided with an extension slot 35 connected to the second assembly hole 33, and the extension slot 35 is connected to the distal end of the second assembly hole 33, so that the range of the mechanically weak part becomes larger, so that the width of the through slot 34 of the control component 3 can be wider after deformation, and the deformation range of the control component 3 is larger after being subjected to the same preset tension. When the control component 3 is subjected to the same preset tension, the control component 3 provided with the extension slot 35 can be more easily separated from the movable pin 21, that is, the difficulty of operating the hemostatic clip for endoscope is reduced.

[0086] In some embodiments, please refer to 7 again. Fig.10 and Fig.11 The control component 3 has a crack-stopping hole 36 connected to the extension groove 35 , and the crack-stopping hole 36 is connected to a side of the extension groove 35 away from the second assembly hole 33 .

[0087] Specifically, the tear-stopping hole 36 is disposed on the buckle 32 .

[0088] It is understandable that the proximal end of the extended slot 35 generates concentrated gravitational force that causes the control component 3 to fail. Providing a stop hole 36 connected to the proximal end of the extended slot 35 can avoid the failure of the control component 3 and improve the reliability of the hemostatic clip for the endoscope.

[0089] In some embodiments, please refer again to Figure 4 and Fig. 9 , Fig. 9 A schematic diagram of the structure of a locking member 5 in a hemostatic clip for an endoscope provided in an embodiment of the present application, wherein the hemostatic clip for an endoscope comprises a catheter 4 and a locking member 5, a control component 3 is passed through the catheter 4, the catheter 4 has a first connecting hole 41, a clamp seat 1 has a second connecting hole 15, and the locking member 5 is passed through the first connecting hole 41 and the second connecting hole 15 to connect the catheter 4 and the clamp seat 1;

[0090] Please refer again Fig.14 When the movable pin 21 is in the locking position and the control component 3 is subjected to a preset pulling force, the control component 3 can abut and push the locking member 5 after disengaging from the movable pin 21, so that the locking member 5 disengages from the first connecting hole 41 and the second connecting hole 15, so as to separate the catheter 4 and the clamp seat 1.

[0091] Specifically, the locking member 5 includes at least two claws 51 and a base 52, the claw 51 is used to be inserted into the first connecting hole 41 and the second connecting hole 15, and the base 52 is provided with a through hole 53 for the cable 31 to pass through, and the base 52 is used to abut against the buckle 32 that has been separated from the movable pin 21; wherein, the claw 51 has a guiding slope, so that when the base 52 is squeezed by the buckle 32, the claw 51 can move toward the cable 31 so that the claw 51 at least disengages from one of the first connecting hole 41 or the second connecting hole 15, so that the clamp seat 1 is separated from the catheter 4.

[0092] In the above embodiment, the locking member 5 is provided so that the clamp seat 1 and the catheter 4 can be separated, thereby releasing the clip 22, so that the clip 22 is left on the wound surface for continuous hemostasis.

[0093] The use process of the hemostatic clip for endoscope:

[0094] 1. Control the movable pin 21 to be located at one side of the first limiting portion 13 close to the distal end of the clamp seat 1 to prevent the movable pin 21 from entering the locking position while keeping the two clamping pieces 22 closed;

[0095] 2. The hemostatic clip for endoscope is placed into the clamp channel to be delivered into the human body through the clamp channel;

[0096] 3. When the distal end of the clamp channel reaches the vicinity of the wound surface, extend the hemostatic clip for endoscope;

[0097] 4. Push the movable pin 21 to the far end of the guide groove 12 to open the two clamping pieces 22 to prepare to clamp the wound surface;

[0098] 5. Control the movable pin 21 to move from the distal end of the guide groove 12 to the proximal end, so that the two clips 22 are closed to clamp the wound surface;

[0099] 6. Control the movable pin 21 to pass through the first limiting portion 13 and move to the locking position. Fig.12 and Fig.13 ;

[0100] 7. Apply a preset tension to the cable 31 to separate the buckle 32 from the movable pin 21. Fig.14 ;

[0101] 8. Continue to apply tension to the pull cable 31 so that the buckle 32 abuts against the locking member 5, so as to separate the clamp seat 1 from the catheter 4, complete the release of the clip 22 and the clamp seat 1, leave the clip 22 on the wound surface, and apply a clamping force to the wound surface for a long time to stop bleeding.

[0102] 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) having a channel (11) extending therethrough, a guide groove (12) communicating with the channel (11), and an avoidance groove (14) spaced from the guide groove (12) along the circumference of the clamping seat (1), the clamping seat (1) comprising a first limiting portion (13), at least a portion of the first limiting portion (13) being located in the guide groove (12), and at least a portion of the first limiting portion (13) being located between the guide groove (12) and the avoidance groove (14); A clamping assembly (2), at least part of which is located in the channel (11), the clamping assembly (2) comprising a movable pin (21) and at least two clamping pieces (22) connected to each other, the movable pin (21) being inserted into the guide groove (12); the clamping assembly (2) is movable along the channel (11) relative to the clamping seat (1) so that the movable pin (21) is movable along the guide groove (12); The movable pin (21) is capable of moving along the guide groove (12) to a locking position, and the first limiting portion (13) is configured to be deformed into the avoidance groove (14) when being squeezed by the movable pin (21). The first limiting portion (13) is configured to be capable of limiting the movable pin (21) to the locking position, so that the at least two clips (22) are closed to each other and their positions relative to the clamping seat (1) are locked.

2. The hemostatic clip for endoscope according to claim 1, characterized in that: The first limiting portion (13) is configured to be elastically deformed when pressed by the movable pin (21), so that the movable pin (21) can move along the guide groove (12) and disengage from the first limiting portion (13).

3. The hemostatic clip for endoscope according to claim 1, characterized in that: The clamping seat (1) comprises a plurality of the first limiting portions (13), and at least a portion of the guide groove (12) is arranged between two of the first limiting portions (13) that are arranged opposite to each other.

4. The hemostatic clip for endoscope according to claim 1, characterized in that: The locking position is located at the proximal end of the guide groove (12).

5. The hemostatic clip for endoscope according to claim 1, characterized in that: The hemostatic clip for endoscope also includes: A control component (3), at least part of which is located in the channel (11), and the movable pin (21) is connected to the control component (3); the control component (3) can move along the channel (11) relative to the clamping seat (1) to drive the clamping component (2) to move.

6. The hemostatic clip for endoscope according to claim 5, characterized in that: The movable pin (21) comprises a connecting portion (211) and two second limiting portions (212), and two ends of the connecting portion (211) are respectively connected to the two second limiting portions (212); The clip (22) and the control assembly (3) are both connected to the connecting portion (211), and the second limiting portion (212) is used to limit the clip (22) and the control assembly (3) on the connecting portion (211) along the extension direction (X) of the movable pin (21).

7. The hemostatic clip for endoscope according to claim 5, characterized in that: The control assembly (3) comprises a pull cable (31) and a pull buckle (32), the movable pin (21) is connected to the pull buckle (32), the pull buckle (32) has a first assembly hole (321), and the pull cable (31) is embedded in the first assembly hole (321) to be connected to the pull buckle (32); When the movable pin (21) is located at the locking position and the pull cable (31) is subjected to a preset tension, the pull cable (31) can be disengaged from the first assembly hole (321), so that the pull cable (31) is disconnected from the buckle (32).

8. The hemostatic clip for endoscope according to claim 5, characterized in that: The control component (3) has a second assembly hole (33) and a through slot (34) communicating with the second assembly hole (33), wherein the through slot (34) extends from the assembly hole toward the distal end of the control component (3), and the movable pin (21) is inserted into the second assembly hole (33); When the movable pin (21) is located at the locking position and the control component (3) is subjected to a preset pulling force, the control component (3) can move along the through slot (34) relative to the movable pin (21), so that the movable pin (21) is separated from the control component (3) via the through slot (34).

9. The hemostatic clip for endoscope according to claim 8, characterized in that: The width of the movable pin (21) is greater than the width of the through slot (34); when the movable pin (21) is located in the through slot (34), the movable pin (21) squeezes the control component (3) to cause the control component (3) to deform, so that the movable pin (21) can be disengaged from the through slot (34) and separated from the control component (3).

10. The hemostatic clip for endoscope according to claim 9, characterized in that: The control component (3) has an extension slot (35) connected to the second assembly hole (33) and away from the through slot (34), and the extension slot (35) extends from the assembly hole toward the proximal end of the control component (3).

11. The hemostatic clip for endoscope according to claim 10, characterized in that: The control component (3) has a crack-stopping hole (36) connected to the extension groove (35), and the crack-stopping hole (36) is connected to a side of the extension groove (35) away from the second assembly hole (33).

12. The hemostatic clip for endoscope according to claim 5, characterized in that: The hemostatic clip for an endoscope comprises a catheter (4) and a locking member (5), the control component (3) is arranged on the catheter (4), the catheter (4) has a first connecting hole (41), the clamp seat (1) has a second connecting hole (15), and the locking member (5) is arranged on the first connecting hole (41) and the second connecting hole (15) to connect the catheter (4) and the clamp seat (1); When the movable pin (21) is located at the locking position and the control component (3) is subjected to a preset pulling force, the control component (3) can abut against and push the locking member (5) to disengage the locking member (5) from the first connecting hole (41) and the second connecting hole (15), thereby separating the catheter (4) and the clamp seat (1).

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