Surgical instrument

Abstract

A surgical instrument includes a main body, an action assembly, an operation assembly, and a non-return member. In the execution state, the non-return piece can be kept at the first position to prevent the first action mechanism from returning when the first action mechanism moves in the pushing direction, and the non-return piece can be driven by the second action mechanism to move to the second position to be separated from the first action mechanism when the second action mechanism moves in the pushing direction. In the reset state, the non-return piece can be driven by the first action mechanism moving in the reset direction to reset to the first position. The movement of the non-return piece between the first position and the second position is associated with the action of the action assembly; when the clip applier is used, the first action mechanism can be prevented from retreating when the first action mechanism moves towards the pushing direction without additional operation, the first action mechanism is unlocked after the first action mechanism conveys the clip in place, and the action of the non-return piece is reset when the first action mechanism is reset, so that the clip conveying stability is ensured, the operation of the clip applier is simplified, and the clip applier is more convenient to use. And user use is facilitated.

Description

Technical Field

[0001] This disclosure relates to a clamping clamp. Background Technology

[0002] During surgical procedures, surgical instruments are used to perform surgical operations. Some surgical instruments involve two distinct actions in a single operation. For example, a clip forceps consists of a clamping chamber and an end effector. The clamping chamber stores clips. A complete clip application process typically includes a delivery action and a clamping action. When using a clip forceps, the forceps perform the delivery action to move the clips stored in the chamber into the end effector. The forceps then perform the clamping action to close the end effector, causing the clips within to clamp onto tissue or blood vessels, thereby blocking blood flow. After a complete clip application process, the internal motion units of the forceps must be reset before the forceps can perform the next clip application process. Utility Model Content

[0003] In view of the shortcomings of the prior art, this disclosure aims to provide a surgical instrument.

[0004] This disclosure is achieved through the following technical solution:

[0005] A surgical instrument, comprising a body, an actuating component, an operating component, and a check valve;

[0006] The actuation component includes a first actuation mechanism and a second actuation mechanism, both of which are movably connected to the main body. The first actuation mechanism is configured to move along the propulsion direction to perform a first action and is also configured to move along a reset direction opposite to the propulsion direction to reset. The second actuation mechanism is configured to move along the propulsion direction to perform a second action and is also configured to move along a reset direction opposite to the propulsion direction to reset.

[0007] The operating component is connected to the first action mechanism and the second action mechanism;

[0008] The anti-return element is movably connected to the main body, and the anti-return element has a first position and a second position. In a direction perpendicular to the propulsion direction, the first position is closer to the first actuating mechanism than the second position.

[0009] The surgical instrument has an initial state, an execution state, and a reset state;

[0010] In the initial state, the check valve is located in the first position;

[0011] In the execution state, in response to the operating component driving the first actuating mechanism to move along the advancing direction, the first actuating mechanism performs the first action, and the check member located at the first position allows the first actuating mechanism to move along the advancing direction and prevents the first actuating mechanism from moving towards the reset direction; in response to the operating component driving the second actuating mechanism to move along the advancing direction, the second actuating mechanism performs the second action, and the second actuating mechanism drives the check member to move from the first position to the second position to disengage from the first actuating mechanism;

[0012] In the reset state, in response to the first actuating mechanism moving in the reset direction, the first actuating mechanism drives the check member to move from the second position to the first position.

[0013] For example, in the reset state, in response to the first actuating mechanism moving along the pushing direction, the check member is located in the second position; in response to the first actuating mechanism continuing to move along the pushing direction, the first actuating mechanism drives the check member to move from the second position to the first position.

[0014] For example, the check valve includes a check portion; the first actuating mechanism has a mating portion;

[0015] In the execution state, in response to the operating component driving the first actuating mechanism to move along the advancing direction, the check portion of the check member located at the first position allows the mating portion to move along the advancing direction; in response to the first actuating mechanism moving towards the reset direction, the check portion abuts against the mating portion to prevent the first actuating mechanism from continuing to move towards the reset direction.

[0016] For example, one of the stop portion and the mating portion has a plurality of first ratchet teeth arranged sequentially along the pushing direction, and the other has at least one second ratchet tooth. The first ratchet tooth has a first sliding surface and a first abutting surface, and the second ratchet tooth has a second sliding surface and a second abutting surface.

[0017] In the execution state, in response to the operating component driving the first actuating mechanism to move along the advancing direction, the first sliding surface and the second sliding surface slide relative to each other until they disengage, and the second ratchet passes over the first ratchet; in response to the first actuating mechanism moving towards the reset direction, the first abutting surface and the second abutting surface abut against each other to prevent the first actuating mechanism from continuing to move towards the reset direction.

[0018] For example, in the reset state, the first actuating mechanism moves in the reset direction until the mating part reaches the side of the check part in the reset direction, and then the first actuating mechanism drives the check member to move from the second position to the first position.

[0019] For example, the check valve further includes a first pushing part connected to the check valve; the first actuating mechanism has a first driving part located on one side of the first pushing part in the propulsion direction;

[0020] In the reset state, the first actuating mechanism moves in the reset direction, the first driving part pushes against the first pushing part, and then the first actuating mechanism continues to move in the reset direction to move the check member from the second position to the first position.

[0021] For example, the check member further includes a second pushing part, which is connected to the check member; the second actuating mechanism has a second driving part, which is located on one side of the second pushing part in the reset direction;

[0022] In the execution state, in response to the operation component driving the second action mechanism to move along the propulsion direction, the second drive part pushes against the second push part to move the anti-return member from the first position to the second position.

[0023] For example, one of the check valve and the body has a guide groove, and the other of the check valve and the body has a guide portion, the guide portion being received in the guide groove, the guide groove and the guide portion being configured to move relative to each other to guide the check valve to move between the first position and the second position.

[0024] For example, one of the check valve and the main body has a guide groove, the guide groove including a first groove segment whose extension direction is inclined relative to the propulsion direction, and the first groove segment having opposing first and second ends; the other of the check valve and the main body has a guide portion, the guide portion being received in the guide groove;

[0025] In the execution state, in response to the operation component driving the second action mechanism to move the anti-return member along the advancing direction, the anti-return member moves from the second end of the guide portion located in the first groove segment to the first end of the guide portion located in the first groove segment, and the anti-return member moves from the second position to the first position;

[0026] In the reset state, in response to the first actuating mechanism moving proximally, the check member moves from the second end of the guide portion located in the first groove segment to the first end of the guide portion located in the first groove segment, and the check member moves from the second position to the first position.

[0027] For example, the guide groove further includes a second groove segment, which is connected to the second end of the first groove segment, and the extension direction of the second groove segment is parallel to the propulsion direction;

[0028] In the initial state, the guide portion is located at the first end of the first groove segment;

[0029] In the execution state, in response to the operation component driving the second action mechanism to move along the propulsion direction, the anti-return member moves from the first end of the guide portion located in the first groove segment to the second end of the guide portion located in the first groove segment, so that the anti-return member moves from the first position to the second position;

[0030] In response to the operating component driving the second actuating mechanism to continue moving along the propulsion direction, the second actuating mechanism drives the anti-return element to continue moving along the propulsion direction, the guide portion enters the second groove segment, the second groove segment moves relative to the guide portion, and the anti-return element moves from the second position along the propulsion direction.

[0031] For example, the check valve includes a check portion and a first pushing portion, the first pushing portion being connected to one side of the check portion in the reset direction; the first actuating mechanism has a first driving portion and a mating portion, the first driving portion being located on one side of the first pushing portion in the advancing direction; the mating portion being located on the side of the first actuating mechanism closer to the check valve; the second actuating mechanism has a second driving portion;

[0032] In the reset state, in response to the second actuating mechanism moving along the reset direction, the second driving part pushes against the check part, causing the check part to move along the reset direction, the guide part is located in the second groove segment, and the second groove segment moves relative to the guide part;

[0033] In response to the first actuating mechanism moving along the reset direction, the first driving part pushes against the first pushing part, causing the check member to continue moving along the reset direction. The guide part enters the first slot from the second slot segment, and the first slot segment moves relative to the guide part until the guide part is located at the first end of the first slot segment.

[0034] For example, the surgical instrument further includes a clamping element connected to the body, the clamping element being configured to provide a force to the check element that brings it closer to the first actuating mechanism.

[0035] For example, the first actuating mechanism includes a first pushing member, a first actuating member, and a first resetting member. The first pushing member is connected to the first actuating member. Both the first pushing member and the first actuating member are movably connected to the main body. The first pushing member is configured to be driven by the operating component to move the first actuating member along the pushing direction to perform the first actuation. The first resetting member is disposed between the main body and the first pushing member. The first resetting member is configured to store energy when the operating component drives the first pushing member to move along the pushing direction, and to release energy to move the first pushing member along the resetting direction to reset the first actuating mechanism.

[0036] And / or,

[0037] The second actuating mechanism includes a second pusher, a second actuator, and a second resetter. The second pusher is connected to the second actuator, and both the second pusher and the second actuator are movably connected to the main body. The second pusher is configured to be driven by the operating component to move the second actuator along the propulsion direction to perform the second action. The second resetter is disposed between the main body and the second pusher. The second resetter is configured to store energy when the operating component drives the second pusher to move along the propulsion direction, and to release energy to move the second pusher along the reset direction to reset the second actuating mechanism.

[0038] For example, the operating components include a first operating handle and a second operating handle;

[0039] In the execution state, the first operating handle drives the first actuating mechanism to move along the propulsion direction, and the second operating handle drives the second actuating mechanism to move along the propulsion direction.

[0040] For example, the surgical instrument further includes a jaw assembly connected to the actuation assembly; a first actuation mechanism is configured to move along the advance direction to drive the clamp into the jaw assembly, and a second actuation mechanism is configured to move along the advance direction to close the jaw assembly. Attached Figure Description

[0041] Figure 1 A three-dimensional schematic diagram of a surgical instrument provided for some specific embodiments of this disclosure;

[0042] Figure 2 for Figure 1The diagram shows a portion of the surgical instrument after the main body has been made transparent, with the surgical instrument in its initial state and the check valve in the first position.

[0043] Figure 3 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in the execution state, the clamping mechanism begins to move distally, and the check valve is in the first position.

[0044] Figure 4 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in the execution state, the clamping mechanism has moved to the extreme position to the distal side, and the check valve is in the first position.

[0045] Figure 5 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in the execution state, the clamping mechanism begins to move distally, and the check valve is in the second position.

[0046] Figure 6 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in the execution state, the clamping mechanism has moved to the distal limit position, and the check element has moved to the distal limit position from the second position.

[0047] Figure 7 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in a reset state, the clamping mechanism has moved proximally to its initial position, and the check valve is in the second position.

[0048] Figure 8 for Figure 1 The diagram shows a portion of the surgical instrument after the main body has been made transparent. The surgical instrument is in a reset state, and the clamping mechanism has moved proximally to contact the check valve. The check valve moves from the second position to the first position.

[0049] Figure 9 for Figure 1 A cross-sectional view of the clamp body assembly and jaw assembly of the surgical instrument shown, wherein the surgical instrument is in its initial state;

[0050] Figure 10 for Figure 1 The diagram shows a cross-sectional view of the clamp body assembly and jaw assembly of a surgical instrument, wherein the surgical instrument is in the execution state and the clamping mechanism begins to move distally.

[0051] Figure 11 for Figure 1 The diagram shows a cross-sectional view of the clamp body assembly and jaw assembly of a surgical instrument, wherein the surgical instrument is in the execution state and the clamping mechanism has been moved distally to its limit position.

[0052] Figure 12 for Figure 1 The diagram shows a cross-sectional view of the clamp body assembly and clamp jaw assembly of a surgical instrument, wherein the surgical instrument is in an actuated state and the clamping mechanism begins to move distally.

[0053] Figure 13 for Figure 1 The diagram shows a cross-sectional view of the clamp body assembly and jaw assembly of a surgical instrument, wherein the surgical instrument is in the execution state and the clamping mechanism is moving distally but has not yet reached its limit position.

[0054] Figure 14 for Figure 1 The diagram shows a cross-sectional view of the clamp body assembly and clamp jaw assembly of a surgical instrument, wherein the surgical instrument is in the execution state and the clamping mechanism has been moved distally to its limit position.

[0055] Figure 15 for Figure 1 A three-dimensional schematic diagram of the check valve of the surgical instrument shown.

[0056] Figure 16 for Figure 1 A three-dimensional schematic diagram of the first pusher of the clamping mechanism of the surgical instrument shown.

[0057] Figure 17 for Figure 1 A three-dimensional schematic diagram of the second pusher of the clamping mechanism of the surgical instrument shown;

[0058] Figure 18-A A schematic diagram of the cooperation between the body of a surgical instrument and a check element provided for some other specific embodiments of this disclosure, wherein the surgical instrument is in an initial state and the check element is in a first position;

[0059] Figure 18-B A schematic diagram of the cooperation between the main body of a surgical instrument and a check element provided for some other specific embodiments of this disclosure, wherein the surgical instrument is in the execution state and the check element is located in the second position;

[0060] Figure 18-C A schematic diagram of the cooperation between the body of a surgical instrument and a check element provided for some other specific embodiments of this disclosure, wherein the surgical instrument is in an execution state and the check element moves from a second position to a distal position to a limit position;

[0061] Figure 18-DA schematic diagram of the cooperation between the body of a surgical instrument and a check element provided for some other specific embodiments of this disclosure, wherein the surgical instrument is in an initial state and the check element is in a first position;

[0062] Figure 18-E for Figure 18-D The diagram shows the interaction between the main body and the check valve, where the surgical instrument is in the execution state and the check valve is in the second position.

[0063] Figure 18-F for Figure 18-D The diagram shows the interaction between the main body and the check valve, where the surgical instrument is in the firing state and the check valve moves from the second position to the distal position to the limit position.

[0064] Figure 19 for Figure 1 A three-dimensional schematic diagram of the clip delivery handle of the surgical instrument shown;

[0065] Figure 20 for Figure 1 A three-dimensional schematic diagram of the clamping handle of the surgical instrument shown;

[0066] Figure 21 for Figure 1 A schematic diagram showing the coordination of the clip delivery handle, clip application handle, clip delivery mechanism, and clip application mechanism of the surgical instrument shown.

[0067] Figure 22 for Figure 1 A three-dimensional schematic diagram of the clamping chamber of the surgical instrument shown;

[0068] Figure 23 for Figure 22 A three-dimensional schematic diagram of the clamping chamber from another angle;

[0069] Figure 24 for Figure 22 A three-dimensional schematic diagram of the clamps stacked in the clamping compartment shown;

[0070] Figure 25 for Figure 22 A top view of the clamps stacked in the clamp compartment shown;

[0071] Figure 26 for Figure 1 A partial cross-sectional view of the clamp body assembly and jaw assembly of the surgical instrument shown in another direction, wherein the surgical instrument is in its initial state;

[0072] Figure 27 for Figure 1 A partial cross-sectional view of the clamp body assembly and jaw assembly of the surgical instrument shown in another direction, wherein the surgical instrument is in the execution state and the clamping mechanism begins to move distally.

[0073] Figure 28 for Figure 1 A partial cross-sectional view of the clamp body assembly and jaw assembly of the surgical instrument shown in another direction, wherein the surgical instrument is in the execution state and the clamping mechanism is moved distally to the limit position.

[0074] Figure 29 for Figure 1 A partial cross-sectional view of the body and jaw assemblies of the surgical instrument shown, with the surgical instrument reset to its initial state.

[0075] The reference numerals in the above figures are:

[0076] 100-Main body, 110-Guide part, 120-Clamping part, 130-Guide shaft, 140-Fixing structure;

[0077] 200-Clamp body assembly, 210-Clamping chamber, 211-Clamp, 211a-First clamp, 212-Clamping channel, 212a-Inlet, 212b-Outlet, 213-Biasing component, 214-Support component, 220-Clamping mechanism, 221-First pusher component, 221a-Mating part, 221b-Second ratchet, 221c-First drive part, 221d-Second abutment structure, 221e-Second sliding surface, 2 21f - Second abutment surface, 222 - Feeding clamp, 222a - First pushing part, 222b - Second pushing part, 222c - Feeding clamp, 223 - First resetting part, 230 - Clamping mechanism, 231 - Second pushing part, 231a - Second driving part, 231b - Fourth abutment structure, 232 - Clamping part, 232a - First sleeve, 232b - Second sleeve, 232c - Pivoting part, 233 - Second resetting part;

[0078] 300 - Jaw assembly, 310 - Jaw arm;

[0079] 400 - Operating component, 410 - Clamping handle, 411 - First abutment structure, 411a - Abutment groove, 412 - First grip, 420 - Clamping handle, 421 - Third abutment structure, 422 - Second grip;

[0080] 500 - Check valve, 510 - Check valve part, 511 - First ratchet, 511a - First sliding surface, 511b - First abutting surface, 520 - First pushing part, 530 - Second pushing part, 540 - Guide groove, 541 - First groove segment, 542 - Second groove segment. Detailed Implementation

[0081] 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.

[0082] 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.

[0083] 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.

[0084] This disclosure applies to surgical instruments. During surgical procedures, surgical instruments are used to perform surgical operations. Some surgical instruments have two different actions in a single working process: a first action and a second action. The first action and the second action must be performed sequentially, and the first action should not retract before it is completed. For example, in a clamping forceps, the first action is a clamp delivery action, and the second action is a clamp application action. The clamping chamber 210 of the clamping forceps pre-stores clamps 211. During a single working process, the operating component 400 drives the clamp delivery component (first action mechanism) to move, causing the clamp 211 to enter the jaw assembly 300 from the clamping chamber 210, and drives the clamp application component (second action mechanism) to move, causing the jaw assembly 300 to close, thereby closing the clamp 211 and applying the clamp 210 to a blood vessel or tissue. Afterward, the clamp delivery component, the clamp application component, and the operating component 400 are reset to their initial state. When the operating component 400 drives the clamping component to move, if the operating component 400 unexpectedly loses power or is subjected to an undesirable external force that causes the clamping component to retract, the clamp 211 will lose its constraint and move unexpectedly, causing the clamping clamp to malfunction.

[0085] The following describes the surgical instrument provided in this embodiment using a clamp as an example. The actuating components are a clamp body assembly 200 and a clamp jaw assembly 300. The first actuating mechanism is a clamp delivery mechanism 220, whose first action is to push the clamp 211 from the clamp chamber 210 into the clamp jaw assembly 300. The second actuating mechanism is a clamp application mechanism 230, whose second action is to close the clamp jaw assembly 300. The advancing direction is from near to far along the axial direction of the clamp body assembly 200, and the resetting direction is from far to near along the axial direction of the clamp body assembly 200. The axial direction refers to the length direction of the clamp body assembly 200. The side of the component in the advancing direction is the distal side of the component, and the side of the component in the resetting direction is the proximal side of the component. It should be noted that the specific structure and specific actions performed by the first and second actuating mechanisms do not affect the operation of the check member 500. The following content is merely an example and is not intended to limit this disclosure.

[0086] Based on this, refer to Figures 1 to 8 The present disclosure provides a surgical instrument, which is a clamp, comprising a main body 100, a clamp body assembly 200, a clamp jaw assembly 300, an operating assembly 400, and a check member 500.

[0087] Reference Figure 1 , Figures 9 to 14 The jaw assembly 300 is connected to the jaw body assembly 200; 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. For example, a clamping chamber 210 is installed on the jaw body assembly 200, and a clamp 211 is stored in the clamping chamber 210.

[0088] Reference Figures 2 to 8 The operating component 400 is connected to the first pusher 221 and the second pusher 231;

[0089] Reference Figures 2 to 8 The check valve 500 is movably connected to the main body 100, and the check valve 500 has a first position and a second position, such as... Figures 2 to 4 As shown, return item 500 is located in the first position, as... Figures 5 to 7 As shown, the return piece 500 is in the second position. In the direction perpendicular to the axial direction of the clamp body assembly 200, the first position is closer to the feeding mechanism 220 than the second position.

[0090] The clamp has an initial state, an execution state, and a reset state. In the initial state, the check valve 500 is in the first position. A complete working process of the clamp is as follows:

[0091] The clamp switches from the initial state to the execution state. In the execution state, refer to... Figures 2 to 4 In response to the operating component 400 driving the clamping mechanism 220 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. The check member 500, located in the first position, allows the clamping mechanism 220 to move distally and prevents the clamping mechanism 220 from moving proximally. During this process, when the operating component 400 unexpectedly loses power or is subjected to an undesirable external force that causes the clamping mechanism 220 to tend to move proximally, the check member 500 can prevent the clamping mechanism 220 from moving proximally to avoid the clamp 211 losing its constraint and causing clamping failure, thus ensuring the stability of the clamping action.

[0092] Reference Figures 4 to 6 In response to the operation component 400 driving the clamping mechanism 230 to move distally along the axial direction of the clamp body assembly 200, the clamping mechanism 230 closes the jaw assembly 300, and the clamping mechanism 230 drives the check member 500 to move from the first position to the second position to disengage from the feeding mechanism 220, thereby releasing the restriction of the check member 500 on the feeding mechanism 220.

[0093] Then, the clamp switches from the execution state to the reset state. In the reset state, refer to... Figures 6 to 8 and Figure 1 In response to the clamping mechanism 220 and the clamping mechanism 230 moving proximally along the axial direction of the clamp body assembly 200, the clamping mechanism 220 drives the check member 500 to move from the second position to the first position, and the clamping clamp is reset to the initial state.

[0094] During the above-described operation, in the execution state, the check member 500 can remain in the first position to prevent the clamping mechanism 220 from retracting when the clamping mechanism 220 moves distally, and move to the second position to disengage from the clamping mechanism 220 under the action of the clamping mechanism 230 when the clamping mechanism 230 moves distally; in the reset state, the check member 500 can be reset to the first position under the action of the clamping mechanism 220 moving proximally. The operation of the clamping pliers can be cyclically executed, and the movement of the check member 500 between the first and second positions is related to the action of the clamp body assembly 200. During use, no additional operation is required to prevent the clamping mechanism 220 from retracting when it moves distally, to unlock the clamping mechanism 220 after it has clamped the object, and to reset the check member 500 when the clamping mechanism 220 resets. This simplifies the operation of the clamping pliers while ensuring clamping stability, making it convenient for users.

[0095] It should be noted that, exemplarily, referring to Figure 1 , Figures 9 to 14 , Figures 26 to 29 The clamping chamber 210 can be detachably connected to the clamp 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 clamp 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 clamp 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 disclosed concept.

[0096] The specific structures of the clamping mechanism 220 and the clamping mechanism 230 can be configured according to actual needs, as long as they can perform clamping and clamping actions under the drive of the operating component 400. The following example illustrates the specific structure of the clamping mechanism 220 and the clamping mechanism 230, mainly for explaining how the function of the return stop component 500 in this disclosure is realized in a specific application scenario, and should not be construed as a limitation on the concept of the disclosure.

[0097] For example, refer to Figures 9 to 14 The clamping mechanism 220 includes a first pusher 221 and a clamping member 222 connected to each other. The operating component 400 drives the clamping member 222 to move to the distal side by driving the first pusher 221 to move to the distal side. The clamping member 222 abuts against the clamp 211 in the clamping chamber 210 so that the clamp 211 enters the jaw assembly 300.

[0098] For example, refer to Figures 9 to 14The clamping mechanism 230 includes a second pusher 231 and a clamping member 232 connected to each other. The operating component 400 drives the clamping member 232 to move to the distal side by driving the second pusher 231 to move to the distal side. The clamping member 232 applies a force to the jaw assembly 300 to close the jaw assembly 300.

[0099] Reference Figures 2 to 8 and Figure 15 The check valve 500 includes a check valve part 510; see reference. Figures 2 to 8 and Figure 16 The clamping mechanism 220 has a mating part 221a, for example, the first pusher 221 has a mating part 221a.

[0100] During execution, refer to Figures 2 to 4 In response to the operation component 400 driving the clamping mechanism 220 to move distally, the check portion 510 of the check member 500 in the first position allows the mating portion 221a to move distally, so as to allow the clamping mechanism 220 to move distally; in response to the clamping mechanism 220 moving proximally, the check portion 510 abuts against the mating portion 221a to prevent the clamping mechanism 220 from moving proximally.

[0101] In some embodiments, refer to Figures 2 to 8 , Figure 15 and Figure 16 The stop portion 510 has a plurality of first ratchet teeth 511 arranged sequentially along the axial direction of the clamp body assembly 200, and the mating portion 221a has a second ratchet tooth 221b. The first ratchet tooth 511 has a first sliding surface 511a and a first abutting surface 511b, and the second ratchet tooth 221b has a second sliding surface 221e and a second abutting surface 221f.

[0102] In execution state, refer to Figures 2 to 4 In response to the operation component 400 driving the clamping mechanism 220 to move distally, the second sliding surface 221e of the second ratchet 221b slides relative to the first sliding surface 511a of the first ratchet 511 until the second sliding surface 221e disengages from the first sliding surface 511a. The second ratchet 221b then passes over the first ratchet 511, and the second abutting surface 221f of the second ratchet 221b reaches the distal side of the first abutting surface 511b of the first ratchet 511 it has passed. This process is repeated until the second ratchet 221b passes over multiple first ratchets 511 in sequence. In response to the clamping mechanism 220 moving proximally, the second abutting surface 221f of the second ratchet 221b abuts against the first abutting surface 511b of the first ratchet 511 nearby, thereby preventing the clamping mechanism 220 from moving proximally again, thus achieving a stop for the clamping mechanism 220 during the clamping process.

[0103] In other embodiments, the mating part 221a may have a plurality of first ratchet teeth 511 arranged sequentially along the axial direction of the clamp body assembly 200, and the check part 510 may have second ratchet teeth 221b. The check principle is the same as in the above embodiments and will not be described in detail here. In the above two embodiments, one, two, or more second ratchet teeth 221b may be provided, depending on actual needs.

[0104] In the reset state, in response to the clamping mechanism 220 moving proximally along the axial direction of the clamp assembly 200, the check member 500 is in the second position. During this process, the check member 500 remains disengaged from the clamping mechanism 220, so the check member 500 does not prevent the clamping mechanism 220 from moving proximally, and the clamping mechanism 220 can move proximally relative to the check member 500. Then, in response to the clamping mechanism 220 continuing to move proximally along the axial direction of the clamp assembly 200, the clamping mechanism 220 drives the check member 500 from the second position to the first position. The timing of the clamping mechanism 220 driving the check member 500 from the second position to the first position can be reasonably set according to actual needs, so that both the clamping mechanism 220 and the check member 500 can be successfully reset.

[0105] For example, in the reset state, the clamping mechanism 220 moves proximally, referring to... Figure 6 and Figure 7 Before the mating part 221a reaches the proximal side of the check part 510, the check member 500 remains in the second position disengaged from the feeding mechanism 220; see reference Figure 8 and Figure 1 The clamping mechanism 220 moves proximally to the mating part 221a, reaching the proximal side of the check part 510. Subsequently, the clamping mechanism 220 drives the check member 500 from the second position to the first position. This avoids the check member 500 moving to the first position too early during the clamping mechanism 220's resetting process, thus preventing it from hindering the clamping mechanism 220's resetting.

[0106] For example, refer to Figure 15 The check valve 500 also includes a first abutment 520 connected to the check valve 510; the clamping mechanism 220 has a first drive unit 221c, for example, referring to... Figure 16 The first pusher 221 has a first drive unit 221c; refer to Figures 2 to 8 The first drive unit 221c is located on the far side of the first push unit 520.

[0107] In the reset state, refer to Figure 8 and Figure 1When the clamping mechanism 220 moves proximally until the mating part 221a reaches the proximity of the check part 510, the first driving part 221c pushes against the first pushing part 520, and then the clamping mechanism 220 continues to move proximally so that the check part 500 moves from the second position to the first position.

[0108] The first pushing part 520 is positioned near the stop part 510, and the first driving part 221c only abuts against the first pushing part 520 when the mating part 221a reaches the near side of the stop part 510. This can prevent the stop member 500 from obstructing the reset of the clamping mechanism 220 when it moves from the second position to the first position.

[0109] For example, refer to Figure 15 The check valve 500 further includes a second abutment 530, which is connected to the check valve 510; the clamping mechanism 230 has a second drive unit 231a, for example, referring to Figure 17 The second pusher 231 has a second drive unit 231a, as shown in the reference. Figures 2 to 8 The second drive unit 231a is located near the second push unit 530.

[0110] In execution state, refer to Figure 4 and Figure 5 In response to the operation component 400 driving the clamping mechanism 230 to move to the distal side, the second drive part 231a pushes against the second push part 530 to move the check member 500 from the first position to the second position.

[0111] Reference Figures 2 to 8 and Figure 15 The check valve 500 has a guide groove 540, and the main body 100 has a guide portion 110. The guide portion 110 is accommodated in the guide groove 540. The guide groove 540 and the guide portion 110 are configured to move relative to each other to guide the check valve 500 to move between a first position and a second position, thereby ensuring the stability of the movement of the check valve 500.

[0112] In some embodiments, refer to Figures 2 to 8 and Figure 15 The check valve 500 has a guide groove 540, which includes a first groove segment 541. The extension direction of the first groove segment 541 is inclined relative to the pushing direction of the feeding mechanism 220. The first groove segment 541 has a first end and a second end, the first end being the distal end of the first groove segment 541 and the second end being the proximal end of the first groove segment 541. Figures 2 to 8 and Figure 15 With reference to the direction, the first end of the first groove segment 541 is higher than the second end of the first groove segment 541; with reference to Figures 2 to 8 The main body 100 has a guide part 110, which is accommodated in the guide groove 540.

[0113] Reference Figures 4 to 5 In response to the operation component 400 driving the clamping mechanism 230 to move the check member 500 to the distal side, the guide groove 540 moves to the distal side relative to the guide portion 110, and the check member 500 moves from the distal end of the guide portion 110 located in the first groove segment 541 to the proximal end of the guide portion 110 located in the first groove segment 541, so that the check member 500 moves from the first position to the second position.

[0114] Reference Figure 8 and Figure 1 In response to the operation component 400 driving the clamping mechanism 220 to move the check member 500 proximally, the guide groove 540 moves proximally relative to the guide portion 110, and the check member 500 moves from the proximal end of the guide portion 110 located in the first groove segment 541 to the distal end of the guide portion 110 located in the first groove segment 541, so that the check member 500 moves from the second position to the first position.

[0115] The cooperation between the guide groove 540 and the guide portion 110 can provide guidance for the movement of the stop member 500 relative to the main body 100. The first groove segment 541, which is inclined relative to the axial direction of the clamp assembly 200, can convert the movement of the clamping mechanism 230 or the feeding mechanism 220 along the axial direction of the clamp assembly 200 into the movement of the stop member 500 along the extension direction of the first groove segment 541, so that the movement of the stop member 500 has a component in the direction perpendicular to the axial direction of the clamp assembly 200, so as to achieve the movement away from the feeding mechanism 220 under the drive of the clamping mechanism 230, and the movement of the stop member 500 close to the feeding mechanism 220 under the drive of the feeding mechanism 220.

[0116] For example, refer to Figures 2 to 8 and Figure 15 The guide groove 540 also includes a second groove segment 542, which is connected to the second end (i.e. the proximal end) of the first groove segment 541, and the extension direction of the second groove segment 542 is parallel to the axial direction of the clamp body assembly 200.

[0117] In the initial state, refer to Figures 2 to 4 The guide section 110 is located at the first end (i.e., the far end) of the first groove section 541.

[0118] In execution state, refer to Figure 4 and Figure 5 In response to the operating component 400 driving the clamping mechanism 230 to move distally, the clamping mechanism 230 drives the check member 500 to move distally. The check member 500 moves from the distal end of the guide portion 110 located in the first groove segment 541 to the proximal end of the guide portion 110 located in the first groove segment 541, so that the check member 500 moves from the first position to the second position; refer to Figure 5 and Figure 6In response to the operation component 400 driving the clamping mechanism 230 to continue moving distally, the clamping mechanism 230 drives the check member 500 to continue moving distally, the guide portion 110 enters the second groove section 542, the second groove section 542 moves distally relative to the guide portion 110, so that the check member 500 moves distally from the second position along the axial direction of the clamp body assembly 200.

[0119] During the distal movement of the clamping mechanism 230, the check valve 500 first tilts relative to the axial direction of the clamp assembly 200, then moves in a direction parallel to the axial direction of the clamp assembly 200, and then moves in a direction perpendicular to the axial direction of the clamp assembly 200 (e.g., ...). Figures 2 to 8 In the up-down direction (as shown), the movement range of the check valve 500 is small, which helps to reduce the size of the clamping clamp in this direction.

[0120] In other embodiments, reference is made to Figures 18-A to 18-B Alternatively, the main body 100 can be configured with a guide groove 540, the first end being the proximal end of the first groove segment 541, and the second end being the distal end of the first groove segment 541, so as to... Figures 18-A to 18-C With the direction as a reference, the second end of the first groove 541 is higher than the first end of the first groove 541; the check valve 500 has a guide portion 110.

[0121] Reference Figures 18-A to 18-B In response to the operation component 400 driving the clamping mechanism 230 to move the check member 500 to the distal side, the guide portion 110 moves to the distal side relative to the guide groove 540. The guide portion 110 moves from the proximal end of the first groove segment 541 to the distal end of the first groove segment 541, so that the check member 500 moves from the first position to the second position.

[0122] Reference Figure 18-B and Figure 18-A In response to the operation component 400 driving the clamping mechanism 220 to move the check member 500 proximally, the guide portion 110 moves proximally relative to the guide groove 540. The guide portion 110 moves from the distal end of the first groove segment 541 to the proximal end of the first groove segment 541, so that the check member 500 moves from the second position to the first position.

[0123] For example, refer to Figures 18-A to 18-C The guide groove 540 also includes a second groove segment 542, which is connected to the second end (i.e., the far end) of the first groove segment 541, and the extension direction of the second groove segment 542 is parallel to the axial direction of the clamp body assembly 200.

[0124] In the initial state, refer to Figures 2 to 4 The guide section 110 is located at the first end (i.e., the proximal end) of the first groove section 541.

[0125] In execution state, refer to Figure 4 and Figure 5In response to the operating component 400 driving the clamping mechanism 230 to move distally, the clamping mechanism 230 drives the check member 500 to move distally, and the guide portion 110 moves from the proximal end of the first groove segment 541 to the distal end of the first groove segment 541, causing the check member 500 to move from the first position to the second position; see reference Figure 5 and Figure 6 In response to the operation component 400 driving the clamping mechanism 230 to continue moving distally, the clamping mechanism 230 drives the check member 500 to continue moving distally, the guide portion 110 enters the second groove section 542, and the guide portion 110 moves distally relative to the second groove section 542, so that the check member 500 moves distally from the second position along the axial direction of the clamp body assembly 200.

[0126] In some embodiments, taking the check valve 500 having a guide groove 540 and the main body 100 having a guide portion 110 as an example, refer to Figures 2 to 8 and Figure 15 There are two guide grooves 540 and two guide parts 110. The two guide parts 110 are accommodated in the two guide grooves 540 in a one-to-one correspondence. Two limiting positions are formed on the check member 500, thereby preventing the check member 500 from twisting relative to the main body 100, so as to avoid the clamp failure caused by this. Figures 18-A to 18-C The embodiments shown are similar to those described above.

[0127] It is understandable that the number of guide grooves 540 and guide parts 110 can be set to more than two, which can be set according to actual needs; two or more guide grooves 540 can be set to be separate from each other or connected to each other.

[0128] In other embodiments, reference is made to Figures 18-D to 18-F Taking an example where the check valve 500 has a guide portion 110 and the main body 100 has a guide groove 540, both the guide groove 540 and the guide portion 110 are provided. The opposite sides of the guide portion 110 abut against the inner wall of the guide groove 540, and at least one side of the guide portion 110 forms a surface contact with the inner wall of the guide groove 540, thereby preventing the check valve 500 from twisting relative to the main body 100 and thus avoiding clamp failure. Similarly, the above configuration can also be applied to embodiments where the check valve 500 has a guide groove 540 and the main body 100 has a guide portion 110.

[0129] In the execution state, the movement of the check element 500 is entirely driven by the clamping mechanism 230. However, in the reset state, because the stroke of the clamping mechanism 230 is less than that of the feeding mechanism 220, the clamping mechanism 230 resets to its position before the feeding mechanism 220. To prevent the check element 500 from moving to the first position prematurely and obstructing the reset of the feeding mechanism 220, in some embodiments, in the reset state, refer to... Figures 6 to 7In response to the clamping mechanism 230 moving proximally, the second drive unit 231a moves proximally until it abuts the check valve 510; in response to the clamping mechanism 230 continuing to move proximally, the second drive unit 231a pushes against the check valve 510, causing the check valve 500 to move proximally, and the guide portion 110 is located in the second groove section 542, and the second groove section 542 moves relative to the guide portion 110; see reference Figure 8 and Figure 1 In response to the feeding mechanism 220 moving proximally, the first drive part 221c pushes against the first push part 520, causing the check member 500 to continue moving proximally. The guide part 110 enters the first groove 541 from the second groove 542. The first groove 541 moves relative to the guide part 110 until the guide part 110 is located at the first end (i.e., the far end) of the first groove 541.

[0130] Reference Figures 6 to 8 The clamping mechanism 230 and the clamping delivery mechanism 220 simultaneously begin to move proximally to reset. In this embodiment, refer to... Figure 6 and Figure 7 From the moment the clamping mechanism 230 begins to reset until it is fully reset, the clamping mechanism 230 drives the check member 500 to move a certain distance proximally. During this process, the first driving part 221c of the feeding mechanism 220 and the first pushing part 520 of the check member 500 have not yet come into contact. From the moment the clamping mechanism 230 is fully reset until the first driving part 221c of the feeding mechanism 220 comes into contact with the first pushing part 520 of the check member 500, the check member 500 remains in the position detached from the feeding mechanism 220. After the clamping mechanism 230 has been fully reset for a period of time, the first driving part 221c of the feeding mechanism 220 comes into contact with the first pushing part 520 of the check member 500 and drives the check member 500 to move proximally again until the check member 500 is reset to its initial position.

[0131] During the reset process, the check piece 500 is powered by the clamping mechanism 230 and the feeding mechanism 220, and there is an interval between the two reset strokes. This not only makes more reasonable use of the reset power of the clamping mechanism 230 and the feeding mechanism 220, but also prevents the check piece 500 from obstructing the reset of the feeding mechanism 220.

[0132] In other embodiments, in the firing state, the clamping mechanism 230 moves distally, causing the check member 500 to move from a first position to a second position; in the reset state, when the clamping mechanism 230 moves proximally, a gap always exists between the check member 510 and the clamping mechanism 230; in response to the proximal movement of the feeding mechanism 220, the first driving part 221c pushes against the first pushing part 520, causing the check member 500 to move proximally, thereby moving the check member 500 from the second position to the first position. That is, the check member 500 is powered only by the feeding mechanism 220 during the reset process.

[0133] The above settings can also be applied to Figures 18-A to 18-C The illustrated embodiments Figures 18-D to 18-F The principles of the embodiments shown are the same as those of the embodiments described above, and will not be repeated here.

[0134] Reference Figures 2 to 8 The clamping pliers also include a clamping member 120, which is connected to the body 100 and contacts a check member 500. The clamping member 120 is configured to provide a force to the check member 500 that moves toward the clamping mechanism 220; for example, the clamping member 120 may be a torsion spring or a spring. (See reference...) Figures 2 to 4 When the clamping mechanism 220 moves during execution, the clamping member 120 can keep the check member 500 in the first position, so that the check member 500 can cooperate more reliably with the clamping mechanism 220 and ensure the check-off effect; refer to Figures 4 to 7 In the execution state, after the clamping mechanism 230 moves the check member 500 to the second position, and before the clamping mechanism 220 moves the check member 500 to the first position in the reset state, the clamping member 120 is lifted and stores energy; refer to Figure 8 and Figure 1 During the reset state, as the clamping mechanism 220 drives the check valve 500 to the first position, the clamping member 120 releases energy.

[0135] Reference Figures 2 to 14 The main body 100 includes a guide shaft 130 extending axially along the clamp body assembly 200. The clamping mechanism 220 and the clamping mechanism 230 are slidably connected to the guide shaft 130. For example, the first pusher 221 and the second pusher 231 are slidably connected to the guide shaft 130. The guide shaft 130 provides mounting positions and guidance for the clamping mechanism 220 and the clamping mechanism 230, thereby improving the structural and operational stability of the clamp.

[0136] Reference Figures 2 to 14The clamping mechanism 220 further includes a first reset member 223, which is disposed between the main body 100 and the first pusher 221. The first reset member 223 is configured to store energy when the operating component 400 drives the first pusher 221 to move distally, and to release energy to move the first pusher 221 proximally to reset the clamping mechanism 220. The clamping mechanism 230 further includes a second reset member 233, which is disposed between the main body 100 and the second pusher 231. The second reset member 233 is configured to store energy when the operating component 400 drives the second pusher 231 to move distally, and to release energy to move the second pusher 231 proximally to reset the clamping mechanism 230. After the execution state ends, the external force applied by the operating component 400 to the clamping mechanism 220 and the clamping mechanism 230 is removed. Without additional operation, the first reset component 223 and the second reset component 233 can release energy to reset the clamping mechanism 220 and the clamping mechanism 230. The operation of the clamping clamp is relatively simple and easy to use.

[0137] The following combination Figures 2 to 14 , Figures 19 to 29 The structure and operation of the operating component 400, clamp delivery mechanism 220, clamp application mechanism 230, and clamping chamber 210 in some embodiments of the surgical instrument (clamping forceps) provided in this disclosure are described. It should be noted that the following content is merely illustrative and is not intended to limit the scope of this disclosure.

[0138] Reference Figures 2 to 8 The operating component 400 includes a clamping handle 410 and an applying handle 420, both of which are movably connected to the main body 100. A complete working process of the clamp is as follows:

[0139] The clamp switches from the initial state to the execution state. In the execution state, refer to... Figures 2 to 4 In response to the clamping handle 410 moving relative to the main body 100 and driving the clamping mechanism 220 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 into the jaw assembly 300. The check member 500, located in the first position, allows the clamping mechanism 220 to move distally and prevents it from moving proximally. During this process, if the operating assembly 400 unexpectedly loses power or is subjected to an undesirable external force that causes the clamping mechanism 220 to tend to move proximally, the check member 500 can prevent the clamping mechanism 220 from moving proximally to avoid the clamp 211 losing its restraint and causing clamp failure; see reference. Figures 4 to 6In response to the clamping handle 420 moving relative to the main body 100 and driving the clamping mechanism 230 to move distally along the axis of the clamp body assembly 200, the clamping mechanism 230 closes the jaw assembly 300 and drives the check member 500 to move from the first position to the second position to disengage from the clamping mechanism 220.

[0140] Then, the clamp switches from the execution state to the reset state. In the reset state, refer to... Figures 6 to 8 and Figure 1 In response to the clamping mechanism 220 and the clamping mechanism 230 moving proximally, the clamping mechanism 220 drives the check valve 500 to move from the second position to the first position, and the clamping clamp returns to its initial state.

[0141] The operating component 400 includes a clamping handle 410 and an applying handle 420. The clamping handle 410 is used to drive the clamping mechanism 220 to move to the distal side, and the applying handle 420 is used to drive the applying mechanism 230 to move to the distal side. Users can operate the two handles separately according to their needs to perform the clamping action and the applying action respectively, which helps to simplify the operating logic of the clamping pliers and reduce the difficulty of using the clamping pliers.

[0142] Reference Figures 1 to 8 Both the clamping handle 410 and the clamping handle 420 are rotatably connected to the main body 100; see reference. Figure 19 The clamping handle 410 has a first abutment structure 411, and the clamping mechanism 220 has a second abutment structure 221d. For example, refer to... Figure 16 The first pusher 221 has a second abutment structure 221d, as shown in the reference. Figures 2 to 8 The first abutment structure 411 and the second abutment structure 221d are movably fitted together; see reference. Figure 20 The clamping handle 420 has a third abutment structure 421, and the clamping mechanism 230 has a fourth abutment structure 231b, for example, referring to... Figure 17 The second pusher 231 has a fourth abutment structure 231b, as shown in the reference. Figures 2 to 8 The third abutment structure 421 and the fourth abutment structure 231b are movably fitted together.

[0143] Both the clamping handle 410 and the clamping handle 420 are capable of rotating in a first direction and a second direction opposite to the first direction, for example, with Figures 2 to 8 The directions shown are for reference only. The first direction is clockwise, and the second direction is counterclockwise.

[0144] Reference Figures 2 to 4 In response to the clockwise rotation of the clamping handle 410, the first abutting structure 411 abuts against the second abutting structure 221d, causing the clamping handle 410 to drive the clamping mechanism 220 to move to the distal side.

[0145] Reference Figures 4 to 6 In response to the clockwise rotation of the clamping handle 420, the third abutting structure 421 abuts against the fourth abutting structure 231b, causing the clamping handle 420 to drive the clamping mechanism 230 to move to the distal side.

[0146] Reference Figures 6 to 7 In response to the clamping mechanism 230 moving to the proximal side, the third abutting structure 421 abuts against the fourth abutting structure 231b, causing the clamping handle 420 to rotate counterclockwise.

[0147] Reference Figures 6 to 8 In response to the clamping mechanism 220 moving to the proximal side, the first abutting structure 411 abuts against the second abutting structure 221d, causing the clamping handle 410 to rotate counterclockwise.

[0148] The width direction of the main body 100 is perpendicular to the pushing direction of the clamping mechanism 220, so as to... Figures 2 to 8 The direction shown is for reference only; the width direction of the main body 100 is perpendicular to the paper.

[0149] In some embodiments, refer to Figure 19 In the width direction of the main body 100, both sides of the clamping handle 410 are provided with a first abutment structure 411; both sides of the clamping mechanism 220 are provided with a second abutment structure 221d, for example, referring to Figure 16 The first pusher 221 has a second abutment structure 221d on both sides, as shown in the figure. Figure 21 Each first abutment structure 411 corresponds to a second abutment structure 221d. (Refer to...) Figure 20 The clamping handle 420 has a third abutment structure 421; the clamping mechanism 230 has a fourth abutment structure 231b, for example, referring to... Figure 17 The second pusher 231 has a fourth abutment structure 231b, as shown in the reference. Figure 21 In the width direction of the main body 100, the third abutment structure 421 and the fourth abutment structure 231b are both located between the two first abutment structures 411. As a result, the clamping mechanism 220 and the clamping mechanism 230 are subjected to relatively balanced forces and occupy less space.

[0150] The clamping handle 410 and the clamping handle 420 can have various structural configurations. For example, refer to... Figure 19 The first abutting structure 411 has an abutting groove 411a, as shown in the figure. Figure 16 The second abutment structure 221d is a protruding structure, as shown in the reference. Figure 21The second abutment structure 221d is received in the abutment groove 411a. In response to rotation of the feed handle 410 in a first direction, the inner wall of the abutment groove 411a pushes against the second abutment structure 221d, causing the feed mechanism 220 to move distally; in response to movement of the feed mechanism 220 proximally, the second abutment structure 221d pushes against the inner wall of the abutment groove 411a, causing the feed handle 410 to rotate in a second direction. For example, refer to... Figure 19 The clamping handle 410 also includes a first grip 412, and a first abutment structure 411 is connected to the first grip 412. The first grip 412 is used to provide a force application position for the user. The force application position is located on one side of the rotation axis of the clamping handle 410. The first abutment structure 411 is used to cooperate with the position of the second abutment structure 221d located on the other side of the rotation axis of the clamping handle 410.

[0151] For example, refer to Figure 20 and Figure 17 Both the third abutment structure 421 and the fourth abutment structure 231b are protruding structures. For example, refer to... Figure 20 The clamping handle 420 also includes a second grip 422 and a third abutment structure 421 connected to the second grip 422. The second grip 422 is used to provide a force application position for the user. The force application position is located on one side of the rotation axis of the clamping handle 420. The third abutment structure 421 is used to cooperate with the position of the fourth abutment structure 231b located on the other side of the rotation axis of the clamping handle 420.

[0152] In other embodiments, the clamping handle 420 may be provided with a third abutment structure 421 on both sides in the width direction of the main body 100, and the clamping mechanism 230 may be provided with a fourth abutment structure 231b on both sides, with each third abutment structure 421 corresponding to a fourth abutment structure 231b; the first abutment structure 411 and the second abutment structure 221d are both located between the two third abutment structures 421.

[0153] Reference Figures 9 to 14The 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. The clamping member 222c is used to push the clamp 211. The clamping member 232 includes a first sleeve 232a, a second sleeve 232b, and a pivoting part 232c. The first sleeve 232a and the second sleeve 232b are rotatably connected through the pivoting part 232c. When the second sleeve 232b rotates relative to the first sleeve 232a, the second pushing part 222b can deform. The first sleeve 232a is connected to the second pushing member 231. The jaw assembly 300 is located at the distal end of the second 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 first sleeve 232a.

[0154] Reference Figures 22 to 25 The clamping chamber 210 has a clamping channel 212, with an inlet 212a and an outlet 212b 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.

[0155] Reference Figures 9 to 14 The main body 100 is connected to a fixed structure 140, and the jaw assembly 300 includes two jaw arms 310, each of which is rotatably connected to the fixed structure 140 at one end.

[0156] Reference Figures 9 to 14 , Figures 26 to 29 The clamping chamber 210 is installed on the second 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.

[0157] In the initial state, refer to Figure 9 and Figure 26 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 entrance 212a of the clamping chamber 210.

[0158] The clamping forceps enter the execution state, refer to... Figure 10and Figure 11 , Figure 27 and Figure 28 The operating component 400 drives the first pusher 221 to move distally, causing the clamping member 222 to move distally. 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 enters the jaw assembly 300 through the outlet 212b; then, referring to... Figures 12 to 14 The operating component 400 drives the second pusher 231 to move distally, causing the clamping member 232 to move distally. The first sleeve 232a pushes the second sleeve 232b to move distally through the pivot part 232c. The second sleeve 232b houses part of the clamp arm 310 inside, so that the two clamp arms 310 move closer to each other, thereby causing the first clamp 211a in the jaw assembly 300 to close.

[0159] The clamp enters the reset state, refer to... Figure 29 The feed clamp 222 moves to the proximal side, so that the feed clamp 222c returns to its initial position after passing through the feed clamp channel 212, and the feed clamp channel 212 is emptied. The biasing member 213 releases energy and pushes the support member 214 to move in the direction of the feed clamp channel 212, so that the remaining clamps 211 in the clamping chamber 210 move in the direction of the feed clamp channel 212 until one clamp 211 reaches the feed clamp channel 212, preparing for the next firing.

[0160] The check valve 500 and its related structure in the surgical instruments provided in this disclosure can also be applied to other types of surgical instruments besides the clamping forceps described above. For example, they can also be applied to clamping forceps that first close the jaw assembly and then push the clamp and deform the clamp in the closed jaw assembly to ensure that the jaw assembly remains closed during the pushing of the clamp; they can also be applied to other surgical instruments with the same requirements.

[0161] In summary, the surgical instrument provided in this embodiment, in its execution state, allows the check member 500 to remain in a first position to prevent the first actuating mechanism from retracting when the first actuating mechanism moves in the advancing direction, and to move to a second position to disengage from the first actuating mechanism when the second actuating mechanism moves in the advancing direction. In the reset state, the check member 500 can be reset to the first position by the first actuating mechanism moving in the reset direction. The working process of the surgical instrument can be cyclically executed, and the movement of the check member 500 between the first and second positions is related to the action of the first actuating mechanism. During use, no additional operation is required to prevent the first actuating mechanism from retracting when it moves in the advancing direction, unlock the first actuating mechanism after it completes its first action, and reset the check member 500 when the first actuating mechanism resets. This simplifies the operation of the surgical instrument while ensuring the stability of the first action execution, making it convenient for users.

[0162] It should be understood that although this specification 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.

[0163] 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 surgical instrument, characterized by, The surgical instrument comprises a main body, a motion assembly, an operation assembly and a check element; The motion assembly comprises a first motion mechanism and a second motion mechanism, both of which are movably connected to the main body, the first motion mechanism is configured to move in a pushing direction to perform a first action, the first motion mechanism is configured to move in a resetting direction opposite to the pushing direction to reset, the second motion mechanism is configured to move in a pushing direction to perform a second action, and the second motion mechanism is configured to move in a resetting direction opposite to the pushing direction to reset; The operation assembly is connected to the first motion mechanism and the second motion mechanism; The check element is movably connected to the main body, and has a first position and a second position, the first position is closer to the first motion mechanism than the second position in a direction perpendicular to the pushing direction; The surgical instrument has an initial state, an execution state and a resetting state; In the initial state, the check element is located at the first position; In the execution state, in response to the operation assembly driving the first motion mechanism to move in the pushing direction, the first motion mechanism performs the first action, the check element located at the first position allows the first motion mechanism to move in the pushing direction and prevents the first motion mechanism from moving in the resetting direction; in response to the operation assembly driving the second motion mechanism to move in the pushing direction, the second motion mechanism performs the second action, and the second motion mechanism drives the check element to move from the first position to the second position to disengage the first motion mechanism; In the resetting state, in response to the first motion mechanism moving in the resetting direction, the first motion mechanism drives the check element to move from the second position to the first position.

2. The surgical instrument of claim 1, wherein, In the resetting state, in response to the first motion mechanism moving in the pushing direction, the check element is located at the second position; in response to the first motion mechanism continuing to move in the pushing direction, the first motion mechanism drives the check element to move from the second position to the first position.

3. The surgical instrument of claim 1 or 2, wherein, The check element comprises a check part; the first motion mechanism has a matching part; In the execution state, in response to the operation assembly driving the first motion mechanism to move in the pushing direction, the check part of the check element located at the first position allows the matching part to move in the pushing direction; in response to the first motion mechanism moving in the resetting direction, the check part abuts against the matching part to prevent the first motion mechanism from continuing to move in the resetting direction.

4. The surgical instrument of claim 3, wherein, One of the check part and the matching part has a plurality of first ratchets arranged in sequence in the pushing direction, the other has at least one second ratchet, the first ratchets have first sliding surfaces and first abutting surfaces, and the second ratchet has second sliding surfaces and second abutting surfaces; In the execution state, in response to the operation assembly driving the first action mechanism to move in the advancing direction, the first sliding surface slides against the second sliding surface until disengagement, the second ratchet gear overcomes the first ratchet gear; in response to the first action mechanism moving in the reset direction, the first abutting surface abuts against the second abutting surface to prevent the first action mechanism from continuing to move in the reset direction.

5. The surgical instrument of claim 3, wherein, In the reset state, the first action mechanism moves in the reset direction until the engaging portion reaches one side of the check portion in the reset direction, and then the first action mechanism drives the check member to move from the second position to the first position.

6. The surgical instrument of claim 5, wherein, The check member further comprises a first pushing portion connected to the check portion; the first action mechanism has a first driving portion located on one side of the first pushing portion in the advancing direction; In the reset state, the first action mechanism moves in the reset direction, the first driving portion pushes the first pushing portion, and then the first action mechanism continues to move in the reset direction to drive the check member to move from the second position to the first position.

7. The surgical instrument of claim 3, wherein, The check member further comprises a second pushing portion connected to the check portion; the second action mechanism has a second driving portion located on one side of the second pushing portion in the reset direction; In the execution state, in response to the operation assembly driving the second action mechanism to move in the advancing direction, the second driving portion pushes the second pushing portion to drive the check member to move from the first position to the second position.

8. The surgical instrument of claim 6 or 7, wherein, One of the check member and the main body has a guide groove, and the other has a guide portion accommodated in the guide groove, and the guide groove and the guide portion are configured to move relative to each other to guide the check member to move between the first position and the second position.

9. The surgical instrument of claim 1, wherein, One of the check member and the main body has a guide groove, and the other has a guide portion accommodated in the guide groove, and the guide groove and the guide portion are configured to move relative to each other to guide the check member to move between the first position and the second position. In the execution state, in response to the operation assembly driving the second action mechanism to move the check member in the advancing direction, the check member moves from the guide portion at the second end of the first groove segment to the guide portion at the first end of the first groove segment, and the check member moves from the second position to the first position; In the reset state, in response to the first action mechanism moving proximally, the check member moves from the guide portion at the second end of the first groove segment to the guide portion at the first end of the first groove segment, and the check member moves from the second position to the first position.

10. The surgical instrument of claim 9, wherein, The guide groove further comprises a second groove segment in communication with the second end of the first groove segment, and the extension direction of the second groove segment is parallel to the advancing direction; In the initial state, the guide part is located at the first end of the first slot section; In the execution state, in response to the operation assembly driving the second action mechanism to move in the advancing direction, the check piece moves from the guide part being located at the first end of the first slot section to the guide part being located at the second end of the first slot section, so that the check piece moves from the first position to the second position; In response to the operation assembly driving the second action mechanism to continue moving in the advancing direction, the second action mechanism drives the check piece to continue moving in the advancing direction, the guide part enters the second slot section, the second slot section moves relative to the guide part, and the check piece moves from the second position in the advancing direction.

11. The surgical instrument of claim 10, wherein, The check piece comprises a check part and a first pushing part, the first pushing part is connected to one side of the check part in the resetting direction; the first action mechanism has a first driving part and a matching part, the first driving part is located at one side of the first pushing part in the advancing direction; the matching part is located at one side of the first action mechanism close to the check piece; the second action mechanism has a second driving part; In the resetting state, in response to the second action mechanism moving in the resetting direction, the second driving part pushes the check part, so that the check piece moves in the resetting direction, the guide part is located in the second slot section, and the second slot section moves relative to the guide part; In response to the first action mechanism moving in the resetting direction, the first driving part pushes the first pushing part, so that the check piece continues to move in the resetting direction, the guide part enters the first slot section from the second slot section, the first slot section moves relative to the guide part, and the guide part is located at the first end of the first slot section.

12. The surgical instrument of claim 1, wherein, The surgical instrument further comprises a compression piece connected to the main body, and the compression piece is configured to provide a force close to the first action mechanism to the check piece.

13. The surgical instrument of claim 1, wherein, The first action mechanism comprises a first pushing piece, a first execution piece, and a first resetting piece, the first pushing piece is connected to the first execution piece, the first pushing piece and the first execution piece are movably connected to the main body, the first pushing piece is configured to be driven by the operation assembly to drive the first execution piece to move in the advancing direction to execute the first action, and the first resetting piece is arranged between the main body and the first pushing piece, the first resetting piece is configured to store energy when the operation assembly drives the first pushing piece to move in the advancing direction, and release energy to make the first pushing piece move in the resetting direction to reset the first action mechanism; and / or, The second action mechanism comprises a second pushing member, a second executing member and a second resetting member, the second pushing member is connected to the second executing member, the second pushing member and the second executing member are movably connected to the main body, the second pushing member is configured to drive the second executing member to move along the advancing direction to execute the second action under the driving of the operation assembly, the second resetting member is arranged between the main body and the second pushing member, the second resetting member is configured to store energy when the operation assembly drives the second pushing member to move along the advancing direction, and to make the second pushing member move along the resetting direction to reset the second action mechanism when the energy is released.

14. The surgical instrument of claim 1, wherein, The operation assembly comprises a first operation handle and a second operation handle; In the executing state, the first operation handle drives the first action mechanism to move along the advancing direction, and the second operation handle drives the second action mechanism to move along the advancing direction.

15. The surgical instrument of claim 1, wherein, The surgical instrument further comprises a jaw assembly connected to the action assembly, the first action mechanism is configured to drive a clip into the jaw assembly by moving along the advancing direction, and the second action mechanism is configured to make the jaw assembly close by moving along the advancing direction.

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