WO2023066242A1 - Clip applier - Google Patents

Abstract

A clip applier, comprising a jaw assembly (1) and an applied member, wherein the applied member is operatively located in the jaw assembly (1); and the jaw assembly (1) has a release mechanism that can drive the applied member to move, so that the applied member detaches from the jaw assembly (1). In the clip applier, the release mechanism is arranged in the jaw assembly (1), and the release mechanism can push a clip (7) out of the jaw assembly (1) when the jaw assembly (1) closes, so that when the jaw assembly (1) opens, the clip (7) is not pulled, and thus the clip (7) does not pull the tissue, thereby reducing the risks of minimally invasive surgery.

Description

Clip Applier

related application

This application claims the priority of the Chinese patent application with the application number 202111215031.5 and the application name "Clamp Applier" submitted to the China Patent Office on October 19, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the field of medical devices, in particular to a clip applier.

Background technique

In minimally invasive procedures, clips are commonly used to hold tissue or blood vessels. The clip has two opposite clamping arms, and the two clamping arms can be closed to fix the target tissue between the two clamping arms, so as to play the role of hemostasis, ligation and closure.

The clip is generally placed in the clip applier, which is fixed on the tissue by the clip applier. The clip applier has a jaw assembly. When applying a clip, the clip is pushed into the jaw assembly. By closing the jaw assembly, the clip located in the jaw assembly can be clamped on the tissue.

In the clip applier in the prior art, after the clip is engaged to clamp the tissue in response to the closing of the jaw assembly, there is a phenomenon that the clip and the jaw assembly are not disengaged, so that when the jaw assembly of the clip applier is opened When it is used, the jaw assembly will exert force on the clip, causing the clip to tear the tissue, increasing the risk of minimally invasive surgery.

Based on the above, it is necessary to improve the clip applier in the prior art.

application content

In view of the deficiencies in the prior art, the present application aims to provide a clip applier, which solves the problem that when the jaw assembly is opened, a force will be exerted on the clip arm of the clip, causing the clip arm to tear the tissue.

The application is realized through the following technical solutions:

A clip applier, comprising a jaw assembly and an applied part, the applied part is operatively located in the jaw assembly, the jaw assembly has a release mechanism, the release mechanism can drive the affected part to move, so that the applied part is separated from the jaw Mouth components.

Advantageously, the release mechanism comprises a release assembly having a first member and a second member connected; in response to a force applied to the first member, the first member moves in a first direction such that the second member moves in a second direction Movement to drive the affected part to move, and then to disengage the affected part from the jaw assembly.

Further preferably, the motion is rotation.

Preferably, the first direction is the same as the second direction.

Preferably, the jaw assembly includes a pliers arm, and the release assembly is pivotally connected to the pliers arm.

Further preferably, the release mechanism further includes an elastic element, and the elastic element is arranged between the first element and the pliers arm.

Preferably, the jaw assembly includes a pliers arm, and the release assembly is movably arranged on the pliers arm; the affected part is a clip, and at least a part of the clip is operatively located in the pliers arm; at least a part of the clip is driven by the second element so as to communicate with the pliers arm detached.

Preferably, the second element has a first position and a second position, when the jaw assembly is in an open state, the second element is located at the first position, and when the jaw assembly is in a closed state, the second element is located at the second position; the response When the jaw assembly is closed, a force is applied to the first element, so that the second element moves from the first position to the second position along the second direction to drive the affected part to move; the release mechanism also includes a holding mechanism, when the jaw assembly is moved by When the closed state is switched to the open state, the holding mechanism returns the second element to the first position and keeps it in the first position.

Further preferably, the jaw assembly includes a pliers arm, and the release assembly is movably arranged on the pliers arm; the holding mechanism is an elastic element, and the elastic element is arranged between the release assembly and the pliers arm.

Preferably, the affected part is a clip, the clip includes two clip arms, the jaw assembly includes two clip arms, at least a part of one clip arm is operatively located in one clip arm, and at least a part of the other clip arm is operable Located in the other pliers arm; at least one pliers arm is provided with a release mechanism, the release mechanism includes a release assembly having a connected first element and a second element, the first element moves along the Movement in the first direction causes the second element to move in the second direction to drive at least a portion of the clamp arm in the clamp arm where the release mechanism is located, thereby disengaging the clamp arm from the clamp arm.

Further preferably, each clamping arm has an ear, at least a part of the clamping arm including the ear.

Further preferably, the first element includes a first force-receiving part, and in response to the closing of the jaw assembly, the first force-receiving part is abutted against at least a part of the pliers arm that is different from the pliers arm where the first force-receiving part is located, so as to push toward the first force-receiving part. The element exerts force.

Further preferably, one pliers arm is provided with a first release mechanism, and the other pliers arm is provided with a second release mechanism.

Further preferably, both the first element of the first release mechanism and the first element of the second release mechanism include a first force-receiving part; in response to the closing of the jaw assembly, the first force-receiving part of the first release mechanism and the second release force The first force-receiving part of the mechanism abuts to apply force to the two first elements respectively.

Further preferably, the clip has a first state and a second state, at least one pliers arm has an elastic piece, and in the first state, the elastic piece abuts against the ear in the pliers arm where it is located, so that the elastic piece can exert a force on the ear, thereby making the The ear is operatively located in the arm of the pliers, and in the second state, the ear is disengaged from the shrapnel.

Compared with the prior art, the beneficial effect of the present application is that the clip applier of the present application is provided with a release mechanism in the jaw assembly, and the release mechanism can push the clip to move when the jaw assembly is closed to separate the clip from the jaw assembly. Therefore, when the jaw assembly is opened, the jaw assembly will not pull the clip, so that the clip will not pull tissue or blood vessels, reducing the risk of minimally invasive surgery.

Description of drawings

Fig. 1 is a schematic structural view of the clip applier provided by the specific embodiment of the present application;

Fig. 2 is a cross-sectional view of a partial area of the clip applier provided in the specific embodiment of the present application;

Fig. 3 is a cross-sectional view of the shaft assembly of the clip applier provided in the specific embodiment of the present application, wherein the push clip assembly is not in contact with the clip;

Fig. 4 is a cross-sectional view of the shaft assembly of the clip applier provided in the specific embodiment of the present application, wherein the push clip assembly abuts against the clip and pushes the clip into the jaw assembly;

Fig. 5 is a schematic structural view of a clip provided in a specific embodiment of the present application;

Fig. 6 is a schematic structural view of the jaw assembly of the clip applier in the prior art;

Fig. 7 is a schematic structural view of a jaw assembly provided in a specific embodiment of the present application;

Fig. 8 is a cross-sectional view of the first angle of the jaw assembly provided by the specific embodiment of the present application, wherein the jaw assembly is in an open state;

Fig. 9 is a cross-sectional view of the second angle of the jaw assembly provided by the specific embodiment of the present application, wherein the jaw assembly is in an open state;

Fig. 10 is a cross-sectional view of the second angle of the jaw assembly provided by the specific embodiment of the present application, wherein the jaw assembly is in an open state, and a clip is provided in the jaw assembly;

Fig. 11 is a schematic structural view of another angle of the jaw assembly provided by the specific embodiment of the present application, wherein the jaw assembly is in an open state, and a clip is provided in the jaw assembly;

Fig. 12 is a schematic structural diagram of a release assembly provided in a specific embodiment of the present application;

Fig. 13 is a structural schematic diagram of another angle of the release assembly provided by the specific embodiment of the present application;

Fig. 14 is a schematic diagram of the mode of cooperation between the clip and the release assembly provided in the specific embodiment of the present application;

Fig. 15 is a cross-sectional view of the jaw assembly provided by the specific embodiment of the present application, wherein the jaw assembly is in the closing process but not completely closed, and the jaw assembly is provided with a clip and the clip is not completely closed;

Fig. 16 is a cross-sectional view of the jaw assembly provided in the specific embodiment of the present application, wherein the jaw assembly is in a closed state, and a clip is provided in the jaw assembly and the clip is also in a closed state;

Fig. 17 is a schematic diagram of the positional relationship between the clip and the second elastic piece in the closed state of the jaw assembly provided by the specific embodiment of the present application;

Fig. 18 is a schematic diagram of another angle in Fig. 17;

Reference signs of the above drawings:

1-jaw assembly; 101-first tong arm; 102-second tong arm; 103-first shrapnel; 104-second shrapnel; 1011-first bottom wall; 1012-first side wall; 1021-second Bottom wall; 1022-second side wall; 2-wrench; 201-resisting part; 3-housing; 4-shaft assembly; ;403-elastic push rod; 404-push clamp block; 5-drive tube; 501-block; 6-elastic body; 7-clip; Ear; 704-Second Ear; 705-Clamping Part; 8-Release Assembly; 801-First Element; 802-Second Element; 803-Installation Groove; 804-First Column; 805-Push Arm; 8051-recessed part; 8052-guiding slope; 9-elastic element; 10-pin shaft; 11-moving part; 12-second cylinder; 13-second accommodating part.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be understood that the terms "proximal", "rear" and "distal", "anterior" as used herein are relative to the clinician manipulating the handle of the clip applier. The terms "proximal" and "posterior" refer to the part close to the clinician, and the terms "distal" and "anterior" refer to the part away from the clinician. That is, the handle is the proximal end, and the jaw assembly 1 is the distal end. For example, the proximal end of a component means the end relatively close to the handle, and the far end means the end relatively close to the jaw assembly 1. The terms "upper" and "lower" refer to the relative positions of the first pliers arm 101 and the second pliers arm 102 of the jaw assembly 1, specifically, the first pliers arm 101 is "upper" and the second pliers arm 102 in the "down". However, the clip applier can be used in many orientations and positions, so these terms expressing relative positional relationships are not limiting and absolute.

In this application, unless otherwise specified and limited, terms such as "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or a movable connection , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements such as butting. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. It should be noted that when there is a qualifier before "connected" or "connected", it has the meaning defined by the corresponding qualifier, and only the circumstances that obviously need to be excluded are excluded, and other possible situations are not excluded.

The term "axial" as used herein refers to the lengthwise direction of the sleeve 401 .

Figures 1-4 and Figures 7-18 show the surgical instrument according to the embodiment of the present application, specifically a clip applier, which is used to apply the clip 7 to the human body, such as blood vessels or other tissues except blood vessels.

Referring to the accompanying drawing 1 , the clip applier includes an operating assembly, a shaft assembly 4 extending from the operating assembly, a transmission mechanism and a jaw assembly 1 disposed at the distal end of the shaft assembly 4 .

The operating assembly includes a housing 3 and a wrench 2 , and the wrench 2 is movably mounted on the housing 3 .

Referring to FIGS. 3-4 , the shaft assembly 4 includes a cartridge, a base 402 , a push clip assembly and a sleeve 401 sleeved on the cartridge, the base 402 , and the push clip assembly. The base 402 has strong rigidity. The base 402 is provided with a guide groove 4021 for receiving the push clamp assembly and for its axial movement. The distal end of the guide groove 4021 is provided with a guide slope 4022, which is at an angle to the axial direction. set up. When the base 402 and the cartridge are installed together, the guiding inclined surface 4022 faces the distal end and is inclined toward the cartridge. Before clamping, the clip 7 is placed in the clip box, and the side wall of the clip box is provided with an opening corresponding to the guide inclined surface 4022, and the far end of the push clip assembly can enter the clip box from the opening and abut against the rear end of the clip Attach the clip to propel it forward. Specifically, the push clip assembly includes an elastic push rod 403 and a push clip block 404 connected to the distal end of the elastic push rod 403 . The elastic push rod 403 is formed by stacking a plurality of metal sheets, has elasticity and can be bent. The elastic push rod 403 and the push clamp block 404 can move axially in the guide groove 4021 . Referring to FIG. 4 , when the elastic push rod 403 moves to the distal end until the push clamp block 404 touches the guide slope 4022, the elastic push rod 403 begins to bend, and the push clamp block 404 obliquely enters from the opening of the cartridge along the guide slope 4022 In the cartridge box, the rear end of the clip 7 in the cartridge box abuts against the clip 7 to push it forward, so that the clip 7 can enter the jaw assembly 1 . After the clip 7 enters the jaw assembly 1 , the clip pushing block 404 at the distal end of the elastic push rod 403 continues to abut against the clip 7 from the rear end of the clip 7 to prevent the clip 7 from moving proximally during clip application. The jaw assembly 1 is closed so that the clip 7 is closed. When the jaw assembly 1 is opened again, the elastic push rod 403 moves axially and proximally in the guide groove 4021, driving the push clamp block 404 to retreat from the opening to the guide along the guide slope 4022. slot 4021. A push clip driving mechanism is provided in the shaft assembly 4 to apply force to the elastic push rod 403 , and the push clip driving mechanism can push the elastic push rod 403 to move toward the distal end or the proximal end.

Referring again to FIGS. 1-2 , the jaw assembly 1 includes two pliers arms pivotally connected to the shaft assembly 4 , namely a first pliers arm 101 and a second pliers arm 102 .

The transmission mechanism includes a jaw driving mechanism. The jaw drive mechanism includes a drive tube 5 and a sleeve 401 . The driving tube 5 is accommodated in the housing 3 of the operating assembly, the proximal end of the sleeve 401 is connected to the driving tube 5 , and the distal end of the sleeve 401 is matched with the jaw assembly 1 . Specifically, there is an elastic member between the two arms of the jaw assembly 1. When the sleeve tube 401 moves to the distal end, the jaw assembly 1 can be accommodated in the sleeve tube 401 from the distal end of the sleeve tube 401. When the elastic member is compressed, the jaw assembly 1 is closed. When the sleeve 401 moves proximally, the jaw assembly 1 can protrude from the distal end of the sleeve 401, and the elastic releases energy to open the jaw assembly 1 . Elastic part can select spring for use. The bushing 401 also forms part of the shaft assembly 4 .

One end of the wrench 2 is provided with a resisting portion 201 , and the resisting portion 201 is located in the housing 3 . A moving part 11 is provided at a proximal end of the driving tube 5 , and the resisting part 201 abuts against an end of the moving part 11 away from the driving tube 5 . Thus, by pressing the wrench 2 , the pushing part 201 can push the moving part 11 to move distally, so that the moving part 11 pushes the driving tube 5 and the cannula 401 to move distally.

The drive tube 5 is sheathed with an elastic body 6 . The proximal end of the elastic body 6 abuts against the stopper 501 on the outer surface of the drive tube 5 , and the distal end of the elastic body 6 abuts against the inner wall of the housing 3 of the clip applier. When the wrench 2 is pressed, the pushing part 201 pushes the driving tube 5 to move to the distal end, and the sleeve 401 can be moved to the distal end so that the first pliers arm 101 and the second pliers arm 102 are closed. At this time, the elastic body 6 is stored energy. When the wrench 2 is released, the elastic body 6 releases energy to make the drive tube 5 move proximally to reset, so that the sleeve 401 moves proximally to open the first pliers arm 101 and the second pliers arm 102 . In this embodiment, the elastic body 6 can be a spring.

A clip 7 can be supported between the first tong arm 101 and the second tong arm 102 . The jaw assembly 1 is switched between an open state and a closed state. The open state of the jaw assembly 1 includes the state of opening to the bottom, and at this moment, the distance between the distal ends of the first pliers arm 101 and the second pliers arm 102 in the up-down direction is the largest. When the jaw assembly 1 is in the closed state, the distance between the distal ends of the first pliers arm 101 and the second pliers arm 102 in the vertical direction is the smallest, and the closing of the jaw assembly 1 makes the clip 7 change from the open state to the closed state.

Referring to FIG. 5 , the clip includes two clamping arms, namely a first clamping arm 701 and a second clamping arm 702 . One end of the first clamping arm 701 has two first ear portions 703, one first ear portion 703 is arranged on one side of the first clamping arm 701, and the other first ear portion 703 is arranged on the opposite side of the first clamping arm 701. side. One end of the second clip arm 702 has an engaging portion 705 . When the clip 7 is closed, the engaging portion 705 of the second clamping arm 702 can be engaged between the two first ear portions 703 of the first clamping arm 701, so that the first clamping arm 701 and the second clamping arm 702 fully Clamping, so that the blood vessel or tissue placed between the first clamping arm 701 and the second clamping arm 702 can be effectively clamped to stop bleeding. In order to install the clip 7 in the clip applier conveniently, a second ear portion 704 is provided on both sides of the second clip arm 702 to play a limiting role. The two second ear portions 704 are symmetrically disposed on two side walls of the second clip arm 702 , and are disposed close to one end of the second clip arm 702 having the engaging portion 705 .

Referring to FIG. 6 , in the prior art clip applier, the distal end of the first clamp arm 101 is provided with two first accommodating portions corresponding to the two first ear portions 703 of the first clamp arm 701 . The distal end of the second clamp arm 102 is provided with two second accommodating portions 13 corresponding to the two second ear portions 704 of the second clamp arm 702 . After the clamp block 404 at the distal end of the elastic push rod 403 pushes the clip 7 from the shaft assembly 4 to the jaw assembly 1, each first ear 703 is accommodated in its corresponding first accommodating portion , each second ear portion 704 is accommodated in its corresponding second accommodating portion 13 . Before clipping, the clip 7 is placed in a clip box in the clip applier shaft assembly 4 . Limited by the size and internal space of the cartridge, the clip 7 is stored in the cartridge after being compressed. Compressed means that the two arms of the clip 7 are close to each other, but not engaged. Since the clip 7 will continue to be used for a period of time since it is assembled into the cartridge case, the compression during this period will make the clip 7 still tend to maintain its compressed shape when it is pushed out into the jaw assembly 1, causing serious damage to its use. had a certain impact.

In order to overcome the technical problem that the clip 7 still maintains its compressed shape after being pushed out and affects its use, the clip applier in the prior art is provided with a first elastic piece 103 in the first pliers arm 101 , and in the second pliers arm 102 A second shrapnel 104 is provided. When the clip 7 is pushed from the shaft assembly to the jaw assembly 1, each first ear 703 moves between the corresponding first elastic piece 103 and the first pliers arm 101, and each second ear 704 It moves between the corresponding second elastic piece 104 and the second pliers arm 102 . Thus, each first elastic piece 103 can act as a stopper for the corresponding first ear portion 703 when the first clamping arm 701 moves to the distal end, and each second elastic piece 104 can stop at the second clamping arm 701. 702 acts as a stopper for the corresponding second ear portion 704 when it moves to the distal end, thereby enabling the first clamping arm 701 and the second clamping arm 702 to gradually expand to restore their original shape. When each first ear portion 703 of the clip 7 moves into its corresponding first accommodating portion, and each second ear portion 704 moves into its corresponding second accommodating portion 13, the distance of the first elastic piece 103 The distal end of the second elastic piece 104 abuts against the corresponding first ear portion 703 , and the distal end of the second elastic piece 104 abuts against the corresponding second ear portion 704 . When the jaw assembly 1 is closed so that the first clamping arm 701 and the second clamping arm 702 are closed, so that the clip 7 is clamped on the tissue or blood vessel, it is easy to happen that the first ear 703 is not separated from the first elastic piece 103, and the second The phenomenon that the two ears 704 are not separated from the second elastic piece 104, so when the jaw assembly 1 is opened, the jaw assembly 1 will exert force on the first clamp arm 701 and the second clamp arm 702, causing the clip 7 to cause damage to the tissue Tearing increases the risk of minimally invasive surgery.

In order to overcome the technical problem that the clip 7 in the clip applier is difficult to disengage from the jaw assembly 1 in the prior art, this embodiment improves the clip applier in the prior art. The jaw assembly 1 of the clip applier in this embodiment has a release mechanism. The release mechanism can drive the clip 7 in the jaw assembly 1 to move, so that the clip 7 is separated from the jaw assembly 1 . A release mechanism is provided in the first pliers arm 101 and/or the second pliers arm 102. Preferably, the front ends of the first pliers arm 101 and the second pliers arm 102 of the clamp applier in this embodiment are both provided with a release mechanism. Each release mechanism includes a release assembly 8 , an elastic element 9 and a pin 10 .

The release assembly 8 has a first element 801 and a second element 802 connected. In order to facilitate installation and manufacture, the first element 801 and the second element 802 are integrated in this embodiment. The first element 801 is located at the distal end of the release assembly 8 and the second element 802 is located at the proximal end of the release assembly 8 .

The elastic element 9 is disposed at the distal end of the release assembly 8 , and the first element 801 is also located at the distal end of the release assembly 8 , that is, the position of the first element 801 is corresponding to the position of the elastic element 9 . The end surface of the release assembly 8 facing away from the first element 801 is provided with an installation groove 803 corresponding to the elastic element 9, and a first cylinder 804 is arranged in the installation groove 803, and one end of the elastic element 9 is set in the installation groove 803 and sleeved on the first cylinder 804 . By arranging the first column 804 and the installation groove 803 , the elastic element 9 can be limited, so that the position of the elastic element 9 will not be shifted. In this embodiment, the elastic element 9 can be a spring.

The pin shaft 10 is passed through the release assembly 8 , and the pin shaft 10 is disposed between the first element 801 and the second element 802 . The release assembly 8 is pivotally connected to the corresponding pincer arm through a pin shaft.

Referring to FIG. 9 , the first tong arm 101 includes a first bottom wall 1011 and first side walls 1012 disposed on both sides of the first bottom wall 1011 . The second tong arm 102 includes a second bottom wall 1021 and second side walls 1022 disposed on two sides of the second bottom wall 1021 .

7-11 , in the first pliers arm 101 , both ends of the pin 10 are respectively connected to the two first side walls 1012 of the first pliers arm 101 , so that the release assembly 8 can rotate around the pin 10 . The elastic element 9 is disposed between the release assembly 8 and the first bottom wall 1011 of the first pliers arm 101 . Specifically, the distal end of the release assembly 8 cooperates with the first bottom wall 1011 through the elastic element 9 . A second cylinder 12 is disposed in the first bottom wall 1011 of the first pliers arm 101 corresponding to the elastic element 9 . One end of the elastic element 9 is sleeved on the first cylinder 804 of the release assembly 8 and abuts against the release assembly 8 , and the other end of the elastic element 9 is sleeved on the second cylinder 12 and connected to the first cylinder 804 of the first pliers arm 101 . A bottom wall 1011 is in contact with each other. The end surface of the first cylinder 804 facing the first bottom arm can extend out of the installation groove 803, or be flush with the end surface of the installation groove 803 facing the first bottom arm. The first cylinder 804 can also be completely located in the installation groove 803, but the second There is a preset distance between the first cylinder 804 and the second cylinder 12 when the jaw assembly 1 is in the open state, so as to avoid hindering the rotation of the release assembly 8 .

In the second tong arm 102 , both ends of the pin shaft 10 are respectively connected to two second side walls 1022 of the second tong arm 102 , so that the release assembly 8 can rotate around the pin shaft 10 . The elastic element 9 is disposed between the release assembly 8 and the second bottom wall 1021 of the second pliers arm 102 . Specifically, the distal end of the release assembly 8 cooperates with the second bottom wall 1021 through the elastic element 9 . A second cylinder 12 is disposed in the second bottom wall 1021 of the second pliers arm 102 corresponding to the elastic element 9 . One end of the elastic element 9 is sleeved on the first cylinder 804 of the release assembly 8 and abuts against the release assembly 8 , and the other end of the elastic element 9 is sleeved on the second cylinder 12 and connected to the first cylinder 804 of the second pliers arm 102 . The two bottom walls 1021 abut against each other. The end surface of the first cylinder 804 facing the second bottom arm can extend out of the installation groove 803, or be flush with the end surface of the installation groove 803 facing the second bottom arm. The first cylinder 804 can also be completely located in the installation groove 803, but the second There is a preset distance between the first cylinder 804 and the second cylinder 12 when the jaw assembly 1 is in the open state, so as to avoid hindering the rotation of the release assembly 8 .

In the first pliers arm 101 , the first element 801 extends in the direction of the second pliers arm 102 and the first element 801 protrudes relative to the first pliers arm 101 . The second element 802 comprises two push arms 805 arranged in parallel. The two push arms 805 are arranged corresponding to the two first ear portions 703 of the first clip arm 701 . Each push arm 805 extends towards the second pliers arm 102 . Referring to accompanying drawings 8-14, the end face of each push arm 805 facing the second pliers arm 102 is provided with a recessed portion 8051 and a guide slope 8052 in sequence from its distal end to its proximal end, and the distal end of the guide slope 8052 and the recessed portion 8051 connected. When the jaw assembly 1 is in the open state, the elastic element 9 can apply a downward force to the distal end of the release mechanism, so that the proximal end of the release mechanism abuts against the first pliers arm 101, since the second element 802 is located in the release mechanism The proximal end of the guide slant 8052 of each push arm 805 is connected to the first bottom wall 1011 of the first forceps arm 101 . By setting the guiding slope 8052 , a smooth transition is made between the concave portion 8051 of each push arm 805 and the first bottom wall 1011 of the first pliers arm 101 . Thus, it is convenient for the first ear portion 703 to move from the first bottom wall 1011 to the corresponding guide slope 8052 , and then slide over the guide slope 8052 to move into the corresponding recessed portion 8051 .

In the second pliers arm 102 the first element 801 extends in the direction of the first pliers arm 101 and the first element 801 protrudes relative to the second pliers arm 102 . The second element 802 comprises two push arms 805 arranged in parallel. The two push arms 805 are arranged corresponding to the two second ear portions 704 of the second clip arm 702 . Each push arm 805 extends toward the first pliers arm 101 . The end surface of each push arm 805 facing the first pliers arm 101 is sequentially provided with a recessed portion 8051 and a guiding slope 8052 from its distal end to its proximal end. The distal end of the guiding slope 8052 is in contact with the concave portion 8051 . When the jaw assembly 1 is in the open state, the elastic element 9 can apply an upward force to the distal end of the release mechanism, so that the proximal end of the release mechanism abuts against the second pliers arm 102, since the second element 802 is located at the end of the release mechanism The proximal end, so that the proximal end of the guide slope 8052 of each push arm 805 contacts the second bottom wall 1021 of the second forceps arm 102 . By setting the guide slope 8052 , a smooth transition is made between the concave portion 8051 of each push arm 805 and the second bottom wall 1021 of the second pliers arm 102 . Thus, it is convenient for the second ear portion 704 to move from the second bottom wall 1021 to the corresponding guide slope 8052 , and then slide over the guide slope 8052 to move into the corresponding recessed portion 8051 .

Focusing on accompanying drawings 15-18, when the jaw assembly 1 is closed, the first element 801 in the first pliers arm 101 and the first element 801 in the second pliers arm 102 can abut against each other, so that the first pliers arm 101 and the second pliers arm 101 The release mechanism in the two pliers arms 102 can rotate in opposite directions, so that the release mechanism in the first pliers arm 101 can push the first ear 703 to move, and the release mechanism in the second pliers arm 102 can push the second ear 704 Movement, so that the clip arm of the clip 7 is detached from the jaw assembly 1. Specifically, each first element 801 includes a first force-receiving part. When the jaw assembly 1 is closed, the first force-receiving part of the first element 801 in the first pliers arm 101 and the first force-receiving part in the second pliers arm 102 The first force-receiving parts of the elements 801 are opposed so that the two first elements 801 can apply force to each other. In response to the force exerted on the first force-receiving part of the first element 801, the release assembly 8 rotates around the pin shaft 10, that is, the first element 801 can rotate along the first direction, so that the corresponding second element 802 can rotate along the first direction. Rotating in two directions can push the clip 7 to move, so that the clip 7 is separated from the jaw assembly 1 .

In this embodiment, the first direction and the second direction are the same direction.

With emphasis on referring to FIGS. 8-9 and 11 , two first elastic pieces 103 are provided in the first pliers arm 101 . The two first elastic pieces 103 are generally arranged along the extending direction of the first pliers arm 101 . A proximal end of one of the first elastic pieces 103 is connected to one of the first side walls 1012 , and a proximal end of the other first elastic piece 103 is connected to the other first side wall 1012 . The distal end of each first shrapnel 103 can move up and down. There is a preset distance between each first elastic piece 103 and the first bottom wall 1011 , so that each first ear portion 703 can move between its corresponding first elastic piece 103 and the first bottom wall 1011 .

Focusing on FIGS. 7-9 , the second clamp arm 102 is provided with two second elastic pieces 104 . Each second elastic piece 104 is generally arranged along the extending direction of the second pliers arm 102, wherein the proximal end of one second elastic piece 104 is connected to one of the second side walls 1022, and the proximal end of the other second elastic piece 104 is connected to the other A second side wall 1022 is connected. The distal end of each second elastic piece 104 can move up and down. There is a preset distance between each second elastic piece 104 and the second bottom wall 1021 , so that each second ear portion 704 can move between its corresponding second elastic piece 104 and the second bottom wall 1021 .

Referring to accompanying drawings 10-11 again, when the clamping block 404 at the distal end of the elastic push rod 403 pushes the clamp 7 to move in the jaw assembly 1, the first clamping arm 701 moves along the first clamping arm 101, and the second clamping arm 702 moves along the first clamping arm 101. The second clamp arm 102 moves. Specifically: the first clamping arm 701 generally moves between the two first elastic pieces 103, and each first ear portion 703 of the first clamping arm 701 moves between the corresponding first elastic piece 103 and the first clamp arm 101. Moving between the first bottom walls 1011 , each first ear portion 703 can move onto the corresponding guiding slope 8052 , and then slide over the guiding slope 8052 to move into the corresponding concave portion 8051 . Due to the provision of the first elastic piece 103, when each first ear portion 703 is located in the corresponding concave portion 8051, the distal end of each first elastic piece 103 can abut against the corresponding first ear portion 703, so that the first ear portion 703 An ear portion 703 is held against the corresponding recessed portion 8051 .

The second clamping arm 702 generally moves between the two second elastic pieces 104, and each second ear portion 704 of the second clamping arm 702 is on the second bottom wall of the corresponding second elastic piece 104 and the second clamping arm 102. 1021 , each second ear portion 704 can move onto its corresponding guide slope 8052 , and then slide over the guide slope 8052 to move into its corresponding recessed portion 8051 . Due to the provision of the second elastic piece 104, when each second ear portion 704 is located in the corresponding recessed portion 8051, the distal end of each second elastic piece 104 can be against the corresponding second ear portion 704, so that the second ear portion 704 The two ear portions 704 are held against the corresponding recessed portion 8051 .

Thus, when the clip 7 moves in the jaw assembly 1, each first elastic piece 103 can act as a stopper for the corresponding first ear portion 703 when the first clamp arm 701 moves far away, and each first elastic piece 103 The second elastic piece 104 can act as a stopper for the corresponding second ear portion 704 when the second clamp arm 702 moves far away, so that the first clamp arm 701 and the second clamp arm 702 of the clip 7 can be gradually expanded to return to its original shape. It should be noted that the structures of the clip box, the base, the push clamp assembly and the operation mode of the push clamp assembly in the shaft assembly 4 in this embodiment will not affect the function of the release mechanism in the jaw assembly 1 .

Focusing on accompanying drawings 15-18, for the release mechanism in the first pliers arm 101, when the jaw assembly 1 is closed, in response to the force exerted on the first force-receiving part of the first element 801, the first element 801 moves along the Rotating in a clockwise direction causes the second member 802 to rotate in a clockwise direction. Thus, each push arm 805 of the second element 802 can drive the first ear 703 located in its recess 8051 to move, so that each first ear 703 has a movement towards the distal end and towards the second forceps arm 102 , so that the two first ear parts 703 can both be disengaged from the corresponding first elastic piece 103 under the push of the corresponding second element 802 to disengage from the first pliers arm 101 .

15-18, for the release mechanism in the second pliers arm 102, when the jaw assembly 1 is closed, in response to the force exerted on the first force-receiving part of the first element 801, the first element 801 moves along Rotate counterclockwise, so that the second element 802 rotates counterclockwise, thus, each push arm 805 of the second element 802 can drive the second ear 704 located in its recess 8051 to move, so that each second The ear portion 704 has a movement toward the distal end and toward the first forceps arm 101, so that the two second ear portions 704 can be pushed by the corresponding second element 802 to disengage from the corresponding second elastic piece 104 to disengage from the second pincer arm 101. Clamp arm 102.

With emphasis on FIG. 15 , the first element 801 in the first pliers arm 101 is convex relative to the first pliers arm 101 , while the first element 801 in the second pliers arm 102 is convex relative to the second pliers arm 102 Therefore, during the closing process of the first tong arm 101 and the second tong arm 102, the first force-receiving parts of the two first elements 801 will be closed before the first tong arm 101 and the second tong arm 102 are completely closed. Push against each other to apply force to each other, so that the two second elements 802 move, that is, before the jaw assembly 1 reaches the fully closed state, the two second elements 802 have pressed against the first ear 703 and the second ear respectively. 704 applies force to push the first ear part 703 and the second ear part 704 to move. Specifically, before the jaw assembly 1 is completely closed, when the first force-receiving parts of the two first elements 801 push against each other, the two second elements 802 generate a pushing force on the ears of the clip 7, so that the clip 7 is compressed but not fully closed. When the jaw assembly 1 is fully closed, under the push of the two second elements 802, the engaging portion 705 of the second clip arm 702 is engaged between the two first ear portions 703 of the first clip arm 701, and the clip 7 is fully closed, at this time each first ear portion 703 is separated from the corresponding first elastic piece 103, and each second ear portion 704 is separated from the corresponding second elastic piece 104.

The first force-receiving parts of the two first elements 801 will push against each other before the first pliers arms 101 and the second pliers arms 102 are completely closed, so that the two second elements 802 generate a pushing force on the ears of the clip 7, at this time The ears of the clip 7 may have been separated from the corresponding elastic pieces, that is, the ears of the clip 7 may have been separated from the corresponding elastic pieces before the jaw assembly 1 is closed. Or, when the jaw assembly 1 is fully closed, the ears of the clip 7 are separated from the elastic pieces. When the clip 7 is pushed by the two second elements 802 so that the clip 7 is compressed and gradually achieves complete closure, the two first ear portions 703 and the two second ear portions 704 of the clip 7 are always placed in the corresponding positions. In the recessed part 8051, until the jaw assembly 1 is opened, the two first ear parts 703 and the two second ear parts 704 are separated from the corresponding recessed part 8051 respectively. And the closing of the jaw assembly 1 is a fast closing process. If the ear of the clip 7 breaks away from the shrapnel before the jaw assembly 1 is fully closed, the time difference from when the ear of the clip 7 leaves the shrapnel to when the jaw assembly 1 reaches a fully closed state Smaller, the ears of the clip 7 can still be closed normally after breaking away from the shrapnel. To sum up, during the closing process of the jaw assembly 1 , no matter when the ears of the clip 7 are detached from the shrapnel, the closing of the clip 7 will not be affected.

In this embodiment, when the jaw assembly 1 is closed and the jaw assembly 1 is opened, the movement direction of the first element 801 and the second element 802 in the first pliers arm 101 is described, and the movement direction of the first element 802 in the second pliers arm 102 is described. The description of the moving directions of the component 801 and the second component 802 is based on the direction and angle of the clip applier shown in FIG. 1 .

For the first pliers arm 101, when the first element 801 rotates clockwise, the distal end of the release assembly 8 moves toward the first pliers arm 101 at the same time, so that the elastic force between the release assembly 8 distal end and the first pliers arm 101 Element 9 is compressed. When the second element 802 rotates clockwise, the guiding slope 8052 of the second element 802 is separated from the first pliers arm 101 . For the second pliers arm 102, when the first element 801 rotates counterclockwise, the distal end of the release assembly 8 moves toward the second pliers arm 102 simultaneously, so that the elastic force between the release assembly 8 distal end and the second pliers arm 102 Element 9 is compressed. When the second element 802 rotates in the counterclockwise direction, the guiding slope 8052 of the second element 802 disengages from the second pliers arm 102 .

After the jaw assembly 1 finishes clipping, the jaw assembly 1 is opened, and the clip 7 has been transferred from the jaw assembly 1 to the tissue or blood vessel. Under the action of the elastic element 9, the first clamp arm 101 and the second The release mechanisms in the pincer arms 102 are all reset. Specifically, for the first pliers arm 101, when the jaw assembly 1 is opened, the force applied to the first force-receiving part of the first element 801 is released, and the compressed elastic element 9 can drive the first element 801 along the Rotate counterclockwise to reset, and at the same time drive the second element 802 to rotate counterclockwise to reset. For the second pliers arm 102, when the jaw assembly 1 is opened, the force applied to the first force-receiving part of the first element 801 is released, and the compressed elastic element 9 can drive the first element 801 to rotate clockwise. and reset, and at the same time drive the second element 802 to rotate clockwise to reset. In other words, each second element 802 has a first position and a second position. When the jaw assembly 1 is in an open state, the second element 802 is in the first position. When the jaw assembly 1 is in the closed state, the second element 802 is located at the second position. In response to the closing of the jaw assembly 1 , the second member 802 can move along the second direction from the first position to the second position, so as to push the ear to disengage from the elastic piece. When the jaw assembly 1 switches from the closed state to the open state, the elastic element 9 can return the second element 802 to the first position and keep it at the first position. For the first pliers arm 101, the elastic element 9 resets the second element 802 and maintains it at the first position, so that the proximal end of the guide slope 8052 of the second element 802 is in contact with the first bottom wall 1011 of the first pliers arm 101. Connect it for the next clamping application. For the second pliers arm 102, the elastic element 9 resets the second element 802 and maintains it at the first position, so that the proximal end of the guide slope 8052 of the second element 802 can be aligned with the second bottom wall 1021 of the second pliers arm 102. Connect it for the next clamping application. From the perspective of the clip 7, the clip 7 has a first state and a second state. In the first state, the two first ear portions 703 of the clip 7 respectively abut against the two first elastic pieces 103, and the two first elastic pieces 103 can respectively exert force on the two first ear portions 703, so that each first The ear portion 703 is operatively located in the first forceps arm 101 . The two second ear parts 704 are against the two second elastic pieces 104, and the two second elastic pieces 104 can respectively exert force on the two second ear parts 704, so that each second ear part 704 is operatively located at the second In the clamp arm 102. In the second state, each first ear portion 703 is separated from its corresponding first elastic piece 103 , and at the same time, each second ear portion 704 is separated from its corresponding second elastic piece 104 .

When the jaw assembly 1 is closed, the release mechanism in the first pliers arm 101 separates the two first ears 703 from the two first elastic pieces 103 respectively, and the release mechanism in the second pliers arm 102 makes the two second ears The parts 704 are separated from the two second elastic pieces 104 respectively, thus, after applying the clip, the two clamping arms of the clip 7 have been separated from the jaw assembly 1, so that when the jaw assembly 1 is opened, the two arms of the jaw assembly 1 The two clamp arms of the clip 7 will not be pulled by the first forceps arm, so that the clip 7 will not pull tissue or blood vessels, which reduces the risk of minimally invasive surgery.

In some optional embodiments, only one of the pliers arms is provided with a release mechanism, and the other pliers arm is not provided with a release mechanism. Here, the first pincer arm 101 has a release mechanism and the second pincer arm 102 does not have a release mechanism for description:

When the jaw assembly 1 is closed, the first element 801 in the first pliers arm 101 can abut against the end surface of the second pliers arm 102 to apply force to the first element 801 . Further, a protrusion can be provided on the end face of the second pliers arm 102, and the protrusion is set corresponding to the first element 801 in the first pliers arm 101, and is used to abut against the first element 801 when the jaw assembly 1 is closed. Apply force to it. Since the first pliers arm 101 is provided with a release mechanism, the release mechanism can apply force to the two first ear portions 703 of the clip when the jaw assembly 1 is closed, so that the two first ear portions 703 of the clip 7 are separated from the elastic piece to The first forceps arm 101 is disengaged, thereby reducing the resistance of the disengagement of the clip 7 and the jaw assembly 1 , which alleviates the tearing of the tissue or blood vessel by the clip 7 when the jaw assembly 1 is opened.

To sum up, in this embodiment, by providing a release mechanism in the jaw assembly 1, the release mechanism can push the clip 7 to move when the jaw assembly 1 is closed so that the clip 7 is separated from the jaw assembly 1, thus the jaw assembly 1 When opened, the jaw assembly 1 will not pull the clip arm of the clip 7, so the clip arm of the clip 7 will not pull the tissue or blood vessel, reducing the risk of minimally invasive surgery.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the application, and they are not intended to limit the protection scope of the application. Any equivalent implementation mode or All changes should be included within the scope of protection of this application.

Claims (15)

A clip applier, characterized in that it includes a jaw assembly and an applied part, the affected part is operatively located in the jaw assembly, the jaw assembly has a release mechanism, and the release mechanism can drive The affected member is moved to disengage the affected member from the jaw assembly. The clip applier of claim 1, wherein the release mechanism includes a release assembly having a first member and a second member connected; responsive to a force applied to the first member, The first element moves along a first direction, so that the second element moves along a second direction to drive the acted part to move, thereby disengaging the acted part from the jaw assembly. The clip applier of claim 2, wherein said motion is rotation. The clip applier of claim 2, wherein the first direction is the same as the second direction. The clip applier of claim 2, wherein the jaw assembly includes a pliers arm, and the release assembly is pivotally connected to the pliers arm. The clip applier according to claim 5, wherein the release mechanism further comprises an elastic element, and the elastic element is disposed between the first element and the pliers arm. The clip applier according to claim 2, wherein the jaw assembly includes a pliers arm, and the release assembly is movably arranged on the pliers arm; the affected part is a clip, and the clamp At least a portion is operatively located in said pliers arm; said at least a portion of said gripper is actuated by said second member to disengage said pliers arm. The clip applier of claim 2, wherein said second member has a first position and a second position, said second member being located in said first position when said jaw assembly is in an open state. position, when the jaw assembly is in a closed state, the second element is in the second position; in response to the closing of the jaw assembly, the first element is exerted with the force such that the first The two elements move from the first position to the second position along the second direction to drive the affected part to move; the release mechanism also includes a holding mechanism, when the jaw assembly is switched from the closed state to In the open state, the retention mechanism returns the second member to the first position and maintains it in the first position. The clip applier according to claim 8, wherein the jaw assembly includes a pliers arm, and the release assembly is movably arranged on the pliers arm; the holding mechanism is an elastic element, and the elastic element It is arranged between the release assembly and the pliers arm. The clip applier according to claim 1, characterized in that, the affected part is a clip, the clip includes two clip arms, the jaw assembly includes two clip arms, and at least one of the clip arms A part is operatively located in one of the pliers arms, and at least a part of the other pliers arm is operatively located in the other pliers arm; at least one of the pliers arms is provided with the release mechanism, and the release The mechanism includes a release assembly having a connected first member and a second member, the first member moves in a first direction in response to a force applied to the first member such that the second member moves along the The movement in the second direction drives the movement of the at least a portion of the clamp arm in which the release mechanism is located, thereby disengaging the clamp arm from the clamp arm. 10. The clip applier of claim 10, wherein each of said clamping arms has an ear, said at least a portion of said clamping arms including said ear. The clip applier of claim 10, wherein the first member includes a first force receiving portion that engages with the first force receiving portion in response to the closing of the jaw assembly. At least a portion of the pliers arms different from the pliers arms where the force portion is located abuts against to apply the force to the first element. The clip applier according to claim 10, wherein one of the pliers arms is provided with a first release mechanism, and the other of the pliers arms is provided with a second release mechanism. The clip applier of claim 13, wherein said first member of said first release mechanism and said first member of said second release mechanism each include a first force receiving portion; in response to When the jaw assembly is closed, the first force-receiving part of the first release mechanism abuts against the first force-receiving part of the second release mechanism, so that the two first elements respectively Apply the force. The clip applier according to claim 11, wherein the clip has a first state and a second state, at least one of the pliers arms has an elastic piece, and in the first state, the elastic piece and all the The ears in the pliers arm are against each other, so that the elastic piece can exert a force on the ears, so that the ears can be operatively located in the pliers arms. In the second state, the The ear is separated from the shrapnel.

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