Clip applier

Abstract

Disclosed is a clip applier, comprising a main body, a jaw body assembly, a jaw assembly, and a pre-pushing assembly. The pre-pushing assembly comprises a pre-pushing member, and the pre-pushing member is movably connected to the main body. The pre-pushing member has a first position and a second position, and in an axial direction of the jaw body assembly, the second position is located at a distal side of the first position. In a clip feeding state, the pre-pushing assembly can move from the first position to the second position and is retained at the second position, allowing the jaw assembly to be at least partially closed. In the process of a clip moving from a clip cartridge to the jaw assembly, the at least partially closed jaw assembly can limit an opening angle of the clip to slow down the opening speed of the clip, thereby preventing the clip from detaching from and flying out of the jaw assembly, and reducing the failure rate of the clip applier.

Description

clamping forceps

[0001] This application claims priority to Chinese Patent Application No. 202411934179.8, filed on December 25, 2024, and Chinese Patent Application No. 202511616228.8, filed on November 6, 2025, the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0002] This disclosure relates to a clamping clamp. Background Technology

[0003] During surgical procedures, it is necessary to ligate severed tissues or blood vessels to stop bleeding. A common method is to use clamps to apply clamps to the tissues or blood vessels.

[0004] A clipping forceps consists of a clip chamber and a jaw assembly, with the clips stored in the chamber. A complete clipping process typically includes a clip delivery action and a clip application action. When using a clipping forceps, the forceps performs a clip delivery action to deliver the clips stored in the clip chamber to the jaw assembly, and then the forceps performs a clip application action to drive the jaw assembly to close, causing the clips in the jaw assembly to close and clamp onto tissue or blood vessels, thereby blocking blood flow. Summary of the Invention

[0005] In view of the shortcomings of the prior art, this disclosure aims to provide a clamping clamp.

[0006] This disclosure is achieved through the following technical solution:

[0007] A clamping pliers includes a main body, a clamp body assembly, a jaw assembly, and a pre-pushing assembly;

[0008] The jaw assembly is connected to the jaw body assembly; the jaw body assembly is connected to the main body, and the jaw body assembly includes a clamping mechanism and a clamping mechanism;

[0009] The pre-push assembly includes a pre-push member movably connected to the main body, the pre-push member having a first position and a second position, the second position being located distal to the first position;

[0010] The clamping clamp has an initial state, a clamping state, and a clamping state;

[0011] In the initial state, the pre-push member is located in the first position;

[0012] In the clamping state, in response to the pre-push member being driven, the pre-push member abuts against the clamping mechanism and moves from the first position to the second position, causing the clamping mechanism to move distally and at least partially close the jaw assembly; in response to the clamping mechanism moving distally along the axial direction of the jaw assembly, the pre-push member remains in the second position, and the clamping mechanism drives the clamp into the jaw assembly;

[0013] In the clamping state, in response to the clamping mechanism being driven, the clamping mechanism moves distally along the axial direction of the jaw assembly, causing the jaw assembly to close, thereby closing the clamp in the jaw assembly.

[0014] For example, the pre-push component further includes a drive element that is movably connected to the main body;

[0015] In the clamping state, in response to the drive member being driven and moving relative to the main body, the drive member pushes against the pre-push member, causing the pre-push member to move from the first position to the second position, thereby causing the clamping mechanism to move distally.

[0016] For example, the drive element is rotatably connected to the main body;

[0017] In the clamping state, in response to the drive member being driven to rotate relative to the main body, the drive member abuts against the pre-push member and moves the pre-push member from the first position to the second position.

[0018] For example, the drive element has a stop structure;

[0019] In the initial state, the driving element is in the initial position;

[0020] In the clamping state, in response to the drive member being driven, the clamp rotates from the initial position to the stop position, the stop structure abuts the pre-push member, and in the projection along the extension direction of the rotation axis of the drive member, the line connecting at least one point on the stop structure to the rotation axis of the drive member is parallel to the axial direction of the clamp body assembly.

[0021] For example, in the clamping state, in response to the drive member being driven, it rotates from the initial position to the stop position. In the projection along the extension direction of the rotation axis of the drive member, the line connecting the stop structure of the drive member at the stop position and the contact position of the pre-push member is perpendicular to the axial direction of the clamp body assembly.

[0022] For example, the pre-push member has a first stop structure, and the drive member has a second stop structure; the pre-push member also has a third position, which is located distal to the second position;

[0023] In the initial state, the driving element is in the initial position;

[0024] In the clamping state, in response to the driving member being driven to rotate from the initial position to the stop position, the second stop structure rotates along the first rotation direction and abuts against the first stop structure, thereby causing the pre-push member to move from the first position to the third position. Then, the second stop structure continues to rotate along the first rotation direction and passes over the first stop structure. The driving member reaches the stop position, and the pre-push member moves from the third position to the second position and abuts against the driving member. The first stop structure enters the rotation path of the second stop structure, thereby preventing the second stop structure from rotating in the second rotation direction opposite to the first rotation direction.

[0025] For example, the first stop structure has a first stop surface, the second stop structure has a second stop surface, the first stop surface extends axially along the clamp body assembly or extends toward the feeding mechanism in a proximal direction, and the second stop surface is configured to extend axially along the clamp body assembly or extend toward the feeding mechanism in a proximal direction when the drive member is in the stop position.

[0026] For example, the clamping mechanism includes a second reset member and a second pusher member, the second pusher member being movably connected to the body and configured to move distally to close the jaw assembly; the second reset member is disposed between the body and the second pusher member and configured to store energy when the second pusher member moves distally; the clamping jaw includes a pushing portion;

[0027] In the clamping state, in response to the movement of the pushing part relative to the main body, the pushing part pushes the driving member, causing the driving member to rotate from the initial position to the stop position, so that the pre-pushing member pushes the clamping mechanism and moves from the first position to the second position, thereby causing the clamping mechanism to move distally, and the second reset member stores energy; in response to the continued movement of the pushing part relative to the main body, the pushing part disengages from the driving member, the driving member remains in the stop position, and the pre-pushing member remains in the second position.

[0028] For example, the pre-push component further includes a first elastic element, one end of which is connected to the main body, and the other end of which is connected to the pre-push component;

[0029] In the initial state, the first elastic element stores energy;

[0030] In the clamping state, in response to the pre-pushing member pushing against the clamping mechanism and moving from the first position to the second position, the clamping mechanism moves to the distal side, and the first elastic member releases part of the energy;

[0031] In the clamping state, in response to the clamping mechanism continuing to move distally along the axial direction of the clamp body assembly, the clamping mechanism disengages from the pre-push member, the first elastic member releases energy, causing the pre-push member to move distally from the second position, thereby disengaging the pre-push member from the stop structure, and the drive member moves from the stop position to the initial position.

[0032] For example, the clamp also has a reset state;

[0033] In the reset state, in response to the clamping mechanism and the feeding mechanism moving proximally, the clamping mechanism pushes against the pre-push member, causing the pre-push member to move to the first position. The first elastic member stores energy again, and the pushing part pushes against the driving member, causing the driving member to move from the initial position to the avoidance position. Then, the pushing part disengages from the driving member, and the driving member moves from the avoidance position back to the initial position.

[0034] For example, the pre-push component further includes a second elastic element, one end of which is connected to the main body and the other end of which is connected to the drive element;

[0035] In the clamping state, in response to the pushing part pushing the driving member, causing the driving member to move from the initial position to the stop position, the second elastic member stores energy;

[0036] In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the first elastic element releases energy, causing the pre-push member to move distally from the second position, thereby disengaging the pre-push member from the stop structure. The second elastic element releases energy, causing the drive member to move from the stop position to the initial position.

[0037] For example, the pre-push member is spaced apart from the clamping mechanism.

[0038] For example, the pre-push member has a first pushing structure, and the clamping mechanism has a second pushing structure;

[0039] In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the second pushing structure pushes against the first pushing structure, so that the clamping mechanism drives the pre-pushing member to move from the first position to the second position.

[0040] For example, in a direction from near to far, at least one of the first pushing structure and the second pushing structure extends obliquely toward the feeding mechanism, and the second position is farther away from the feeding mechanism than the first position.

[0041] For example, the pre-push member also has a first holding structure connected to the distal side of the first push structure, and the clamping mechanism also has a second holding structure connected to the proximal side of the second push structure;

[0042] In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the jaw assembly, the second pushing structure abuts against the first pushing structure and slides relative to the first pushing structure until the second pushing structure disengages from the first pushing structure, so that the clamping mechanism drives the pre-pushing member to move from the first position to the second position, causing the clamping mechanism to move distally and at least partially close the jaw assembly, and the clamping mechanism drives the clamp distally to the proximal side of the jaw assembly; in response to the clamping mechanism continuing to move distally along the axial direction of the jaw assembly, the second retaining structure abuts against the first retaining structure and slides relative to the first retaining structure, so that the pre-pushing member is held in the second position, and the clamping mechanism drives the clamp to continue moving distally to enter the jaw assembly.

[0043] For example, one of the pre-push member and the main body has a guide groove, which extends obliquely away from the clamping mechanism in a direction from near to far, and the guide groove has a first stop and a second stop; the pre-push member and the other of the main body are connected by a guide portion, which is accommodated in the guide groove;

[0044] In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the pre-push member moves from the first stop of the guide portion in the guide groove to the second stop of the guide portion in the guide groove, so that the pre-push member moves from the first position to the second position.

[0045] For example, the clamping clamp also includes a clamping drive structure;

[0046] In the clamping state, the clamping drive structure drives the clamping mechanism to move distally along the axial direction of the clamp body assembly.

[0047] For example, the clamping clamp also includes a clamping drive structure;

[0048] In the clamping state, in response to the clamping drive structure driving the clamping mechanism to move distally along the axial direction of the clamp body assembly, the clamping mechanism drives the pre-push member to move from the first position to the second position; or, in the clamping state, the clamping drive structure drives the clamping mechanism to move distally along the axial direction of the clamp body assembly, and the clamping drive structure drives the pre-push member to move from the first position to the second position. Attached Figure Description

[0049] Figure 1 is a perspective view of the clamping forceps provided in some embodiments of this disclosure;

[0050] Figure 2 is a schematic diagram of a portion of the clamp shown in Figure 1, in which the clamp is in its initial state;

[0051] Figure 3 is a partial schematic diagram of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive component, and the clamp has not yet reached the jaw assembly.

[0052] Figure 4 is a schematic diagram of a portion of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the clamps have reached the jaw assembly;

[0053] Figure 5 is a partial schematic diagram of the clamping pliers shown in Figure 1, in which the clamping pliers are in the clamping state and the jaw assembly is not yet fully closed;

[0054] Figure 6 is a schematic diagram of a portion of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the jaw assembly is completely closed;

[0055] Figure 7 is a schematic diagram of a portion of the clamp shown in Figure 1, wherein the clamp is in the reset state;

[0056] Figure 8 is a three-dimensional schematic diagram of a portion of the clamp shown in Figure 1, wherein the clamp is in its initial state;

[0057] Figure 9 is a three-dimensional schematic diagram of a portion of the clamping pliers shown in Figure 1. In the clamping pliers, the clamping mechanism has disengaged from the drive unit, and the clamp has not yet reached the jaw assembly.

[0058] Figure 10 is a cross-sectional view of a portion of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive unit, and the clamp has not yet reached the jaw assembly.

[0059] Figure 11 is a cross-sectional view of the clamp body assembly and jaw assembly of the clamp shown in Figure 1, wherein the clamp is in the initial state;

[0060] Figure 12 is a cross-sectional view of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1. The clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive unit, and the clamp has not yet reached the jaw assembly.

[0061] Figure 13 is a cross-sectional view of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the clamps have reached the jaw assembly.

[0062] Figure 14 is a cross-sectional view of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the jaw assembly is completely closed;

[0063] Figure 15 is a cross-sectional view of a portion of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1, wherein the clamping pliers are in their initial state;

[0064] Figure 16 is a cross-sectional view of a portion of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1. In the figure, the clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive unit, and the clamp has not yet reached the jaw assembly.

[0065] Figure 17 is a cross-sectional view of a portion of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the clamps have reached the jaw assembly;

[0066] Figure 18 is a cross-sectional view of a portion of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1, wherein the clamping pliers are in the clamping state and the jaw assembly is completely closed;

[0067] Figure 19 is a three-dimensional schematic diagram of the drive component of the pre-push assembly of the clamping pliers shown in Figure 1;

[0068] Figure 20 is a three-dimensional schematic diagram of the first pusher of the clamping mechanism shown in Figure 1;

[0069] Figure 21 is a schematic diagram of a portion of the clamp provided in some other embodiments of this disclosure, wherein the clamp is in an initial state;

[0070] Figure 22 is a partial schematic diagram of the clamping pliers shown in Figure 21, wherein the clamping pliers are in the clamping state and the clamps have not yet reached the jaw assembly;

[0071] Figure 23 is a partial schematic diagram of the clamping pliers shown in Figure 21, wherein the clamping pliers are in the clamping state and the clamps have reached the jaw assembly;

[0072] Figure 24 is a partial schematic diagram of the clamping pliers shown in Figure 21, in which the clamping pliers are in the clamping state and the jaw assembly is completely closed;

[0073] Figure 25 is a three-dimensional schematic diagram of the first sleeve of the clamping mechanism of the clamping pliers shown in Figure 1;

[0074] Figure 26 is a three-dimensional schematic diagram of the jaw assembly of the clamping pliers shown in Figure 1.

[0075] Figure 27 is a three-dimensional schematic diagram of the closing elastic element of the jaw assembly of the clamping pliers shown in Figure 1;

[0076] Figure 28-A is a schematic diagram of the cooperation of the clamping drive structure, clamping mechanism, clamping mechanism and pre-push component of the clamping pliers provided in some other embodiments of this disclosure, wherein the clamping pliers are in the initial state;

[0077] Figure 28-B is a schematic diagram of the clamping drive structure, clamping mechanism, clamping mechanism and pre-push assembly of the clamping pliers shown in Figure 28-A. In this diagram, the clamping pliers are in the clamping state and the clamps have not yet reached the jaw assembly.

[0078] Figure 28-C is a schematic diagram of the clamping drive structure, clamping mechanism, clamping mechanism and pre-push assembly of the clamping pliers shown in Figure 28-A. In the figure, the clamping pliers are in the clamping state and the clamps have reached the jaw assembly.

[0079] Figure 29 is a three-dimensional schematic diagram of the clamping chamber installed in the clamping pliers shown in Figure 1;

[0080] Figure 30 is a three-dimensional schematic diagram of the clamping compartment shown in Figure 29 from another angle;

[0081] Figure 31 is a schematic diagram of the clamp stacking in the clamping compartment shown in Figure 29;

[0082] Figure 32 is a top view of the clamp and clip shown in Figure 31;

[0083] Figure 33 is a partial cross-sectional view of the clamp body assembly and jaw assembly of the clamp shown in Figure 1 from another direction, wherein the clamp is in the initial state;

[0084] Figure 34 is a partial cross-sectional view of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1 from another direction, wherein the clamping pliers are in the clamping state and the clamping mechanism begins to move to the distal side.

[0085] Figure 35 is a partial cross-sectional view of the clamp body assembly and jaw assembly of the clamping pliers shown in Figure 1 from another direction, wherein the clamping pliers are in the clamping state and the clamping mechanism moves to the extreme position to the far side.

[0086] Figure 36 is a partial cross-sectional view of the clamp body assembly and jaw assembly of the clamp shown in Figure 1 from another direction, wherein the clamp is in the reset state;

[0087] Figure 37 is a perspective view of a portion of the clamping pliers provided in some other embodiments of the present disclosure, wherein the clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive member, and the clamp has not yet reached the jaw assembly.

[0088] Figure 38 is a cross-sectional view of a portion of the clamping pliers shown in Figure 37, wherein the clamping pliers are in the clamping state, the clamping mechanism has disengaged from the drive unit, and the clamp has not yet reached the jaw assembly.

[0089] Figure 39 is a three-dimensional schematic diagram of the driving component of the clamp shown in Figure 37;

[0090] Figure 40 is a three-dimensional schematic diagram of the pre-push component of the clamping clamp shown in Figure 37;

[0091] Figures 41-A to 41-C are schematic diagrams of the operation of the driving component and the pre-pushing component of the clamp shown in Figure 37;

[0092] Figure 42 is a cross-sectional view of a portion of the clamping pliers provided in some other embodiments of the present disclosure, wherein the clamping pliers are in a clamping state, the clamping mechanism has disengaged from the drive member, and the clamp has not yet reached the jaw assembly.

[0093] Reference numerals in the above figures: 100-Main body, 110-Guide part, 120-Clamping member, 130-Guide shaft, 140-Fixing structure; 200-Clamp body assembly, 210-Clamping chamber, 211-Clamp, 211a-First clamp, 212-Clamping channel, 212a-Inlet, 212b-Outlet, 213-Biasing member, 214-Support member, 220-Clamping mechanism, 221-First pusher, 221a-Mating part, 221b-Second ratchet, 221c-First drive part, 221d-Second abutment structure, 221e-Second sliding surface, 221f-Second abutment surface, 221g-Pushing part, 221h-Second pusher Structure, 221i-Second holding structure, 222-Feeding clamp, 222a-First pushing part, 222b-Second pushing part, 222c-Feeding clamp, 223-First resetting member, 230-Clamping mechanism, 231-Second pushing member, 231a-Second driving part, 231b-Fourth abutting structure, 232-Clamping member, 232a-Second sleeve, 232b-First sleeve, 232c-Pivoting part, 232d-First limiting part, 232e-First abutting part, 233-Second resetting member; 300-jaw assembly, 310-jaw arm, 311-second limiting part, 311a-second abutting part, 312-body, 313-limiting protrusion, 314-stop, 315-mounting hole, 320-closing elastic element, 321-first connecting structure, 322-second connecting structure, 323-first abutting section, 324-connecting section, 325-second abutting section; 400-operating component, 410-clamping drive structure, 420-clamping drive structure; 600 - Pre-push assembly, 610 - Pre-push member, 611 - First push structure, 612 - Guide groove, 613 - Mounting protrusion, 614 - First retaining structure, 615 - First stop structure, 615a - First stop surface, 620 - Drive member, 621 - Stop surface, 622 - Second stop structure, 622a - Second stop surface, 630 - First elastic member, 640 - Second elastic member. Detailed Implementation

[0094] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0095] It is important to understand that the terms "proximal," "posterior," "distal," and "anterior" used in this article are relative to the clinician manipulating the handle assembly of the clamp. "Proximal" and "posterior" refer to the portion closer to the clinician, while "distal" and "anterior" refer to the portion farther from the clinician. That is, the manipulator is the proximal end, and the end effector is the distal end. For example, the proximal end of a component refers to the end relatively closer to the manipulator, while the distal end refers to the end relatively closer to the end effector.

[0096] In this disclosure, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, such as contact. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. It should be noted that when "connected" or "linked" is preceded by a qualifier, it has the meaning defined by that qualifier, excluding only obviously excluding cases, but not other possible cases. For example, "detachable connection" refers to a detachable connection, excluding an integral part, but movable connections are not excluded.

[0097] The term "axial" refers to the length direction of the guide shaft 130.

[0098] The clamping forceps are used to apply clamps 211 to blood vessels or tissues. The clamps 211 are stored in a clamping chamber 210, where they are in a semi-closed state, between an open and closed state. During operation, the clamping forceps first perform a clamping action, delivering the clamps 211 from the clamping chamber 210 to the jaw assembly 300, switching the clamps 211 from the semi-closed state to the open state. Then, the clamping action is performed to close the jaw assembly 300, switching the clamps 211 from the open state to the closed state.

[0099] During the process of switching from a semi-closed state to an open state, the clamp 211 opens and releases energy under its own elasticity. If the opening speed is too fast, the clamp 211 will fall off from the jaw assembly 300 and fly out, thus causing the clamp to malfunction.

[0100] Based on this, referring to Figures 1 to 18, this embodiment of the present disclosure provides a clamping pliers, including a main body 100, a clamp body assembly 200, a jaw assembly 300, and a pre-push assembly 600; the jaw assembly 300 is connected to the clamp body assembly 200; the clamp body assembly 200 is connected to the main body 100, and the clamp body assembly 200 includes a clamping mechanism 220 and a clamping mechanism 230. For example, a clamping chamber 210 is installed on the clamp body assembly 200, and a clamp 211 is stored in the clamping chamber 210; the pre-push assembly 600 includes a pre-push member 610, which is movably connected to the main body 100. The pre-push member 610 has a first position and a second position, with the second position located distal to the first position.

[0101] The clamping pliers have an initial state, a clamping state, and a clamping state. A single operation of the clamping pliers includes at least the following actions:

[0102] Referring to Figures 2, 11 and 15, in the initial state, the pre-push member 610 is located in the first position;

[0103] Referring to Figures 2 to 4, 11 to 13, and 15 to 17, in the clamping state, in response to the pre-push member 610 being driven, the pre-push member 610 pushes against the clamping mechanism 230 and moves from the first position to the second position, causing the clamping mechanism 230 to move distally and at least partially close the jaw assembly 300; in response to the clamping mechanism 220 moving distally along the axial direction of the jaw assembly 200, the pre-push member 610 remains in the second position, and the clamping mechanism 220 drives the clamp 211 in the clamping chamber 210 into the jaw assembly 300;

[0104] Referring to Figures 4 to 6, 13 to 14, and 17 to 18, in the clamping state, in response to the clamping mechanism 230 being driven, the clamping mechanism 230 moves distally along the axial direction of the clamp body assembly 200, causing the jaw assembly 300 to close, thereby causing the clamp 211 in the jaw assembly 300 to close.

[0105] The clamp provided in this embodiment is provided with a pre-push component 600. In the clamping state, the pre-push component 600 can move from a first position to a second position and remain in the second position, so that the jaw assembly 300 is at least partially closed. During the process of the clamp 211 moving from the clamping chamber 210 into the jaw assembly 300, the at least partially closed jaw assembly 300 can limit the opening angle of the clamp 211, so as to slow down the opening speed of the clamp 211, thereby preventing the clamp 211 from falling out of the jaw assembly 300 and reducing the failure rate of the clamp.

[0106] It should be noted that, by way of example, referring to Figures 1, 11 to 14, and 29 to 36, the clamping chamber 210 can be detachably connected to the clamping body assembly 200, and the clamping chamber 210 and the clamping pliers can be independent of each other; alternatively, the clamping chamber 210 can be fixed in the clamping body assembly 200 as part of the clamping pliers. The specific form of the clamping chamber 210 does not affect the operation of the pre-pushing component 600 in the embodiments of this disclosure. The following description uses the example of the clamping chamber 210 being detachably connected to the clamping body assembly 200 to illustrate how the function of the pre-pushing component 600 in this disclosure is realized in a specific application scenario, and should not be construed as a limitation on the concept of this disclosure.

[0107] The sequence of actions of the pre-push member 610 and the clamping mechanism 220 in the clamping state can be set according to actual needs, as long as the clamp 211 is restricted by the clamping assembly 300 during the process of entering the jaw assembly 300. For example, it can be set that the pre-push member 610 moves from the first position to the second position and then stays in the second position when the clamping mechanism 220 moves to the far side along the axis of the jaw assembly 200; or it can be set that the pre-push member 610 moves from the first position to the second position first, and then the clamping mechanism 220 moves to the far side along the axis of the jaw assembly 200.

[0108] There are various ways to drive the pre-push member 610 from the first position to the second position. For example, referring to Figures 2 to 10, the pre-push assembly 600 also includes a drive member 620, which is movably connected to the main body 100. Referring to Figures 2 to 4 and Figures 8 to 9, in the clamping state, in response to the drive member 620 being driven and moving relative to the main body 100, the drive member 620 pushes the pre-push member 610, causing the pre-push member 610 to move from the first position to the second position, thereby causing the clamping mechanism 230 to move distally.

[0109] For example, referring to Figures 2 to 10, the drive member 620 is rotatably connected to the main body 100. Referring to Figures 2 to 4 and Figures 8 to 9, in the clamping state, in response to the drive member 620 being driven to rotate relative to the main body 100, the drive member 620 abuts against the pre-push member 610 and moves the pre-push member 610 from a first position to a second position.

[0110] In some embodiments, referring to FIG19, the drive member 620 has a stop structure 621. Referring to FIGS. 2 and 8, in the initial state, the drive member 620 is in the initial position; referring to FIGS. 2 to 4 and FIGS. 8 to 10, in the clamping state, in response to the drive member 620 being driven to rotate distally from the initial position to the stop position, the stop structure 621 abuts against the pre-push member 610. Referring to FIG10, in the projection along the extension direction of the rotation axis of the drive member 620, the line connecting at least one point on the stop structure 621 to the rotation axis of the drive member 620 (i.e., the dashed line shown in FIG10) is parallel to the axial direction of the clamp body assembly 200. At this time, the drive member 620 can be held in the stop position without external force, so that the pre-push member 610 is held in the second position.

[0111] It should be noted that in actual products, considering manufacturing and installation tolerances, when the drive member 620 is in the stop position, in the projection along the extension direction of the rotation axis of the drive member 620, the line connecting at least one point on the stop structure 621 to the rotation axis of the drive member 620 may be approximately parallel to the axial direction of the clamp body assembly 200, which is sufficient to keep the pre-push member 610 in the second position.

[0112] For example, referring to FIG10, in the clamping state, in response to the drive member 620 being driven to rotate from the initial position to the stop position, in the projection along the extension direction of the rotation axis of the drive member 620, the line connecting the contact position of the stop structure 621 of the drive member 620 at the stop position and the pre-push member 610 is perpendicular to the axial direction of the clamp body assembly 200, so that the drive member 620 can be held more stably in the stop position.

[0113] It is understandable that the stop structure 621 can have various specific structural forms. The stop structure 621 can be set as a plane as shown in Figure 19; it can also be set as an edge; it can also be set as a combination of multiple protrusions; or it can be set as other forms, which can be set according to actual needs.

[0114] In other embodiments, referring to Figures 37 to 41-C, the pre-push member 610 has a first stop structure 615, and the drive member 620 has a second stop structure 622; the pre-push member 620 also has a third position, which is located distal to the second position. When the drive member 620 rotates, the rotation path of the second stop structure 622 is shown in Figures 41-A to 41-C by two concentric circles with dotted lines. Its path is roughly the area between the two concentric circles with dotted lines. It should be noted that this is illustrated as a whole circle, but in actual use, the movement path of the second stop structure 622 is only a part of the whole circle.

[0115] Referring to Figure 41-A, in the initial state, the drive member 620 is in the initial position; in the clamping state, in response to the drive member 620 being driven, it rotates from the initial position to the stop position. Referring to Figure 41-B, the second stop structure 622 rotates along the first rotation direction and pushes against the first stop structure 615, thereby causing the pre-push member 610 to move from the first position to the third position. Then, referring to Figure 41-C, the second stop structure 622 continues to rotate along the first rotation direction and passes over the first stop structure 615. The pre-push member 610 moves from the third position to the second position and abuts against the drive member 620. The first stop structure 615 enters the rotation path of the second stop structure 622, thereby preventing the second stop structure 622 from rotating in the second rotation direction opposite to the first rotation direction.

[0116] The arrangement of the first stop structure 615 and the second stop structure 622 enables the drive member 620 to be limited by the pre-push member 610 after reaching the stop position, thereby keeping the drive member 620 stably in the stop position.

[0117] For example, referring to Figures 39 and 40, the first stop structure 615 has a first stop surface 615a, and the second stop structure 622 has a second stop surface 622a. In some embodiments, referring to Figures 37 and 38, the first stop surface 615a extends axially along the clamp body assembly 200, and the second stop surface 622a is configured to extend axially along the clamp body assembly 200 when the drive member 620 is in the stop position. Thus, when the drive member 620 is in the stop position, a stable abutment can be formed between the first stop surface 615a and the second stop surface 622a to improve the reliability of the drive member 620 maintaining the stop position. In other embodiments, referring to Figure 42, the first stop surface 615a extends towards the clamping mechanism 220 in a near-to-far direction, and the second stop surface 622a is configured to extend towards the clamping mechanism 220 in a near-to-far direction when the drive member 620 is in the stop position. The clamping mechanism 220 extends in the direction of the feed mechanism, thereby forming a barb shape for both the first stop structure 615 and the second stop structure 622. When the drive member 620 is in the stop position, the first stop structure 615 and the second stop structure 622 form an interlocking fit, thus ensuring high reliability of the drive member 620 in the stop position. In some other embodiments, the first stop surface 615a may also be set to extend along the axial direction of the clamping body assembly 200, and the second stop surface 622a may be configured to extend towards the feed mechanism 220 in a near-to-far direction when the drive member 620 is in the stop position. Alternatively, the first stop surface 615a may be set to extend towards the feed mechanism 220 in a near-to-far direction, and the second stop surface 622a may be configured to extend along the axial direction of the clamping body assembly 200 when the drive member 620 is in the stop position. The configuration can be adjusted according to actual needs.

[0118] Referring to Figures 2 to 14, the clamping mechanism 230 includes a second reset member 233 and a second pusher member 231. The second pusher member 231 is movably connected to the main body 100 and is configured to move distally to close the jaw assembly 300. For example, referring to Figures 11 to 14, the clamping mechanism 230 also includes a clamping member 232, which is connected to the second pusher member 231. When the second pusher member 231 moves distally, it can drive the clamping member 232 to move distally, thereby closing the jaw assembly 300. The second reset member 233 is disposed between the main body 100 and the second pusher member 231 and is configured to store energy when the second pusher member 231 moves distally.

[0119] The clamping clamp includes a pushing part 221g, which is disposed on a component for driving the pre-push member 610 to move.

[0120] In some embodiments, referring to Figures 2 to 9, the pre-push member 610 can be driven by the clamping mechanism 220 to move from a first position to a second position. Referring to Figure 20, the pushing part 221g is disposed on the clamping mechanism 220. In the clamping state, referring to Figures 2 and 3, in response to the clamping mechanism 220 moving distally along the axial direction of the clamp body assembly 200, the clamping mechanism 220 pushes the drive member 620, causing the drive member 620 to rotate distally from its initial position to a stop position, so that the pre-push member 610 moves from a first position to a second position, thereby causing the pre-push member 610 to drive the clamping mechanism 230 to move distally. The second reset member 233 stores energy. At this time, the distal side of the pre-push member 610 abuts against the second push member 231. The second push member 231 transmits the spring force generated by the second reset member 233 toward the proximal side to the pre-push member 610. The proximal side of the pre-push member 610 abuts against the stop structure 621. The drive member 620 applies a force distally to the pre-push member 610. The pre-push member 610 and the drive member 231 move distally. 20. All three components of the clamping mechanism 230 are in force balance. Therefore, referring to Figures 3 and 4, in response to the clamping mechanism 220 continuing to move distally along the axial direction of the clamp body assembly 200, the clamping mechanism 220 disengages from the drive member 620 and continues to push the clamp 211 into the jaw assembly 300. The drive member 620 remains in the stop position, the pre-push member 610 remains in the second position, and the clamping mechanism 230 remains in the position after being pushed by the pre-push member 610. The stable position of the clamping mechanism 230 can prevent the clamping mechanism 230 from accidentally moving and causing the jaw assembly 300 to open during the movement of the clamp 211 towards the jaw assembly 300. Therefore, the reliability of the clamping mechanism 300's constraint on the clamp 211 during the movement of the clamp 211 towards the jaw assembly 300 can be guaranteed.

[0121] In other embodiments, the component that drives the clamping mechanism 220 may also simultaneously drive the pre-push member 610 to move from the first position to the second position. For example, the clamping mechanism 220 is driven by a clamping drive structure 410, which is movably connected to the main body 100. Referring to Figures 28-A to 28-C, the pushing part 221g is connected to the clamping drive structure 410. In the clamping state, referring to Figures 28-A to 28-B, the clamping drive structure 410 moves relative to the main body 100 and drives the clamping mechanism 220 to move distally. The pushing part 221g moves with the clamping drive structure 410 and pushes against the drive member 620, causing the drive member 620 to move from the initial position to the stop position relative to the main body 100. The drive member 620 pushes against the pre-push member 610, causing the pre-push member 610 to move from the first position to the second position, thereby causing the clamping mechanism 230 to move distally. Referring to Figures 28-B to 28-C, the clamping drive structure 410 continues to move relative to the main body 100 and drives the clamping mechanism 220 to continue moving distally. The pushing part 221g continues to move with the clamping drive structure 410 and disengages from the drive member 620. The drive member 620 remains in the stop position so that the pre-push member 610 remains in the second position.

[0122] In a clamping pliers capable of continuous clamping, after the clamping and clamping states are completed, a reset state is required to reset all components in the clamping pliers to their initial state. Based on this, referring to Figures 2 to 7, the pre-push assembly 600 also includes a first elastic member 630. One end of the first elastic member 630 is connected to the main body 100, and the other end of the first elastic member 630 is connected to the pre-push member 610. For example, the pre-push member 610 is provided with a mounting protrusion 613, and the other end of the first elastic member 630 is connected to the mounting protrusion 613.

[0123] Referring to Figure 2, in the initial state, the first elastic member 630 stores energy. For example, the first elastic member 630 may be in a stretched state or a compressed state in the initial state. At this time, the pre-push member 610 is simultaneously subjected to a force applied by the second reset member 233 toward the proximal side and a force applied by the first elastic member 630 toward the distal side. The two forces make the pre-push member 610 subject to force balance.

[0124] Referring to Figures 2 to 4, in the clamping state, in response to the pre-push member 610 pushing against the clamping mechanism 230 and moving from the first position to the second position, the clamping mechanism 230 moves to the distal side, and the first elastic member 630 releases some energy. Compared with the initial state, the force exerted by the first elastic member 630 on the pre-push member 610 towards the distal side is smaller. The pre-push member 610 is simultaneously subjected to the force exerted by the first elastic member 630 towards the distal side, the force exerted by the drive member 620 towards the distal side, and the force exerted by the second reset member 233 towards the proximal side. The above three forces make the pre-push member 610 subject to force balance, so that the pre-push member 610 can be maintained in the second position.

[0125] Referring to Figures 4 to 6, in the clamping state, in response to the clamping mechanism 230 continuing to move distally along the axial direction of the clamp body assembly 200, the clamping mechanism 230 disengages from the pre-push member 610, breaking the force balance state of the pre-push member 610 in the clamping state. At this time, the first elastic member 630 releases energy, causing the pre-push member 610 to move distally from the second position, thereby causing the pre-push member 610 to disengage from the stop structure 621. The drive member 620 loses its constraint and moves from the stop position to the initial position, thereby making room for the reset of the pre-push member 610 and preparing for the reset state of the clamping clamp.

[0126] Referring to Figures 6, 7, and 2, in the reset state, in response to the clamping mechanism 230 and the feeding mechanism 220 moving proximally, the clamping mechanism 230 pushes the pre-push member 610, causing the pre-push member 610 to move to the first position. The first elastic member 630 stores energy again, and the pushing part 221g pushes the driving member 620, causing the driving member 620 to move from the initial position to the avoidance position. Then, the pushing part 221g disengages from the driving member 620, and the driving member 620 moves from the avoidance position back to the initial position.

[0127] The first elastic element 630 is set so that the pre-push element 610 can maintain the position of the clamping mechanism 230 in the clamping state and can also be reset smoothly in the reset state, thus ensuring that the clamping clamp can smoothly complete the cyclic execution action sequence.

[0128] Referring to Figures 2 to 7, the pre-pushing assembly 600 also includes a second elastic member 640. One end of the second elastic member 640 is connected to the main body 100, and the other end of the second elastic member 640 is connected to the driving member 620. For example, the second elastic member 640 may be a torsion spring.

[0129] Referring to Figures 2 to 4, in the clamping state, in response to the pushing part 221g pushing drive 620, the drive 620 moves from the initial position to the stop position, and the second elastic member 640 stores energy.

[0130] Referring to Figures 4 to 6, in the clamping state, in response to the clamping mechanism 230 moving distally along the axial direction of the clamping body assembly 200, the first elastic member 630 releases energy, causing the pre-push member 610 to move distally from the second position, thereby disengaging the pre-push member 610 from the stop structure 621a. The second elastic member 640 releases energy, causing the drive member 620 to move from the stop position to the initial position.

[0131] Referring to Figures 6, 7, and 2, in the reset state, in response to the clamping mechanism 230 and the feeding mechanism 220 moving towards the proximal side, the pushing part 221g pushes the driving member 620, causing the driving member 620 to move from the initial position to the avoidance position. The second elastic member 640 stores energy, and then the pushing part 221g disengages from the driving member 620, and the second elastic member 640 releases energy, causing the driving member 620 to move from the avoidance position to the initial position.

[0132] Referring to Figures 2 to 7, the pre-push member 610 and the clamping mechanism 220 are spaced apart, meaning that the clamping mechanism 220 never contacts the pre-push member 610 during its operation. Therefore, the operation of the pre-push member 610 will not affect the operation of the clamping mechanism 220. The pre-push member 610 will neither increase the operating resistance of the clamping mechanism 220 in the clamping state nor hinder the clamping mechanism 220 from resetting in the reset state, thus providing good ease of use for the clamping clamp.

[0133] Referring to Figures 2 to 9, the pre-push member 610 has a guide groove 612, and the main body 100 is connected to a guide portion 110. The guide portion 110 is accommodated in the guide groove 612, and the extending direction of the guide groove 612 is parallel to the axial direction of the clamp assembly 200. When the pre-push member 610 moves relative to the main body 100, the guide groove 612 moves relative to the guide portion 110. The cooperation between the two can guide the movement of the pre-push member 610, thereby improving the stability of the movement of the pre-push member 610.

[0134] It is understandable that the pre-push member 610 can also be connected to the guide part 110, and the main body 110 has a guide groove 612, which can also play the role of guiding the movement of the pre-push member 610.

[0135] For example, taking the pre-push member 610 having a guide groove 612 and the main body 100 having a guide part 110 as an example, referring to Figures 2 to 9, there are two guide grooves 612 and two guide parts 110. The two guide parts 110 are accommodated in the two guide grooves 612 in a one-to-one correspondence. Two limiting positions are formed on the pre-push member 610, thereby preventing the pre-push member 610 from twisting relative to the main body 100, so as to avoid the clamp failure caused by this.

[0136] It is understood that the number of guide grooves 612 and guide parts 110 can be set to more than two, which can be set according to actual needs; two or more guide grooves 612 can be set to be separate from each other or connected to each other.

[0137] For example, taking a pre-push member 610 having a guide portion 110 and a main body 100 having a guide groove 612 as an example, both the guide groove 612 and the guide portion 110 are provided. The opposite sides of the guide portion 110 abut against the inner wall of the guide groove 612, and at least one side of the guide portion 110 forms surface contact with the inner wall of the guide groove 612, thereby preventing the pre-push member 610 from twisting relative to the main body 100, and thus avoiding clamp failure. Similarly, the above arrangement can also be applied to embodiments where the pre-push member 610 has a guide groove 612 and the main body 100 has a guide portion 110.

[0138] In other embodiments, referring to Figures 21 to 24, the pre-push member 610 has a first push structure 611, and the clamping mechanism 220 has a second push structure 221h. Referring to Figures 21 to 22, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the clamping body assembly 200, the second push structure 221h pushes against the first push structure 611, so that the clamping mechanism 220 drives the pre-push member 610 to move from a first position to a second position. That is, the clamping mechanism 220 directly drives the pre-push member 610 to move.

[0139] Referring to Figures 21 to 24, in the direction from near to far, the first pushing structure 611 extends obliquely toward the clamping mechanism 220, and the second position is farther away from the clamping mechanism 220 than the first position. Referring to Figures 21 and 22, in the clamping state, the clamping mechanism 220 moves to the far side, causing the second pushing structure 221h to abut against and slide relative to the first pushing structure 611. The obliquely arranged first pushing structure 611 causes the force direction of the pre-pushing member 610 to tilt away from the clamping mechanism 220 in the direction from near to far, forming a component force along the axial direction of the clamping body assembly 200 and a component force along the direction perpendicular to the axial direction of the clamping body assembly 200, thereby causing the pre-pushing member 610 to move to the far side and away from the clamping mechanism 220. When the second pushing structure 221h disengages from the first pushing structure 611, the clamping mechanism 220 will not drive the pre-pushing member 610 to continue moving when it continues to move. The above settings can accommodate the different stroke lengths of the clamping mechanism 220 and the clamping mechanism 230 in the clamping state.

[0140] It is understood that the second pushing structure 221h can also be set to extend at an angle towards the clamping mechanism 220 in a direction from near to far, or the first pushing structure 611 and the second pushing structure 221h can be set to extend at an angle towards the clamping mechanism 220 in a direction from near to far, both of which can achieve the same effect as the above embodiment.

[0141] Referring to Figures 21 to 24, the pre-push member 610 further has a first holding structure 614, which is connected to the distal side of the first push structure 611. The clamping mechanism 220 further has a second holding structure 221i, which is connected to the proximal side of the second push structure 221h. Referring to Figures 21 to 22, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the clamp assembly 200, the second push structure 221h pushes against the first push structure 611 and slides relative to the first push structure 611 until the second push structure 221h disengages from the first push structure 611, so that the clamping mechanism 220 drives the pre-push member 610 to move from the first position to the second position, causing the clamping mechanism 230 to move distally and at least partially close the jaw assembly 300. The clamp 211 is driven to move from the clamping chamber 210 toward the jaw assembly 300. Referring to Figures 22 and 23, in response to the clamp feeding mechanism 220 continuing to move distally along the axial direction of the jaw assembly 200, the second holding structure 221i of the clamp feeding mechanism 220 abuts against the first holding structure 614 of the pre-push member 610 and slides relative to the first holding structure 614, so that the pre-push member 610 is held in the second position, and the clamp feeding mechanism 220 drives the clamp 211 to continue to move distally to enter the jaw assembly 300.

[0142] The above configuration ensures that the clamp 211 is always restricted by the jaw assembly 300 from the moment it enters the jaw assembly 300 until it moves into place within the jaw assembly 300, thus guaranteeing the reliability of preventing the clamp 211 from falling out of the jaw assembly 300.

[0143] Referring to Figures 21 to 24, both the first retaining structure 614 and the second retaining structure 221i extend along the axial direction of the clamp assembly 200. During the process of the second retaining structure 221i abutting against the first retaining structure 614 and sliding relative to the first retaining structure 614, the two maintain a certain length of contact in the axial direction of the clamp assembly 200, which enables the pre-push member 610 to be stably held in the second position.

[0144] It is understood that only one of the first retaining structure 614 and the second retaining structure 221i may be provided to extend along the axial direction of the clamp body assembly 200. Referring to Figures 21 to 24, the pre-push member 610 has at least two guide grooves 612, which extend obliquely away from the clamping mechanism 220 in a proximal-to-far direction. The guide groove 612 has a first stop and a second stop, with the first stop located far from the second stop and further away from the clamping mechanism 220 than the second stop. For example, the first stop is the far end of the guide groove 612, and the second stop is the proximal end of the guide groove 612. The body 100 is connected to at least two guide portions 110, and each guide groove 612 accommodates a guide portion 110.

[0145] Referring to Figures 21 and 12, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the clamping body assembly 200, the pre-push member 610 moves from the first stop position of the guide portion 110 in the guide groove 612 to the second stop position of the guide portion 110 in the guide groove 612, thereby moving the pre-push member 610 from the first position to the second position. The cooperation between the guide groove 612 and the guide portion 110 can guide the movement of the pre-push member 610, thereby improving the stability of the movement of the pre-push member 610.

[0146] It is understandable that the pre-push member 610 may also be connected to at least two guide parts 110, and the main body 100 may have at least two guide grooves 612, wherein the first stop is located near the second stop, and the first stop is closer to the clamping mechanism 220 than the second stop, which can also play the role of guiding the movement of the pre-push member 610.

[0147] The following description, in conjunction with Figures 11 to 18, illustrates how the clamping clamp, according to some embodiments of this disclosure, drives the clamping mechanism 230 to move distally in the clamping state. It should be noted that the following content is merely illustrative and not intended to limit the scope of this disclosure.

[0148] Referring to Figures 11 to 18 and 27, the main body 100 is connected to a fixed structure 140; the jaw assembly 300 includes two jaw arms 310 and a closing elastic member 320. The jaw arms 310 are rotatably connected to the fixed structure 140, and the closing elastic member 320 is connected to the two jaw arms 310. The closing elastic member 320 is configured to provide a force for the two jaw arms 310 to move closer to each other. The jaw assembly 300 has an open state and a closed state; the jaw body assembly 200 is connected to the main body 100. The jaw body assembly 200 includes a clamping mechanism 220 and a clamping mechanism 230. The jaw body assembly 200 is configured to install a clamping chamber 210 for accommodating a clamp 211. The clamp 211 has an open state, a semi-closed state, and a closed state. The clamping mechanism 230 includes a first sleeve 232b, which is sleeved on the fixed structure 140.

[0149] The clamping pliers have an initial state, a clamping state, and a clamping state. One working process of the clamping pliers includes at least the following actions:

[0150] Referring to Figures 11 and 15, in the initial state, the jaw assembly 300 is in the open state, the closing elastic element 320 stores energy, and the clamp 211 in the clamping chamber 210 is in the semi-closed state.

[0151] Referring to Figures 12 and 16, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the clamp body assembly 200, the clamping mechanism 230 moves distally, and the closing elastic element 320 releases energy, causing the two clamp arms 310 to move closer to each other, thereby switching the jaw assembly 300 from the open state to the closed state; referring to Figures 13 and 17, in response to the clamping mechanism 220 continuing to move distally along the axial direction of the clamp body assembly 200, the clamping mechanism 220 drives the clamp 211 in the clamping chamber 210 to enter the jaw assembly 300, and the clamp 211 opens from the semi-closed state to the open state, thereby switching the jaw assembly 300 from the closed state to the open state;

[0152] Referring to Figures 14 and 18, in the clamping state, in response to the clamping mechanism 230 continuing to move distally along the axial direction of the clamp body assembly 200, the first sleeve 232b moves distally and accommodates a portion of each clamp arm 310, causing the jaw assembly 300 to switch from the open state to the closed state, thereby causing the clamp 211 in the jaw assembly 300 to close from the open state to the closed state.

[0153] Referring to Figure 25, the first sleeve 232b has a first limiting portion 232d, and referring to Figure 26, the jaw arm 310 has a second limiting portion 311. Referring to Figure 15, in the initial state, the first limiting portion 232d abuts against the second limiting portion 311, keeping the jaw assembly 300 in an open state. Referring to Figure 16, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the jaw assembly 200, the first sleeve 232b moves distally, causing the first limiting portion 232d to disengage from the second limiting portion 311, thereby releasing the limiting on the jaw arm 310. This allows the closing elastic element 320 to release energy, causing the two jaw arms 310 to move closer to each other until the jaw assembly 300 switches to a closed state.

[0154] In some embodiments, referring to Figures 15 to 18, the second limiting portion 311 is located near the rotation axis of the clamp arm 310, and the second limiting portion 311 of each clamp arm 310 protrudes away from the other clamp arm 310, forming a first clearance space on the distal side of the second limiting portion 311; the first limiting portion 232d protrudes relative to the inner wall of the first sleeve 232b, and a second clearance space is formed near the first limiting portion 232d. Referring to Figure 15, in the initial state, the first limiting portion 232d abuts against the second limiting portion 311 on the side of each clamp arm 310 away from the other clamp arm 310. Referring to Figure 16, in the clamping state, the first sleeve 232b moves to the distal side, causing the first limiting part 232d to move to the distal side of the second limiting part 311. The first limiting part 232d and the second limiting part 311 are offset from each other. The first limiting part 232d enters the second clearance space, and the second limiting part 311 enters the first clearance space, so that the clamp arm 310 can rotate smoothly to put the jaw assembly 300 into the closed state.

[0155] Referring to Figures 15 to 18, 25 and 26, the first limiting portion 232d has a first abutting portion 232e, and the second limiting portion 311 has a second abutting portion 311a. In the direction from near to far, for example, the second abutting portion 311a extends obliquely toward the rotation axis of the clamp arm 310. Referring to Figure 15, in the initial state, the first abutting part 232e abuts against the second abutting part 311a. Referring to Figure 16, in the clamping state, in response to the clamping mechanism 220 moving distally along the axial direction of the clamp body assembly 200, the first sleeve 232b moves distally, causing the first abutting part 232e to slide relative to the second abutting part 311a until the first abutting part 232e disengages from the second abutting part 311a. During the above process, the clamp arm 310 gradually rotates as the first abutting part 232e slides relative to the second abutting part 311a until the jaw assembly 300 enters the closed state. The movement of the clamp arm 310 is relatively smooth and has high stability.

[0156] Referring to Figures 15 to 18, the closing elastic member 320 has a first connecting structure 321 and a second connecting structure 322. The first connecting structure 321 abuts against one of the clamp arms 310 on the far side of its rotation axis, and the second connecting structure 322 abuts against the other clamp arm 310 on the far side of its rotation axis. The first connecting structure 321 and the second connecting structure 322 are configured to have a tendency to be relatively close in the initial state so that the jaw assembly 300 can enter the closed state when the clamp arm 310 is unrestrained.

[0157] Referring to Figure 27, the closing elastic member 320 includes a first abutting section 323, a connecting section 324 and a second abutting section 325 that are connected in sequence and bent relative to each other. The first abutting section 323 and the second abutting section 325 both extend in a direction from near to far. The first abutting section 323 has a first connecting structure 321 and the second abutting section 325 has a second connecting structure 322.

[0158] Referring to Figures 15 to 18 and 26, the clamp arm 310 includes a body 312 and a limiting protrusion 313. The limiting protrusion 313 is connected to the side of the body 312 and protrudes relative to the body 312. The closing elastic member 320 is wrapped around the limiting protrusion 313. The limiting protrusion 313 can provide an installation position for the closing elastic member 320 and support the first abutting section 323 and the second abutting section 325 to ensure the stability of the installation of the closing elastic member 320.

[0159] Referring to Figure 26, the clamp arm 310 also includes a stop 314. The stop 314 is connected to the side of the limiting protrusion 313 away from the body 312. A limiting space is defined between the stop 314 and the body 312. The first abutting section 323 and the second abutting section 325 are at least partially accommodated in the limiting space. The stop 314 and the body 312 can limit the first abutting section 323 and the second abutting section 325 on opposite sides, so that the first abutting section 323 and the second abutting section 325 abut the clamp arm 310 more stably, thereby improving the stability of the closure elastic member 320 installation.

[0160] Referring to Figure 26, the clamp arm 310 has a mounting hole 315. Referring to Figures 15 to 18, a first connecting structure 321 is inserted into the mounting hole 315 of one of the clamp arms 310, and a second connecting structure 322 is inserted into the mounting hole 315 of the other clamp arm 310. The first connecting structure 321 and the second connecting structure 322 abut against the inner wall of the mounting hole 315 to apply a force that brings the two clamp arms 310 closer to each other. The mounting hole 315 can provide reliable limiting for the first connecting structure 321 and the second connecting structure 322 to improve the stability of the closure elastic member 320 during installation.

[0161] The following description, in conjunction with Figures 11 to 14 and Figures 29 to 36, introduces the structure and operation of the clamping mechanism 220, clamping mechanism 230, and clamping chamber 210 in some embodiments of the present disclosure. It should be noted that the following content is merely illustrative and is not intended to limit the scope of this disclosure.

[0162] Referring to Figures 11 to 14, the clamping member 222 includes a first pushing part 222a, a second pushing part 222b, and a clamping part 222c connected sequentially from the proximal side to the distal side. The first pushing part 222a is connected to the first pushing member 221, the second pushing part 222b has elastic deformation capability, and the clamping part 222c is used to push the clamp 211. The clamping member 232 includes a second sleeve 232a, a first sleeve 232b, and a pivoting part 232c. The second sleeve... 232a and the first sleeve 232b are rotatably connected by the pivot 232c. When the first sleeve 232b rotates relative to the second sleeve 232a, the second pushing part 222b can deform. The second sleeve 232a is connected to the second pushing member 231. The jaw assembly 300 is located at the far end of the first sleeve 232b. The clamping member 222 is accommodated inside the clamping member 232. The axial direction of the jaw assembly 200 is the length direction of the second sleeve 232a.

[0163] Referring to Figures 2 to 7, the clamping mechanism 220 and the clamping mechanism 230 are driven by the operating component 400. The operating component 400 includes a clamping drive structure 410 and a clamping drive structure 420, both of which are movably connected to the main body 100.

[0164] Referring to Figures 29 to 32, the clamping chamber 210 has a clamping channel 212, with an inlet 212a and an outlet 212b respectively at opposite ends. The clamping chamber 210 stores a plurality of clamps 211, which are stacked sequentially in a direction perpendicular to the inlet 212a to the outlet 212b, with one clamp 211 located in the clamping channel 212. The clamping chamber 210 is also provided with a biasing member 213 and a support member 214. The support member 214 is movably disposed inside the clamping chamber 210 and has a groove for accommodating a single clamp 211. The support member 214 can maintain the orderly stacking of the plurality of clamps 211. One end of the biasing member 213 abuts against the support member 214 to apply a force toward the clamping channel 212 to the plurality of clamps 211 in the clamping chamber 210.

[0165] Referring to Figures 11 to 14, the main body 100 is connected to a fixing structure 140, and the jaw assembly 300 includes two jaw arms 310, each of which is rotatably connected to the fixing structure 140 at one end.

[0166] Referring to Figures 11 to 14 and Figures 33 to 36, the clamping chamber 210 is installed on the first sleeve 232b, the inlet 212a of the clamping channel 212 is used to supply the clamping piece 222 into the clamping chamber, and the outlet 212b is connected to the jaw assembly 300.

[0167] In the initial state, referring to Figures 11 and 33, one of the clamps 211 in the clamping chamber 210 is located in the clamping channel 212. For ease of description, this clamp 211 is named the first clamp 211a. The clamping part 222c of the clamping member 222 is located at the inlet 212a of the clamping chamber 210.

[0168] The clamping clamp enters the firing state. Referring to Figures 12, 13, 34, and 35, the clamping drive structure 410 moves relative to the main body 100 and abuts against the first pusher 221, driving the first pusher 221 to move distally. This causes the clamping member 222 to move distally, and the clamping part 222c moves distally along the clamping channel 212 and abuts against the first clamp 211a located in the clamping channel 212. The clamping part 222c continues to move distally so that the first clamp 211a in the clamping channel 212 passes through the outlet 212b. The clamping mechanism enters the jaw assembly 300; then, referring to FIG14, the clamping drive structure 420 moves relative to the main body 100 and abuts against the second pusher 231 to drive the second pusher 231 to move distally, causing the clamping member 232 to move distally, and the second sleeve 232a pushes the first sleeve 232b to move distally through the pivot part 232c. The first sleeve 232b houses part of the clamp arm 310 inside, so that the two clamp arms 310 come closer to each other, thereby causing the first clamp 211a in the jaw assembly 300 to close.

[0169] The clamping clamp enters the reset state. Referring to Figure 36, the clamping member 222 moves to the proximal side, so that the clamping part 222c returns to its initial position after passing through the clamping channel 212. The clamping channel 212 is emptied. The biasing member 213 releases energy and pushes the support member 214 to move towards the clamping channel 212, thereby causing the remaining clamps 211 in the clamping chamber 210 to move towards the clamping channel 212 until one clamp 211 reaches the clamping channel 212, preparing for the next firing. The clamping drive structure 410 and the clamping drive structure 420 are both reset to their initial positions.

[0170] In summary, the clamp provided in this embodiment is equipped with a pre-push component 600. In the clamping state, the pre-push component 600 can at least partially close the jaw assembly 300. During the process of the clamp 211 moving from the clamping chamber 210 into the jaw assembly 300, the at least partially closed jaw assembly 300 can limit the opening angle of the clamp 211, thereby slowing down the opening speed of the clamp 211 and preventing the clamp 211 from falling out of the jaw assembly 300, thus reducing the failure rate of the clamp.

[0171] It should be understood that although this disclosure describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0172] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this disclosure and are not intended to limit the scope of protection of this disclosure. All equivalent implementations or modifications made without departing from the spirit of the art of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A clamping pliers, comprising a main body, a clamp body assembly, a jaw assembly, and a pre-pushing assembly; The jaw assembly is connected to the jaw body assembly; the jaw body assembly is connected to the main body, and the jaw body assembly includes a clamping mechanism and a clamping mechanism; The pre-push assembly includes a pre-push member movably connected to the main body, the pre-push member having a first position and a second position, the second position being located distal to the first position; The clamping clamp has an initial state, a clamping state, and a clamping state; In the initial state, the pre-push member is located in the first position; In the clamping state, in response to the pre-push member being driven, the pre-push member abuts against the clamping mechanism and moves from the first position to the second position, causing the clamping mechanism to move distally and at least partially close the jaw assembly; in response to the clamping mechanism moving distally along the axial direction of the jaw assembly, the pre-push member remains in the second position, and the clamping mechanism drives the clamp into the jaw assembly; In the clamping state, in response to the clamping mechanism being driven, the clamping mechanism moves distally along the axial direction of the jaw assembly, causing the jaw assembly to close, thereby closing the clamp in the jaw assembly.

2. The clamping forceps according to claim 1, wherein, The pre-push component also includes a drive element, which is movably connected to the main body; In the clamping state, in response to the drive member being driven and moving relative to the main body, the drive member pushes against the pre-push member, causing the pre-push member to move from the first position to the second position, thereby causing the clamping mechanism to move distally.

3. The clamping forceps according to claim 2, wherein, The drive component is rotatably connected to the main body; In the clamping state, in response to the drive member being driven to rotate relative to the main body, the drive member abuts against the pre-push member and moves the pre-push member from the first position to the second position.

4. The clamping forceps according to claim 3, wherein, The driving component has a stop structure; In the initial state, the driving element is in the initial position; In the clamping state, in response to the drive member being driven, the clamp rotates from the initial position to the stop position, the stop structure abuts the pre-push member, and in the projection along the extension direction of the rotation axis of the drive member, the line connecting at least one point on the stop structure to the rotation axis of the drive member is parallel to the axial direction of the clamp body assembly.

5. The clamping pliers according to claim 4, wherein, In the clamping state, in response to the drive member being driven, it rotates from the initial position to the stop position. In the projection along the extension direction of the rotation axis of the drive member, the line connecting the contact position of the stop structure of the drive member at the stop position and the contact position of the pre-push member is perpendicular to the axial direction of the clamp body assembly.

6. The clamping pliers according to claim 3, wherein, The pre-push member has a first stop structure, and the drive member has a second stop structure; the pre-push member also has a third position, which is located distal to the second position; In the initial state, the driving element is in the initial position; In the clamping state, in response to the driving member being driven to rotate from the initial position to the stop position, the second stop structure rotates along the first rotation direction and abuts against the first stop structure, thereby causing the pre-push member to move from the first position to the third position. Then, the second stop structure continues to rotate along the first rotation direction and passes over the first stop structure. The driving member reaches the stop position, and the pre-push member moves from the third position to the second position and abuts against the driving member. The first stop structure enters the rotation path of the second stop structure, thereby preventing the second stop structure from rotating in the second rotation direction opposite to the first rotation direction.

7. The clamping forceps according to claim 6, wherein, The first stop structure has a first stop surface, and the second stop structure has a second stop surface. The first stop surface extends axially along the clamp body assembly or extends toward the feeding mechanism in a proximal direction. The second stop surface is configured to extend axially along the clamp body assembly or extend toward the feeding mechanism in a proximal direction when the drive member is in the stop position.

8. The clamping pliers according to any one of claims 4 to 7, wherein, The clamping mechanism includes a second reset member and a second pusher member. The second pusher member is movably connected to the main body and is configured to move distally to close the jaw assembly. The second reset member is disposed between the main body and the second pusher member and is configured to store energy when the second pusher member moves distally. The clamping jaws include a pushing portion. In the clamping state, in response to the movement of the pushing part relative to the main body, the pushing part pushes the driving member, causing the driving member to rotate from the initial position to the stop position, so that the pre-pushing member pushes the clamping mechanism and moves from the first position to the second position, thereby causing the clamping mechanism to move distally, and the second reset member stores energy; in response to the continued movement of the pushing part relative to the main body, the pushing part disengages from the driving member, the driving member remains in the stop position, and the pre-pushing member remains in the second position.

9. The clamping pliers according to claim 8, wherein, The pre-push component further includes a first elastic element, one end of which is connected to the main body, and the other end of which is connected to the pre-push component; In the initial state, the first elastic element stores energy; In the clamping state, in response to the pre-pushing member pushing against the clamping mechanism and moving from the first position to the second position, the clamping mechanism moves to the distal side, and the first elastic member releases part of the energy; In the clamping state, in response to the clamping mechanism continuing to move distally along the axial direction of the clamp body assembly, the clamping mechanism disengages from the pre-push member, the first elastic member releases energy, causing the pre-push member to move distally from the second position, thereby disengaging the pre-push member from the stop structure, and the drive member moves from the stop position to the initial position.

10. The clamping forceps according to claim 9, wherein, The clamping forceps also have a reset state; In the reset state, in response to the clamping mechanism and the feeding mechanism moving proximally, the clamping mechanism pushes against the pre-push member, causing the pre-push member to move to the first position. The first elastic member stores energy again, and the pushing part pushes against the driving member, causing the driving member to move from the initial position to the avoidance position. Then, the pushing part disengages from the driving member, and the driving member moves from the avoidance position back to the initial position.

11. The clamping forceps according to claim 9 or 10, wherein, The pre-push component further includes a second elastic element, one end of which is connected to the main body and the other end of which is connected to the drive element; In the clamping state, in response to the pushing part pushing the driving member, causing the driving member to move from the initial position to the stop position, the second elastic member stores energy; In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the first elastic element releases energy, causing the pre-push member to move distally from the second position, thereby disengaging the pre-push member from the stop structure. The second elastic element releases energy, causing the drive member to move from the stop position to the initial position.

12. The clamping pliers according to any one of claims 2 to 11, wherein, The pre-push component and the clamping mechanism are spaced apart.

13. The clamping pliers according to any one of claims 1 to 12, wherein, The pre-push member has a first pushing structure, and the clamping mechanism has a second pushing structure; In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the second pushing structure pushes against the first pushing structure, so that the clamping mechanism drives the pre-pushing member to move from the first position to the second position.

14. The clamping forceps according to claim 13, wherein, In a direction from near to far, at least one of the first pushing structure and the second pushing structure extends obliquely toward the feeding mechanism, and the second position is farther away from the feeding mechanism than the first position.

15. The clamping pliers according to claim 14, wherein, The pre-push member also has a first holding structure connected to the distal side of the first push structure, and the clamping mechanism also has a second holding structure connected to the proximal side of the second push structure; In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the jaw assembly, the second pushing structure abuts against the first pushing structure and slides relative to the first pushing structure until the second pushing structure disengages from the first pushing structure, so that the clamping mechanism drives the pre-pushing member to move from the first position to the second position, causing the clamping mechanism to move distally and at least partially close the jaw assembly, and the clamping mechanism drives the clamp distally to the proximal side of the jaw assembly; in response to the clamping mechanism continuing to move distally along the axial direction of the jaw assembly, the second retaining structure abuts against the first retaining structure and slides relative to the first retaining structure, so that the pre-pushing member is held in the second position, and the clamping mechanism drives the clamp to continue moving distally to enter the jaw assembly.

16. The clamping forceps according to claim 14 or 15, wherein, One of the pre-push member and the main body has a guide groove, which extends obliquely away from the clamping mechanism in a direction from near to far, and the guide groove has a first stop and a second stop; the other of the pre-push member and the main body are connected by a guide portion, which is accommodated in the guide groove. In the clamping state, in response to the clamping mechanism moving distally along the axial direction of the clamp body assembly, the pre-push member moves from the first stop of the guide portion in the guide groove to the second stop of the guide portion in the guide groove, so that the pre-push member moves from the first position to the second position.

17. The clamping clamp according to any one of claims 1 to 16, further comprising a clamping drive structure; In the clamping state, the clamping drive structure drives the clamping mechanism to move distally along the axial direction of the clamp body assembly.

18. The clamping clamp according to any one of claims 1 to 17, further comprising a clamping drive structure; In the clamping state, in response to the clamping drive structure driving the clamping mechanism to move distally along the axial direction of the clamp body assembly, the clamping mechanism drives the pre-push member to move from the first position to the second position; or, in the clamping state, the clamping drive structure drives the clamping mechanism to move distally along the axial direction of the clamp body assembly, and the clamping drive structure drives the pre-push member to move from the first position to the second position.

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