clip applier

Abstract

This disclosure provides a clamping pliers, including a jaw assembly, a lever assembly, a housing, a clamping drive mechanism, and a reset mechanism. The lever assembly is connected to the housing, the jaw assembly is connected to the distal end of the lever assembly, the clamping drive mechanism is configured to drive the clamp into the jaw assembly, and the reset mechanism includes an operating member and a clamping reset drive member. In response to the operating member driving the clamping reset drive member to move along a first direction, the clamping pliers switch from a first state to a second state, such that the axial projections of the second drive portion of the clamping reset drive member and the first drive portion of the clamping drive mechanism at least partially overlap, driving the clamping drive mechanism to move axially towards the proximal side to achieve the reset of the clamping drive mechanism. This disclosure allows for manual reset of the clamping drive mechanism with a single operation of the operating member, resulting in a simple structure and convenient use.

Description

Technical Field

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

[0002] In human surgical procedures, such as abdominal surgery, clip forceps are commonly used to apply clamps to tissues or blood vessels. These clamps have two arms that can close to fix the target tissue or blood vessel between them, thus achieving hemostasis and ligation closure. Multi-shot clip forceps can apply multiple clamps consecutively, making them more convenient and increasingly popular in recent years.

[0003] A type of repeating clamp in related technology includes a jaw assembly, a wrench, a clamping magazine, a clamp feeding drive mechanism, a jaw driving mechanism, and a clamp pushing drive mechanism. The clamping magazine contains clamps. The wrench has an open position, a neutral position, and a closed position. A user presses the wrench, causing it to move from the open position to the neutral position, and then to the closed position.

[0004] To apply multiple clamps consecutively, the clamping forceps must perform three actions: clamp delivery, jaw closure (clamping action), and clamp push. When the wrench moves from the open position to the middle position, the clamp delivery drive mechanism delivers the foremost clamp in the clamp chamber to the ready position within the jaw assembly (clamp delivery action). At this point, the clamping forceps are in the clamp delivery completed state, and the user can adjust the angle of the jaw assembly to align the clamp with the target tissue or blood vessel. The user then continues to press the wrench, moving it from the middle position to the closed position, closing the jaw assembly (clamping action), thus applying the clamp to the target tissue or blood vessel. When the wrench is released, it moves from the closed position to the open position, and the clamp push drive mechanism moves the other clamps in the clamp chamber forward one position (clamp push action). Summary of the Invention

[0005] The purpose of this disclosure is to provide a clamping tool, which is achieved through the following technical solution:

[0006] This disclosure provides a clamping pliers, including a jaw assembly, a bar body assembly, a housing, a clamping drive mechanism, and a reset mechanism;

[0007] The shaft assembly is connected to the housing, the jaw assembly is connected to the distal end of the shaft assembly, and the clamping drive mechanism is configured to drive the clamp into the jaw assembly.

[0008] The clamping drive mechanism is provided with a first drive unit;

[0009] The reset mechanism includes an operating component and a clamping reset drive component. The clamping reset drive component is connected to the operating component and includes a second drive unit.

[0010] The clamp has a first state and a second state;

[0011] In the first state, the projections of the second drive unit and the first drive unit in the axial direction do not overlap;

[0012] In the second state, the axial projections of the second drive unit and the first drive unit at least partially overlap.

[0013] In response to the movement of the operating member along the first direction, the clamping reset drive member is driven to move, causing the clamping clamp to switch from the first state to the second state. The second drive unit abuts against the first drive unit, and the operating member drives the clamping drive mechanism to move axially toward the proximal side through the clamping reset drive member to achieve the reset of the clamping drive mechanism.

[0014] In some embodiments, the reset mechanism further includes a first switching part; the clamping reset drive further includes a second switching part; in the first state, in response to the operation member driving the clamping reset drive to move, the first switching part and the second switching part cooperate to rotate the second switching part, causing the second drive part to approach the clamping drive mechanism and switch the clamping clamp to the second state.

[0015] In some embodiments, the clamping reset drive is rotatably connected to the operating member; the first switching part is separated from the second switching part and the second switching part is located at the distal end of the first switching part; in response to the operating member driving the clamping reset drive to move, the second switching part engages with the first switching part to drive the second drive part to move toward the clamping drive mechanism.

[0016] In some embodiments, the reset mechanism further includes a first biasing member, through which the clamping reset drive member is held in a first state; in response to movement of the clamping reset drive member, a first switching part abuts against a second switching part to overcome the biasing force of the first biasing member, causing the clamping clamp to switch to a second state.

[0017] In some embodiments, the first biasing member is configured to apply a biasing force to the clamping reset drive member to move the second drive portion away from the clamping drive mechanism in order to hold the clamping clamp in a first state.

[0018] In some embodiments, the clamping reset drive is rotatably connected to the operating member; the second switching part is disposed on the side of the clamping reset drive near the clamping drive mechanism; the first switching part abuts against the second switching part and is closer to the clamping drive mechanism relative to the rotation center of the clamping drive; in response to the movement of the clamping reset drive, the rotation center of the clamping drive gradually approaches the first switching part, and the second switching part rotates to cause the second drive part to move toward the clamping drive mechanism.

[0019] In some embodiments, the reset mechanism further includes a first biasing member, and the clamping reset drive member is held in a first state by the cooperation of the first biasing member and the first switching part; in the first state, in response to the movement of the clamping reset drive member, the rotation center of the clamping drive member gradually approaches the first switching part, and the second switching part rotates under the biasing force of the first biasing member to switch the clamping clamp to the second state.

[0020] In some embodiments, the first biasing member is configured to apply a biasing force to the clamping reset drive member to bring the second drive portion closer to the clamping drive mechanism, and the first switching portion abuts against the second switching portion to apply an abutting force to move the second drive portion away from the clamping drive mechanism, so as to hold the clamping clamp in a first state.

[0021] In some embodiments, the clamping reset drive is at least partially elastic, and in response to the operation member driving the clamping reset drive to move, the clamping reset drive causes the second drive portion to move toward the clamping drive mechanism due to its own elastic deformation.

[0022] In some embodiments, the reset mechanism further includes a limiting portion configured to abut against the clamping reset drive member when the second drive member approaches the clamping drive mechanism, so as to guide the clamping reset drive member to rotate.

[0023] In some embodiments, the first switching part is a guide ramp that extends from the proximal end to the distal end and deviates from the clamping drive mechanism.

[0024] In some embodiments, the clamp feeding drive mechanism includes a clamp feeding rod configured to push the clamp into the jaw assembly, and a first drive portion configured to abut against a second drive portion.

[0025] In some embodiments, the first driving part is disposed on the outside of the feeding rod, and the first driving part protrudes outward or is recessed inward relative to the outside surface of the feeding rod.

[0026] In some embodiments, the clamping pliers further include a stop assembly configured to open the clamps in the jaw assembly; the stop assembly is located at the distal end of the clamping drive mechanism, the stop assembly has a stop assembly drive portion, and the clamping drive mechanism has a stop reset transmission portion; in response to movement of the operating member in a first direction, the stop reset transmission portion moves in the first direction to abut against the stop assembly drive portion to reset the stop assembly.

[0027] In some embodiments, the clamping forceps further includes a stop; the jaw assembly and the shaft assembly are configured to be inserted into a surgical channel; the stop is disposed in the housing and is axially closer to the distal end of the clamping forceps relative to the operating member; in response to insertion of the jaw assembly and the shaft assembly into the surgical channel, the end of the surgical channel abuts against the stop to prevent the operating member from being held by the surgical channel and moving in a first direction.

[0028] A second aspect of this disclosure also provides a clamping clamp, comprising:

[0029] Jaw assembly, bar body assembly, housing, clamp feeding drive mechanism, jaw drive mechanism, reset mechanism, and stop;

[0030] The shaft assembly is connected to the housing, the jaw assembly is connected to the distal end of the shaft assembly, the clamp feeding drive mechanism is configured to drive the clamp into the jaw assembly, and the jaw drive mechanism is configured to drive the jaw assembly to close.

[0031] The jaw assembly and the shaft assembly are configured to be inserted into the surgical channel;

[0032] The reset mechanism includes an operating component and a reset drive component;

[0033] In response to the movement of the operating member along the first direction, the reset driving member drives the clamping driving mechanism and / or the jaw driving mechanism to move along the first direction, thereby resetting the clamping driving mechanism and / or the jaw driving mechanism.

[0034] A stop is disposed in the housing and is axially closer to the distal end of the clamp relative to the operating member; in response to the insertion of the jaw assembly and the shaft assembly into the surgical channel, the end of the surgical channel abuts against the stop to prevent the operating member from being held by the surgical channel and moving in the first direction.

[0035] In some embodiments, the jaw drive mechanism includes a sleeve, and the jaw assembly closes in response to distal movement of the sleeve.

[0036] In some embodiments, the surgical access includes a puncture cannula.

[0037] In some embodiments, the diameter of the stop is larger than the diameter at the inlet of the puncture cannula.

[0038] In some embodiments, the stop has a recess in which the shaft assembly is at least partially received.

[0039] In some embodiments, the stop is annular.

[0040] In some embodiments, the operating member has a proximal position and a distal position, and in response to the operating member moving from the distal position to the proximal position, the clamping drive mechanism and / or jaw drive mechanism are reset; when the operating member is in the distal position, the stop member is located at the distal end of the operating member.

[0041] In some embodiments, the proximal end of the stop is located inside the operating member, and the distal end of the stop is located at the distal opening of the operating member. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the clamp provided in some embodiments of this disclosure.

[0043] Figure 2A-2B This is a schematic diagram of the clamping compartment provided in some embodiments of this disclosure.

[0044] Figure 3 This is a schematic diagram of the structure of a clip provided in some embodiments of this disclosure.

[0045] Figure 4 This is a schematic diagram of the structure of a clamp provided in some embodiments of the present disclosure, wherein the wrench is in the open position and part of the clamp housing has been removed.

[0046] Figure 4A for Figure 4 A schematic diagram of the switching mechanism.

[0047] Figure 4B for Figure 4 A schematic diagram of the connection mechanism.

[0048] Figure 5A This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 5B A cross-sectional structural diagram from the MM perspective, in which the clamping component is not in contact with the clamp.

[0049] Figure 5B This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 5A A cross-sectional structural diagram from an LL perspective, showing that the clamping assembly is not in contact with the clamp.

[0050] Figure 6A This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 6B A cross-sectional structural diagram from the MM perspective, in which the clamping assembly abuts against the clamp and pushes the clamp into the jaw assembly.

[0051] Figure 6B This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 6A A cross-sectional structural diagram from an LL perspective, showing the clamping assembly abutting against the clamp and pushing the clamp into the jaw assembly.

[0052] Figure 6C This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 6D A cross-sectional structural diagram from the MM perspective, showing the jaw assembly closed.

[0053] Figure 6D This disclosure provides a partial area of ​​the clamping forceps in some embodiments. Figure 6C A schematic diagram of the cross-sectional structure from an LL perspective, showing the jaw assembly closed.

[0054] Figure 6EThis is a schematic diagram showing the engagement of the clamping block and elastic rod with the clamp according to some embodiments of this disclosure.

[0055] Figure 7 This is a partial cross-sectional view of a clamp provided in some embodiments of this disclosure, wherein the jaw assembly is in the open state.

[0056] Figure 7A This is a partial schematic diagram of a clamping drive mechanism according to some embodiments of this disclosure.

[0057] Figure 7B and Figure 7C This is a partial schematic diagram of the clamping drive mechanism and the clamp in the jaw assembly at different angles according to some embodiments of this disclosure.

[0058] Figure 7D This is a partial schematic diagram of the clamping drive mechanism of some embodiments of the present disclosure in the closed state of the jaw assembly.

[0059] Figure 7E This is a partial structural diagram of the jaw assembly in the closed state and the clamping drive mechanism resetting.

[0060] Figure 8 This is a top view of a clamping device provided in some embodiments of this disclosure, wherein the operating part is partially cut out, and the clamping drive mechanism and the jaw drive mechanism are in the initial position, and the reset mechanism is in the initial state.

[0061] Figure 8A yes Figure 8 Enlarged view of section A1 in the middle.

[0062] Figure 9 This is a schematic diagram of the structure of a guide pivot provided in some embodiments of this disclosure.

[0063] Figure 10 This is a schematic diagram of the guide pivot provided in some embodiments of this disclosure from another angle.

[0064] Figure 11 This is a schematic diagram of the structure of a wrench provided in some embodiments of this disclosure.

[0065] Figure 12 This is a schematic diagram of the structure of the guide channel provided in some embodiments of this disclosure.

[0066] Figure 13 This is a schematic diagram of the first component and the reset drive unit cooperating according to some embodiments of this disclosure.

[0067] Figure 13A yes Figure 13 Enlarged view of section B in the middle.

[0068] Figure 14This is a schematic diagram of the structure of the first component provided in some embodiments of this disclosure.

[0069] Figure 15 This is a schematic diagram of the structure of a second component provided in some embodiments of this disclosure.

[0070] Figure 16 This is a schematic diagram from one perspective of the reset driver and mounting plate provided in some embodiments of this disclosure.

[0071] Figure 17 This is a schematic diagram from another perspective of the reset driver and mounting plate provided in some embodiments of this disclosure.

[0072] Figure 18 This is an exploded view of the reset driver and mounting plate provided in some embodiments of this disclosure.

[0073] Figure 19 This is a schematic diagram showing the cooperation between the clamping drive tube, the sleeve, and the clamping rod provided in some embodiments of this disclosure.

[0074] Figure 20 This is a schematic diagram of the sleeve and the feed rod cooperating according to some embodiments of this disclosure.

[0075] Figure 21 This is a schematic diagram of the structure of the sleeve provided in some embodiments of this disclosure.

[0076] Figure 22 This is a schematic diagram of the reset drive component and the sleeve in some embodiments of this disclosure.

[0077] Figure 23 This is a schematic diagram showing the cooperation between the switching component and the operating component in some embodiments of this disclosure.

[0078] Figure 24 This is a schematic diagram of the structure of a switching component according to some embodiments of this disclosure.

[0079] Figure 25 This is a partial cross-sectional view of the clamping forceps according to some embodiments of this disclosure.

[0080] Figure 26 This is a cross-sectional view of a clamp provided in some embodiments of this disclosure, wherein the wrench is in the middle position.

[0081] Figure 27 This is a top view of the clamp provided in some embodiments of this disclosure, wherein the operating part is partially cut, the clamping drive mechanism reaches the clamping completion position, and the reset mechanism is in the initial state.

[0082] Figure 27A yes Figure 27 Enlarged view at point A2 in the middle.

[0083] Figure 28This is a cross-sectional view of a clamp provided in some embodiments of this disclosure, wherein the wrench is in the closed position.

[0084] Figure 29 This is a top view of the clamping pliers provided in some embodiments of this disclosure, wherein the operating part is partially cut, the clamping drive mechanism is automatically reset, the jaw drive mechanism has not yet been reset, and the reset mechanism is in the initial state.

[0085] Figure 29A yes Figure 29 Enlarged view at point A3 in the middle.

[0086] Figure 30 This is a top view of the clamp provided in some embodiments of this disclosure, wherein the operating part is partially cut out, and the clamping drive mechanism and the jaw drive mechanism cannot automatically reset normally, and the reset mechanism is in the initial state.

[0087] Figure 30A yes Figure 30 Enlarged view at A4 in the middle.

[0088] Figure 31 This is a top view of the clamping pliers provided in some embodiments of this disclosure, wherein the operating member is partially cut out, and the operating member and the reset drive member drive the jaw drive mechanism and the clamping drive mechanism to reset.

[0089] Figure 31A yes Figure 31 Enlarged view at A5 in the middle.

[0090] Figure 32 This is a top view of a clamp according to some embodiments of the present disclosure, wherein the operating part is partially cut out, and the reset mechanism is in an initial state.

[0091] Figure 32A yes Figure 32 Enlarged view of point C in the middle.

[0092] Figure 33 This is a schematic diagram showing the cooperation between the operating element and the reset drive element in some embodiments of this disclosure.

[0093] Figure 34 This is a schematic diagram of the structure of the operating components according to some embodiments of this disclosure.

[0094] Figure 35 This is a schematic diagram of the structure of a reset driver according to some embodiments of this disclosure.

[0095] Figure 36 This is a partial cross-sectional schematic diagram of the clamping forceps according to some embodiments of this disclosure.

[0096] Figure 37 This is a partial cross-sectional schematic diagram of a reset mechanism according to some embodiments of the present disclosure, with the reset mechanism in its initial state.

[0097] Figure 38 This is a partial cross-sectional schematic diagram of a reset mechanism according to some embodiments of the present disclosure, wherein the reset mechanism is in a reset state.

[0098] Figure label:

[0099] 1-Operating component; 2-Head housing; 3-Handle housing; 4-Wrench; 5-Lever assembly; 6-Clamping chamber;

[0100] 7-Bottom; 8-First side; 9-Second side; 10-Inlet; 11-First transverse barb; 12-Second transverse barb; 13-Slanted end; 14-Jaw assembly; 15-First jaw arm; 16-Second jaw arm;

[0101] 22-Clamp; 23-First clamping arm; 25-First ear; 26-Connecting part; 27-Second clamping arm; 29-Second ear; 30-Clamping part;

[0102] 31-Push clamp block; 32-Jaw drive tube; 33-Protruding rib; 34-Baffle;

[0103] 35 - Sleeve; 351 - First opening; 352 - Second opening; 353 - Jaw reset fitting;

[0104] 36-First reset component; 37-Base; 38-Guide groove; 39-Guide surface;

[0105] 40-Feeding clamping rod; 401-Mounting groove; 41-Elastic rod; 42-Feeding clamping block; 43-Feeding clamping drive tube; 44-Groove; 45-Third reset component; 46-Push clamping seat; 47-Matching component; 471-Embedding part; 472-First drive part; 414-First transmission part; 415-Second transmission part;

[0106] 50 - Bracket; 500 - Connector;

[0107] 51-Operating component; 511-First component; 512-Second component; 513-Jaw resetting drive component; 514-Mounting part; 515-Mounting hole; 516-Limiting part; 517-Protrusion;

[0108] 52-Switching component; 521-First switching part; 522-Slide groove; 523-Stop component; 524-Recess;

[0109] 53-Linkage component; 54-Second offset component;

[0110] 62-Seat body; 63-First clutch element; 64-Second clutch element; 65-Guide post; 66-First guide surface; 67-Second guide surface; 68-Fourth reset element; 69-Upper rack;

[0111] 70-Lower rack; 71-Intermediate component; 72-Spring; 73-Guide pivot component; 74-Offset spring; 75-Guide component; 76-Pivot joint; 77-Force-receiving part; 78-Guiding part; 79-Anti-reverse part;

[0112] 80-First rotating arm; 81-Second rotating arm; 82-Third rotating arm; 83-Guide wall; 84-Blocking wall; 85-Pivot end; 86-Guiding channel; 87-Main channel; 88-Opening; 89-Passive channel;

[0113] 91-Clamping reset drive unit; 911-Connecting part; 912-Second switching part; 913-Second drive part;

[0114] 921-Mounting plate; 922-Fixed component; 93-First offset component;

[0115] 501-Stop part; 501a-Pivot; 502-Converter; 502a-Slide groove; 503-Transmission part; 503a-Drive part. Detailed Implementation

[0116] 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.

[0117] 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 of the clamp. "Proximal" and "posterior" refer to the part closer to the clinician, while "distal" and "anterior" refer to the part farther from the clinician. That is, the handle assembly is the proximal end, and the jaw assembly is the distal end. For example, the proximal end of a component refers to the end relatively closer to the handle assembly, and the distal end refers to the end relatively closer to the jaw assembly.

[0118] 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.

[0119] After the clamping action is completed, the clamp delivery drive mechanism needs to automatically reset to its initial position to prepare for the next clamp delivery action. However, in actual use, if unexpected situations occur with the clamping forceps, such as the jaws gripping overly hard tissue and causing the jaw area to jam, the clamp delivery drive mechanism may fail to automatically reset properly, affecting subsequent surgical procedures. An emergency reset mechanism can be used to forcibly reset the clamp delivery drive mechanism.

[0120] Although some solutions for setting up emergency reset mechanisms have emerged in the existing technology, the existing solutions often require multiple operation steps to reset the clamping drive mechanism, which is cumbersome and the overall structure of the emergency reset mechanism is relatively complex.

[0121] To address the technical problems in the prior art, this disclosure aims to provide a simple and easy-to-use reset mechanism that allows for manual reset of the clamping drive mechanism of the clamping pliers with a single operation of the operating component.

[0122] The technical concept of this disclosure in specific embodiments will be described in detail below with reference to the accompanying drawings.

[0123] The term "axial" as used herein refers to the length direction of the sleeve 35. The axis of the "clamp" is the axis of the sleeve 35. "Circumferential" refers to the circumferential direction around the axis. "First direction" refers to the direction from the distal end to the proximal end of the clamp, and "second direction" refers to the direction from the proximal end to the distal end of the clamp. In the various figures, the structure of the components to be shown in the figure is highlighted, and some structures may be omitted to clearly show the fit between the components.

[0124] Please refer to Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the structure of the clamp provided in some embodiments of this disclosure. Figure 2A-2B This is a schematic diagram of the clamping compartment provided in some embodiments of this disclosure. The clamping compartment 6 contains a plurality of clamps 22. Figure 3 This is a schematic diagram of the structure of a clip provided in some embodiments of this disclosure. Figure 4 This is a schematic diagram of the structure of a clamp provided in some embodiments of the present disclosure, wherein the wrench is in the open position and part of the clamp housing has been removed.

[0125] refer to Figure 1 This embodiment provides a clamp, such as a continuous clamping clamp, for applying clamps 22 to tissues or blood vessels. In terms of overall positional relationship, the clamp includes an operating component 1, a lever assembly 5 extending from the operating component 1, a transmission mechanism, a clamping chamber 6, and a jaw assembly 14 disposed at the distal end of the lever assembly 5.

[0126] Operating component 1 includes a main body and a wrench 4. The main body includes a housing, to which the wrench 4 is movably connected. The housing is divided into a head housing 2 and a handle housing 3 extending from the lower side of the head housing 2, and the handle housing 3 and the wrench 4 together form a handle assembly. The user can hold the handle housing 3 with one hand and pull or press the wrench 4 with their fingers, causing the wrench 4 to move relative to the main body, thereby driving the transmission mechanism to move in the second direction.

[0127] In this embodiment, the wrench 4 has forward and reverse movements, and the directions of the forward and reverse movements are opposite. The wrench 4 has an open position (e.g., Figure 1 The position of wrench 4 shown), the middle position (as shown) Figure 26 The position of wrench 4 shown) and the closed position (as shown) Figure 28 (The position of the wrench 4 is shown). Under the action of external force, after the wrench 4 moves forward from the open position, the free end of the wrench 4 can stay in the middle position near the handle housing 3. If the wrench 4 is pressed further, the wrench 4 will move forward from the middle position to the closed position. When the wrench 4 is in the closed position, when the wrench 4 is released, the wrench 4 will move backward from the closed position to the open position.

[0128] Please refer to Figure 1 , Figure 2A-2B A clamping chamber 6 is disposed on the shaft assembly 5. The proximal end of the clamping chamber 6 is connected to the main body of the operating assembly 1, and the distal end of the clamping chamber 6 is connected to the jaw assembly 14. Before clamping, the clamp 22 is placed in the clamping chamber 6. (Reference) Figure 2A The clamping chamber 6 contains multiple clamps 22, arranged sequentially from the far end to the near end of the clamping chamber 6, namely the first clamp, the second clamp, and so on, up to the Nth clamp. The first clamp is closest to the far end of the clamping chamber 6 and is fed into the jaw assembly 14 first. The clamps 22 other than the first clamp in the clamping chamber 6 are defined as other clamps. The clamping chamber 6 includes M workstations, arranged sequentially from the far end to the near end of the clamping chamber 6, namely the first workstation, the second workstation, ..., the Mth workstation. The first clamp is located at the foremost first workstation, and the second to Nth clamps are arranged sequentially at the second to Nth workstations. M ≥ 2, M ≥ N.

[0129] Please refer to Figure 3The clip 22 includes a first clamping arm 23, a second clamping arm 27, and a connecting portion 26 located between the first clamping arm 23 and the second clamping arm 27. The connecting portion 26 is flexible, allowing the first clamping arm 23 and the second clamping arm 27 to pivot relative to each other. One end of the first clamping arm 23 is connected to the connecting portion 26, and the other end is provided with two first ears 25, one on one side of the first clamping arm 23 and the other on the opposite side. One end of the second clamping arm 27 is connected to the connecting portion 26, and the other end is provided with an engaging portion 30, for example, a curved C-shaped hook. Near the engaging portion 30, the second clamping arm 27 is provided with two second ears 29, one on one side of the second clamping arm 27 and the other on the opposite side.

[0130] The size of the engaging portion 30 is larger than the distance between the two first ears 25, and the two first ears 25 have a certain elasticity and can deform. Thus, driven by external force, the first clamping arm 23 and the second clamping arm 27 approach each other, causing the engaging portion 30 to move between the two first ears 25. Under the action of the engaging portion 30, the two first ears 25 deform and engage the engaging portion 30 between the two first ears 25, so that the first clamping arm 23 and the second clamping arm 27 are fully clamped, thereby effectively clamping and stopping the bleeding of the blood vessels or tissues placed between the first clamping arm 23 and the second clamping arm 27.

[0131] refer to Figure 2A-2B The clamping chamber 6 includes a bottom 7 extending axially and opposing first and second side portions 8 and 9. When the clamp 22 is installed in the clamping chamber 6, it is compressed due to the size and internal space of the clamping chamber 6. Specifically, the first clamping arm 23 of the clamp 22 abuts against the first side portion 8, and the second clamping arm 27 abuts against the second side portion 9, such that the two clamping arms 23 and 27 are compressed but not compressed into a closed state, that is, the two clamping arms 23 and 27 of the clamp 22 are close to each other but not engaged.

[0132] Multiple abutment components are formed along the length of the bottom 7 of the clamping chamber 6, with one abutment component at each workstation. (Reference) Figure 2A Each abutment component includes a first transverse barb 11 and a second transverse barb 12. The first transverse barbs 11 are arranged in one row, and the second transverse barbs 12 are arranged in another row. The first transverse barbs 11 and the second transverse barbs 12 are arranged in two rows on the bottom 7. The first transverse barbs 11 are located near the first side 8, and the second transverse barbs 12 are located near the second side 9. Adjacent transverse barbs in each row are arranged at equal intervals along the axial direction. Each transverse barb extends from the bottom 7 of the clamping chamber 6 toward the distal end of the clamping chamber 6 and is inclined toward the inward direction of the clamping chamber 6. That is, the proximal end of each transverse barb is connected to the bottom 7, and the distal end is movable. In this embodiment, the transverse barb is an elastic piece with the distal end raised. The distal end of each transverse barb is an inclined end 13.

[0133] Combination Figure 2A , Figure 2B and Figure 3 When the first transverse barb 11 of each abutting component abuts against the first ear 25 of the clamp 22 from behind, the second transverse barb 12 abuts against the second ear 29 of the same clamp 22 from behind. Specifically, when the inclined end 13 of the first transverse barb 11 engages a first ear 25, the inclined end 13 of the second transverse barb 12 engages a second ear 29 on the same side as the first ear 25. Thus, each abutting component prevents the clamp 22 from moving from the current station to an adjacent proximal station in the clamping chamber 6.

[0134] As the clamp 22 moves forward axially, it slides into contact with the front transverse barb, pressing the barb towards the bottom 7. This allows the clamp 22 to pass smoothly through the barb, enabling it to move from the current workstation to the adjacent, far-end workstation. Specifically, as the clamp 22 moves forward axially, its first clamping arm 23 slides past the first transverse barb 11 in front of it, while its second clamping arm 27 slides past the second transverse barb 12 in front of it. This causes both the first and second transverse barbs 11 to bend towards the bottom 7, allowing the clamp 22 to pass smoothly through both barbs and enter the adjacent, far-end workstation.

[0135] In order to apply multiple clamps 22 continuously, the clamping pliers need to perform three actions: the clamping action performed by the clamping drive mechanism, the jaw closing action (clamping action) performed by the jaw drive mechanism, and the clamping action performed by the clamp pushing drive mechanism.

[0136] Reference Figure 1 and Figure 4 The transmission mechanism includes a clamp feeding drive mechanism, a jaw drive mechanism, and a clamp pushing drive mechanism. In response to the wrench 4 moving from the open position to the intermediate position, the clamp feeding drive mechanism moves in a second direction, driving the first clamp from the clamping chamber 6 into the jaw assembly 14. In response to the wrench moving from the intermediate position to the closed position, the jaw drive mechanism drives the jaw assembly 14 to close, causing the clamp 22 in the jaw assembly 14 to close, applying the clamp 22 to tissue or blood vessel. Figure 5B As shown, when the wrench 4 is in the closed position, the push-clamp blocks 31 of each push-clamp drive mechanism are located on the rear side of the second to Nth clamps, respectively. In response to the wrench 4 moving from the closed position to the open position, the multiple push-clamp blocks 31 move forward to drive the second to Nth clamps forward by one station, respectively.

[0137] After the clamping action is completed, the clamp delivery drive mechanism moves along the first direction and automatically resets to prepare for subsequent clamp delivery actions. Releasing the wrench 4 resets it to the open position, and the jaw drive mechanism moves along the first direction and automatically resets to open the jaws of the jaw assembly 14, completely releasing the clamp 22. However, in case of unexpected situations with the clamping forceps, such as the jaws clamping excessively hard tissue causing the jaws and / or cannula 35 to jam, the clamp delivery drive mechanism may fail to automatically reset properly, affecting subsequent surgical procedures.

[0138] Based on this, this disclosure provides a reset mechanism for manually resetting the clamping drive mechanism. In the event of an unexpected situation with the clamping clamp, if the clamping is completed but the clamping drive mechanism fails to reset automatically, the clamping drive mechanism is positioned at the distal end of its initial position. For example... Figure 8 and Figure 8A As shown, the reset mechanism includes an operating member 51, a switching member 52, and a clamping reset drive member 91. The switching member 52 includes a first switching part 521. The clamping reset drive member 91 is connected to the operating member 51 and includes a second switching part 912 and a second drive part 913. The second switching part 912 is located at the distal end of the first switching part 521 and is separate from the first switching part 521. The clamping drive mechanism is provided with a first drive part 472 that cooperates with the reset mechanism. The clamping clamp has a first state and a second state. In the first state, the axial projections of the second drive part 913 and the first drive part 472 do not overlap. In the second state, the axial projections of the second drive part 913 and the first drive part 472 at least partially overlap. When the operating member 51 is not driven by an external force and is held in its initial position, the second drive part 913 is in its initial position, at which time the axial projections of the second drive part 913 and the first drive part 472 do not overlap, and the clamping clamp is in the first state.

[0139] After clamping is completed, if the clamping drive mechanism fails to automatically reset, an external force is manually applied to the operating member 51 to move it in the first direction. The operating member 51 drives the clamping reset drive member 91 to move in the first direction. After the second switching part 912 moves to engage with the first switching part 521, the first switching part 521 drives the second driving part 913 to move towards the clamping drive mechanism through the second switching part 912, so that the projection of the second driving part 913 and the first driving part 472 in the axial direction at least partially overlaps. That is, the first switching part 521 and the second switching part 912 cooperate to make the second switching part 912 rotate, causing the second driving part 913 to move towards the clamping drive mechanism, and the clamping clamp switches from the first state to the second state. When the second drive unit 913 moves proximally to engage with the first drive unit 472 and the operating member 51 continues to drive the clamping reset drive unit 91 to move along the first direction, the second drive unit 913 drives the clamping drive mechanism to move along the first direction via the first drive unit 472, causing the clamping drive mechanism to move proximally to its initial position, thus completing the manual reset of the clamping drive mechanism. The manual reset process of the clamping drive mechanism only requires one operation of the operating member 51, making it simple to operate and convenient to use. Furthermore, this reset mechanism simplifies the existing complex component structure, resulting in a simple overall structure.

[0140] It should be noted that the descriptions of the specific structures of the clamping drive mechanism, jaw drive mechanism, push clamp drive mechanism, reset mechanism, and stop member in the following embodiments are merely exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0141] The clamp feeding drive mechanism drives the clamp 22 into the jaw assembly 14 (clamp feeding action), the jaw drive mechanism drives the jaw assembly 14 to move, and the clamp pushing drive mechanism drives the other clamps in the clamping chamber 6 to move forward one position (clamp pushing action). The wrench 4 drives the transmission mechanism to move, thereby driving the clamp feeding drive mechanism, the jaw drive mechanism, and the clamp pushing drive mechanism to move, so that the clamp feeding drive mechanism performs the clamp feeding action, the jaw drive mechanism performs the jaw closing action (clamping action), and the clamp pushing drive mechanism performs the clamp pushing action.

[0142] refer to Figure 4 The jaw drive mechanism includes a jaw drive tube 32 and a sleeve 35. The jaw drive tube 32 is housed within the head housing 2 of the operating assembly 1. The sleeve 35 is fitted onto the outside of the clamping chamber 6 and also forms part of the lever assembly 5. The proximal end of the sleeve 35 connects to the jaw drive tube 32, and the distal end of the sleeve 35 engages with the jaw assembly 14. In response to the wrench 4 moving from the intermediate position to the closed position, the jaw drive tube 32 moves distally to drive the sleeve 35 distally, thereby driving the jaw assembly 14 (identified in the diagram). Figure 1 )closure.

[0143] The jaw drive mechanism also includes a first reset member 36. The first reset member 36 is disposed within the head housing 2 of the clamping jaws and sleeved outside the jaw drive tube 32. The proximal end of the first reset member 36 abuts against a baffle 34 on the outer surface of the jaw drive tube 32, and the distal end abuts against the inner wall of the support 50. The first reset member 36 stores energy when the jaw drive mechanism advances, and releases this energy upon restoring its deformation, thereby providing power for the jaw drive mechanism to reset and retract. In other words, the first reset member 36 enables the automatic reset of the jaw drive mechanism after the clamping action. For example, the first reset member 36 can be a spring.

[0144] like Figure 4 and Figure 5A As shown, the jaw assembly includes a first jaw arm 15 and a second jaw arm 16, respectively pivotally connected to the distal end of the clamping chamber 6. A second reset element, for opening the jaws, is located between the first jaw arm 15 and the second jaw arm 16; for example, the second reset element is a spring. Figure 4 and Figure 5B As shown, when the jaw drive tube 32 drives the sleeve 35 to move distally, the jaw assembly can be at least partially housed within the sleeve 35 from its distal end, causing the jaw assembly to close. At this time, the second reset member between the two jaw arms 15 and 16 is compressed, and the first reset member 36 is also compressed. After clamping is completed, under the action of the first reset member 36, the sleeve 35 moves proximally, the jaw assembly extends from the distal end of the sleeve 35, and the second reset member releases energy to open the jaw assembly.

[0145] refer to Figures 5A-5B The shaft assembly 5 also includes a base 37, which has high rigidity. Part of the base 37 is disposed within the sleeve 35, and part is disposed within the head housing 2. The base 37 is installed on the outer side of the bottom 7 of the clamping chamber 6. (Reference) Figure 2A and Figure 2B The clip 22, the first side 8 of the clamping compartment 6 and the second side 9 of the clamping compartment 6 are all located inside the bottom 7. The inside and outside refer to the two sides of the plane where the bottom 7 is located.

[0146] refer to Figure 4 , Figures 5A-5B , Figures 6A-6BThe clamping drive mechanism includes a clamping assembly and a clamping drive tube 43. The clamping drive tube 43 is partially located within the jaw drive tube 32 and moves axially within it. The proximal end of the clamping assembly is connected to the clamping drive tube 43. In response to the forward movement of the wrench 4 from the open position, the clamping drive tube 43 moves distally to drive the clamping assembly to move distally, causing the clamping assembly to drive the clamp 22 from the clamping chamber 6 into the jaw assembly. The base 37 has a guide groove 38 for receiving the clamping assembly and allowing its axial movement. The distal end of the guide groove 38 has a guide surface 39, which is an inclined surface and angled to the axial direction. When the base 37 is installed in the clamping chamber 6, the guide surface 39 faces distally and is inclined towards the clamping chamber 6. The bottom 7 of the clamping chamber 6 has an inlet 10 corresponding to the guide surface 39.

[0147] The clamping drive mechanism also includes a third reset element 45, for example, a spring. (See reference) Figure 7 The inner wall of the jaw drive tube 32 is provided with a raised rib 33. The distal end of the third reset member 45 abuts against the raised rib 33 of the jaw drive tube 32, and the proximal end abuts against the distal end face of the clamping drive tube 43. The third reset member 45 is used to store energy when the clamping drive mechanism moves forward, and releases the energy when the third reset member 45 recovers its deformation, thereby providing power for the clamping drive mechanism to reset and retract. Therefore, the automatic reset of the clamping drive mechanism after the clamping action can be realized by the third reset member 45.

[0148] refer to Figures 5A-5B , Figures 6A-6B and Figure 6E The clamping assembly includes a clamping rod 40, an elastic rod 41, and a clamping block 42. The proximal end of the clamping rod 40 is connected to the clamping drive tube 43, the distal end of the clamping rod 40 is connected to the proximal end of the elastic rod 41, and the distal end of the elastic rod 41 is connected to the clamping block 42. The clamping rod 40 is highly rigid and not easily deformed, thus preventing it from bending during axial movement within the guide groove 38 and causing obstruction of the clamping assembly.

[0149] refer to Figures 5A-5B , Figures 6A-6B When the clamping drive tube 43 is driven to move in the second direction, it drives the clamping rod 40 to move distally, causing the elastic rod 41 and the clamping block 42 to also move distally. At this time, the third reset member 45 deforms. When the elastic rod 41 moves distally until the clamping block 42 abuts against the guide surface 39, the elastic rod 41 begins to bend. The clamping block 42 enters the clamping chamber 6 from the inlet 10 at the clamping chamber 6 at an angle along the guide surface 39, between the first clamp and the second clamp, and abuts against the rear end of the first clamp to push it forward into the jaw assembly 14.

[0150] After the clamp 22 is clamped in the jaw assembly, the clamping block 42 at the distal end of the elastic rod 41 continues to abut against the clamp 22 from the rear end of the clamp 22 to prevent the clamp 22 from moving proximally (i.e., backward) during clamping. The jaw assembly closes, causing the clamp 22 to close and clamp the tissue, thus completing the clamping action. The jaw assembly is then opened to disengage the clamp 22 from the jaw assembly, thus completing the release of one clamp. After the jaw assembly closes, the clamping assembly moves along the first direction under the action of the third reset member 45. The clamping rod 40 moves axially towards the proximity (along the first direction) in the guide groove 38, driving the elastic rod 41 and the clamping block 42 to retract from the inlet 10 into the guide groove 38 along the guide surface 39. The clamping rod 40 drives the clamping drive tube 43 to move along the first direction, and the entire clamping drive mechanism automatically resets to its initial position.

[0151] refer to Figure 4 , Figure 5B and Figure 6B The push-clamp drive mechanism includes a push-clamp seat 46. The proximal end of the push-clamp seat 46 is located inside the feed drive tube 43, and the other part of the push-clamp seat 46 extends distally and is disposed inside the sleeve 35. The base 37 is mounted on one side of the clamping chamber 6, and the push-clamp seat 46 is disposed on the opposite side of the clamping chamber 6. The push-clamp seat 46 can move axially within the feed drive tube 43.

[0152] refer to Figures 5A-5B , Figures 6A-6B For each of the M workstations corresponding to the clamping chamber 6, the pusher seat 46 is provided with M side cavities at intervals, and each side cavity is provided with a pusher block 31. Each pusher block 31 is connected to the pusher seat 46 by a spring 72. The spring 72 provides a force to the pusher block 31 to rotate outward toward the side cavity, specifically causing the distal end of the pusher block 31 to extend out of the side cavity and tilt toward the clamp 22. In response to the pusher seat 46 advancing axially to its distal end, the distal end of each pusher block 31 abuts against and pushes a clamp 22 forward, causing the clamp 22 to move axially toward its distal end, and the clamp 22 smoothly passes through the first transverse barb 11 and the second transverse barb 12 (see...). Figure 2A This causes the clamp 22 to move from its current position to an adjacent, more distant position. Consequently, the pusher 46 pushes the other clamps (clamps 22 other than the first clamp) in the clamping chamber 6 forward one position. As the pusher 46 retracts axially towards the proximal end, the clamp 22 cannot retract due to the action of the first transverse barb 11 and the second transverse barb 12. This causes the pusher 31 to come into contact with the clamp and be squeezed by the clamp 22, rotating into the side cavity. Thus, the pusher 31 retracts proximally along the side of the clamp 22, avoiding the clamp 22, thereby preventing the pusher 31 from dragging the clamp 22 towards the proximal end during retraction.

[0153] The following is combined Figures 7A-7E The specific explanation covers the cooperation process between the clamping drive mechanism and the clamp during the clamping process and the clamping reset process. Figure 7AThis is a partial schematic diagram of the clamping drive mechanism. Figure 7B and Figure 7C These are partial schematic diagrams of the clamping drive mechanism at different angles and the clamps within the jaw assembly. Figure 7D This is a partial schematic diagram of the clamping drive mechanism in the closed state of the jaw assembly. Figure 7E This is a partial structural diagram of the jaw assembly in the closed state and the clamping drive mechanism resetting.

[0154] The clamp also includes a stop assembly. The stop assembly is connected to the clamp feeding drive mechanism, so that it can move under the drive of the clamp feeding drive mechanism. For example, the stop assembly is connected to the clamp feeding rod 40 of the clamp feeding drive mechanism.

[0155] like Figure 7A As shown, the stop assembly includes a stop portion 501 connected to the clamping drive mechanism. The stop portion 501 can move under the drive of the clamping drive mechanism. Figure 7B As shown, the stop portion 501 is located within the jaw assembly and opens the clamps within the jaw assembly. Specifically, the stop portion 501 enters between the first clamping arm 23 and the second clamping arm 27 of the clamp, and the stop portion 501 abuts against the first ear portion 25 and the second ear portion 29, thereby opening the clamps and ensuring that the clamps are in the open state when in the ready position. This ensures that the two clamping arms of the clamps can unfold from the compressed state in the clamp box to restore their open shape, thereby overcoming the problem that the clamps retain their compressed shape after being pushed out, which affects their use.

[0156] like Figure 7A As shown in one example, the shape of the adapter clip is adapted to the shape of the clip. There are four stops 501 in total, divided into upper and lower groups. Each group includes two stops 501 arranged side by side. The two stops 501 in the upper group are used to abut against the two ends of the first ear 25; the two stops 501 in the lower group are used to abut against the two ends of the second ear 29.

[0157] Furthermore, the stop assembly also includes a transmission unit. The stop portion 501 is connected to the clamping drive mechanism via the transmission unit. Specifically, the transmission unit is connected to the clamping rod 40 of the clamping drive mechanism, and the two stop portions 501 in each group are connected to the transmission unit.

[0158] In some embodiments, the stop portion 501 is pivotally connected to the clamp feeding drive mechanism via a transmission unit. Thus, when the stop portion 501 opens the clamp and the jaw drive mechanism closes the jaw assembly, the stop portion 501 can rotate around the pivot point, thereby maintaining the state of constraint on the clamp and not affecting the jaw assembly closing the clamp.

[0159] The transmission unit includes a conversion component 502 and a transmission component 503 connected to each other. The conversion component 502 is pivotally connected to the stop portion 501, and the transmission component 503 is used to receive the power transmitted by the clamping rod 40. Specifically, the conversion component 502 has two sliding grooves 502a, the length direction of which is consistent with the arrangement direction of the two clamping arms of the clamp. The two stop portions 501 in each group are connected as one unit and have a pivot 501a. The two pivots 501a are respectively set in a sliding groove 502a. Thus, when the jaw drive mechanism closes the jaw assembly, and the two clamping arms of the clamp close, the two stop portions 501 in each group rotate around their pivots 501a, thereby maintaining the state of constraint on the clamp and not affecting the closing of the jaw assembly.

[0160] In other embodiments, the stop 501 may be configured to be elastic, so that when the jaw drive mechanism closes the jaw assembly, the stop 501 can deform accordingly, thereby not affecting the jaw assembly's closing of the clamp. In other embodiments, the stop 501 may be configured to be elastic, and the stop 501 is pivotally connected to the clamp feeding drive mechanism.

[0161] In other embodiments, when the clamping drive mechanism is in the retracted state, the stop portion 501 is at least partially located within the jaw assembly. Before the clamping drive mechanism begins to perform the clamping action, the stop portion 501 is already at least partially located within the jaw assembly, so that when the clamp is pushed into the jaw assembly, the stop portion 501 begins to constrain and guide the two clamping arms of the clamp, allowing the two clamping arms of the clamp to open smoothly.

[0162] The stroke of the clamping drive mechanism during the clamping process is defined as the clamping stroke. In some embodiments, the clamping stroke includes a first stroke and a second stroke. The clamping drive mechanism is configured such that, in the first stroke, the clamping drive mechanism can push the clamp at the farthest end of the clamp box to move relative to the stop 501, so that at the end of the first stroke, the first ear 25 and the second ear 29 of the clamp move to the outside of the stop 501, causing the clamp to be opened by the stop 501; in the second stroke, the clamping rod 40 can drive the stop 501 and the clamp to move synchronously.

[0163] Through the above methods, during the clamping process, the clamping drive mechanism first drives the clamp to move to the outside of the stop 501 and is opened by the stop 501. Then, while keeping the clamp open by the stop 501, the clamp and the stop 501 move together. In this way, on the one hand, it ensures that the clamping action is not hindered by the stop 501 when it is started, improving the ease of operation; on the other hand, during the second stroke, the clamp is always kept between the stop 501 and the jaw assembly arm, ensuring that the clamp is in an open state before the jaw assembly closes.

[0164] like Figure 7A and Figure 7BAs shown, the clamping drive mechanism includes a first transmission part 414 and a second transmission part 415 disposed on the clamping rod 40. The first transmission part 414 and the second transmission part 415 are arranged axially spaced apart. Of the first transmission part 414 and the second transmission part 415, the first transmission part 414 is closer to the proximal end of the clamping rod 40. In some embodiments, the positions of the drive part 503a and the transmission part described above can be interchanged.

[0165] The transmission component 503 is connected to the clamping rod 40. The transmission component 503 can be housed within the sleeve of the jaw drive mechanism. The transmission component 503 is provided with a drive part 503a. The drive part 503a is located between the first transmission part 414 and the second transmission part 415; and when the clamping drive mechanism is in the retracted state, the axial distance between the drive part 503a and the first transmission part 414 is equal to the first stroke.

[0166] During the clamping process, the clamping rod 40 first drives the clamp to move relative to the stop part 501 and advance by a first stroke. At this time, the first transmission part 414 moves forward until it abuts against the drive part 503a. After the first transmission part 414 abuts against the drive part 503a, the clamping rod 40 drives the clamp forward and also drives the stop assembly forward together. The distance advanced is the second stroke, so that the clamp enters the ready position within the jaw assembly. Figure 7B and Figure 7C As shown.

[0167] like Figure 7D As shown, when the jaw assembly is closed, the two clamping arms are locked after the clamp is closed, while the stop part 501, being elastic or rotatable, does not affect the closure of the clamp.

[0168] The reset stroke of the clamping drive mechanism also includes a first reset stroke and a second reset stroke. After clamping is completed, the clamping rod 40 will be reset under the action of the third reset member 45. During this process, the clamping rod 40 first retracts independently, during which the position of the stop assembly remains unchanged, and retracts until the second transmission part 415 abuts against the drive part 503a. Figure 7E The process of (the state) is the first reset stroke. Figure 7E In the state where the second transmission part 415 abuts against the drive part 503a, under the action of the third reset member 45, the feed clamp 40 drives the stop assembly to move backward together, so that the stop part 501 separates from the jaw assembly.

[0169] When the jaws clamp excessively hard tissue, causing the stop assembly at the jaws to jam, it does not affect the first reset stroke of the clip delivery drive mechanism. After the first reset stroke ends, when the clip delivery rod 40 moves along the first direction to the second transmission part 415 abutting against the drive part 503a, if the clip delivery rod 40 continues to reset proximally, the jamming of the stop assembly will prevent the clip delivery drive mechanism from continuing the second reset stroke normally. This will prevent the clip delivery drive mechanism from automatically and completely resetting, affecting subsequent surgical operations. At this time, the clip delivery rod 40 is in a partially reset state. In this partially reset state, by employing the reset mechanism of this disclosure, when the operating member 51 is operated to drive the clamping reset drive member to move along the first direction, the second transmission part 415 moves along the first direction to abut against the drive part 503a; after the operating member is operated to drive the clamping reset drive member to continue moving along the first direction until the second switching part engages with the first switching part, the projections of the second drive part and the first drive part overlap in the axial direction, and then when the operating member continues to move along the first direction, the second drive part drives the clamping rod 40 to continue moving proximally through the first drive part, and the clamping rod 40 moves proximally together with the stop assembly to complete the second reset stroke, so that the clamping drive mechanism is fully reset.

[0170] As mentioned above, the clamping pliers include a transmission mechanism. The wrench 4 drives the transmission mechanism to move, causing the clamping drive mechanism to perform the clamping action, the jaw drive mechanism to perform the clamping action, and the pushing drive mechanism to perform the pushing action.

[0171] The transmission mechanism also includes a switching mechanism and a coupling mechanism. The following section will use... Figure 4 Using the placement direction and angle of the clamp as a reference, the structure and principle of the switching mechanism will be explained in more detail:

[0172] refer to Figure 4 , Figure 4A and Figure 4B and Figure 7 The switching mechanism includes a base 62, a first clutch 63, a clutch switching mechanism, and a second clutch 64. The base 62 has a first oblong hole and a second oblong hole, which are arranged opposite each other along a direction perpendicular to the plane of the paper (to...). Figure 7 (The placement angle of the clamp is for reference). The first clutch 63 is housed in the base 62, and the second clutch 64 is the far end face of the base 62.

[0173] The clamping drive tube 43 is sleeved on the outside of the clamping seat 46. Part of the clamping drive tube 43 is located inside the jaw drive tube 32 and moves axially within the jaw drive tube 32. A circumferentially extending groove 44 is provided at the proximal end of the clamping drive tube 43. In the initial state, the seat body 62 is sleeved on the outside of the clamping drive tube 43, the bottom end of the first clutch member 63 is inserted into the groove 44, and the upper end of the first clutch member 63 is connected to the clutch switching mechanism.

[0174] The clutch switching mechanism includes a guide post 65 and a guide rail. The upper end of the first clutch member 63 is connected to the guide post 65. The guide rail is disposed inside the head housing 2, and the guide post 65 can move on the guide rail. The head housing 2 of the clamping clamp includes a first head housing and a second head housing (not labeled) arranged radially along the sleeve 35. The guide rails are symmetrically disposed on the inner walls of the first head housing and the second head housing 2. That is, the inner wall of the first head housing is provided with a guide rail, and the inner wall of the second head housing is also provided with a guide rail.

[0175] A guide post 65 is housed in a base 62. The guide post 65 has a first guide end and a second guide end. The first guide end of the guide post 65 extends from a first oblong hole and rests on a guide rail on the inner wall of the first head housing, and can move on the guide rail. The second guide end of the guide post 65 extends from a second oblong hole and rests on a guide rail on the inner wall of the second head housing, and can move on the guide rail. Each oblong hole extends vertically, allowing the guide post 65 to move vertically. The guide rail includes a first guide surface 66 and a second guide surface 67, with the second guide surface 67 being higher than the first guide surface 66.

[0176] The wrench 4 pushes against the seat 62, causing the seat 62 to move distally. The first clutch 63 then moves forward, driving the clamping drive mechanism distally to perform the clamping action. The guide post 65 moves along the guide rail following the movement of the first clutch 63. When the guide post 65 moves on the first guide surface 66, the first clutch 63 remains engaged with the clamping drive tube 43. Since the second guide surface 67 is higher than the first guide surface 66, when the guide post 65 moves to the second guide surface 67 of the guide rail, it causes the first clutch 63 to move upward, disengaging it from the groove 44 of the clamping drive tube 43 and separating it from the clamping drive tube 43, thereby disengaging the clutch mechanism from the clamping drive mechanism.

[0177] As the wrench 4 moves the clamping drive mechanism to the distal end via the switching mechanism, the second clutch 64 (the distal end face of the base 62) gradually approaches the proximal end face of the jaw drive tube 32. In response to the first clutch 63 disengaging from the clamping drive tube 43, the second clutch 64 abuts against the proximal end face of the jaw drive tube 32, engaging the clutch mechanism with the jaw drive mechanism. The second clutch 64 then pushes the jaw drive tube 32 to move, thereby driving the jaw drive mechanism to perform the jaw closing action.

[0178] One part of the mating mechanism is connected to the base 62, and the other part is connected to the proximal end of the push clamp seat 46. There is a distance between the two parts of the mating mechanism. When the clamp feeding drive mechanism moves forward, the push clamp drive mechanism moves backward to store energy. The clamp feeding action performed by the clamp feeding drive mechanism and the clamp pushing action performed by the push clamp drive mechanism are not synchronized.

[0179] refer to Figure 4 , Figure 4A and Figure 7 The mating mechanism includes an upper rack 69, an intermediate component 71, and a lower rack 70. The intermediate component 71 includes a first gear and a second gear. The upper rack 69 meshes with the first gear, and the lower rack 70 meshes with the second gear. The first gear and the second gear are coaxially arranged and rotate synchronously. A clamping drive tube 43 is drivably connected to the upper rack 69, and the clamping drive tube and the upper rack 69 move in the same direction. For example, as described above, a seat 62 is drivably connected to the clamping drive tube 43, and the seat 62 is connected to the upper rack 69. A pusher seat 46 is connected to the lower rack 70. The upper rack 69 and the lower rack 70 move in opposite directions; when the upper rack 69 moves distally, the lower rack 70 moves proximally. Both the upper rack 69 and the lower rack 70 are arranged axially, and the first gear and the second gear are disposed between the upper rack 69 and the lower rack 70. The push-clamp drive mechanism also includes a fourth reset member 68, one end of which is connected to the housing and the other end of which is connected to the proximal end of the lower rack 70. For example, the fourth reset member 68 is a spring.

[0180] The clamp also includes a backstop mechanism, which can abut against the clamping drive mechanism to prevent it from retracting when the first clutch 63 of the switching mechanism is disengaged from the clamping drive mechanism. When the wrench 4 is in the middle position, the user releases the wrench 4, and the backstop mechanism still abuts against the clamping drive mechanism to prevent it from retracting, as described later.

[0181] refer to Figure 4 , Figure 7 , Figure 9 and Figure 10 The anti-reverse mechanism includes a guide pivot 73 and a bias spring 74. The guide pivot 73 has a pivot portion 76. The pivot portion 76 is pivotally connected to the handle housing 3 via a first pivot axis, causing the guide pivot 73 to rotate relative to the handle housing 3 about the first pivot axis. The bias spring 74 provides a thrust to the guide pivot 73, causing the guide pivot 73 to tend to rotate clockwise. The guide pivot 73 is provided with an anti-reverse portion 79. The wrench 4 is movably connected to the guide pivot 73. During the movement of the wrench 4 from the open position to the intermediate position, the bias spring 74 pushes the guide pivot 73 to rotate, causing the anti-reverse portion 79 to approach and abut against the feed drive tube 43 to prevent it from retracting.

[0182] The guide pivot 73 also includes a force-receiving portion 77, a guiding portion 78, a first rotating arm 80 extending proximally from the pivot portion 76, and a second rotating arm 81 extending distally from the pivot portion 76. The guide pivot 73 further includes a third rotating arm 82 extending obliquely upward from the pivot portion 76, the third rotating arm 82 forming an obtuse angle with the first rotating arm 80. The end of the first rotating arm 80 is the force-receiving portion 77, the end of the second rotating arm 81 is the guiding portion 78, and the end of the third rotating arm 82 is the stop portion 79.

[0183] One end of the bias spring 74 abuts against the force-receiving part 77, and the other end abuts against the handle housing 3. The first rotating arm 80 and the second rotating arm 81 form a lever with the first pivot point of the pivot part 76 as the fulcrum. The bias spring 74 and the guide part 78 are located at both ends of the lever. When the bias spring 74 is in a compressed state, it applies a thrust to the force-receiving part 77, causing the guide pivot 73 to tend to rotate counterclockwise. That is, the anti-reverse part 79 and the guide part 78 also tend to rotate counterclockwise. Figure 4 (The placement angle of the clamps is for reference).

[0184] refer to Figure 4 The wrench 4 is provided with a pivot end 85 that is pivotally connected to the housing, and the wrench 4 can rotate about the pivot end 85. The wrench 4 also has a guide channel 86. (Reference) Figures 9-11 In this embodiment, the anti-reverse mechanism also includes a guide member 75, which is disposed in the guide portion 78 of the guide pivot member 73. At least a portion of the guide member 75 is housed in the guide channel 86. When the wrench 4 rotates about its pivot end 85, the guide channel 86 rotates accordingly, and the guide member 75 rotates about the first pivot axis 76 of the pivot portion 76 under the action of the bias spring 74. The guide channel 86 is a closed channel surrounded on all sides, and the movement of the guide member 75 in all directions within the guide channel 86 is restricted, preventing it from leaving the guide channel 86. Therefore, in this embodiment, the guide member 75 cannot disengage from the wrench 4.

[0185] refer to Figure 11-12 The guide channel 86 includes a starting point a, a stop point b, and an end point c. The distances from the starting point a to the pivot end 85 of the wrench 4 and from the end point c to the pivot end 85 of the wrench 4 are both less than the distance from the stop point b to the pivot end 85 of the wrench 4. That is, the position of the stop point b is higher than the starting point a and the end point c.

[0186] The guide channel 86 includes a main channel 87 and a secondary channel 89 extending from an opening 88 of the main channel 87, the opening 88 being located between the two ends of the main channel 87. The secondary channel 89 extends from the opening 88 of the main channel 87 in a direction away from the pivot end 85 of the wrench 4, that is, the distance between the secondary channel 89 and the pivot end 85 is greater than the distance between the main channel 87 and the pivot end 85. The main channel 87 has a starting point a and an ending point c at its two ends. A stop point b is located within the secondary channel 89. A bias spring 74 applies a force to the guide pivot 73, causing the guide 75 to disengage from the main channel 87 and enter the secondary channel 89.

[0187] When the wrench 4 is in the open position, the guide 75 is at the starting point a. During the movement of the wrench 4 from the open position to the intermediate position, the wrench 4 drives the guide 75 to rotate clockwise from the starting point a and rise upwards into the channel 89 under the action of the bias spring 74, then moves within the channel 89 to the stop point b. When the wrench 4 moves from the intermediate position to the closed position, the wrench 4 drives the guide 75 to move downwards from the stop point b in the channel 89 to the end point c of the main channel 87. When the guide 75 enters the channel 89, the guide pivot 73 rotates upwards, causing the stop portion 79 of the guide pivot 73 to move upwards.

[0188] refer to Figure 12 The channel 89 includes a blocking wall 84. The main channel 87 includes a first wall extending from the starting point a to connect with the blocking wall 84, the first wall and the blocking wall 84 forming a right angle or an acute angle. Thus, through the simple angle design of the guide channel 86, the blocking wall 84 can effectively prevent the guide 75 from retracting from the stop point b back to the starting point a, so that the wrench 4 stays in the middle position.

[0189] To enable the guide member 75 to move from the stop point b to the end point c, the channel 89 also includes a guide wall 83. The main channel 87 also includes a second wall extending from the end point c to connect with the guide wall 83, the second wall forming an obtuse angle with the guide wall 83. This simple angular design of the guide channel ensures that the guide member 75 can move from the stop point b to the end point c.

[0190] refer to Figure 9 , Figure 11 and Figure 12 When the user presses the wrench 4, the wrench 4 moves from the open position to the middle position. When the guide 75 moves from the starting point a to the stop point b, the guide 75 enters the secondary channel 89 from the main channel 87. The guide pivot 73 rotates upward and lifts up. At this time, the first clutch 63 separates from the clamping drive tube 43, and the second clutch 64 abuts against the jaw drive tube 32. At this time, the clamping pliers are in the clamping completed state, the clamp 22 is in the ready position, and the stop part 79 moves up to abut against the clamping drive tube 43 to prevent it from moving backward.

[0191] As the user continues to press the wrench 4, the wrench 4 moves from the middle position, causing the guide 75 to move from the stop point b to the end point c. The guide 75 continues to move through the channel 89, the guide pivot 73 does not move downwards, and the stop 79 remains in contact with the clamping drive tube 43 to prevent the clamping drive tube 43 from retracting. This ensures that the clamping block 42 abuts against the clamp 22 at its proximal end, preventing the clamp 22 from retracting during clamping and thus guaranteeing clamping stability. During this process, the second clutch 64 abuts against the jaw drive tube 32, and the switching mechanism drives the jaw drive mechanism to move distally to perform the jaw closing action (clamping action).

[0192] When the user continues to press the wrench 4, and the wrench 4 reaches the closed position, causing the guide 75 to move from the stop point b along the channel 89 to the end point c in the main channel 87, the stop part 79 moves to below the clamping drive tube 43, and the stop part 79 separates from the clamping drive tube 43. The clamping drive tube 43 then retracts and resets under the action of the third reset member 45. When the guide 75 reaches the end point c, the clamping pliers are in the clamping completed state, and the clamp 22 held in the jaw assembly 14 is compressed to the closed state. When the wrench 4 is released, the jaw drive mechanism resets under the action of the first reset member 36, the switching mechanism resets under the action of the fourth reset member 68, and the wrench 4 resets under the drive of the switching mechanism.

[0193] like Figure 7 , Figure 8 and Figure 8A As shown, a mounting groove 401 is provided on the outer side of the feed clamp 40, and a mating component 47 is provided in the mounting groove 401. The mating component 47 includes an insert portion 471 embedded in the mounting groove 401 and a first driving portion 472 protruding outward from the outer side of the feed clamp 40. The first driving portion 472 is ratchet-shaped. The mating design of the mating component 47 and the feed clamp 40 can avoid making significant changes to the existing production process of the feed clamp 40. It is only necessary to open the mounting groove 401 on the outer side of the existing feed clamp 40 and mate the mating component 47 with the mounting groove 401. Furthermore, the insert portion 471 and the mounting groove 401 can be fixed by welding, bonding or other methods. In another alternative embodiment, the first driving portion 472 can also be integrally formed with the feed clamp 40, or the first driving portion 472 can also be fixed to the outer side of the feed clamp 40 in other ways.

[0194] like Figure 7 , Figure 8 and Figure 8A As shown, the operating element 51 is a reset button located on the distal side of the head housing 2. A cavity is formed inside the operating element 51, through which the sleeve 35 and the clamping rod 40 at least partially pass. The clamping reset drive 91 and the switching element 52 are both located inside the operating element 51. The clamping reset drive 91 is a rod-shaped reset drive rod. The first drive unit 472 is located inside the cavity. Therefore, the operating element 51 does not occupy space in the operating assembly and has no impact on the internal structural design of the operating assembly.

[0195] The clamping reset drive 91 also includes a connecting part 911, which is a rotating shaft. The clamping reset drive 91 is rotatably connected to the operating member 51 via the connecting part 911. Figure 13 , Figure 13A and Figure 14An example configuration of the connection between the clamping reset drive 91 and the operating member 51 is shown. The operating member 51 has two mounting portions 514 on its inner wall, each with at least one mounting hole 515. Two mounting plates 921 are mounted on each mounting portion 514, respectively located on both sides of the clamping reset drive 91. The two mounting plates 921 are fixed to the two mounting portions 514 by multiple fasteners 922. The two ends of the connecting portion 911 are located in the space formed between the mounting plates 921 and the mounting base on both sides, allowing the clamping reset drive 91 to rotate relative to the operating member 51 around the connecting portion 911. The clamping reset drive 91 and the operating member 51 are axially fixed, and the clamping reset drive 91 can be driven by the operating member 51 to move along a first direction and a second direction. The fasteners 922 are, for example, pins, screws, rivets, etc., passing through the mounting holes 515. The inner wall of the operating member 51 is also provided with two limiting parts 516, which are respectively provided on both sides of the clamping and resetting drive member 91, so that the clamping and resetting drive member 91 will not have a lateral movement relative to the operating member 51. Figure 13A The movement in the vertical direction (in the center) prevents the clamping reset drive 91 from swaying to both sides during rotation, which helps improve the stability of the clamping reset drive 91 and ensures that when manual reset is required, the clamping reset drive 91 can be accurately aligned and engaged with the first drive part 472 after rotation. The connection method between the clamping reset drive 91 and the operating part 51 in this embodiment is only an example. Other connection methods can be used, as long as the clamping reset drive 91 can rotate relative to the operating part 51 and the clamping reset drive 91 and the operating part 51 are axially fixed. For example, in an alternative embodiment, a rotating shaft can be fixedly provided on the inner wall of the operating part 51, the clamping reset drive 91 is provided with a hole sleeved on the outside of the rotating shaft, and the clamping reset drive 91 can rotate relative to the rotating shaft. In some embodiments, the number of limiting parts can be one or more.

[0196] like Figure 8 and Figure 8A As shown, the second switching part 912 is disposed on the proximal end side of the connecting part 911, and the second driving part 913 is the proximal end of the clamping and resetting driving member 91. Figures 16-18As shown, the reset mechanism also includes a first biasing member 93, configured to apply a biasing force to the clamping reset drive member 91, causing the second drive part 913 to move away from the clamping drive mechanism, thereby holding the clamping clamp in the first state. Here, the first biasing member 93 is a torsion spring sleeved on the outside of the connecting part 911. One end of the torsion spring abuts against the clamping reset drive member 91, and the other end abuts against the operating member 51 or the mounting plate 921, so that when the clamping reset drive member 91 is not abutting against the first switching part 521, the second drive part 913 is held in a high position relatively far from the clamping rod 40. When the second drive part 913 is held in the high position, it does not obstruct the movement of the first drive part 472 along the first and second directions. Therefore, during the clamping action and normal automatic reset process of the clamping drive mechanism, the second drive part 913 will not act on the first drive part 472, and thus will not affect the normal functioning of the clamping drive mechanism.

[0197] When the first switching part 521 and the second switching part 912 abut against each other to overcome the biasing force of the first biasing member and drive the clamping reset drive 91 to rotate clockwise ( Figure 8A (From a medium-angle perspective), the clamp switches from the first state to the second state. The second drive unit 913 moves to a low position relatively close to the feed bar 40, and the first biasing member 93 is driven to undergo elastic deformation. When the second drive unit 913 moves to the low position, its axial projection overlaps with that of the first drive unit 472. After the second drive unit 913 moves along the first direction to the position of the first drive unit 472, it engages with the first drive unit 472. After the first switching unit 521 separates from the second switching unit 912, under the biasing force of the first biasing member 93, the second drive unit 913 returns to a high position relatively far from the feed bar 40, without interfering with the first drive unit 472; that is, the axial projections of the second drive unit 913 and the first drive unit 472 do not overlap.

[0198] In this disclosure, after the first half of the repositioning stroke is completed, the clamping rod 40 is in a partially repositioned state. At this time, only one pull of the operating member 51 towards the proximal end is needed to achieve the effect of engaging the second drive unit 913 with the first drive unit 472 and driving the first drive unit 472 towards the proximal end to fully reposition the clamping rod 40. Therefore, only one operation of the operating member 51 is needed to complete the repositioning of the clamping drive mechanism. Furthermore, the axial travel space of the operating member 51 is equal to the axial travel of the second switching unit 912 during state switching plus the partial repositioning stroke of the second half of the clamping rod 40. The overall axial travel space of the operating member 51 is relatively short, eliminating the need to increase the axial travel space of the operating member. This also avoids the corresponding shortening of the outer sleeve due to the increase in the axial travel space of the operating member, ensuring sufficient surgical space and eliminating the need to redesign and re-mold the external structure of the clamping forceps.

[0199] like Figure 23 As shown, the reset mechanism also includes a second biasing member 54, configured to apply a biasing force to the operating member 51, causing it to move in a second direction. Here, the second biasing member 54 is a spring disposed between the switching member 52 and the operating member 51. When an external force is applied to the operating member 51 to cause it to move in a first direction, the operating member 51 moves relative to the switching member 52 in the first direction, causing the second biasing member 54 to undergo elastic deformation. After the operating member 51 is released, under the biasing force of the second biasing member 54, the operating member 51 can return to its initial position when it is not subjected to external force.

[0200] The structures of the first bias member 93 and the second bias member 54 described above are merely examples. In other embodiments, the first bias member and / or the second bias member may also adopt other elastic structures, such as other types of springs, sheet springs, etc.

[0201] like Figure 8A , Figure 19 , Figure 20 and Figure 22 As shown, the feed rod 40 is at least partially located inside the sleeve 35, and the side wall of the sleeve 35 has a first opening 351. The feed rod 40 moves to a position where the first drive part 472 is opposite to the first opening 351 (opposite in a direction perpendicular to the axial direction, for example, in...). Figure 8A When the first drive portion 472 is exposed to the first opening 351 (when they are opposite each other in the vertical direction), the first drive portion 472 is exposed to the first opening 351 so that during a manual reset operation, the clamping reset drive member 91 can at least partially enter the first opening 351 and engage with the first drive portion 472. Figure 8A From the perspective of the first drive part 472, the top height of the first drive part 472 does not protrude beyond the inner wall height of the sleeve 35. Therefore, when the first drive part 472 is not opposite to the first opening 351, the first drive part 472 is accommodated in the internal cavity of the sleeve 35, and the first drive part 472 will not interfere with the inner wall of the sleeve 35, thus not affecting the relative movement of the feed rod 40 and the sleeve 35.

[0202] like Figure 8A As shown, in this embodiment, the operating member 51 can also be used for manual reset of the jaw drive mechanism. When the jaw drive mechanism fails to automatically reset due to an unexpected event after the clamping action is completed, the jaw drive mechanism is located at the distal end of its initial position. A jaw reset drive member 513 is also provided on the inner circumferential surface of the operating member 51. A jaw reset mating member 353 is provided on the outer circumferential surface of the sleeve 35. The operating member 51 is manually driven to move along the first direction until the jaw reset drive member 513 engages with the jaw reset mating member 353. The operating member 51 continues to move along the first direction, and the jaw reset drive member 513 and the jaw reset mating member 353 remain in contact to drive the jaw drive mechanism to move along the first direction.

[0203] like Figure 8A , Figure 21 and Figure 27A As shown, the jaw reset drive 513 is a protrusion on the inner wall of the operating member 51, protruding axially relative to the inner wall of the operating member 51. The sleeve 35 has a second opening 352 on its side wall, and the jaw reset mating member 353 is the proximal side wall of the second opening 352. The jaw reset drive 513 is at least partially embedded in the second opening 352 and can move along the second opening 352 in a first direction. Therefore, when the sleeve 35 performs jaw closing action and normal automatic reset, the second opening 352 moves relative to the operating member 51, and the operating member 51 does not obstruct the axial movement of the sleeve 35. When the sleeve 35 cannot automatically reset to its initial position, the operating member 51 is manually driven, causing the jaw reset drive 513 to move along the first direction to the proximal end of the second opening 352, at which point the jaw reset drive 513 engages with the jaw reset mating member 353. In one operation of the operating component 51, the jaw reset drive component 513 first drives the sleeve 35 to reset, and then the clamping reset drive component 91 drives the clamping rod 40 and the stop assembly to begin resetting. Therefore, with the clamping rod 40 partially reset, the clamping drive mechanism, the stop assembly, and the jaw drive mechanism can be reset simultaneously through one operation of the operating component 51, making the operation very convenient.

[0204] like Figure 13 and Figure 15 As shown, the operating component 51 includes a first component 511 and a second component 512. The first component 511 and the second component 512 enclose the cavity described above. The clamping and resetting drive component 91 is fixed to the inner wall of the first component 511. Since the resetting drive component 91 engages with the switching component 52 before abutting against the clamping drive mechanism as the operating component 51 moves along the first direction, its required resetting stroke is also small. Based on this, there is no need to change the length of the operating component 51. The structure of the resetting drive component can be added to the inner wall of the existing operating component structure. Therefore, only a small amount of modification is needed based on the existing mold of the operating component. The advantage of this solution compared to the solution with a long axial stroke space of the operating component is that the modification to the existing mold of the operating component is small. There is no need to increase the length of the operating component 51, and the length of the sleeve 35 exposed to the outside will not be affected. Otherwise, if the length of the sleeve 35 exposed to the outside is reduced due to the increase in the length of the operating component 51, the length of the sleeve 35 must be increased accordingly, resulting in a large structural change to the entire clamping clamp.

[0205] The jaw reset drive 513 is fixed to the inner wall of the second component 512. The first component 511 and the second component 512 are respectively formed and assembled on the outside of the sleeve 35, making the manufacturing and assembly processes easier to implement. The clamping reset drive 91 and the jaw reset drive 513 are respectively disposed on two components, realizing the manual reset functions of the clamping drive mechanism and the jaw drive mechanism, respectively, without interfering with each other. The first opening 351 and the second opening 352 of the sleeve 35 can also avoid each other. When only the manual reset function of the clamping drive mechanism needs to be added to the clamping clamp, the second drive part 913 can be provided only in the first component 511, and the jaw reset drive 513 can be omitted from the second component 512. In another alternative embodiment, the clamping reset drive 91 and the jaw reset drive 513 can also be disposed on the same component, for example, both on the first component 511 or both on the second component 512. The first component 511 and the second component 512 are not limited to two parts that interlock vertically, but can also be two parts that interlock horizontally.

[0206] like Figure 8A , Figure 23 and Figure 24 As shown, the first switching part 521 is a guide slope provided on the switching member 52. The guide slope extends from the proximal end to the distal end and deviates from the clamping drive mechanism. The guide slope includes a first side that is farther away from the clamping drive mechanism and a second side that is closer to the clamping drive mechanism. The first side of the guide slope is located on the distal end side of the second side. Figure 8A (Left side of the middle). When the clamping reset drive 91 moves along the first direction to the point where the second switching part 912 engages with the first switching part 521, the second switching part 912 first contacts the first side of the first switching part 521, and under the oblique guidance of the first switching part 521, the second switching part 912 and the second drive part 913 move toward the direction closer to the clamping rod 40, and the clamping reset drive 91 rotates clockwise around the connecting part 911 ( Figure 8A (From the perspective of)

[0207] like Figures 23-25 As shown, the switching element 52 is mounted on the support 50 inside the operating element 51; in some embodiments, the switching element 52 and the support 50 are integrated. The operating element 51 is rotatable relative to the head housing 2 about the axis of the clamp, and the operating element 51, the switching element 52, the jaw drive mechanism, the clamp delivery drive mechanism, the clamp chamber 6, and the push clamp seat 46 are relatively fixed in the circumferential direction. Therefore, by manually rotating the operating element 51, the switching element 52, the jaw drive mechanism, the clamp delivery drive mechanism, the clamp chamber 6, and the push clamp seat 46 can be driven to rotate about the axis of the clamp simultaneously, thereby adjusting the angle of the jaw assembly relative to the tissue or blood vessel without affecting the normal functioning of the jaw drive mechanism and the clamp delivery drive mechanism.

[0208] like Figure 24 and Figure 25 As shown, the surface of the switching member 52 is provided with a groove 522, and the operating member 51 is provided with a protrusion 517. The protrusion 517 is at least partially embedded in the groove 522 and can move axially within the groove 522. Therefore, through the cooperation of the groove 522 and the protrusion 517, the switching member 52 and the operating member 51 are relatively fixed in the circumferential direction, and the operating member 51 can move axially relative to the switching member 52. Figure 25 As shown, the jaw drive tube 32 and the clamping drive tube 43 pass through the internal cavity of the operating member 51. The switching member 52, the jaw drive tube 32, the clamping drive tube 43, the clamping chamber 6, and the push clamp seat 46 are fixed relative to each other in the circumferential direction by a linkage 53. Optionally, the linkage 53 is a fixing pin that passes through the switching member 52, the jaw drive tube 32, the clamping drive tube 43, the clamping chamber 6, and the push clamp seat 46 simultaneously.

[0209] During use, if the operating component 51 is accidentally touched, for example, after the jaw assembly 14 and the shaft assembly 5 of the clamping forceps are inserted into the surgical channel, the operating component 51 will be subjected to external resistance from the surgical channel, causing the jaw drive mechanism and / or the clamp delivery drive mechanism to retract unexpectedly. If the jaw drive mechanism retracts unexpectedly, it may cause damage to the blood vessel, such as pulling on the blood vessel. In addition, if the clamp delivery drive mechanism retracts unexpectedly, on the one hand, it may cause the clamp delivery block 42 to detach unexpectedly from the tail of the clamp 22, and on the other hand, it may cause the stop assembly to retract unexpectedly, resulting in instability in the position of the clamp 22 in the jaw assembly, affecting the surgical outcome.

[0210] Therefore, to prevent the operating member 51 from moving in the first direction due to external resistance from the surgical channel after the jaw assembly 14 and the shaft assembly 5 of the clamp are inserted into the surgical channel, in some embodiments, the clamp further includes a stop 523 disposed in the housing and axially closer to the distal end of the clamp relative to the operating member 51, to prevent the end of the surgical channel from resisting the operating member 51, thereby preventing the operating member 51 from moving in the first direction due to resistance from the end of the surgical channel. Figure 23 and Figure 24 As shown, in some embodiments, a support 50 is provided, with its proximal end disposed in the housing to prevent axial movement of the support 50 relative to the housing. A connecting portion 500 is provided at the distal end of the support 50, and a stop 523 is connected to the support 50 via the connecting portion 500. In some embodiments, the stop 523 and the support 50 are integrally designed. The surgical channel includes, for example, a surgical instrument channel in open surgery or a surgical instrument channel in laparoscopic surgery. In some embodiments, the surgical channel includes a trocar. In some embodiments, the diameter of the stop 523 may be larger than the diameter at the inlet of the trocar to prevent the trocar from abutting against the operating member 51.

[0211] In some embodiments, the stop has a recess 524 in which the rod assembly 5 is at least partially received; in some embodiments, the stop 523 is annular and at least partially located inside the actuating member 51, with the distal end of the stop 523 protruding beyond the distal end of the actuating member 51 through a distal opening. The actuating member 51 is integrally disposed on the outside of the support 50 and is axially slidable relative to the support 50 so that when the actuating member 51 is manually driven proximally, it can move proximally relative to the support 50 to perform a reset action. The diameter of the stop 523 is smaller than the diameter of the distal end of the actuating member 51. In other embodiments, the diameter of the stop 523 is greater than or equal to the diameter of the distal end of the actuating member 51, which completely prevents the distal end of the actuating member 51 from abutting the end of the surgical channel. In some embodiments, the switching member 52 is also disposed on the support 50. In other embodiments, the switching member 52 and the support 50 may also be two independent components. In some embodiments, the housing is provided with two or more stops 523, and the stops 523 are evenly arranged in the circumferential direction.

[0212] The following details the working process of the clamping jaw's transmission mechanism in performing the clamping, applying, and pushing actions, the automatic reset process after the clamping action, and the manual reset process when obstruction occurs during the automatic reset. In the following text, the clamping drive mechanism is defined as being driven to move between the initial position and the clamping completion position, and the jaw drive mechanism is defined as being driven to move between the initial position and the clamping completion position. The initial state of the reset mechanism refers to the state when the operating element is not subjected to external force.

[0213] When the wrench 4 is in the open position, multiple push clamps 31 are located in front of the second to Nth clamps, respectively. For example... Figure 8 and Figure 8A As shown, when the wrench 4 is in the open position, the clamping drive mechanism is in its initial position, the operating member 51 is not subjected to external force, the reset mechanism is in its initial state, and the first drive part 472 is located on the proximal side of the clamping reset drive member 91. Under the biasing force of the first biasing member 93, the first drive part 472 is in a high position relatively far away from the clamping drive mechanism. The second switching part 912 is located on the distal side of the first switching part 521 and does not engage with the first switching part 521. The jaw reset drive member 513 is located in the second opening 352 of the sleeve, and there is an axial gap between the jaw reset drive member 513 and the jaw reset mating member 353 to leave space for the subsequent movement of the sleeve 35 to the distal end. The first drive part 472 is located on the proximal side of the first opening 351 of the sleeve 35 and is not exposed to the first opening 351.

[0214] The user presses the wrench 4, causing it to move from the open position towards the center position. The wrench 4 pushes against the seat 62 of the switching mechanism, causing the switching mechanism to move further away. The guide post 65 moves on the first guide surface 66, and the first clutch 63 moves forward with the switching mechanism, driving the clamping drive mechanism to move further away in the second direction to perform the clamping action. At the same time, the upper rack 69 moves further away. During the movement of the upper rack 69 further away, the upper rack 69 drives the lower rack 70 to retract through the intermediate member 71. Since the lower rack 70 is connected to the push clamp seat 46, it drives the push clamp seat 46 to retract, causing the fourth reset member 68 to store energy, and the plurality of push clamp blocks 31 move closer to the side.

[0215] like Figure 26 As shown, when the wrench 4 reaches the middle position, the guide post 65 of the switching mechanism moves to the second guide surface 67 of the guide rail, the first clutch 63 separates from the clamping drive tube 43, the forward stroke of the clamping drive mechanism ends (clamping action completed), and the clamp 22 enters the jaw assembly 14. At the same time, the second clutch 64 abuts against the proximal end face of the jaw drive tube 32 to push the jaw drive tube 32 to move. The guide member 75 of the anti-reverse mechanism enters the secondary channel 89 from the main channel 87 of the guide channel 86, and the guide pivot 73 rotates upward and lifts, emitting a "click" sound to indicate to the user that the wrench has reached the middle position. At this time, the wrench 4 is released, and the wrench 4 remains in the middle position due to the blocking wall 84 of the guide channel 86. Under the action of the anti-reverse mechanism, the clamping block 42 of the clamping drive mechanism continues to abut against the clamp 22 from the rear end of the clamp 22, keeping the clamp 22 in the jaw assembly 14. Figure 6A and Figure 6B As shown, each push clamping block 31 moves to one side of the second to Nth clamps in the radial direction of the clamping chamber 6. For example, taking the push clamping block 31 located in front of the second clamp when the wrench 4 is in the open position as an example, that is... Figure 5A , 5B The farthest pushing clamping block 31 moves proximally to the side of the second clamp in the radial direction of the clamping chamber 6, where the two overlap radially in the clamping chamber 6, as shown. Figure 6A , 6B As shown, the pusher block 31 has not yet moved to the rear side of the second clamp. The radial direction of the clamping chamber 6 is perpendicular to the axial direction of the clamping chamber 6, and extends along the width direction of the clamping chamber. Figure 6A For example, the radial direction of the clamp 6 is perpendicular to the plane of the drawing.

[0216] like Figure 27 and Figure 27A As shown, after the clamping action is completed, the clamping drive mechanism reaches the clamping completion position, and the clamping rod 40 reaches its farthest position. The first drive unit 472 moves to the far end of the second drive unit 913. (Combined) Figure 8A and Figure 27ASince the reset mechanism is always in its initial, unforced state, the second drive unit 913 is held at a high position relatively far from the clamping drive mechanism and will not interfere with the first drive unit 472. The first drive unit 472 can smoothly pass through the gap below the second drive unit 913 without contacting it during the passage. Therefore, the reset mechanism will not affect the normal clamping action of the clamping drive mechanism. The relative position of the jaw reset drive unit 513 and the second opening 352 remains unchanged.

[0217] When the wrench 4 is in the middle position, pressing the wrench 4 causes it to move from the middle position toward the closed position. The anti-reverse mechanism gradually disengages from the clamping drive tube 43. Under the action of the wrench 4, the switching mechanism continues to push the jaw drive mechanism and the upper rack 69 forward. At the same time, the upper rack 69 continues to drive the lower rack 70 backward through the intermediate part 71. Since the lower rack 70 is connected to the push clamp seat 46, the push clamp seat 46 continues to backward. When the push clamp seat 46 backward, the fourth reset part 68 continues to store energy, and the jaw drive tube 32 drives the sleeve 35 forward to close the jaw assembly 14. Figure 28 As shown, when the wrench 4 reaches the closed position, the jaw assembly 14 closes (clamping action completed), the fourth reset member 68 finishes accumulating energy, the anti-reverse mechanism completely disengages from the clamping drive tube 43, and the clamping drive tube 43 is reset under the action of the third reset member 45. Figure 6C , 6D As shown, each push clamp block 31 moves proximally to the rear side of the second to Nth clamps. Taking the push clamp block 31 located in front of the second clamp when the wrench 4 is in the open position as an example, this push clamp block 31 moves to the rear side of the second clamp. When the wrench 4 is released, the jaw drive mechanism resets under the action of the first reset member 36, and the push clamp seat 46 moves forward under the action of the fourth reset member 68 to move the other clamps in the clamping chamber 6 forward by one position (the push clamping action is completed).

[0218] Figure 29 and Figure 29A This diagram illustrates the engagement state of the reset mechanism with the sleeve 35 and the feed rod 40 after the clamping action is completed but before the trigger is released. At this point, the jaw drive mechanism has reached the clamping completion position, and the sleeve 35 has reached its furthest position. (Combined with...) Figure 27A and Figure 29ADuring the clamping action of the sleeve 35, the second opening 352 moves distally relative to the jaw reset drive 513, and a certain gap remains between the jaw reset mating part 353 and the jaw reset drive 513 when the clamping action is completed. Therefore, the reset mechanism does not obstruct the movement of the sleeve 35 along the second direction and does not affect the normal implementation of the clamping action. After the clamping action is completed, if the clamping drive mechanism can automatically reset normally, the clamping drive mechanism resets to its initial position along the first direction under the action of the third reset member. Since the second drive part 913 is still held in a high position by the first biasing member 93, the second drive part 913 does not obstruct the movement of the first drive part 472 along the first direction. The first drive part 472 passes through the gap below the second drive part 913 and returns to its initial position. During this passage, the first drive part 472 and the second drive part 913 do not contact each other. Therefore, the reset mechanism does not affect the normal reset of the clamping drive mechanism. Figure 28 In the current state, when the trigger is released, the jaw drive mechanism automatically resets under the action of the first reset component. The sleeve 35 moves to its initial position relative to the jaw reset drive component 513. The axial distance between the jaw reset drive component 513 and the jaw reset mating component 353 increases, and the jaws of the jaw assembly open, thus completely releasing the clamp.

[0219] In practical applications, unexpected situations may occur when the clamping forceps malfunction, potentially causing the clamp delivery drive mechanism and jaw drive mechanism to fail to automatically and fully reset. For example, during automatic reset, when the trigger is released, the clamp delivery lever 40, under the action of the third reset component, first travels through the first reset stroke to reach the partially reset position. During the first reset stroke, the stop assembly does not move, and the jaws remain closed. If the jaw area unexpectedly jams at this point, the clamp delivery lever 40 will be unable to continue driving the stop assembly proximally, resulting in the clamp delivery drive mechanism not fully resetting. At this time, the clamp delivery lever 40 is still in an intermediate position between its initial position and the clamping completion position, and the cannula 35 is still at the distal end of its initial position. Because the jaws cannot fully open, the clamp cannot be released from the jaws, posing a risk of pulling on the blood vessel. Therefore, manual reset of the clamp delivery drive mechanism and jaw drive mechanism is required. Figure 30A The diagram shows the reset mechanism in its initial state before manual reset. When the operating member 51 is not subjected to external force, the reset mechanism remains in its initial state. The clamping reset drive member 91 does not engage with the first switching part 521 or the first drive part 472, and the jaw reset drive member 513 does not engage with the jaw reset mating member 353. The first opening 351 of the sleeve 35 is located on the distal side of the first drive part 472, which is housed within the internal cavity of the sleeve 35 and is not exposed to the first opening 351.

[0220] When both the clamping drive mechanism and the jaw drive mechanism fail to automatically and completely reset simultaneously, such as Figure 31 and Figure 31A As shown, an external force is manually applied to the operating member 51 to move it in the first direction. The operating member 51 drives the clamping and resetting driving member 91 to move in the first direction, and the second biasing member 54 (shown in...) Figure 23 The jaws are compressed and undergo elastic deformation. The jaw reset drive 513 moves in the second opening 352 until it engages with the jaw reset mating part 353. The drive operation 51 continues to move along the first direction, and the jaw reset drive 513 drives the sleeve 35 to move along the first direction through the jaw reset mating part 353 to reset, realizing the manual reset of the jaw drive mechanism. The first drive part 472 is exposed to the first opening 351 opposite to it. The clamping reset drive 91 moves to the second switching part 912 and engages with the first switching part 521. The first switching part 521 applies pressure to the second switching part 912 to move it in the direction of the clamping drive mechanism, causing the clamping reset drive 91 to rotate clockwise around the connecting part 911. Figure 31A (From the perspective of the first bias member 93, the first bias member 93 is twisted and undergoes elastic deformation, the second drive part 913 moves downward, and the second drive part 913 at least partially enters the first opening 351 to engage with the first drive part 472, that is, the first switching part 521 abuts against the second switching part 912 to overcome the biasing force of the first bias member 93 to switch the clamp to the second state.

[0221] The clamping reset drive 91 continues to move along the first direction via the operating member 51. The second drive unit 913 drives the clamping rod 40 to move along the first direction via the first drive unit 472 to reset. The clamping rod 40 drives the stop assembly to move towards the proximal end, completing the second reset stroke of the clamping drive mechanism, thereby realizing the manual reset of the clamping drive mechanism. Releasing the operating member 51, under the biasing force of the second biasing member 54, the operating member 51 drives the clamping reset drive 91 to move along the second direction, the operating member 51 resets, the second switching unit 912 separates from the first switching unit 521, and under the biasing force of the first biasing member 93, the clamping reset drive 91 rotates counterclockwise. Figure 31A (From a medium perspective), the clamp reset drive 91 is reset.

[0222] The reset mechanism provided in this embodiment can realize the manual reset of the clamping drive mechanism, the stop assembly, and the jaw drive mechanism. However, in practical applications, this manual reset function is not executed every time. For example, when both the clamping drive mechanism and the jaw drive mechanism can automatically reset normally, there is no need to operate the reset mechanism for manual reset, and the reset mechanism always remains in the initial state. When only the clamping drive mechanism cannot automatically reset normally, while the jaw drive mechanism has already automatically reset normally, an external force is manually applied to the operating member 51 to make it move in the first direction. The operating member 51 drives the clamping reset drive member 91 to move in the first direction. Since the sleeve 35 has been reset to its initial position, the jaw reset drive member 513 will not engage with the jaw reset mating member 353, and therefore will not act on the sleeve 35. At this time, the first drive part 472 is exposed to the first opening 351. After the clamping reset drive member 91 moves to the point where the second drive part 913 engages with the first drive part 472, the clamping reset drive member 91 continues to move in the first direction to drive the clamping drive mechanism to manually reset.

[0223] If only the jaw drive mechanism fails to automatically reset, while the feed drive mechanism has already automatically reset, an external force is manually applied to the operating member 51 to move it in the first direction. The jaw reset drive member 513 moves to engage with the jaw reset mating member 353 and drives the jaw reset mechanism to manually reset. The feed reset drive member 91 moves to engage with the second switching member 52 and the first switching member 52. The second drive part 913 moves towards the feed rod 40. However, since the first drive part 472 has already reset to its initial position, the second drive part 913 will not engage with the first drive part 472 and therefore will not act on the feed rod 40.

[0224] Therefore, by adopting this reset mechanism, if any one of the clamp feeding drive mechanism, the stop assembly, or the jaw drive mechanism fails to automatically reset, or if all three fail to automatically reset, only one operation of the operating component 51 is needed to manually reset the clamp feeding drive mechanism, the stop assembly, and / or the jaw drive mechanism, without operating other components, making the operation very convenient. This structure also simplifies the cooperation between the various components in the reset mechanism, resulting in a simple overall structure that has little impact on the overall size of the clamping device, and simplifies the manufacturing process.

[0225] In actual surgery, jamming in the jaw area is an emergency. There are various reasons for jaw jamming, such as jamming caused by the jaw drive mechanism (e.g., cannula), jamming caused by the clip delivery drive mechanism (e.g., clip delivery block), or jamming caused by the stop assembly (e.g., stop section). With existing clamping devices, after discovering jamming in the jaw area, the surgeon often needs time to determine the specific cause and take appropriate repositioning actions. The one-button repositioning function of the operating device provided in this disclosure saves the surgeon time in determining the cause of jamming and avoids the cumbersome steps of selecting different operating methods based on the specific cause. Therefore, the one-button three-stage repositioning function is essential, simplifying the operation and improving the surgeon's efficiency in handling emergencies.

[0226] Figures 32-35 This is a schematic diagram of a reset mechanism according to some embodiments of the present disclosure. Figures 32-35 The embodiments are the same as those described above. Figures 1-31 The difference in the embodiment is that the clamping reset drive 91 is at least partially elastic. When the second switching part 912 of the clamping reset drive 91 is not engaged with the first switching part 521, the second drive part 913 is held at a position relatively far away from the clamping drive mechanism under its own force, and the clamp is in the first state, not obstructing the clamping drive mechanism from performing clamping action and normal automatic reset. When manual reset is required, the clamping reset drive 91 moves along the first direction until the first switching part 521 acts on the second switching part 912, at least partially elastically deforming the clamping reset drive 91, causing the second drive part 953 to move toward the clamping drive mechanism, so that the second drive part 953 engages with the first drive part 472, and the clamp switches to the second state. After the first switching part 521 separates from the second switching part 912, the elastic deformation restoring force of the clamping reset drive 91 itself causes the second drive part 913 to return to a position relatively far away from the clamping drive mechanism.

[0227] The clamping and resetting drive component 91 can undergo elastic deformation under stress, and after the bending force disappears, it can recover its original shape and size under the action of elastic deformation restoring force. Furthermore, the clamping and resetting drive component 91 has a certain rigidity; after the second drive part 913 engages with the first drive part 472, it has sufficient rigidity to drive the first drive part 472. The clamping and resetting drive component 91 can be made of an inherently elastic material, fabricated as a single layer or multiple layers, and its thickness can be designed according to the required elasticity and rigidity. Alternatively, the clamping and resetting drive component 91 can also be made of ordinary material, and its elastic deformation capability can be achieved by designing it as a double-layered or multi-layered thin-walled structure.

[0228] Figures 32-35 The embodiments are the same as those described above. Figures 1-31The difference between the embodiments also lies in the structure of the clamping reset drive 91 and the connection method between the clamping reset drive 91 and the operating member 51. The clamping reset drive 91 includes a connecting part 911, a second switching part 912, and a second drive part 913. The inner wall of the operating member 51 is provided with a cylindrical mounting part 514, and the center of the mounting part 514 is provided with a mounting hole 515. The connecting part 911 of the clamping reset drive 91 is provided with an opening, and a fixing member 922 passes through the opening of the connecting part 911 and is installed in the mounting hole 515. The fixing member 922 is, for example, a fixing pin, screw, rivet, etc. The inner wall of the operating member 51 is also provided with two limiting parts 516, which are located on both sides of the clamping reset drive 91, respectively, to limit the lateral displacement of the clamping reset drive 91, ensuring that when the clamping drive mechanism needs to be manually reset, the second drive part 913 can be accurately aligned and engaged with the first drive part 472. Figure 36 This is a partial cross-sectional schematic diagram of the clamp according to some embodiments of this disclosure. The difference between this embodiment and the previous embodiments is that the first drive unit 472 includes multiple ratchet teeth (two or more) arranged sequentially in the axial direction. The structure of the first drive unit 472 ensures that the clamping drive mechanism can be reset through this reset mechanism when the clamping rod 40 is in various different states and cannot be reset normally. After clamping is completed, when the clamping rod 40 reaches its farthest position without automatic reset, the drive operating member 51 moves along the first direction. The first switching part 521 and the second switching part 912 abut against and drive the second drive unit 913 to move. The second drive unit 913 moves towards the clamping rod 40 and engages with the proximal ratchet of the first drive unit 472. In response to the operating member 51 continuing to move along the first direction, the second drive unit 913 can drive the clamping rod 40 to be completely reset through the first drive unit 472. That is, the clamping rod 40 is driven by the operating member 51 to sequentially complete the first reset stroke and the second reset stroke. After the clamping is completed, the clamping rod 40 moves proximally under the action of the third reset member to complete the first reset stroke. When the jaws become stuck and the second reset stroke cannot continue, the drive operating member 51 moves along the first direction. The first switching part 521 and the second switching part 912 abut against each other and drive the second driving part 913 to move. The second driving part 913 moves toward the clamping rod 40 and engages with the distal ratchet of the first driving part 472. In response to the operating member 51 continuing to move along the first direction, the clamping rod 40 can be driven to continue to complete the second reset stroke. In some embodiments, the first driving part 472 may also be a groove; in some embodiments, the number of grooves is multiple (two or more) and they are arranged at intervals along the axial direction.

[0229] Figure 37 and Figure 38This is a partial schematic diagram of a clamping and resetting mechanism according to some embodiments of this disclosure. The difference between this embodiment and the previous embodiments is that the first biasing member 93 is configured to apply a biasing force to the clamping and resetting drive member 91, causing the second drive portion 913 to approach the clamping and driving mechanism. The second switching portion 912 is disposed on the side of the clamping and resetting drive member 91 near the clamping and driving mechanism. Figure 37 As shown, when the reset mechanism is in its initial state, the switching member 52 abuts against the switching part of the clamping reset drive member 91 to keep the axial projections of the second drive part 913 and the first drive part 472 from overlapping; the first switching part 521 abuts against the second switching part 912 and is closer to the clamping drive mechanism than the rotation center of the clamping drive member; as Figure 38 As shown, when the clamping drive mechanism fails to automatically reset, an external force is manually applied to the operating member 51 to move it in the first direction. The operating member 51 drives the clamping reset drive member 91 to move in the first direction. In response to the movement of the clamping reset drive member 91, the rotation center of the clamping reset drive member 91 gradually approaches the first switching part 521. The second switching part 912 rotates, causing the second drive part 913 to move toward the clamping drive mechanism. That is, under the biasing force of the first biasing member 93, the switching member 52 guides the second switching part of the clamping reset drive member 91 to rotate, causing the second drive part 913 to move toward the clamping drive mechanism, so that the projection of the second drive part 913 and the first drive part 472 in the axial direction at least partially overlaps. That is, the movement of the second switching part 912 makes the contact force less than the biasing force to switch the clamping clamp to the second state.

[0230] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this disclosure and should not be construed as limiting the specific implementation of this disclosure to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this disclosure, and all such modifications and substitutions should be considered within the scope of protection of this disclosure.

Claims

1. A clamping pliers, characterized in that, It includes a jaw assembly, a bar body assembly, a housing, a clamping drive mechanism, and a reset mechanism; The shaft assembly is connected to the housing, the jaw assembly is connected to the distal end of the shaft assembly, and the clamping drive mechanism is configured to drive the clamp into the jaw assembly; The clamping drive mechanism is provided with a first drive unit; The reset mechanism includes an operating component and a clamping reset drive component. The clamping reset drive component is connected to the operating component and includes a second drive unit. The clamping forceps have a first state and a second state; In the first state, the projections of the second driving part and the first driving part in the axial direction do not overlap; In the second state, the projections of the second driving part and the first driving part in the axial direction at least partially overlap. In response to the movement of the operating member along the first direction, thereby driving the clamping reset drive member to move and switch the clamping clamp from the first state to the second state, the second drive part abuts against the first drive part, and the operating member drives the clamping drive mechanism to move proximally along the axial direction through the clamping reset drive member to achieve the reset of the clamping drive mechanism.

2. The clamping pliers according to claim 1, characterized in that, The reset mechanism further includes a first switching part; the clamping reset drive further includes a second switching part; in the first state, in response to the operation member driving the clamping reset drive to move, the first switching part and the second switching part cooperate to make the second switching part rotate, causing the second drive part to approach the clamping drive mechanism and thus the clamping clamp switches to the second state.

3. The clamping pliers according to claim 2, characterized in that, The clamping reset drive is rotatably connected to the operating member; the first switching part is separated from the second switching part and the second switching part is located at the distal end of the first switching part; in response to the operating member driving the clamping reset drive to move, the second switching part engages with the first switching part to drive the second drive part to move toward the clamping drive mechanism.

4. The clamping pliers according to claim 3, characterized in that, The reset mechanism further includes a first biasing member, and the clamping reset drive member is held in the first state by the first biasing member; in response to the movement of the clamping reset drive member, the first switching part abuts against the second switching part to overcome the biasing force of the first biasing member so that the clamping clamp switches to the second state.

5. The clamping pliers according to claim 4, characterized in that, The first biasing member is configured to apply a biasing force to the clamping reset drive member to move the second drive portion away from the clamping drive mechanism in order to hold the clamping clamp in the first state.

6. The clamping pliers according to claim 2, characterized in that, The clamping reset drive is rotatably connected to the operating member; the second switching part is disposed on the side of the clamping reset drive near the clamping drive mechanism; the first switching part abuts against the second switching part and is closer to the clamping drive mechanism relative to the rotation center of the clamping drive; in response to the movement of the clamping reset drive, the rotation center of the clamping drive gradually moves closer to the first switching part, and the second switching part rotates, causing the second drive part to move toward the clamping drive mechanism.

7. The clamping pliers according to claim 6, characterized in that, The reset mechanism further includes a first biasing member, and the clamping reset drive is held in the first state by the cooperation of the first biasing member and the first switching part; in the first state, in response to the movement of the clamping reset drive, the rotation center of the clamping drive gradually approaches the first switching part, and the second switching part rotates under the biasing force of the first biasing member to switch the clamping clamp to the second state.

8. The clamping pliers according to claim 7, characterized in that, The first biasing member is configured to apply a biasing force to the clamping reset drive member to bring the second drive portion closer to the clamping drive mechanism, and the first switching portion abuts against the second switching portion to apply an abutting force to move the second drive portion away from the clamping drive mechanism, so as to hold the clamping clamp in the first state.

9. The clamping pliers according to claim 2, characterized in that, The clamping reset drive is at least partially elastic, and in response to the operation member driving the clamping reset drive to move, the clamping reset drive causes the second drive part to move toward the clamping drive mechanism due to its own elastic deformation.

10. The clamping pliers according to claim 2, characterized in that, The reset mechanism further includes a limiting part, which is configured to abut against the clamping reset drive member when the second drive part approaches the clamping drive mechanism, so as to guide the clamping reset drive member to rotate.

11. The clamping forceps according to any one of claims 3-5 or 9, characterized in that, The first switching part is a guide slope, which extends from the proximal end to the distal end and deviates from the clamping drive mechanism.

12. The clamping pliers according to claim 1, characterized in that, The clamp feeding drive mechanism includes a clamp feeding rod configured to push the clamp so that the clamp enters the jaw assembly, and the first drive part is configured to abut against the second drive part.

13. The clamping pliers according to claim 12, characterized in that, The first driving part is located on the outside of the feeding rod, and the first driving part protrudes outward or is recessed inward relative to the outside of the feeding rod.

14. The clamping pliers according to claim 1, characterized in that, The clamping pliers further include a stop assembly configured to open the clamps in the jaw assembly; the stop assembly is located at the distal end of the clamping drive mechanism, the stop assembly has a stop assembly drive part, and the clamping drive mechanism has a stop reset transmission part; in response to the movement of the operating member along a first direction, the stop reset transmission part moves along the first direction to abut against the stop assembly drive part to reset the stop assembly.

15. The clamping pliers according to claim 1, characterized in that, The clamping forceps also includes a stop; the jaw assembly and the shaft assembly are configured to be inserted into a surgical channel; the stop is disposed in the housing and is closer in the axial direction to the distal end of the clamping forceps than the actuating member; in response to the insertion of the jaw assembly and the shaft assembly into the surgical channel, the end of the surgical channel abuts against the stop to prevent the actuating member from being held by the surgical channel and moving in a first direction.

16. A clamping pliers, characterized in that, include: Jaw assembly, bar body assembly, housing, clamp feeding drive mechanism, jaw drive mechanism, reset mechanism, and stop; The shaft assembly is connected to the housing, the jaw assembly is connected to the distal end of the shaft assembly, the clamping drive mechanism is configured to drive the clamp into the jaw assembly, and the jaw drive mechanism is configured to drive the jaw assembly to close. The jaw assembly and the shaft assembly are configured to be inserted into a surgical channel; The reset mechanism includes an operating component and a reset driving component; In response to the movement of the operating member along the first direction, the reset driving member drives the clamping driving mechanism and / or the jaw driving mechanism to move along the first direction, thereby resetting the clamping driving mechanism and / or the jaw driving mechanism. The stop is disposed in the housing and is axially closer to the distal end of the clamp relative to the operating member; in response to the insertion of the jaw assembly and the shaft assembly into the surgical channel, the end of the surgical channel abuts against the stop to prevent the operating member from being held by the surgical channel and moving in a first direction.

17. The clamping pliers according to claim 16, characterized in that, The jaw drive mechanism includes a sleeve, and the jaw assembly closes in response to the sleeve moving distally.

18. The clamping pliers according to claim 16, characterized in that, The surgical access includes a puncture cannula.

19. The clamping pliers according to claim 18, characterized in that, The diameter of the stop is larger than the diameter at the entrance of the puncture cannula.

20. The clamping forceps according to claim 16, characterized in that, The stop has a recess, in which the rod assembly is at least partially accommodated.

21. The clamping pliers according to claim 20, characterized in that, The stop is ring-shaped.

22. The clamping pliers according to claim 16, characterized in that, The operating member has a proximal position and a distal position. In response to the operating member moving from the distal position to the proximal position, the clamping drive mechanism and / or the jaw drive mechanism are reset. When the operating member is in the distal position, the stop member is located at the distal end of the operating member.

23. The clamping pliers according to claim 16, characterized in that, The proximal end of the stop is located inside the operating member, and the distal end of the stop is located at the distal opening of the operating member.

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