Clip applier

Abstract

The clip applier comprises a shell, a clip bin, a stop assembly, a driving structure and a jaw assembly. The stop assembly comprises a stop piece and a transmission unit, the stop piece is movably arranged on the clamp arm, the transmission unit is connected with the clamp body assembly, the transmission unit comprises a moving assembly, the moving assembly is constructed to move in the axial direction of the clamp body assembly, and the moving assembly is connected to the stop piece; in response to movement of the forceps body assembly, the driving structure drives the moving assembly to move towards the far side so as to drive the stopping piece to move towards the far side to the restraining position; in response to continued movement of the caliper body assembly, the drive structure drives the moving assembly to move proximally to drive the stopper to move proximally to the disengaged position. The movement of the stopping piece towards the far side and the movement of the stopping piece towards the near side are both actively driven by the driving structure, the action reliability of the stopping piece is high, action errors caused by the fact that the stopping piece does not move in place are avoided, and the action reliability of the clip applier is high.

Description

Technical Field

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

[0002] During surgical procedures, it is necessary to ligate severed tissues or blood vessels to stop bleeding. A common method is to use clamps to apply clamps to the tissues or blood vessels.

[0003] A clamping forceps consists of a clamping chamber and an end effector. The clamping chamber stores clamps. A complete clamping process typically includes a clamping action and a clamping action. When using a clamping forceps, the forceps perform the clamping action to deliver the clamps stored in the clamping chamber to the end effector. The forceps then perform the clamping action to drive the end effector to close, causing the clamps in the end effector to close and clamp onto tissue or blood vessels, thereby blocking blood flow. After a complete clamping process, the internal motion units of the forceps must be reset before the forceps can perform the next clamping process. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this disclosure aims to provide a clamping clamp.

[0005] This disclosure is achieved through the following technical solution: a clamping pliers, including a housing, a clamping chamber, a stop assembly, a drive structure, and a jaw assembly; The clamping compartment is connected to the housing, and the clamping compartment includes a clamp, the clamp including a protrusion; The drive structure includes a clamp body assembly and a trigger. The clamp body assembly is movably connected to the housing. The clamp body assembly includes a clamping mechanism and a clamping mechanism. The trigger is movably connected to the housing. The trigger is configured to move relative to the housing to drive the clamping mechanism and the clamping mechanism to move. The jaw assembly includes a jaw arm movably connected to the clamping chamber, the jaw arm being configured to move relative to the clamping chamber under the drive of the clamping mechanism to close or open the jaw assembly; The stop assembly includes a stop member for constraining the protrusion and a transmission unit. The stop member is movably disposed on the clamp arm and has a constrained position and a disengaged position. The constrained position is located distal to the disengaged position. The transmission unit is connected to the clamp body assembly and includes a moving component and a conversion component. The moving component is connected to the stop member and is configured to move along the axial direction of the clamp body assembly. The clamping mechanism or the trigger cooperates with the conversion component, and the moving component cooperates with the conversion component. In response to the trigger action to drive the clamping mechanism to move distally so that the clamp enters the jaw assembly from the clamping chamber, the drive structure drives the moving assembly to move distally so that the stop moves distally to the restrained position. In response to the trigger continuing to move to drive the clamping mechanism to move distally so that the jaw assembly moves from the open state to the closed state, the drive structure drives the conversion member to move, so that the conversion member drives the moving assembly to move proximally so that the stop member moves proximally to the disengaged position.

[0006] For example, the conversion element is rotatably connected to the housing, the rotation axis of the conversion element is perpendicular to the axial direction of the clamp body assembly, the conversion element includes a first transmission part and a second transmission part, the first transmission part is located on one side of the rotation axis of the conversion element, the second transmission part is located on the other side of the rotation axis of the conversion element, the clamping mechanism or the trigger cooperates with the first transmission part, and the moving assembly cooperates with the second transmission part; In response to the trigger driving the clamping mechanism to move distally, the clamping mechanism and the components in the trigger that cooperate with the first transmission part drive the conversion member to rotate, so that the conversion member drives the moving assembly to move proximally.

[0007] For example, the components of the clamping mechanism and the trigger that cooperate with the first transmission part are provided with a first push wall; In response to the trigger causing the clamping mechanism to move distally, the first pushing wall abuts against the first transmission part axially in the clamp body assembly to push the conversion member to rotate, thereby causing the moving assembly to move proximally to drive the stop member to move proximally.

[0008] For example, in response to the trigger causing the clamping mechanism to move distally, the first push wall abuts against the proximal side of the first transmission part to cause the conversion member to rotate.

[0009] For example, the transmission unit further includes a floating element disposed between the conversion element and the housing, the floating element being configured to provide the conversion element with a force axially protruding toward the clamp assembly along the rotation axis of the conversion element; When the first pushing wall abuts against the conversion member, the first pushing wall is inclined relative to the axial direction of the clamp body assembly and also inclined relative to the axial direction of the rotation axis of the conversion member; In response to the trigger causing the clamping mechanism to move distally, the first push wall abuts against the proximal side of the first transmission part, causing the conversion member to rotate, and the first transmission part slides relative to the first push wall, causing the conversion member to move away from the clamp body assembly along its rotation axis.

[0010] For example, in response to the trigger causing the clamping mechanism to move distally, the switching member rotates and moves axially along its rotation axis, causing the first transmission part to slide relative to the first push wall until the switching member disengages from the first push wall; In response to the trigger driving the clamping mechanism to continue moving distally, the switching member remains stationary relative to the housing, so that the stop member remains stationary relative to the clamp arm.

[0011] For example, the first transmission part includes a plurality of first teeth, which are arranged circumferentially along the conversion member; The clamping mechanism that cooperates with the conversion element is provided with a plurality of second teeth, which are arranged along the axial direction of the clamp body assembly; or, the trigger that cooperates with the conversion element is provided with a plurality of second teeth, which are arranged sequentially around the rotation axis of the trigger; the second teeth have the first push wall. In response to the trigger causing the clamping mechanism to move distally, the first tooth engages with the second tooth to drive the conversion member to rotate, and the first push wall of at least one of the second teeth abuts against the first tooth.

[0012] For example, in response to the trigger causing the clamping mechanism to move distally, the first tooth engages with the second tooth to drive the conversion member to rotate until all the second teeth disengage from the first tooth; In response to the trigger driving the clamping mechanism to continue moving distally, the switching member remains stationary relative to the housing, so that the stop member remains stationary relative to the clamp arm.

[0013] For example, the transmission unit further includes a floating element disposed between the conversion element and the housing, the floating element being configured to provide the conversion element with a force axially protruding toward the clamp assembly along the rotation axis of the conversion element; On the conversion member, a plurality of the first teeth are arranged sequentially along the circumference of the conversion member on a conical surface with the rotation axis of the conversion member as the central axis; And / or, On the clamping mechanism that cooperates with the conversion member, a plurality of second teeth are arranged sequentially along the axial direction of the clamp body assembly on an inclined surface that is axially inclined relative to the rotation axis of the conversion member and parallel to the axial direction of the clamp body assembly; or, on the trigger that cooperates with the conversion member, a plurality of second teeth are arranged sequentially around the rotation axis of the trigger on a conical surface with the axis of the trigger as the central axis.

[0014] For example, the second transmission unit is movably connected to the moving component; In response to the trigger driving the clamping mechanism to move distally, the conversion member rotates, causing the second transmission unit to pull the moving component to move proximally.

[0015] For example, the second transmission unit includes a mating shaft parallel to the rotation axis of the conversion member, and the moving assembly has a mounting groove in which the mating shaft is received so that the second transmission unit is rotatably connected to the moving assembly; In response to the trigger causing the clamping mechanism to move distally, the conversion member rotates such that the mating shaft abuts against the proximal inner wall of the mounting groove, thereby causing the moving assembly to move proximally.

[0016] For example, the moving component includes a reset member and a connecting member, the reset member cooperating with the conversion member, and the connecting member being connected to the stop member; One of the connector and the reset member includes a first mating part, and the other includes a second mating part. The first mating part and the second mating part are configured to enter or disengage as the clamp body assembly moves. In response to the trigger driving the clamping mechanism to move distally, the connecting member moves distally to drive the stop member to move from the disengaged position to the constrained position, and the first mating part and the second mating part are in an unmatting state; In response to the trigger driving the clamping mechanism to move distally, the jaw assembly closes, the reset member moves proximally, and the first mating part and the second mating part are in a mating state, so that the reset member drives the stop member to move proximally to the disengaged position through the connecting member.

[0017] For example, the second mating part has a groove extending axially along the clamp body assembly, and the first mating part is received in the groove; In response to the trigger driving the clamping mechanism to move distally, the first mating part moves distally inside the groove, and the first mating part gradually approaches the distal inner wall of the groove; In response to the trigger causing the clamping mechanism to move distally, the reset member moves proximally, and the first mating part abuts against the distal inner wall of the groove, so that the reset member drives the stop member to move proximally through the connector.

[0018] For example, one of the clamping mechanism and the moving component includes a third mating part, and the other includes a fourth mating part; In response to the trigger causing the clamping mechanism to move distally, the third mating part engages with the fourth mating part, causing the moving component to move the stop from the disengaged position to the constrained position; in response to the trigger causing the clamping mechanism to continue moving distally, the third mating part disengages from the fourth mating part, and the clamping mechanism and the moving component slide relative to each other.

[0019] For example, the third mating part has a mating structure; In response to the trigger driving the clamping mechanism to move distally, the fourth mating part abuts against the mating structure to make the third mating part engage with the fourth mating part, so that the clamping mechanism drives the moving component to move distally to drive the stop member to move from the disengaged position to the constrained position; In response to the trigger continuing to drive the clamping mechanism to move distally, the fourth mating part disengages from the mating structure, thereby disengaging the third mating part from the fourth mating part, and the clamping mechanism slides relative to the moving component.

[0020] For example, the third mating part has a groove extending axially along the clamp body assembly, and the proximal inner wall of the groove is the mating structure; when the trigger is about to drive the clamping mechanism to move distally, the fourth mating part is accommodated in the groove; In response to the trigger driving the clamping mechanism to move to the distal side, the fourth mating part moves relative to the groove until the fourth mating part abuts against the mating structure; In response to the trigger driving the clamping mechanism to continue moving distally, the clamping mechanism and the moving component move distally synchronously under the abutment action of the fourth mating part and the mating structure until the stop member reaches the constraint position; In response to the trigger driving the clamping mechanism to continue moving distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the groove.

[0021] For example, the third mating part has a mating groove, and the proximal inner wall of the mating groove is the mating structure; In response to the trigger driving the clamping mechanism to move to the distal side, the fourth mating part is embedded in the mating groove, and the fourth mating part abuts against the mating structure, causing the moving component to drive the stop member to move from the disengaged position to the constrained position; In response to the trigger driving the clamping mechanism to continue moving distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the mating groove.

[0022] For example, in response to the trigger driving the clamping mechanism to move to the distal side, the fourth mating part and the mating groove move closer together until the fourth mating part is embedded in the mating groove; In response to the trigger driving the clamping mechanism to continue moving distally, the clamping mechanism and the moving component move distally synchronously under the engagement of the fourth mating part and the mating groove until the stop reaches the constraint position.

[0023] For example, the third mating part has a mating protrusion, and the distal surface structure of the mating protrusion is the mating structure; In response to the clamping mechanism moving to the distal side, the fourth mating part abuts against the mating structure, and the clamping mechanism and the moving component move to the distal side synchronously under the abutment action of the fourth mating part and the mating structure until the stop member reaches the constraint position; In response to the clamping mechanism continuing to move distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the mating protrusion.

[0024] For example, the fourth mating part includes an elastic arm and a clutch part, the clutch part being connected to the elastic arm and protruding toward the third mating part relative to the elastic arm, and the elastic arm being inclined toward the third mating part in the direction from the proximal side to the distal side; In response to the distal movement of the clamping mechanism, the clutch abuts against the engagement structure to cause the clamping mechanism and the moving component to move distally synchronously until the stop reaches the constraint position; In response to the continued distal movement of the clamping mechanism, the elastic arm deforms, causing the clutch portion to bypass the mating structure.

[0025] For example, there are two clamp arms configured to be close to each other to close the jaw assembly; there are two stops connected to the two clamp arms in a one-to-one correspondence; the clamp includes two protrusions, each stop constraining one of the protrusions. Attached Figure Description

[0026] Figure 1 A perspective view of the clamp in the clamping pliers provided for some specific embodiments of this disclosure; Figure 2 A perspective view of the clamps provided for some specific embodiments of this disclosure; Figure 3 for Figure 2 The front view of the clamping clamp after one side of the housing is hidden is shown, with the stop in the disengaged position and the clamp in the clamping chamber. Figure 4 for Figure 2 The front view of the clamping clamp after one side of the housing is hidden is shown, with the stop in the constrained position. Figure 5 for Figure 2 The front view of the clamping clamp after hiding one side of the housing is shown, with the clamp in the ready position and the stop in the constrained position. Figure 6 for Figure 2 The front view of the clamping pliers with one side of the housing concealed is shown, in which the jaw assembly is partially closed and the stop is in the disengaged position. Figure 7 for Figure 2 The front view of the clamping pliers is shown after one side of the housing is hidden, with the jaw assembly fully closed. Figure 8 for Figure 2 The diagram shows a partial cross-sectional view of the clamping device, in which the stop is in the disengaged position and the clamp is in the clamping chamber. Figure 9 for Figure 2 The diagram shows a partial cross-sectional view of the clamping pliers, in which the stop is in the disengaged position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section; Figure 10 for Figure 2 The diagram shows a partial cross-sectional view of the clamping pliers, in which the stop is in the constrained position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section; Figure 11 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the clamp in the ready position and the stop in the constrained position. Figure 12 for Figure 2 The diagram shows a partial cross-sectional view of the clamping pliers, in which the jaw assembly is partially closed and the stop is in the disengaged position. Figure 13 for Figure 2 The diagram shows a partial cross-sectional view of the clamping forceps, in which the jaw assembly is fully closed; Figure 14 for Figure 2 The diagram shows a three-dimensional view of the area where the clamping device is located, with the stop in the disengaged position and the clamp in the clamping chamber. Figure 15-Afor Figure 2 The diagram shows a three-dimensional view of the area where the conversion part of the clamping pliers is located, wherein the stop is located in the constrained position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section; Figure 15-B for Figure 15-A A three-dimensional schematic diagram of another angle of the area where the clamping clamp conversion device is located; Figure 16-A for Figure 2 The diagram shows a three-dimensional view of the area where the clamping pliers' conversion mechanism is located, in which the stop is in the disengaged position and the jaw assembly is partially closed. Figure 16-B for Figure 16-A A three-dimensional schematic diagram of another angle of the area where the clamping clamp conversion device is located; Figure 17-A for Figure 2 The diagram shows a three-dimensional view of the area where the clamping jaws are located, with the jaw assembly fully closed. Figure 17-B for Figure 17-A A three-dimensional schematic diagram of another angle of the area where the clamping clamp conversion device is located; Figure 18-A for Figure 2 The side view of the clamping drive tube, conversion component and reset component of the clamping clamp shown shows that the stop component is abnormally stuck and the clamping drive tube has not yet moved to the distal side. Figure 18-B for Figure 18-A The side view of the clamping drive tube, the conversion component and the reset component shown shows that the stop component is abnormally stuck and the clamping drive tube has moved a distance to the distal side. Figure 19 for Figure 2 The diagram shows a partial cross-sectional view of the clamping device, in which the stop is in the disengaged position and the clamp is in the clamping chamber. Figure 20 for Figure 2 The cross-sectional view of a portion of the clamp shown shows the stop in the disengaged position, and the protrusion of the clamp entering the jaw assembly and located in the inlet section. Figure 21 for Figure 2 The cross-sectional view of a portion of the clamp shown shows the stop in the constrained position, the clamp in the ready position, and the jaw assembly open. Figure 22 for Figure 2 The cross-sectional view of a portion of the clamp shown shows the stop in the disengaged position and the jaw assembly fully closed. Figure 23 for Figure 2A three-dimensional schematic diagram of the stop assembly of the clamping pliers shown; Figure 24 for Figure 2 The diagram shows a three-dimensional representation of the clamp arms, stop, and clamp of the clamping pliers, wherein the stop is in the constrained position and the clamp is not closed. Figure 25 for Figure 24 The diagram shows a three-dimensional representation of the clamp arm, stop, and clamp, where the stop is in the disengaged position and the clamp is closed. Figure 26-A for Figure 2 The diagram shows a three-dimensional representation of the clamp arms and stop of the clamping pliers, wherein the stop is in the disengaged position. Figure 26-B for Figure 26-A The top view of the clamp arm and stop shown, wherein the stop is in the disengaged position; Figure 26-C for Figure 26-A The side view of the clamp arm and stop shown is shown, wherein the stop is in the constrained position; Figure 26-D for Figure 26-A The side view of the clamp arm and stop shown is shown, with the stop in the disengaged position. Figure 27 for Figure 2 A three-dimensional schematic diagram of the clamp body assembly of the clamping forceps shown; Figure 28 for Figure 27 An exploded view of the clamp assembly shown; Figure 29-A for Figure 27 The diagram shows a partial cross-sectional view of the clamp assembly, with the trigger in the open position; Figure 29-B for Figure 27 The diagram shows a partial cross-sectional view of the clamp assembly, with the trigger positioned in the center. Figure 29-C for Figure 27 A cross-sectional view of a portion of the clamp assembly shown, with the trigger in the closed position; Figure 30 for Figure 2 A three-dimensional schematic diagram of the conversion mechanism for the clamping pliers shown; Figure 31 for Figure 2 A three-dimensional schematic diagram of a portion of the clamping drive tube of the clamping pliers shown; Figure 32-A A schematic diagram of the drive structure and transmission unit of the clamping clamp provided for some other specific embodiments of this disclosure, wherein the clamping mechanism is located at the initial clamping position, and the first pushing wall and the first transmission part are not engaged; Figure 32-B for Figure 32-A The diagram shows the drive structure and transmission unit of the clamp body assembly, wherein the clamping mechanism is located at the initial clamping position, and the first pushing wall cooperates with the first transmission part; Figure 32-C for Figure 32-A The diagram shows the drive structure and transmission unit of the clamp body assembly, in which the clamping mechanism has moved a distance to the far side, and the first pushing wall cooperates with the first transmission part; Figure 33-A A schematic diagram of the drive structure and transmission unit of the clamping clamp provided for some other specific embodiments of this disclosure, wherein the clamping mechanism is located at the initial clamping position, and the first pushing wall and the first transmission part are not engaged; Figure 33-B for Figure 33-A The schematic diagram of the drive structure and transmission unit shown shows that the clamping mechanism is located in the initial clamping position, and the first pushing wall cooperates with the first transmission part; Figure 33-C for Figure 33-A The schematic diagram of the drive structure and transmission unit shown shows that the clamping mechanism has moved a distance to the far side, and the first pushing wall cooperates with the first transmission part; Figure 34 This is a perspective view of a portion of the area where the conversion member of the clamping pliers is located, provided in some other specific embodiments of this disclosure, wherein the stop member is located in a constrained position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section; Figure 35 for Figure 34 The diagram shows a three-dimensional view of the area where the clamping pliers' conversion mechanism is located, in which the stop is in the disengaged position and the jaw assembly is partially closed. Figure 36 for Figure 34 The diagram shows a three-dimensional view of the area where the clamping jaws are located, with the jaw assembly fully closed. Figure 37 for Figure 34 A three-dimensional schematic diagram of the conversion mechanism for the clamping pliers shown; Figure 38 for Figure 34 A three-dimensional schematic diagram of a portion of the clamping drive tube of the clamping pliers shown; Figure 39 for Figure 34 The diagram shows the forces acting on the clamping clamp's conversion mechanism when it cannot rotate. Figure 40-A for Figure 34 The side view of the clamping drive tube, conversion component and reset component of the clamping clamp shown shows that the stop component is abnormally stuck and the clamping drive tube has not yet moved to the distal side. Figure 40-B for Figure 34 The side view of the clamping drive tube, conversion component and reset component of the clamping clamp is shown. In the figure, the stop component is abnormally stuck and the clamping drive tube has moved a distance to the distal side. Figure 41-A A schematic diagram of the drive structure and transmission unit of the clamping pliers provided for some other specific embodiments of this disclosure, wherein the jaw assembly is open, the stop is in the constrained position, and the clamping mechanism is in the initial clamping position; Figure 41-B for Figure 41-A The schematic diagram of the drive structure and transmission unit shown shows that the jaw assembly is partially closed and the clamping mechanism has moved a distance to the far side. Figure 41-C for Figure 41-A The schematic diagram of the drive structure and transmission unit shown shows that the jaw assembly is fully closed and the stop is in the disengaged position. Figure 41-D for Figure 41-A The schematic diagram of the drive structure and transmission unit shown shows that the jaw assembly is open and the clamping mechanism is reset to the initial clamping position. Figure 42 A cross-sectional view of a portion of the clamp provided for some other specific embodiments of this disclosure, wherein the stop is in the disengaged position and the clamp is in the clamping chamber; Figure 43 for Figure 42 The cross-sectional view of a portion of the clamp shown shows the stop in the disengaged position, and the protrusion of the clamp entering the jaw assembly and located in the inlet section. Figure 44 for Figure 42 The cross-sectional view of a portion of the clamp shown shows the stop in the constrained position, the clamp in the ready position, and the jaw assembly open. Figure 45 for Figure 42 The cross-sectional view of a portion of the clamp shown shows the stop in the disengaged position and the jaw assembly fully closed. Figure 46-A This is a schematic diagram of the clamping mechanism and moving assembly of a clamping clamp provided for some further specific embodiments of the present disclosure, wherein the stop is in the disengaged position and the clamp is in the clamping chamber; Figure 46-B for Figure 46-A The schematic diagram of the clamping mechanism and moving assembly shown indicates that the stop is in the disengaged position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section. Figure 46-C for Figure 46-A The schematic diagram of the clamping mechanism and moving assembly shown indicates that the stop is in the constrained position, and the protrusion of the clamp enters the jaw assembly and is located in the inlet section. Figure 46-D for Figure 46-A The schematic diagram of the clamping mechanism and moving assembly shown indicates that the stop is in the constrained position and the protrusion of the clamp enters the guide section. Figure 46-E for Figure 46-A The diagram shows the clamping mechanism and moving assembly, where the stop is in the constrained position and the clamp has reached the ready position. Figure 47 for Figure 2 A three-dimensional schematic diagram of the clamp arms shown; Figure 48 for Figure 2 A three-dimensional schematic diagram of the stop component of the clamping pliers shown; Figure 49 for Figure 48 Side view of the stop shown; Figure 50 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger in the open position; Figure 51 for Figure 50 A cross-sectional view of a portion of the clamp shown from another direction; Figure 52 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger positioned in the center. Figure 53 for Figure 52 A cross-sectional view of a portion of the clamp shown from another direction; Figure 54 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger in the closed position; Figure 55 for Figure 54 A cross-sectional view of a portion of the clamp shown from another direction; Figure 56 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger in the open position; Figure 57 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger positioned in the center. Figure 58 for Figure 2 The diagram shows a partial cross-sectional view of the clamp, with the trigger in the closed position.

[0027] The reference numerals in the above figures are: 100 - Housing; 200-Clamping compartment, 201-Third bottom, 202-Third side, 203-Limiting barb, 210-Clamp, 211-Protrusion, 211a-First protrusion, 211b-Second protrusion, 212-Clamping arm, 212a-First clamping arm, 212b-Second clamping arm, 213-Connecting part, 214-Clamping part; 300-Stop assembly, 310-Stop member, 310a-First stop member, 310b-Second stop member, 311-Second bottom, 312-Second side, 312a-First protrusion, 312b-Second protrusion, 313-Stop portion, 313a-Constraint portion, 313b-First stop section, 313c-Second stop section, 320-Transmission unit, 321-Moving assembly, 321a-Reset member, 321b-Connector, 321c-First mating portion, 321d-Second mating portion, 321e - Fourth mating part, 321f- Mounting groove, 321g- Elastic arm, 321h- Clutch part, 321i- First moving part, 321j- Second moving part, 321k- Third moving part, 321m- First guide structure, 322- Conversion part, 322a- First transmission part, 322b- Second transmission part, 322c- Mating shaft, 322d- Rotating shaft part, 322e- Sliding surface, 322f- First tooth part, 323- Floating part, 330- Guide space, 331- Inlet section, 332- Guide section; 400-Drive structure, 400A-Clamp body assembly, 410-Push rod, 411-First limiting groove, 412-First pushing part, 413-Second pushing part, 414-Receiving cavity, 415-Pushing surface, 420-Clamping mechanism, 421-Pushing barb, 422-Second limiting groove, 423-Pushing out part, 424-Abutting part, 425-Third mating part, 425a-Matching structure, 430-Clamping drive tube, 430a-First clamping... Clamping drive tube, 430b-Second clamping drive tube, 431-Third limiting groove, 432-Snap-fit ​​protrusion, 433-Abutting end, 434-First pushing wall, 435-Second pushing wall, 436-Second tooth, 440-Sleeve, 441-Snap-fit ​​groove, 450-First reset component, 460-Second reset component, 470-Third reset component, 480-First limiting component, 490-Separator, 491-Second guide structure, 400B-Trigger; 500-jaw assembly, 510-jaw arm, 510a-first jaw arm, 510b-second jaw arm, 511-first bottom, 511a-limiting groove, 511b-third sliding groove, 512-first side, 512a-first sliding groove, 512b-first groove segment, 512c-second groove segment, 512d-second sliding groove. Detailed Implementation

[0028] 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.

[0029] It is important to understand that the terms "proximal," "posterior," "distal," and "anterior" used in this article are relative to the clinician manipulating the handle assembly of the clamp. "Proximal" and "posterior" refer to the portion closer to the clinician, while "distal" and "anterior" refer to the portion farther from the clinician. That is, the manipulator is the proximal end, and the end effector is the distal end. For example, the proximal end of a component refers to the end relatively closer to the manipulator, while the distal end refers to the end relatively closer to the end effector.

[0030] In this disclosure, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, such as contact. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. It should be noted that when "connected" or "linked" is preceded by a qualifier, it has the meaning defined by that qualifier, excluding only obviously excluding cases, but not other possible cases. For example, "detachable connection" refers to a detachable connection, excluding an integral part, but movable connections are not excluded.

[0031] The term "axial" refers to the length direction of the clamp body assembly.

[0032] The structure and operation of the clamping chamber 200 and the drive structure 400 disclosed herein will not affect the function of the stop assembly 300. The structures of the clamping chamber 200 and the drive structure 400 illustrated in the embodiments of this disclosure are mainly used to illustrate how the function of the stop assembly 300 is implemented in a specific application scenario, and should not be construed as limiting the concept disclosed herein.

[0033] The clamping forceps provided in this embodiment are used to apply clamps 210 to tissues or blood vessels. For example, see... Figure 1The clamp 210 includes a protrusion 211, a clamping arm 212, a connecting portion 213, and a locking portion 214. The protrusion 211 includes a first protrusion 211a and a second protrusion 211b, the clamping arm 212 includes a first clamping arm 212a and a second clamping arm 212b, and the connecting portion 213 is located between the first clamping arm 212a and the second clamping arm 212b. The connecting portion 213 is flexible, allowing the first clamping arm 212a and the second clamping arm 212b to rotate relative to each other. One end of the first clamping arm 212a is connected to the connecting part 213, and the other end is provided with two first protrusions 211a, which protrude toward opposite sides of the first clamping arm 212a respectively; one end of the second clamping arm 212b is connected to the connecting part 213, and the other end is provided with a locking part 214, for example, the locking part 214 is a curved C-shaped hook; the second clamping arm 212b is provided with two second protrusions 211b near the locking part 216, and on opposite sides of the second clamping arm 212b, the two second protrusions 211b protrude toward the second clamping arm 212b.

[0034] Driven by an external force, the first clamping arm 212a and the second clamping arm 212b approach each other, causing the engaging part 214 to move between the two first protrusions 211a until the engaging part 214 is clamped between the two first protrusions 211a and hooked at the end of the first clamping arm 212a. At this time, the blood vessel or tissue between the first clamping arm 212a and the second clamping arm 212b is clamped, thereby achieving hemostasis of the blood vessel or tissue.

[0035] Reference Figures 2 to 22 Some embodiments of this disclosure provide a clamping pliers, including a housing 100, a clamping chamber 200, a stop assembly 300, a drive structure 400, and a jaw assembly 500; The clamping chamber 200 is connected to the housing 100. The clamping chamber 200 includes a clamp 210, and the clamp 210 includes a protrusion 211. Reference Figures 3 to 7 The drive structure 400 includes a clamp body assembly 400A and a trigger 400B. The clamp body assembly 400A is movably connected to the housing 100, and the trigger 400B is movably connected to the housing 100. (Refer to...) Figures 27 to 29-CThe clamp assembly 400A includes a clamping mechanism 420 and an applying mechanism. The trigger 400B is configured to move relative to the housing 100 to drive the clamping mechanism 420 and the applying mechanism to reciprocate along their axial direction. For example, the applying mechanism includes a push rod 410, an applying drive tube 430, and a sleeve 440. The push rod 410 is movably connected to the applying drive tube 430, which includes a first applying drive tube 430a and a second applying drive tube. The two parts 430b are interlocked radially in the clamping drive tube 430. The sleeve 440 is connected to the clamping drive tube 430. For example, the clamping drive tube 430 is provided with a snap-fit ​​protrusion 433, and the sleeve 440 is provided with a snap-fit ​​groove 442. The snap-fit ​​protrusion 433 is embedded in the snap-fit ​​groove 442 to achieve the connection between the clamping drive tube 430 and the sleeve 440. The distal end of the sleeve 440 mates with the jaw assembly 500. The clamping mechanism 420 is movably connected to... The trigger 400B, connected to the push rod 410 of the clamping mechanism, is configured to rotate relative to the housing 100 to drive the push rod 410 to move axially along the clamp body assembly 400A, thereby driving the clamping mechanism 420 to move axially along the clamp body assembly 400A to push the clamp 210 from the clamping chamber 200 into the jaw assembly 500. The trigger 400B is configured to continue rotating relative to the housing 100 to drive the push rod 410 to continue moving axially along the clamp body assembly 400A, thereby driving the clamping drive tube 430 and the sleeve 440 to move axially along the clamp body assembly 400A to drive the jaw assembly 500 to close or open. For example, the pushing surface 415 of the push rod 410 can abut against the abutting end 434 of the clamping drive tube 430 to drive the clamping drive tube 430 to move distally along the axial direction of the clamp body assembly 400A, thereby driving the sleeve 440 to move distally along the axial direction of the clamp body assembly 400A. (Refer to...) Figures 11 to 13 The sleeve 440 receives the proximal ends of the first clamp arm 510a and the second clamp arm 510b inside the sleeve 440 to achieve closure of the jaw assembly 500. The jaw assembly 500 includes a jaw arm 510 movably connected to the clamping chamber 200, and the jaw assembly 500 is configured to close or open under the drive of the clamping mechanism. Reference Figure 23 The stop assembly 300 includes a stop member 310 and a transmission unit 320 connected to the stop member 310, as shown in the figure. Figures 26-A to 26-D The stop member 310 is movably disposed on the clamp arm 510. The stop member 310 includes a first stop member 310a and a second stop member 310b, wherein the first stop member 310a is movably disposed on the first clamp arm 510a, and the second stop member 310b is movably disposed on the second clamp arm 510b; see reference. Figure 23The transmission unit 320 includes a moving component 321 and a conversion component 322. The moving component 321 is configured to move axially along the clamp body assembly 400A. The moving component 321 is connected to the stop 310. The clamping mechanism or trigger 400B cooperates with the conversion component 322. For example, see reference 322. Figures 14 to 17-B The clamping drive tube 430 mates with the conversion component 322, and the moving assembly 321 mates with the conversion component 322; see reference. Figures 5 to 7 , Figures 11 to 13 , Figure 24 and Figure 25 In response to the movement of the clamp body assembly 400A, the transmission unit 320 drives the stop 310 to move between the constrained position and the disengaged position, with the constrained position located far from the disengaged position.

[0036] Reference Figures 3 to 5 , Figures 8 to 11 , Figures 19 to 21 In response to the trigger 400B driving the push rod 410 to move to the distal side, the jaw assembly 500 remains in the open state, the push rod 410 drives the clamping mechanism 420 to move to the distal side so that the clamp 210 enters the jaw assembly 500 from the clamping chamber 200, and the drive structure 400 drives the moving component 321 to move to the distal side so as to drive the stop 310 to move to the distal side to the restraint position; Reference Figures 5 to 7 , Figures 11 to 13 , Figures 15-A to 17-B , Figures 21 to 22 In response to the trigger 400B driving the push rod 410 to continue moving distally, the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move distally so that the jaw assembly 500 moves from the open state to the closed state, and the drive structure 400 drives the conversion member 322 to move, so that the conversion member 322 drives the moving assembly 321 to move proximally so that the stop member 310 moves proximally to the disengaged position.

[0037] During the above process, when the clamping pliers perform the clamping action, the drive structure 400 drives the clamping mechanism 420 to move to the distal side, and the stop member 310 moves to the distal side. The stop member 310 provides a limiting guide for the protrusion 211 of the clamp 210 during the process of the clamp 210 moving from the clamping chamber 200 to the jaw assembly 500, so as to prevent the clamp 210 from falling out of the jaw assembly 500 during the clamping process. The conversion component 322 can convert the movement of the trigger 400B driving the push rod 410, clamping drive tube 430, and sleeve 440 to the distal side into the movement of the moving component 321 to the proximal side. Therefore, when the clamping pliers perform the clamping action, the jaw assembly 500 gradually closes, causing the clamp 210 in the ready position to close. Simultaneously, the transmission unit 320 drives the stop 310 from the restrained position to the proximal position to the disengaged position. The stop 310 reaches the disengaged position before the clamp 210 is fully closed, or the stop 310 reaches the disengaged position at the same time as the clamp 210 is fully closed. That is, when the clamp 210 is fully closed, the stop 310 has necessarily disengaged from the protrusion 211. At this time, opening the jaw assembly 500 will not exert any force on the clamp 210, thus enabling… This effectively prevents the clamp 210 from tearing tissue when the jaw assembly 500 is opened. Furthermore, the stop 310 moves proximally as the jaw assembly 500 gradually closes. That is, when the stop 310 moves proximally, the jaw assembly 500 and clamp 210 do not clamp the tissue or blood vessel. In a scheme where the stop 310 moves proximally only after the jaw assembly 500 has completely or substantially closed the clamp 210, the tissue or blood vessel, due to its elasticity, will exert significant pressure on the stop 310, thus hindering its proximal movement. However, in the clamp provided in this embodiment, the pressure on the stop 310 is smaller during its proximal movement, resulting in less friction. This helps prevent the stop 310 from getting stuck in the clamp arm 510 and being unable to move, thereby reducing the failure rate of the clamp.

[0038] The movement of the moving component 321 to the far side and the movement to the near side are both actively driven by the drive structure 400. That is, the movement of the stop 310 to the far side and the movement to the near side are both actively driven by the drive structure 400. The stop 310 has high reliability of operation and will not cause operation errors due to the stop 310 not moving in place. The clamping clamp has high reliability of operation.

[0039] The specific configuration of the conversion element 322 can vary. In some embodiments, the clamping mechanism or trigger 400B is provided with a first push wall 434; see reference. Figures 5 to 7 , Figures 14 to 17-B , Figure 30 and Figure 31 The conversion element 322 is rotatably connected to the housing 100, and the rotation axis of the conversion element 322 is perpendicular to the axial direction of the clamp body assembly 400A, as shown in the reference. Figure 30The conversion member 322 includes a first transmission part 322a and a second transmission part 322b located on both sides of the rotation shaft of the conversion member 322. A first push wall 434 cooperates with the first transmission part 322a, and a moving component 321 cooperates with the second transmission part 322b. For example, the conversion member 322 has a rotating shaft part 322d, which cooperates with a hole in the housing 100 to rotatably connect the conversion member 322 to the housing 100. The first transmission part 322a and the second transmission part 322b are respectively connected to both sides of the rotating shaft part 322d. Figures 5 to 7 Taking the direction shown as an example, when the trigger 400B drives the push rod 410 located below the rotation axis of the conversion member 322 to move distally, thereby driving the clamping drive tube 430 and the sleeve 440 to move distally, the first push wall 434 abuts against the first transmission part 322a to drive the conversion member 322 to rotate clockwise. The clockwise rotation of the conversion member 322 drives the moving component 321 located above the rotation axis of the conversion member 322 to move proximally. The conversion member 322 and the drive structure, as well as the conversion member 322 and the moving component 321, are all mechanically coupled. The conversion member 322 can convert the movement of the clamping mechanism into the movement of the moving component 321 in the opposite direction by rotating itself.

[0040] There are various configurations for the first pushing wall 434. In some embodiments, only one first pushing wall 434 may be provided, for example, referring to... Figure 31 The clamping drive tube 430 of the clamping mechanism is provided with a first push wall 434; refer to Figure 30 The first transmission part 322a may be configured as a rod-shaped part extending approximately in a direction perpendicular to the rotation axis of the conversion member 322; see reference. Figure 15-A , Figure 16-A , Figure 17-A In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move to the distal side, the first push wall 434 always abuts against the proximal side of the first transmission part 322a in the axial direction of the clamp body assembly 400A to push the conversion member 322 to rotate, thereby causing the moving assembly 321 to move to the proximal side to drive the stop member 310 to move to the proximal side.

[0041] For example, the push rod 410 of the clamping mechanism can be configured to cooperate with the first transmission part 322a. It should be noted that, in order to ensure that the stop 310 moves proximally when the clamping pliers perform the clamping action, the mating structure on the push rod 410 for cooperating with the first transmission part 322a needs to be properly configured so that the first transmission part 322a remains stationary when the clamping pliers perform the clamping action. For example, refer to... Figures 32-A to 32-CWhen the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the far side, the mating structure on the push rod 410 is in an unfitted state with the first transmission part 322a. At this time, the push rod 410 cannot drive the conversion member 322 to rotate. When the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the far side, the mating structure engages with the first transmission part 322a. At this time, the movement of the push rod 410 to the far side can drive the conversion member 322 to rotate. The first push wall 434 is disposed on the push rod 410. When the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the distal side, the first push wall 434 and the first transmission part 322a are not in a cooperating state. At this time, the push rod 410 cannot drive the conversion member 322 to rotate. When the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the distal side, the first push wall 434 then cooperates with the first transmission part 322a. At this time, the movement of the push rod 410 to the distal side can drive the conversion member 322 to rotate.

[0042] For example, the trigger 400B can also be configured to cooperate with the first transmission unit 322a. It should be noted that, in order to ensure that the stop 310 moves proximally when the clamping pliers perform the clamping action, the structure on the trigger 400B used to cooperate with the first transmission unit 322a needs to be properly configured so that the first transmission unit 322a remains stationary when the clamping pliers perform the clamping action. For example, refer to... Figures 33-A to 33-C When the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the far side, the mating structure on the trigger 400B is not in a mating state with the first transmission part 322a. At this time, the trigger 400B cannot drive the conversion part 322 to rotate. When the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the far side, the mating structure will then engage with the first transmission part 322a. At this time, the rotation of the trigger 400B can drive the conversion part 322 to rotate. The first push wall 434 is disposed on the trigger 400B. When the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the distal side, the first push wall 434 and the first transmission part 322a are not engaged. At this time, the trigger 400B cannot drive the conversion part 322 to rotate. When the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the distal side, the first push wall 434 engages with the first transmission part 322a. At this time, the rotation of the trigger 400B can drive the conversion part 322 to rotate.

[0043] During the use of the clamping pliers, if abnormal situations occur, such as the moving component 321 being unable to move due to excessive friction from other components, the stop 310 may become abnormally stuck. This prevents the stop 310 from moving proximally relative to the clamp arm 510 to the disengaged position. The proximal movement of the stop 310 is driven by the action of the drive structure when the trigger 400B drives the push rod 410, which in turn drives the clamping drive tube 430 and the sleeve 440 to move distally. To prevent damage to the components that drive the proximal movement of the stop 310 due to the continued operation of the drive structure when the stop 310 becomes abnormally stuck, refer to... Figures 15-A to 17-B and Figure 31 The first pushing wall 434 is axially inclined relative to the clamp assembly 400A and also axially inclined relative to the rotation axis of the conversion member 322. In response to the trigger 400B driving the pushing rod 410 to drive the clamping drive tube 430 and sleeve 440 to move distally, the conversion member 322 rotates, and the first transmission part 322a slides relative to the first pushing wall 434, causing the conversion member 322 to move axially away from the clamp assembly 400A along its rotation axis. (Refer to...) Figure 15-B , Figure 16-B and Figure 17-B When no abnormalities occur, the push rod 410, clamping drive tube 430, and sleeve 440 move distally, causing the conversion component 322 to rotate and driving the moving assembly 321 and stop component 310 to move proximally. Simultaneously, the conversion component 322 also floats axially along its rotation axis. (Refer to...) Figures 18-A to 18-B When the stop 310 is abnormally jammed, the conversion member 322 cannot rotate normally. However, due to the axial tilt of the first push wall 434 relative to the clamp body assembly 400A and the axial tilt of the rotation axis of the conversion member 322, the push rod 410, the clamping drive tube 430 and the sleeve 440 move to the far side, which allows the conversion member 322 to float axially along its rotation axis without rotating. Therefore, even if the stop 310 is abnormally jammed, it will not cause damage to the conversion member 322 and the moving assembly 321. After the abnormality is eliminated, the clamp can still be used normally.

[0044] Reference Figures 14 to 18-B and Figure 23 The transmission unit 320 also includes a floating element 323, which is disposed between the conversion element 322 and the housing 100. It should be noted that, for better illustration of the position of the floating element 323, the housing 100 that abuts against the floating element 323 is not shown; see reference... Figures 18-A to 18-BIn response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move to the distal side, when the conversion member 322 cannot rotate, the conversion member 322 moves away from the clamp body assembly 400A along its rotation axis, causing the floating member 323 to store energy; in response to the push rod 410, clamping drive tube 430 and sleeve 440 moving to the proximal side, the floating member 323 releases energy, causing the conversion member 322 to move closer to the clamp body assembly 400A along its rotation axis. Therefore, when the stop 310 becomes abnormally stuck and the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move to the distal side, the conversion member 322 can float axially along its rotation axis without rotating. Thus, even if the stop 310 becomes abnormally stuck, it will not cause damage to the conversion member 322 and the moving component 321. When the push rod 410, the clamping drive tube 430 and the sleeve 440 move to the proximal side to reset, the floating member 323 can release energy to reset the conversion member 322 axially along its rotation axis. After the abnormality is eliminated, there is no need for additional operation to reset the conversion member 322, and the clamp can still be used normally.

[0045] Reference Figures 15-A to 16-B In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move distally, the conversion member 322 rotates and moves axially along its rotation axis, causing the first transmission part 322a to slide relative to the first push wall 434 until the conversion member 322 disengages from the first push wall 434; see reference Figures 17-A to 17-B In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to continue moving distally, the conversion member 322 remains stationary relative to the housing 100, so that the stop member 310 remains stationary relative to the clamp arm 510, for example, referring to Figure 31 The clamping drive tube 430 is also provided with a retaining wall 437, which is located near the first push wall 434, as shown in the reference. Figure 17-B After the conversion component 322 disengages from the first push wall 434, the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to continue moving distally. The distal side of the first transmission part 322a contacts and rubs against the retaining wall 437, thereby remaining stationary relative to the housing 100. This configuration allows the moving component 321 to move proximally first during the distal movement of the clamping drive tube 430 and the sleeve 440 driven by the push rod 410. Once the stop member 310 reaches the disengagement position, the moving component 321 stops moving, and the stop member 310 remains in the disengagement position. In other words, the travel distances of the clamping drive tube 430 and the sleeve 440 and the stop member 310 can be set to different lengths to accommodate different movement requirements of the clamping mechanism and the stop member 310.

[0046] The first pushing wall 434 can also be set on the pushing rod 410 or on the trigger 400B. During the rotation of the conversion member 322, the first pushing wall 434 always abuts against the near side of the first transmission part 322a. In order to deal with the abnormal jamming of the stop member 310, when the first pushing wall 434 abuts against the conversion member 322, it can be set to tilt axially relative to the clamp body assembly 400A and axially relative to the rotation axis of the conversion member 322. In order to adapt to the different movement requirements of the clamping mechanism and the stop member 310, the first transmission part 322a can also be set to slide relative to the first pushing wall 434 during the process of the combination of the push rod 410 and the clamping mechanism moving to the far side driven by the trigger 400B, until the conversion member 322 disengages from the first pushing wall 434.

[0047] In other embodiments, multiple first push walls 434 may also be provided, for example, referring to Figures 34 to 36 and Figure 37 The first transmission part 322a includes a plurality of first teeth 322f, which are arranged circumferentially along the conversion member 322; see reference. Figures 34 to 36 and reference Figure 38 Taking the scheme in which the first pushing wall 434 is disposed on the clamping drive tube 430 of the clamping mechanism as an example, the clamping drive tube 430 of the clamping mechanism is provided with a plurality of second teeth 436, the plurality of second teeth 436 being arranged along the axial direction of the clamp body assembly 400A, and the first pushing wall 434 being located on the distal side of the second teeth 436; Refer to Figures 34 to 36 In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move to the distal side, the first tooth 322f meshes with the second tooth 436 to drive the conversion member 322 to rotate. At the same time, at least one of the first push walls 434 of the second tooth 436 abuts against the first tooth 322f. During the process of the push rod 410 driving the clamping drive tube 430 and sleeve 440 to move to the distal side, the first tooth 322f of the first transmission part 322a and the second tooth 436 of the clamping mechanism form a gear and rack transmission structure, which is compact and precise.

[0048] When the first tooth 322f and the second tooth 436 abut, the resultant force F generated at the abutment point forms a component force F1 in the axial direction of the conversion member 322. When the component force F1 reaches a set value F0, it can cause the conversion member 322 to move axially away from the clamp body assembly 400A. Furthermore, referring to… Figures 34 to 36 , Figure 40-A and Figure 40-BThe transmission unit 320 also includes a floating element 323, which is disposed between the conversion element 322 and the housing 100. The floating element 323 can apply a force to the conversion element 322 along the axial direction of the rotation axis of the conversion element 322, close to the clamp assembly 400A. When the floating element 323 is subjected to a force less than or equal to a set value F0, the floating element 323 maintains its initial length; when the floating element 323 is subjected to a force greater than the set value F0, the floating element 323 is compressed and stores energy. The floating element 323 can be a spring, and springs with different elasticities can be selected according to the different requirements of the set value F0. For example, refer to Figure 37 The first transmission part 322a has a conical surface with the rotation axis of the conversion member 322 as the central axis, and a plurality of first teeth 322f are sequentially arranged on the conical surface along the circumference of the conversion member 322, that is, the first transmission part 322a is in the shape of a bevel gear; see reference Figure 38 Taking the scheme in which the first pushing wall 434 is disposed on the clamping drive tube 430 of the clamping mechanism as an example, the clamping drive tube 430 of the clamping mechanism is provided with an inclined surface. The inclined surface is inclined relative to the axial direction of the rotation axis of the conversion member 322. The inclined surface is parallel to the axial direction of the clamp body assembly 400A. Multiple second teeth 436 are sequentially disposed on the inclined surface along the axial direction of the clamp body assembly 400A. That is, multiple second teeth 436 form an inclined rack.

[0049] Reference Figures 34 to 36 When no abnormal situation occurs that causes the stop 310 to jam, the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move distally, and the first tooth 322f meshes with the second tooth 436, causing the conversion member 322 to rotate and drive the moving component 321 and the stop 310 to move proximally. At this time, the resultant force F generated at the contact point of the first tooth 322f and the second tooth 436 forms a component force F1 in the axial direction of the rotation axis of the conversion member 322. However, at this time, the component force F1 is less than the set value F0. The floating member 323 can generate a force with the same magnitude and opposite direction as the component force F1 by maintaining its initial length, so that the first tooth 322f and the second tooth 436 remain engaged. When the stop 310 jams abnormally, the conversion member 322 cannot rotate, but since multiple first teeth 322f are set on the conical surface and multiple second teeth 436 are set on the inclined surface, refer to Figure 39 As the push rod 410 drives the clamping drive tube 430 and sleeve 440 to move distally, the resultant force F generated at the contact point between the first tooth 322f and the second tooth 436 gradually increases. The component force F1 formed by the resultant force F along the axial direction of the rotation axis of the conversion member 322 also gradually increases until the component force F1 is greater than the set value F0. The conversion member 322 moves axially away from the clamp body assembly 400A along its rotation axis, causing the floating member 323 to be compressed. The push rod 410 drives the clamping drive tube 430 and sleeve 440 to move distally, causing the conversion member 322 to float axially along its rotation axis without rotation. That is, referring to... Figures 40-A to 40-B When the clamping drive tube 430 moves to the far side, that is, moves into the paper in the direction perpendicular to the paper, the resultant force F generated at the contact point of the first tooth 322f and the second tooth 436 forms a component force F1 in the axial direction of the rotation axis of the conversion member 322, which can make the conversion member 322 move away from the clamping drive tube 430 until the first tooth 322f completely disengages from the second tooth 436. Thus, even if the stop member 310 jams abnormally, it will not cause damage to the conversion member 322 and the moving component 321. After the abnormality is eliminated, the clamp can still be used normally.

[0050] It should be noted that the first transmission part 322a can also be provided with a conical surface, and a plurality of first teeth 322f can be sequentially arranged on the conical surface along the circumference of the conversion member 322. Alternatively, in the scheme where the clamping mechanism cooperates with the conversion member 322, the component of the clamping mechanism that cooperates with the conversion member 322 can be provided with an inclined surface, the inclined surface being inclined relative to the axial direction of the rotation axis of the conversion member 322 and parallel to the axial direction of the clamp body assembly 400A, and a plurality of second teeth 436 can be sequentially arranged on the inclined surface along the axial direction of the clamp body assembly 400A. Alternatively, in the scheme where the trigger 400B cooperates with the conversion member 322, a single The trigger 400B is uniquely configured to have a conical surface with the rotation axis of the trigger 400B as the central axis, and multiple second teeth 436 are sequentially arranged on the conical surface around the rotation axis of the trigger 400B; alternatively, the first transmission part 322a may be configured to have a cylindrical surface in the circumferential direction, and the first teeth 322f may be inclined relative to the generatrix of the cylindrical surface, with multiple first teeth 322f sequentially arranged on the cylinder along the circumferential direction of the conversion member 322, and multiple second teeth 436 on the component that cooperates with the conversion member 322 in the clamping mechanism may be inclined axially relative to the clamp body assembly 400A and axially relative to the rotation axis of the conversion member 322.

[0051] Alternatively, multiple second teeth 436 can be disposed on the push rod 410, and the multiple second teeth 436 are arranged along the axial direction of the clamp body assembly 400A. When the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the distal side, the first tooth 322f and the second tooth 436 are in an unengaged state, and the push rod 410 cannot drive the conversion member 322 to rotate at this time; when the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the distal side, the first tooth 322f engages with the second tooth 436, and at this time the movement of the push rod 410 to the distal side can drive the conversion member 322 to rotate.

[0052] In the above embodiments, in order to deal with the abnormal jamming of the stop 310, the second tooth 436 can be set in the clamping mechanism, which will not be described in detail here.

[0053] Alternatively, multiple second teeth 436 can be mounted on the trigger 400B, arranged sequentially around the rotation axis of the trigger 400B. When the trigger 400B drives the push rod 410 to move the clamping mechanism 420 to the distal side, the first tooth 322f and the second tooth 436 are not engaged, and the trigger 400B cannot drive the conversion element 322 to rotate at this time. When the trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the distal side, the first tooth 322f engages with the second tooth 436, and the rotation of the trigger 400B can drive the conversion element 322 to rotate at this time.

[0054] In the above embodiment, the trigger 400B may be provided with a conical surface centered on the rotation axis of the trigger 400B. Multiple second teeth 436 are sequentially arranged on the conical surface around the rotation axis of the trigger 400B. That is, the portion of the trigger 400B that engages with the first transmission part 322a is in the shape of a bevel gear. The bevel gear portion on the trigger 400B engages with the bevel gear-shaped first transmission part 322a, which also enables the positive pressure F at the contact point between the first tooth 322f and the second tooth 436 to form a component force F1 in the axial direction of the rotation axis of the conversion member 322. This serves to prevent damage to the conversion member 322 and the moving component 321 when the stop member 310 abnormally jams.

[0055] Reference Figures 34 to 35 In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move distally, the first tooth 322f engages with the second tooth 436 to drive the conversion member 322 to rotate until all the second teeth 436 disengage from the first teeth 322f; see reference Figure 36 In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to continue moving to the distal side, the conversion member 322 remains stationary relative to the housing 100 so that the stop member 310 remains stationary relative to the clamp arm 510. For example, by providing a friction layer of material such as rubber or silicone between the pivot portion 322d and the housing 100, there is damping between the pivot portion 322d and the housing 100 so that the conversion member 322 can remain stationary relative to the housing 100 when not subjected to external force, and can rotate relative to the housing 100 when subjected to external force. The above configuration allows the moving component 321 to move towards the proximal side first during the process of the push rod 410 driving the clamping drive tube 430 and the sleeve 440 to move to the distal side. After the stop 310 reaches the disengagement position, the moving component 321 stops moving and the stop 310 remains in the disengagement position. That is, the moving stroke of the clamping drive tube 430 and the sleeve 440 and the moving stroke of the stop 310 can be set to different lengths to adapt to the different moving requirements of the clamping mechanism and the stop 310.

[0056] The moving component 321 and the conversion component 322 can be mechanically coordinated. When the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move to the distal side and drives the conversion component 322 to rotate, the conversion component 322 pulls the moving component 321, causing the moving component 321 to move to the proximal side.

[0057] For example, refer to Figure 23 and Figure 30 The conversion component 322 and the moving component 321 achieve transmission through a shaft-hole fit. The conversion component 322 is provided with a mating shaft 322c parallel to its rotation axis. The moving component 321 is provided with a mounting groove 321f, in which the mating shaft 322c is accommodated. In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move distally, the rotation of the conversion component 322 causes the mating shaft 322c to abut against the proximal inner wall of the mounting groove 321f, thereby causing the moving component 321 to move proximally. In a scheme where the conversion component 322 can float axially along its rotation axis, the length of the mating shaft 322c along the rotation axis of the conversion component 322 can be set to be greater than the length of the mounting groove 321f to ensure that the mating shaft 322c and the mounting groove 321f remain engaged during the axial movement of the conversion component 322, thus ensuring structural stability.

[0058] Reference Figure 23 The moving component 321 includes a reset member 321a and a connecting member 321b. The reset member 321a cooperates with the conversion member 322, and the connecting member 321b is connected to the stop member 310. The connecting member 321b includes a first mating part 321c, and the reset member 321a includes a second mating part 321d. The first mating part 321c and the second mating part 321d are configured to enter or disengage with the movement of the clamping mechanism. Reference Figures 3 to 5 , Figures 8 to 11 , Figures 14 to 15-A , Figures 19 to 21 The trigger 400B drives the push rod 410 to drive the clamping mechanism 420 to move to the distal side, and the connecting member 321b moves to the distal side to drive the stop member 310 from the disengaged position to the constrained position. During the above process, at least before the trigger 400B drives the push rod 410 to drive the clamping mechanism 420 to move to the distal side until the clamping mechanism 420 reaches the limit position, the first mating part 321c and the second mating part 321d are in a non-maturing state. It should be noted that at this time, the non-maturing state means that the second mating part 321d cannot transmit force to the first mating part 321c, so the connecting member 321b cannot drive the reset member 321a to move as a whole. Reference Figures 5 to 7 , Figures 11 to 13 , Figures 15-A to 17-B , Figures 21 to 22Trigger 400B drives push rod 410 to drive clamping drive tube 430 and sleeve 440 to move distally, jaw assembly 500 closes, reset member 321a moves proximally, first mating part 321c and second mating part 321d are in a mating state. It should be noted that the mating state means that the second mating part 321d can transmit force to the first mating part 321c. Therefore, reset member 321a can drive connecting member 321b to move, thereby causing reset member 321a to drive stop member 310 to move proximally to the disengaged position through connecting member 321b.

[0059] In the reset member 321a and the connecting member 321b, the first mating part 321c and the second mating part 321d, which enter or exit the mating state with the movement of the clamping mechanism, can drive the stop member 310 to move to the proximal side when the reset member 321a moves to the proximal side, but will not drive the stop member 310 to move to the distal side when the reset member 321a moves to the distal side. The movement of the stop member 310 to the distal side is driven by other components. That is, the movement of the stop member 310 to the distal side and the movement to the proximal side are driven by different components, which helps to improve the reliability of the movement of the stop member 310.

[0060] Applying the above scheme to the automatic firing clamp, a reset action occurs. After the clamping and applying actions are completed, the clamping mechanism 420 and the clamping mechanism move proximally to reset, that is, from Figure 7 State of motion to Figure 3 Status, by Figure 13 State of motion to Figure 8 Status, by Figure 17-A State of motion to Figure 14 Status, by Figure 22 State of motion to Figure 19The state causes the conversion member 322 to rotate, driving the reset member 321a to move distally, disengaging the first mating part 321c from the second mating part 321d and entering an unmating state. It should be noted that this unmating state means that the second mating part 321d cannot transmit force to the first mating part 321c, therefore the reset member 321a cannot drive the connecting member 321b to move. During this process, the stop member 310 remains in the disengaged position. For example, at this time, the second bottom 311 of the stop member 310 abuts against the proximal inner wall of the third sliding groove 511b of the clamp arm 510. During the reset process, the push rod 410, the clamping drive tube 430, and the sleeve 440 first move proximally. During the movement, the clamping mechanism 420 remains stationary, and there is friction between the moving component 321 and the clamping mechanism 420. Under the action of friction, the stop 310 remains in the disengaged position. After the clamping drive tube 430 and the sleeve 440 are reset to their initial state, the push rod 410 and the clamping mechanism 420 move proximally. The clamping mechanism 420 moves proximally relative to the moving component 321, causing the moving component 321 to tend to move proximally. However, since the stop 310 is limited by the proximal inner wall of the third sliding groove 511b of the clamp arm 510, the stop 310 remains in the disengaged position. After the above actions, the clamping clamp is reset from the state of clamping completion to the initial state before the clamping action begins.

[0061] In the reset member 321a and the connecting member 321b, the first mating part 321c and the second mating part 321d, which enter or exit the mating state with the movement of the clamping mechanism, can drive the stop member 310 to move to the proximal side when the reset member 321a moves to the proximal side, but will not drive the stop member 310 to move to the distal side when the reset member 321a moves to the distal side. Thus, the stop member 310 can move from the disengaged position to the distal position when the push rod 410 drives the clamping mechanism 420 to move to the distal side, and from the constrained position to the proximal position when the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move to the distal side, and remain in the disengaged position when the clamping mechanism 420 and the clamping mechanism move to the proximal side. That is, the action sequence of the clamp body assembly 400A and the stop assembly 300 can be cyclically executed, thereby realizing continuous clamping.

[0062] The reset member 321a and the connector 321b have various structural forms. Exemplarily, in some embodiments, refer to Figure 14 , Figure 15-A , Figure 16-A , Figure 17-A and Figure 23 The second mating part 321d has a groove extending axially along the clamp body assembly 400A, and the first mating part 321c is received in the groove; In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move to the distal side, the first mating part 321c moves to the distal side inside the groove, and the first mating part 321c gradually approaches the distal inner wall of the groove. Reference Figure 15-A , Figure 16-A and Figure 17-A In response to the trigger 400B driving the push rod 410 to drive the clamping drive tube 430 and sleeve 440 to move to the distal side, the conversion member 322 rotates to drive the reset member 321a to move to the proximal side, and the first mating part 321c abuts against the inner wall of the groove, so that the reset member 321a drives the stop member 310 to move to the proximal side through the connector 321b; In response to the clamping mechanism moving to the proximal side to reset, the conversion member 322 rotates, causing the reset member 321a to move to the distal side. The groove moves to the distal side relative to the first mating part 321c, causing the distal inner wall of the groove to disengage from the first mating part 321c.

[0063] The groove of the second mating part 321d mates with the first mating part 321c, enabling the first mating part 321c and the second mating part 321d to enter or disengage with the movement of the clamping mechanism in the reset member 321a and the connecting member 321b. When the reset member 321a moves proximally, it can drive the stop member 310 to move proximally, but when the reset member 321a moves distally, it will not drive the stop member 310 to move distally. Thus, the stop member 310 can move from the disengaged position to the constrained position when the push rod 410 drives the clamping mechanism 420 to move distally, and from the constrained position to the disengaged position when the push rod 410 drives the clamping drive tube 430 and the sleeve 440 to move distally, and remain in the disengaged position when the clamping mechanism 420 and the clamping mechanism move proximally. That is, the action sequence of the clamp body assembly 400A and the stop assembly 300 can be cyclically executed, thereby realizing continuous clamping.

[0064] In other embodiments, reference is made to Figures 41-A to 41-D The reset member 321a is a flexible rope, one end of which is connected to the second transmission part 322b. The end of the flexible rope away from the second transmission part 322b is the second mating part 321d. The second mating part 321d is connected to the first mating part 321c of the connector 321b. For example, the second mating part 321d is a rope loop or a rope end fixed to the first mating part 321c. It should be noted that in this embodiment, the mating state of the first mating part 321c and the second mating part 321d means that the second mating part 321d can transmit the tension to the first mating part 321c so that the flexible rope can drive the connector 321b to move. The unmatting state means that the flexible rope cannot drive the connector 321b to move.

[0065] Reference Figure 41-D When the trigger 400B is about to drive the push rod 410 to move the clamping mechanism 420 to the distal side, the flexible rope is in a relaxed state, responding to the trigger 400B driving the push rod 410 to move the clamping mechanism 420 to the distal side, that is, by Figure 41-D The state of motion to Figure 41-A In the state where the connector 321b moves to the distal side, it drives the stop 310 to move from the disengaged position to the constrained position. During this process, the first mating part 321c drives the second mating part 321d to gradually move to the distal side, so that the flexible rope is gradually straightened. At least before the trigger 400B drives the push rod 410 to drive the clamping mechanism 420 to move to the distal side until the clamping mechanism 420 reaches the limit position, the flexible rope is not completely straightened. The first mating part 321c and the second mating part 321d are in a non-maturing state, and the connector 321b cannot drive the reset part 321a to move as a whole. Reference Figures 41-A to 41-C In response to the trigger 400B driving the push rod 410 to move the clamping drive tube 430 and sleeve 440 to the distal side to drive the jaw assembly 500 to close, the conversion member 322 drives one end of the flexible rope connected to the second transmission part 322b to move to the proximal side. The flexible rope is in a straightened state, that is, the first mating part 321c and the second mating part 321d are in a mating state. The conversion member 322 drives the connecting member 321b to move to the proximal side through the straightened flexible rope, thereby causing the reset member 321a to drive the connecting member 321b to move to the proximal side, so as to drive the stop member 310 to move to the proximal side to the disengaged position. Reference Figures 41-C to 41-D The clamping mechanism moves to the proximal side to reset, causing the conversion member 322 to rotate. This drives the end of the reset member 321a connected to the second transmission part 322b to move to the distal side. Since the flexible rope cannot provide support, the first mating part 321c and the second mating part 321d are disengaged, and the flexible rope is in a relaxed state. The reset member 321a cannot drive the connecting member 321b to move to the distal side, so the stop member 310 can remain in the disengaged position.

[0066] Reference Figure 15-A and Figure 16-A In response to the clamping mechanism moving distally from its initial clamping position, the jaw assembly 500 begins to close. The clamping mechanism, through the conversion member 322, drives the reset member 321a proximally, causing the first mating part 321c and the second mating part 321d to enter the mating state from the unmating state; see reference. Figure 16-A and Figure 17-AIn response to the clamping mechanism continuing to move distally, the jaw assembly 500 continues to close, the reset member 321a moves proximally, the first mating part 321c and the second mating part 321d are in a mating state, and the reset member 321a can drive the connecting member 321b to move, thereby causing the reset member 321a to drive the stop member 310 to move proximally to the disengaged position through the connecting member 321b; In response to the clamping mechanism moving proximally to the initial clamping position, i.e., from Figure 17-A The state of motion to Figure 14 In the state where the clamping mechanism drives the reset member 321a to move to the distal side through the conversion member 322, the first mating part 321c and the second mating part 321d are disengaged, and the stop member 310 remains in the disengaged position.

[0067] The above configuration enables the stop 310 to move proximally after the jaw assembly 500 has closed to a certain extent. When the jaw assembly 500 is closed to a certain extent, the clamp 210 in the ready position of the jaw assembly 500 is compressed to a certain extent, and the clamp 210 can generate a greater elastic force than when the jaw assembly 500 is open. Compared with when the jaw assembly 500 is open, the abutting force of the first protrusion 211a against the first clamp arm 510a is increased, and the abutting force of the second protrusion 211b against the second clamp arm 510b is increased. As a result, the friction between the clamp 210 and the first clamp arm 510a and the second clamp arm 510b is increased, making the clamp... The clamp 210 can be more stably accommodated in the jaw assembly 500; then the jaw assembly 500 continues to close and the stop 310 moves proximally, releasing the constraint on the first protrusion 211a and the second protrusion 211b. Under the action of the friction between the clamp 210 and the first jaw arm 510a and the second jaw arm 510b, the stop 310 will not cause the clamp 210 to fall out of the jaw assembly 500 when it moves to the disengagement position, thus more effectively ensuring the stability of the clamp 210 in the jaw assembly 500. Furthermore, after the clamping mechanism moves proximally to reset to the initial clamping position, the relative positions of the first mating part 321c and the second mating part 321d also reset to the unmatting initial state, enabling the cyclic execution sequence of the clamp body assembly 400A and the stop assembly 300, thereby achieving continuous clamping.

[0068] It is understood that the above configuration can be applied to a scheme in which the second mating part 321d has a groove extending axially along the clamp body assembly 400A and the first mating part 321c is accommodated in the groove, or in a scheme in which the reset member 321a is a flexible rope.

[0069] When the above-described configuration is applied to the second mating part 321d having a groove extending axially along the clamp body assembly 400A, and the first mating part 321c is accommodated in the groove, in response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move distally, the first mating part 321c moves distally inside the groove, but the first mating part 321c has not yet contacted the distal inner wall of the groove; see reference Figure 15-A and Figure 16-A The trigger 400B drives the push rod 410 to move the clamping drive tube 430 and the sleeve 440 to the distal side. The conversion member 322 rotates to drive the reset member 321a to move to the proximal side, so that the groove moves proximal to the first mating part 321c until the inner wall of the distal end of the groove abuts against the first mating part 321c; see reference. Figure 16-A and Figure 17-A Then, the trigger 400B drives the push rod 410 to drive the clamping drive tube 430 and the sleeve 440 to continue moving to the distal side, the reset member 321a moves to the proximal side, and the first mating part 321c abuts against the inner wall of the groove, so that the reset member 321a drives the stop member 310 to move to the proximal side through the connecting member 321b; the clamping mechanism moves to the proximal side to reset, and the position of the first mating part 321c in the groove is reset to the initial state before the clamping mechanism 420 starts to move to the distal side.

[0070] When the above configuration is applied to a scheme where the reset member 321a is a flexible rope, refer to Figure 41-D When the trigger 400B is about to drive the push rod 410 to move the clamping mechanism 420 to the distal side, the flexible rope is in a relaxed state, responding to the trigger 400B driving the push rod 410 to move the clamping mechanism 420 to the distal side, that is, by Figure 41-D The state of motion to Figure 41-A In this state, connector 321b moves distally to move stop 310 from the disengaged position to the constrained position. During this process, first mating part 321c drives second mating part 321d to gradually move distally, causing the flexible rope to gradually move towards a taut state, but still remain in a relaxed state; refer to Figures 41-A to 41-B In response to the trigger 400B driving the push rod 410 to move the clamping drive tube 430 and sleeve 440 to the distal side to drive the jaw assembly 500 to close, the conversion member 322 drives one end of the flexible rope connected to the second transmission part 322b to move to the proximal side, so that the flexible rope is gradually straightened, thereby the first mating part 321c and the second mating part 321d enter the mating state, at which time the stop member 310 remains in the restrained position; refer to Figures 41-B to 41-CIn response to the trigger 400B driving the push rod 410 to continue moving the clamping drive tube 430 and sleeve 440 distally to drive the jaw assembly 500 to continue closing, the conversion member 322 drives the connecting member 321b proximally via the taut flexible rope, thereby causing the reset member 321a to drive the connecting member 321b proximally, thereby driving the stop member 310 proximally to the disengaged position; see reference Figures 41-C to 41-D The clamping mechanism moves to the proximal side to reset, and the conversion member 322 rotates to drive one end of the flexible rope connected to the second transmission part 322b to move to the distal side, so that the flexible rope gradually relaxes until it is reset to the initial state before the clamping mechanism 420 starts to move to the distal side.

[0071] Reference Figure 28 The clamping mechanism 420 is provided with a third mating part 425, and the moving component 321 is provided with a fourth mating part 321e; Reference Figures 19 to 20 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move to the distal side, the clamping mechanism 420 drives the clamp 210 from the clamping chamber 200 into the jaw assembly 500. The clamping mechanism 420 moves to the distal side relative to the moving assembly 321 so that the third mating part 425 and the fourth mating part 321e enter a mating state. For example, the third mating part 425 has a mating structure 425a, and the fourth mating part 321e abuts against the mating structure 425a so that the third mating part 425 and the fourth mating part 321e enter a mating state. Reference Figure 20 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to continue moving to the distal side, the clamping mechanism 420 drives the clamp 210 to continue moving to the distal side in the jaw assembly 500. The clamping mechanism 420 and the moving assembly 321 move to the distal side synchronously under the cooperation of the third mating part 425 and the fourth mating part 321e. The moving assembly 321 drives the stop 310 to move from the disengaged position to the restrained position. Reference Figures 20 to 21 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to continue moving to the distal side, at this time the second bottom 311 of the stop member 310 is limited by the distal inner wall of the third sliding groove 511b of the clamp arm 510 in the constrained position and cannot continue to move to the distal side. Therefore, the moving component 321 also stops moving. The clamping mechanism 420 drives the clamp 210 to continue moving to the distal side in the jaw assembly 500 until the clamp 210 reaches the ready position. The clamping mechanism 420 moves to the distal side relative to the moving component 321, so that the third mating part 425 and the fourth mating part 321e are disengaged. For example, the fourth mating part 321e disengages from the mating structure 425a so that the third mating part 425 and the fourth mating part 321e are disengaged.

[0072] Reference Figure 28 The clamping chamber 200 includes a third bottom 201 extending axially and two opposing third sides 202. (See reference...) Figure 51 , Figure 53 and Figure 55 When the clamp 210 is installed in the clamping chamber 200, it is compressed due to the size and internal space of the chamber 200. For example, the first clamping arm 212a abuts against one of the third sides 202, and the second clamping arm 212b abuts against the other third side 202, so that the first clamping arm 212a and the second clamping arm 212b are close to each other but not engaged. Before the clamp 210 moves from the clamping chamber 200 to the jaw assembly 500, the clamp 210 is in a compressed state in the clamping chamber 200. Therefore, when the clamp 210 moves from the clamping chamber 200 to the jaw assembly 500, the clamp 210 tends to remain in a compressed state. If the clamp 210 cannot fully open when it enters the jaw assembly 500, the clamp 210 may fall out of the jaw assembly 500, causing the clamping pliers to fail to clamp properly.

[0073] As the clamping mechanism 420 moves, the third mating part 425 and the fourth mating part 321e can enter or disengage, thus enabling the clamp 210 to move together with the stop 310 after moving a certain distance, and the clamp 210 to move independently to the ready position after the stop 310 reaches the constraint position. During the process of the clamp body assembly 400A driving the clamp 210 from the clamping chamber 200 into the jaw assembly 500 and moving distally to the ready position in the jaw assembly 500, the stop member 310 cooperates with the clamp arm 510 to provide a limit and guide for the protrusion 211 of the clamp 210. This ensures that during the movement of the clamp 210 from the clamping chamber 200 to the ready position in the jaw assembly 500, the protrusion 211 is restricted between the stop member 310 and the clamp arm 510, and gradually opens to a set angle, thereby improving the stability of the clamp 210 during clamping and preventing the clamp 210 from falling out of the jaw assembly 500.

[0074] The third mating part 425 may be provided with a groove structure, for example, in some embodiments, referring to Figures 19 to 22 , Figure 28 The third mating part 425 has a groove extending axially along the clamp body assembly 400A. For example, the inner wall of the near end of the groove can be set as a mating structure 425a. The clamping mechanism 420 has an initial state and a moving state. When the clamping mechanism 420 is in the initial state, the fourth mating part 321e is accommodated in the groove.

[0075] Reference Figures 19 to 20In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move to the distal side, the clamping mechanism 420 switches from the initial state to the moving state, and the groove moves relative to the fourth mating part 321e until the mating structure 425a abuts against the fourth mating part 321e. During this process, the clamping mechanism 420 pushes the clamp 210 from the clamping chamber 200 to the jaw assembly 500, and the stop 310 remains in the disengaged position. The width of the groove can be set to be greater than the width of the portion of the fourth mating part 321e that is accommodated in the groove, so that the fourth mating part 321e does not contact the clamping mechanism 420, reducing the friction force on the clamping mechanism 420 during this process, making the clamping force easier to apply. Reference Figure 20 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to continue moving to the distal side, the clamping mechanism 420 and the moving component 321 move to the distal side synchronously under the abutting action of the fourth mating part 321e and the mating structure 425a, so that the clamp 210 and the stop member 310 move synchronously until the stop member 310 reaches the constraint position. Reference Figures 20 to 21 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to continue moving to the distal side, the second bottom 311 of the stop member 310 is limited by the distal inner wall of the third sliding groove 511b of the clamp arm 510, the moving component 321 stops moving, and the clamping mechanism 420 continues to move to the distal side, so that the fourth mating part 321e bypasses the mating structure 425a and disengages from the groove. The fourth mating part 321e abuts and rubs against the surface of the clamping mechanism 420 near the moving component 321, so that the moving component 321 has a tendency to move to the distal side, thereby keeping the stop member 310 in the constrained position.

[0076] In other embodiments, reference is made to Figures 42 to 45 The third mating part 425 has a mating groove, for example, the inner wall near the mating groove can be provided as a mating structure 425a; Reference Figures 42 to 43 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move to the far side, the fourth mating part 321e and the mating groove approach each other until the fourth mating part 321e is embedded in the mating groove; Reference Figure 43 In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to move to the far side, the fourth mating part 321e abuts against the mating structure 425a, so that the moving component 321 drives the stop 310 to move from the disengaged position to the constrained position. Reference Figures 43 to 44In response to the trigger 400B driving the push rod 410 to drive the clamping mechanism 420 to continue moving to the far side, the stop 310 is limited by the clamp arm 510 and held in the constrained position, and the clamping mechanism 420 continues to move to the far side, so that the fourth mating part 321e bypasses the mating structure 425a and disengages from the mating groove.

[0077] The fourth mating part 321e can disengage from the mating groove and move to the near side of the mating groove, or it can disengage from the mating groove and move to the far side of the mating groove. Therefore, it can also realize the action sequence of the clamp 210 moving a certain distance to the far side, the clamp 210 and the stop member 310 moving together, and the clamp 210 moving to the ready position separately after the stop member 310 reaches the constraint position.

[0078] In the two specific embodiments described above, taking the scheme in which the third mating part 425 is disposed on the clamping mechanism 420 and the fourth mating part 321e is disposed on the moving component 321 as an example, the clutch part 321h is accommodated in the groove when it is engaged with the mating structure 425a, and abuts against the surface of the clamping mechanism 420 on the side near the moving component 321 when it is disengaged from the mating structure 425a. The fourth mating part 321e requires less space to operate, which helps to reduce the distance between the clamping mechanism 420 and the moving component 321, making the structure of the clamp more compact.

[0079] The third mating part 425 can also be configured as a protruding structure, see reference. Figures 46-A to 46-E The third mating part 425 has a mating protrusion, which is a mating structure 425a. (Refer to...) Figures 46-A to 46-B In response to the trigger 400B driving the combination of push rod 410 and clamping mechanism 420 to move distally, the mating protrusion gradually approaches the clutch part 321h until the mating structure 425a abuts against the clutch part 321h; see reference Figures 46-B to 46-C In response to the trigger 400B driving the combination of push rod 410 and clamping mechanism 420 to move distally, the cooperating structure 425a abuts against the clutch part 321h, causing the moving component 321 to drive the stop member 310 from the disengaged position to the restrained position; see reference Figures 46-C to 46-E In response to the trigger 400B driving the combination of push rod 410 and clamping mechanism 420 to continue moving to the distal side, the stop 310 is limited by clamp arm 510 and held in the constrained position, and the clamping mechanism 420 continues to move to the distal side, causing the elastic arm 321g to deform, thereby causing the clutch part 321h to bypass the mating structure 425a and disengage from the mating protrusion.

[0080] In one specific embodiment described above, taking the third mating part 425 disposed on the clamping mechanism 420 as an example, the clamping mechanism 420 does not need to make a hole in order to form the mating structure 425a. Therefore, the strength of the clamping mechanism 420 will not be weakened, which is beneficial to ensuring the structural strength of the clamping clamp and reducing the failure rate.

[0081] The structure of the fourth mating part 321e can take many forms, for example, refer to Figures 19 to 22 , Figures 42 to 45 The fourth mating part 321e may include an elastic arm 321g and a clutch part 321h, with the distal end of the elastic arm 321g connected to the clutch part 321h; the moving assembly 321 includes the fourth mating part 321e, the elastic arm 321g extends in the direction from the proximal side to the distal side, for example, the elastic arm 321g may be set to tilt in the direction closer to the feeding mechanism 420, the elastic arm 321g has elastic deformation capability, the elastic arm 321g is set in the form of a spring, and the clutch part 321h is a protruding structure formed by bending from the distal end of the elastic arm 321g.

[0082] When the clamping mechanism 420 moves to the distal side, the mating structure 425a of the third mating part 425 abuts against the clutch part 321h of the fourth mating part 321e, so that the clamping mechanism 420 and the moving component 321 move to the distal side synchronously until the stop member 310 moves to the restraint position; when the stop member 310 reaches the restraint position and the clamping mechanism 420 continues to move to the distal side, the clutch part 321h of the fourth mating part 321e is subjected to the abutting force of the mating structure 425a of the third mating part 425, so that the elastic arm 321g deforms in the direction away from the clamping mechanism 420, thereby the clutch part 321h bypasses the mating structure 425a of the third mating part 425 and disengages from the third mating part 425.

[0083] In other embodiments, the clutch portion 321h may also be a hemispherical or other shaped protrusion formed by stamping the distal end of the elastic arm 321g.

[0084] For example, refer to Figure 23The moving assembly 321 also includes a first moving part 321i and a second moving part 321j connected sequentially from the distal to the proximal side. The clutch part 321h is integrally connected to the distal end of the elastic arm 321g, and the proximal end of the elastic arm 321g is integrally connected to the second moving part 321j. The second moving part 321j and the fourth mating part 321e can be integrally formed by sheet metal process, which is relatively simple to manufacture. Moreover, by selecting appropriate materials, the elastic arm 321g can have appropriate elasticity to ensure that when the stop member 310 has not reached the restraint position, the clutch part 321h can stably abut against the inner wall of the third mating part 425. When the stop member 310 reaches the restraint position, the elastic arm 321g can deform to disengage the clutch part 321h from the third mating part 425. The distal end of the first moving part 321i is connected to the stop member 310, and the thickness of the first moving part 321i is greater than the thickness of the second moving part 321j. The first moving part 321i used to connect the stop 310 has a larger thickness and less elasticity, so it is not easy for the first moving part 321i to deform or be damaged during the movement of the stop 310. The second moving part 321j used to cooperate with the clamping mechanism 420 has a smaller thickness and greater elasticity, so it can ensure that when the stop 310 has not reached the constraint position, the clutch part 321h and the inner wall of the third mating part 425 can be stably abutted. When the stop 310 reaches the constraint position, the elastic arm 321g can deform to disengage the clutch part 321h from the third mating part 425.

[0085] In addition, refer to Figure 23 The moving component 321 may also include a third moving part 321k connected to the second moving part 321j, a first mating part 321c disposed at the proximal end of the third moving part 321k, the second moving part 321j being plate-shaped; the third moving part 321k being rod-shaped and having bends, a portion of the third moving part 321k extending in a direction parallel to the axial direction of the clamp body assembly 400A, and a portion of the third moving part 321k extending in a direction intersecting the axial direction of the clamp body assembly 400A to form the first mating part 321c.

[0086] In other embodiments, the clamping mechanism 420 may include a fourth mating part 321e, and the elastic arm 321g may be inclined toward the moving component 321 in the direction from the proximal side to the distal side; based on this, the proximal end of the elastic arm 321g may be integrally formed with the clamping mechanism 420, and the clamping mechanism 420 and the fourth mating part 321e may be integrally formed by sheet metal process.

[0087] Reference Figure 28A separator 490 is provided between the clamping mechanism 420 and the moving component 321. The separator 490 is connected to the clamping mechanism 420 and slidably connected to the moving component 321. The separator 490 can separate the clamping mechanism 420 and the moving component 321, creating a certain gap between them. For example, due to manufacturing tolerances, there may be a certain deviation between the extension direction of the clamping mechanism 420 or the moving component 321 and the axial direction of the clamp body assembly 400A. The gap supported by the separator 490 between the clamping mechanism 420 and the moving component 321 can accommodate this deviation to a certain extent, allowing the clamping mechanism 420 and the moving component 321 to still be assembled and used normally. In addition, the separator 490 can be made of a material with a low coefficient of friction, thereby reducing the frictional force generated when the clamping mechanism 420 and the moving component 321 move relative to each other.

[0088] Reference Figure 28 The moving component 321 is provided with a first guide structure 321m, and the separator 490 is provided with a second guide structure 491. The first guide structure 321m is a protrusion, and the second guide structure 491 is a groove. The protrusion is slidably accommodated in the groove. The cooperation between the first guide structure 321m and the second guide structure 491 can provide guidance for the relative movement of the clamping mechanism 420 and the moving component 321, so as to improve the stability of the operation.

[0089] The following combination Figures 24 to 26-D , Figures 47 to 49 The specific structures of the jaw assembly 500 and the stop 310 in some embodiments of the clamping pliers provided in this disclosure will be described. It should be noted that the following content is merely illustrative and is not intended to limit the scope of this disclosure.

[0090] Reference Figure 47 The clamp arm 510 includes a first bottom 511, as shown in the reference. Figure 48 and Figure 49 The stop member 310 includes a stop portion 313 spaced apart from the first bottom 511 of the clamp arm 510. The stop portion 313 includes a guide portion and a restraint portion 313a connected sequentially from the proximal side to the distal side. (Refer to...) Figure 26-A A guide space 330 is defined between the guide portion and the first bottom 511 of the clamp arm 510. When the stop 310 is in the constrained position, a constrained space is formed between the constrained portion 313a and the first bottom 511. The trigger 400B drives the clamp body assembly 400A to move, and the clamp body assembly 400A drives the clamp 210 from the clamping chamber 200 into the jaw assembly 500 and moves distally within the jaw assembly 500 to the ready position, including the following actions: Reference Figure 8 and Figure 9In response to the clamp body assembly 400A driving the clamp 210 to enter the jaw assembly 500 from the clamping chamber 200, the protrusion 211 enters the guide space 330, and at the same time the stop 310 remains in the disengaged position. At this time, the entrance of the guide space 330 is close to the clamping chamber 200, and the clamp 210 moves to the distal side from the clamping chamber 200. The protrusion 211 can enter the guide space 330 by moving a short distance. The protrusion 211 is not likely to deviate from the set movement path during the process of moving from the clamping chamber 200 to the distal side. Reference Figure 9 and Figure 10 In response to the clamp body assembly 400A driving the clamp 210 to continue moving distally in the jaw assembly 500, the clamp body assembly 400A drives the transmission unit 320 to move the stop 310 from the disengaged position to the constrained position. The protrusion 211 remains in the guide space 330. Therefore, the protrusion 211 is always constrained by the stop 310 during the distal movement of the stop 310 and will not fall off between the stop 310 and the clamp arm 510. Reference Figure 10 and Figure 11 In response to the clamp body assembly 400A, the drive clamp 210 continues to move distally in the jaw assembly 500 until the clamp 210 reaches the ready position. The stop 310 remains in the constrained position. A constrained space is defined between the constrained portion 313a and the first bottom 511 of the clamp arm 510. The distal end of the guide space 330 is connected to the constrained space. The protrusion 211 moves within the guide space 330 and is always constrained by the stop 310. Under the constraint of the stop 310 and the clamp arm 510, the protrusion 211 moves along the guide space 330 into the constrained space and will not fall off between the stop 310 and the clamp arm 510.

[0091] The above configuration ensures that the protrusion 211 is effectively constrained by the stop 313 throughout the entire process of the clamp 210 moving from the clamping chamber 200 to the ready position in the jaw assembly 500, which helps to improve the stability of the clamp 210 during movement.

[0092] Reference Figure 47 The clamp arm 510 also includes two first side portions 512 disposed on opposite sides of the first bottom 511, the first bottom 511 having a third sliding groove 511b; see reference Figure 48 and Figure 49The stop member 310 also includes a second bottom 311 and a second side portion 312 disposed on the side of the second bottom 311. The second bottom 311 is slidably accommodated in a third sliding groove 511b. When the stop member 310 is in the disengaged position, the proximal inner wall of the third sliding groove 511b of the clamp arm 510 abuts against the second bottom 311 of the stop member 310 to prevent the stop member 310 from continuing to move proximally. When the stop member 310 is in the restrained position, the distal inner wall of the third sliding groove 511b of the clamp arm 510 abuts against the second bottom 311 of the stop member 310 to prevent the stop member 310 from continuing to move distally. The guide portion includes a first stop section 313b and a second stop section 313c connected sequentially from proximity to distality. The first stop section 313b is disposed opposite to the second bottom 311. (Refer to...) Figures 24 to 26-D The two opposite sides of the second bottom 311 respectively contact the two first side portions 512. The second side portion 312 of the stop member 310 is slidably connected to the first side portion 512. A guide space 330 is formed between the stop portion 313 and the first bottom 511 of the clamp arm 510. The guide space 330 includes an inlet section 331 and a guide section 332 that are connected sequentially from the proximal side to the distal side. The inlet section 331 is formed between the second bottom 311 of the stop member 310 and the first stop section 313b. The guide section 332 is formed between the first bottom 511 of the clamp arm 510 and the second stop section 313c of the stop member 310. When the stop member 310 is in the constrained position, the end of the guide section 332 away from the inlet section 331 is connected to the constrained space.

[0093] When the clamp 210 enters the jaw assembly 500, the stop portion 313 of the first stop 310a can restrict the movement of the first protrusion 211a toward the second clamp arm 510b; the stop portion 313 of the second stop 310b can restrict the movement of the second protrusion 211b toward the first clamp arm 510a. In the width direction of the clamp arm 510, the stop portion 313 can also be located only on one side of the clamp arm 510, which helps to reduce the size of the clamp arm 510 in its width direction, allowing the clamp to adapt to confined operating spaces and expanding the application scenarios of the clamp.

[0094] Reference Figure 8 and Figure 9 In response to the clamp body assembly 400A driving the clamp 210 to move distally, the protrusion 211 enters the guide section 331, that is, the protrusion 211 is constrained between the second bottom 311 and the first stop section 313b, and the stop 310 is held in the disengaged position. For example, at this time, the moving assembly 321 is not subjected to a distal pushing force and is held stationary by friction from other stationary components, so that the stop 310 is held in the disengaged position. Reference Figure 9 and Figure 10In response to the clamp body assembly 400A driving the clamp 210 to continue moving distally, the stop 310 moves from the disengaged position to the constrained position, the protrusion 211 is held in the guide section 331, that is, the protrusion 211 is held between the second bottom 311 and the first stop section 313b, and a constrained space is formed between the stop 310 and the clamp arm 510 when it reaches the constrained position, and the distal end of the guide section 332 is connected to the constrained space; Reference Figure 10 and Figure 11 In response to the clamp body assembly 400A driving the clamp 210 to continue moving distally until the clamp 210 reaches the ready position, the stop member 310 remains in the constrained position. For example, at this time, the second bottom 311 of the stop member 310 abuts against the distal inner wall of the third sliding groove 511b of the clamp arm 510. Furthermore, when the component in the clamp body assembly 400A that performs the clamping action moves distally, it rubs against the moving component 321, causing the moving component 321 to tend to move distally, so that the stop member 310 is balanced by force and remains in the constrained position. The protrusion 211 enters the guide section 332 from the inlet section 331 and moves distally in the guide section 332 to the constrained space.

[0095] As the clamp 210 moves from the clamping chamber 200 to the distal side, after the protrusion 211 enters the guide section 331, the clamp 210 and the stop member 310 move to the distal side together, and the protrusion 211 remains in the guide section 331. During the movement of the stop member 310, the two sides of the protrusion 211 in the width direction of the clamp arm 510 are the second bottom 311 and the first stop section 313b, both of which are part of the stop member 310.

[0096] Reference Figure 26-A , Figure 48 and Figure 49 The restraining portion 313a extends toward the first bottom 511, and a restraining space is formed between the restraining portion 313a of the stop 310 located at the restraining position and the first bottom 511 of the clamp arm 510; see reference Figure 24 When the clamp 210 is in the ready position, the protrusion 211 is accommodated in the constraint part 313a. The constraint part 313a, which extends in the direction of the first bottom 511, can limit the protrusion 211 at the far end of the constraint space to prevent the protrusion 211 from falling off beyond the far end of the clamp arm 510 when the clamp 210 moves to the far side, thereby further improving the stability of the clamping action.

[0097] Reference Figure 47 A limiting groove 511a is provided on the far side of the first bottom 511, as shown in the figure. Figure 11 and Figure 24When the clip 210 is in the ready position, the protrusion 211 is accommodated in the limiting groove 511a. The proximal wall of the limiting groove 511a can restrict the protrusion 211 from moving proximally, and the distal wall of the limiting groove 511a can restrict the protrusion 211 from moving distally. That is, when the clip 210 reaches the ready position, the cooperation between the limiting groove 511a and the protrusion 211 can keep the clip 210 stably in the ready position. When the stop 310 moves to the disengagement position, the clip 210 will not move with the stop 310, which helps to improve the stability of the clip 210.

[0098] Reference Figure 24 , Figure 25 , Figure 26-C and Figure 26-D The first side portion 512 of the clamp arm 510 has a first sliding groove 512a, and the second side portion 312 of the stop member 310 has a first protrusion 312a. When the stop member 310 moves relative to the clamp arm 510, the first protrusion 312a moves inside the first sliding groove 512a. The first sliding groove 512a connects a first groove segment 512b and a second groove segment 512c sequentially from the distal side to the proximal side. The width of the first groove segment 512b is greater than the width of the second groove segment 512c. Taking the first stop member 310a and the first clamp arm 510a as an example, refer to... Figure 24 and Figure 26-C When the clamp 210 reaches the ready position and the stop 310 is in the constrained position, the first protrusion 312a is located in the first groove 512b, and the constrained portion 313a is located on the far side of the protrusion 211. When the first stop 310a moves from the constrained position to the disengaged position, the stop 310 moves away from the first clamp arm 510a relative to the protrusion 211 so that the constrained portion 313a bypasses the protrusion 211. At this time, the first protrusion 312a moves in the width direction of the first groove 512b, and the wider first groove 512b can provide sufficient room for the stop 310 to move. (Refer to...) Figure 25 and Figure 26-D When the constraint part 313a passes around the protrusion 211, the first protrusion 312a enters the second groove 512c. Compared with when the first protrusion 312a is located in the first groove 512b, the movable space of the first protrusion 312a in the width direction of the second groove 512c is reduced. At this time, the first stop 310a is not easy to shake relative to the first clamp arm 510a in the width direction, which is conducive to improving the stability of the stop 310 in the disengagement position.

[0099] Reference Figure 24 , Figure 25 , Figure 26-A and Figure 26-BThe clamp arm 510 has a second sliding groove 512d extending along the length direction of the clamp arm 510, and the stop member 310 has a second protrusion 312b. In the width direction of the clamp arm 510, the second protrusion 312b is limited by the inner walls of both sides of the second sliding groove 512d. When the stop member 310 moves relative to the clamp arm 510, the second protrusion 312b moves inside the second sliding groove 512d, which helps to reduce the swaying of the stop member 310 in the width direction of the clamp arm 510 and provides guidance for the sliding of the stop member 310, thereby improving the stability of the stop member 310.

[0100] The following combination Figures 19 to 22 , Figures 27 to 29-C , Figures 42 to 45 , Figures 50 to 58 The operation of the drive structure 400 in the clamping clamp provided in some embodiments of this disclosure is described. It should be noted that the following content is merely illustrative and not intended to limit the scope of this disclosure; Figures 50 to 58 For simplicity, the components in the stop assembly 300 are not shown.

[0101] The trigger 400B has an open position, a middle position, and a closed position.

[0102] When trigger 400B moves from the open position to the intermediate position, the clamping caliper performs a clamping action, that is, refer to Figures 3 to 5 , Figures 8 to 11 , Figures 14 to 15-A , Figures 19 to 21 The trigger 400B drives the clamp body assembly 400A to move. The clamp body assembly 400A drives the clamp 210 to enter the jaw assembly 500 from the clamping chamber 200 and move to the ready position in the jaw assembly 500. The jaw assembly 500 remains open. The clamp body assembly 400A drives the transmission unit 320 to move the stop 310 from the disengaged position to the restrained position. The protrusion 211 moves to the far side in the guide space 330. When trigger 400B moves from the intermediate position to the closed position, the clamping pliers perform the clamping action, that is, refer to... Figures 5 to 7 , Figures 11 to 13 , Figures 15-A to 17-B , Figures 21 to 22 The trigger 400B drives the clamp body assembly 400A to continue moving, and the clamp body assembly 400A drives the jaw assembly 500 to move from the open state to the closed state. The clamp 210, which is in the ready position, is compressed to the closed position, and the transmission unit 320 drives the stop 310 to move from the restrained position to the proximal position to the disengagement position, so that the stop 310 disengages from the protrusion 211, thereby putting the clamp 210 in a state that can be disengaged from the jaw assembly 500.

[0103] Reference Figure 28 , Figures 50 to 55The third bottom 201 of the clamping chamber 200 has multiple limiting barbs 203 along its length direction. The clamping chamber 200 has multiple stations for placing clamps 210 along its length direction, and each station has a limiting barb 203. Each limiting barb 203 is inclined from the bottom 203 of the clamping chamber 200 toward the distal end of the clamping chamber 200 and toward the interior of the clamping chamber 200. The proximal end of each limiting barb 203 is fixed to the bottom 203, and the distal end is movable. The distal end of the limiting barb 203 is an inclined end. In this embodiment, the limiting barb 203 is an elastic piece with the distal end raised.

[0104] Reference Figure 50 , Figure 52 and Figure 54 When the clamp 210 is installed in the clamping chamber 200, the distal end of each limiting barb 203 abuts against the second protrusion 211b of the clamp 210 on the proximal side. The limiting barb 203 prevents the clamp 210 from moving from the current station to the adjacent station in the clamping chamber 200. When the clamp 210 moves axially to the distal side, the clamp 210 slides into contact with the limiting barb 203 of its distal adjacent station, pressing the limiting barb 203 against the third bottom 201 of the clamping chamber 200. Thus, the clamp 210 can smoothly pass through the limiting barb 203 and enter the distal adjacent station from the current station.

[0105] Reference Figure 28 , Figure 50 , Figure 52 and Figure 54 The clamping mechanism 420 is installed on the opposite side of the third bottom 201 of the clamping chamber 200. The clamping mechanism 420 has a plurality of push barbs 421 along its length direction. When the clamp 210 is installed in the clamping chamber 200, each push barb 421 corresponds to a clamp 210. Each push barb 421 is inclined from the third bottom 201 of the clamping mechanism 420 toward the distal end of the clamping mechanism 420 and toward one side of the clamping mechanism 420. The proximal end of each push barb 421 is fixed to the clamping mechanism 420, and the distal end is movable. The distal end of the push barb 421 is an inclined end. When the clamping mechanism 420 is installed in the clamping clamp, the push barb 421 is inclined toward the interior of the clamping chamber 200. In this embodiment, the push barb 421 is an elastic piece with the distal end raised.

[0106] Reference Figure 50 , Figure 52 and Figure 54When the clip 210 is installed in the clip chamber 200, the distal end of each pushing barb 421 is located near the second protrusion 211b of the clip 210. When the clamping mechanism 420 moves to the distal side, the distal end of each pushing barb 421 abuts against the proximal side of the second protrusion 211b of a clamp 210, causing multiple clamps 210 to move to the distal side simultaneously until each clamp 210 moves from the current station to the adjacent station at the distal side, and the distal end of the limiting barb 203 of the adjacent station at the distal side abuts against the proximal side of the second protrusion 211b of the clamp 210; then the clamping mechanism 420 moves to the proximal side, the pushing barb 421 abuts against the clamp 210 and is squeezed by the clamp 210, so that the pushing barb 421 is pressed against the clamping mechanism 420, thereby pushing the barb 421 to move to the proximal side along the side of the clamp 210, so that the pushing barb 421 can pass smoothly through the clamp 210 and reset.

[0107] Reference Figure 28 The distal end of the clamping mechanism 420 is provided with an ejection part 423; see reference. Figure 19 , Figure 42 and Figure 51 When the trigger 400B is in the open position, the ejector 423 is located near the farthest clamp 210 in the magazine 200; see reference Figures 20 to 22 , Figures 43 to 45 and Figure 53 In response to the trigger 400B moving from the open position to the middle position, the clamping mechanism 420 moves to the distal side, causing the push-out part 423 to abut against the farthest clamp 210 in the clamping magazine 200 and push the farthest clamp 210 in the clamping magazine 200 into the jaw assembly 500.

[0108] Reference Figures 27 to 29-C , Figures 56 to 58 The clamping mechanism 420 is movably connected to the push rod 410 and movably connected to the housing 100. The housing 100 includes a structure for limiting the range of motion of the clamping mechanism 420. The clamp assembly 400 includes a first reset member 450 arranged axially. The first reset member 450 may be a spring. The distal end of the first reset member 450 abuts against the clamping mechanism 420, and the proximal end abuts against the push rod 410. When the trigger 400B is in the open position, the length of the first reset member 450 is its original length. The first reset member 450 is configured to maintain its original length when the trigger 400B moves from the open position to the intermediate position, so that the clamping mechanism 420 and the push rod 410 move synchronously. When the trigger 400B moves from the intermediate position to the closed position, the first reset member 450 is compressed, so that the push rod 410 moves relative to the clamping mechanism 420. (Refer to...) Figures 29-A to 29-B , Figures 56 to 57During the movement of trigger 400B from the open position to the intermediate position, the clamping mechanism 420 is not limited, so the first reset member 450 maintains its original length, causing the clamping mechanism 420 and the push rod 410 to move synchronously to the distal side, so that a clamp 210 enters the jaw assembly 500; when trigger 400B reaches the intermediate position, refer to Figure 29-B and Figure 57 The clamping mechanism 420 is stopped and cannot continue to move relative to the housing 100; then refer to Figures 29-B to 29-C , Figures 57 to 58 During the process of the trigger 400B moving from the middle position to the closed position, the clamping mechanism 420 no longer moves to the distal side, and the push rod 410 continues to move to the distal side and abuts against the clamping drive tube 430, so that the clamping drive tube 430 drives the sleeve 440 to move to the distal side to close the jaw assembly 500. At this time, the first reset member 450 is compressed; when the trigger 400B is no longer subjected to external force, the first reset member 450 returns to its original length.

[0109] Reference Figures 29-A to 29-C , Figures 56 to 58 The push rod 410 has an axially extending receiving cavity 414 inside, in which the proximal end of the clamping mechanism 420 is received. The first reset member 450 is also received in the receiving cavity 414, with one end abutting against the proximal end of the clamping mechanism 420 and the other end abutting against the inner wall of the receiving cavity 414. This structural layout is relatively reasonable and helps save space occupied by the clamp body assembly 400.

[0110] Reference Figure 27 and Figure 28 The clamp assembly 400 also includes a limiting member 480, the push rod 410 has a first limiting groove 411 extending axially, and the clamping mechanism 420 has a second limiting groove 422 extending axially. (Refer to...) Figures 56 to 58 The limiting member 480 is connected to the housing 100 and fixed relative to the housing 100. The limiting member 480 passes through the first limiting groove 411 and the second limiting groove 422.

[0111] Reference Figure 29-A and Figure 56 When the trigger 400B is in the open position, the distal inner wall of the first limiting groove 411 abuts against the limiting member 480, and the distal inner wall of the second limiting groove 422 abuts against the limiting member 480; see reference. Figure 29-B and Figure 57 When the trigger 400B is in the middle position, the limiting member 480 is located between the distal inner wall and the proximal inner wall of the first limiting groove 411, and the proximal inner wall of the second limiting groove 422 abuts against the limiting member 480. At this time, the clamping mechanism 420 cannot continue to move distally relative to the housing 100, but the push rod 410 can continue to move distally relative to the housing 100; see reference. Figure 29-Cand Figure 58 When the trigger 400B is in the closed position, the proximal inner wall of the first limiting groove 411 abuts against the limiting member 480, at which point the push rod 410 can no longer move distally relative to the housing 100. The cooperation between the limiting member 480 and the first limiting groove 411 and the second limiting groove 422 can limit the range of motion of the push rod 410 and the clamping mechanism 420, thereby improving the stability of the operation.

[0112] Reference Figure 28 The push rod 410 includes a first push part 412 and a second push part 413. The first push part 412 has a receiving cavity 414, and the second push part 413 has a first limiting groove 411. The proximal end of the second push part 413 is received in the receiving cavity 414. The proximal end of the clamping mechanism 420 is provided with an abutment part 424, which is bent to form a hook shape. The abutment part 424 is received in the receiving cavity 414. (See reference...) Figures 29-A to 29-B During the movement of trigger 400B from the open position to the intermediate position, the abutment part 424 abuts against the proximal end of the second push part 413; refer to Figure 29-C During the process of the trigger 400B moving from the middle position to the closed position, the abutment part 424 separates from the proximal end of the second push part 413.

[0113] Reference Figure 28 The clamping drive tube 430 has a third limiting groove 431 extending axially. In some embodiments, both the first clamping drive tube 430a and the second clamping drive tube 430b have the third limiting groove 431. (Refer to...) Figures 29-A to 29-C , Figures 56 to 58 The limiting component 480 is inserted into the two third limiting grooves 431.

[0114] Reference Figure 29-A , Figure 29-B , Figure 56 and Figure 57 When the trigger 400B is in the open position and in the intermediate position, the distal inner wall of the third limiting groove 431 abuts against the limiting member 480; refer to Figure 29-C and Figure 58 When the trigger 400B is in the closed position, the proximal inner wall of the third limiting groove 431 abuts against the limiting member 480, at which point the clamping drive tube 430 cannot continue to move distally relative to the housing 100. The cooperation between the limiting member 480 and the third limiting groove 431 can limit the range of motion of the clamping drive tube 430 and improve the stability of the action.

[0115] Reference Figures 56 to 58The clamp assembly 400 also includes a second reset member 460, which may be a spring. The second reset member 460 is axially disposed and sleeved on the push rod 410. The distal end of the second reset member 460 abuts against the housing 100, and the proximal end abuts against the push rod 410. The second reset member 460 is configured to store energy when the push rod 410 moves distally, and release the energy by restoring its deformation, thereby providing power for the reset of the push rod 410.

[0116] Reference Figures 56 to 58 The clamp assembly 400 also includes a third reset member 470, which may be a spring. The third reset member 470 is axially disposed and sleeved on the clamping drive tube 430. The distal end of the third reset member 470 abuts against the housing 100, and the proximal end abuts against the clamping drive tube 430. The third reset member 470 is configured to store energy when the clamping drive tube 430 moves distally, and release the energy when the third reset member 470 recovers its deformation, thereby providing power for the reset of the clamping drive tube 430.

[0117] In summary, in the clamping device disclosed herein, the movement of the moving component 321 to the distal side and the movement to the proximal side are both actively driven by the drive structure 400. That is, the movement of the stop component 310 to the distal side and the movement to the proximal side are both actively driven by the drive structure 400. The stop component 310 has high operational reliability and will not cause operational errors due to incomplete movement of the stop component 310. Therefore, the clamping device has high operational reliability.

[0118] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0119] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this disclosure and are not intended to limit the scope of protection of this disclosure. All equivalent implementations or modifications made without departing from the spirit of the art of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A clamping pliers, characterized in that, Includes housing, clamping chamber, stop assembly, drive structure and jaw assembly; The clamping compartment is connected to the housing, and the clamping compartment includes a clamp, the clamp including a protrusion; The drive structure includes a clamp body assembly and a trigger. The clamp body assembly is movably connected to the housing. The clamp body assembly includes a clamping mechanism and a clamping mechanism. The trigger is movably connected to the housing. The trigger is configured to move relative to the housing to drive the clamping mechanism and the clamping mechanism to move. The jaw assembly includes a jaw arm movably connected to the clamping chamber, the jaw arm being configured to move relative to the clamping chamber under the drive of the clamping mechanism to close or open the jaw assembly; The stop assembly includes a stop member for constraining the protrusion and a transmission unit. The stop member is movably disposed on the clamp arm and has a constrained position and a disengaged position. The constrained position is located distal to the disengaged position. The transmission unit is connected to the clamp body assembly and includes a moving component and a conversion component. The moving component is connected to the stop member and is configured to move along the axial direction of the clamp body assembly. The clamping mechanism or the trigger cooperates with the conversion component, and the moving component cooperates with the conversion component. In response to the trigger action to drive the clamping mechanism to move distally so that the clamp enters the jaw assembly from the clamping chamber, the drive structure drives the moving assembly to move distally so that the stop moves distally to the restrained position. In response to the trigger continuing to move to drive the clamping mechanism to move distally so that the jaw assembly moves from the open state to the closed state, the drive structure drives the conversion member to move, so that the conversion member drives the moving assembly to move proximally so that the stop member moves proximally to the disengaged position.

2. The clamping pliers according to claim 1, characterized in that, The conversion element is rotatably connected to the housing, and the rotation axis of the conversion element is perpendicular to the axial direction of the clamp body assembly. The conversion element includes a first transmission part and a second transmission part. The first transmission part is located on one side of the rotation axis of the conversion element, and the second transmission part is located on the other side of the rotation axis of the conversion element. The clamping mechanism or the trigger cooperates with the first transmission part, and the moving assembly cooperates with the second transmission part. In response to the trigger driving the clamping mechanism to move distally, the clamping mechanism and the components in the trigger that cooperate with the first transmission part drive the conversion member to rotate, so that the conversion member drives the moving assembly to move proximally.

3. The clamping pliers according to claim 2, characterized in that, The clamping mechanism and the trigger, which cooperate with the first transmission part, are provided with a first pushing wall; In response to the trigger causing the clamping mechanism to move distally, the first pushing wall abuts against the first transmission part axially in the clamp body assembly to push the conversion member to rotate, thereby causing the moving assembly to move proximally to drive the stop member to move proximally.

4. The clamping pliers according to claim 3, characterized in that, In response to the trigger causing the clamping mechanism to move distally, the first pushing wall abuts against the proximal side of the first transmission part to cause the conversion member to rotate.

5. The clamping pliers according to claim 4, characterized in that, The transmission unit further includes a floating element disposed between the conversion element and the housing, the floating element being configured to provide the conversion element with a force axially protruding toward the clamp assembly along the rotation axis of the conversion element; When the first pushing wall abuts against the conversion member, the first pushing wall is inclined relative to the axial direction of the clamp body assembly and also inclined relative to the axial direction of the rotation axis of the conversion member; In response to the trigger causing the clamping mechanism to move distally, the first push wall abuts against the proximal side of the first transmission part, causing the conversion member to rotate, and the first transmission part slides relative to the first push wall, causing the conversion member to move away from the clamp body assembly along its rotation axis.

6. The clamping pliers according to claim 5, characterized in that, In response to the trigger driving the clamping mechanism to move distally, the switching member rotates and moves axially along its rotation axis, causing the first transmission part to slide relative to the first push wall until the switching member disengages from the first push wall; In response to the trigger driving the clamping mechanism to continue moving distally, the switching member remains stationary relative to the housing, so that the stop member remains stationary relative to the clamp arm.

7. The clamping pliers according to claim 3, characterized in that, The first transmission part includes a plurality of first teeth, which are arranged circumferentially along the conversion member; The clamping mechanism that cooperates with the conversion element is provided with a plurality of second teeth, which are arranged along the axial direction of the clamp body assembly; or, the trigger that cooperates with the conversion element is provided with a plurality of second teeth, which are arranged sequentially around the rotation axis of the trigger; the second teeth have the first push wall. In response to the trigger causing the clamping mechanism to move distally, the first tooth engages with the second tooth to drive the conversion member to rotate, and the first push wall of at least one of the second teeth abuts against the first tooth.

8. The clamping pliers according to claim 7, characterized in that, In response to the trigger driving the clamping mechanism to move distally, the first tooth engages with the second tooth to drive the conversion member to rotate until all the second teeth disengage from the first tooth; In response to the trigger driving the clamping mechanism to continue moving distally, the switching member remains stationary relative to the housing, so that the stop member remains stationary relative to the clamp arm.

9. The clamping pliers according to claim 7, characterized in that, The transmission unit further includes a floating element disposed between the conversion element and the housing, the floating element being configured to provide the conversion element with a force axially protruding toward the clamp assembly along the rotation axis of the conversion element; On the conversion member, a plurality of the first teeth are arranged sequentially along the circumference of the conversion member on a conical surface with the rotation axis of the conversion member as the central axis; And / or, On the clamping mechanism that cooperates with the conversion member, a plurality of second teeth are arranged sequentially along the axial direction of the clamp body assembly on an inclined surface that is axially inclined relative to the rotation axis of the conversion member and parallel to the axial direction of the clamp body assembly; or, on the trigger that cooperates with the conversion member, a plurality of second teeth are arranged sequentially around the rotation axis of the trigger on a conical surface with the axis of the trigger as the central axis.

10. The clamping pliers according to claim 2, characterized in that, The second transmission unit is movably connected to the moving component; In response to the trigger driving the clamping mechanism to move distally, the conversion member rotates, causing the second transmission unit to pull the moving component to move proximally.

11. The clamping pliers according to claim 10, characterized in that, The second transmission unit includes a mating shaft parallel to the rotation axis of the conversion member, and the moving assembly has a mounting groove in which the mating shaft is received so that the second transmission unit is rotatably connected to the moving assembly. In response to the trigger causing the clamping mechanism to move distally, the conversion member rotates such that the mating shaft abuts against the proximal inner wall of the mounting groove, thereby causing the moving assembly to move proximally.

12. The clamping pliers according to claim 1, characterized in that, The moving component includes a reset component and a connecting component. The reset component cooperates with the conversion component, and the connecting component is connected to the stop component. One of the connector and the reset member includes a first mating part, and the other includes a second mating part. The first mating part and the second mating part are configured to enter or disengage as the clamp body assembly moves. In response to the trigger driving the clamping mechanism to move distally, the connecting member moves distally to drive the stop member to move from the disengaged position to the constrained position, and the first mating part and the second mating part are in an unmatting state; In response to the trigger driving the clamping mechanism to move distally, the jaw assembly closes, the reset member moves proximally, and the first mating part and the second mating part are in a mating state, so that the reset member drives the stop member to move proximally to the disengaged position through the connecting member.

13. The clamping pliers according to claim 12, characterized in that, The second mating part has a groove extending axially along the clamp body assembly, and the first mating part is received in the groove; In response to the trigger driving the clamping mechanism to move distally, the first mating part moves distally inside the groove, and the first mating part gradually approaches the distal inner wall of the groove; In response to the trigger causing the clamping mechanism to move distally, the reset member moves proximally, and the first mating part abuts against the distal inner wall of the groove, so that the reset member drives the stop member to move proximally through the connector.

14. The clamping pliers according to claim 1, characterized in that, One of the clamping mechanism and the moving component includes a third mating part, and the other includes a fourth mating part; In response to the trigger causing the clamping mechanism to move distally, the third mating part engages with the fourth mating part, causing the moving component to move the stop from the disengaged position to the constrained position; in response to the trigger causing the clamping mechanism to continue moving distally, the third mating part disengages from the fourth mating part, and the clamping mechanism and the moving component slide relative to each other.

15. The clamping pliers according to claim 14, characterized in that, The third mating part has a mating structure; In response to the trigger driving the clamping mechanism to move distally, the fourth mating part abuts against the mating structure to make the third mating part engage with the fourth mating part, so that the clamping mechanism drives the moving component to move distally to drive the stop member to move from the disengaged position to the constrained position; In response to the trigger continuing to drive the clamping mechanism to move distally, the fourth mating part disengages from the mating structure, thereby disengaging the third mating part from the fourth mating part, and the clamping mechanism slides relative to the moving component.

16. The clamping pliers according to claim 15, characterized in that, The third mating part has a groove extending along the axial direction of the clamp body assembly; the clamping mechanism has an initial state and a moving state, and when the clamping mechanism is in the initial state, the fourth mating part is accommodated in the groove; In response to the trigger driving the clamping mechanism to move to the distal side, the clamping mechanism switches from the initial state to the moving state, and the groove moves relative to the fourth mating part until the mating structure abuts against the fourth mating part; In response to the trigger driving the clamping mechanism to continue moving distally, the clamping mechanism and the moving component move distally synchronously under the abutment action of the mating structure and the fourth mating part until the stop reaches the constraint position; In response to the trigger driving the clamping mechanism to continue moving distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the groove.

17. The clamping pliers according to claim 15, characterized in that, The third mating part has a mating groove; In response to the trigger driving the clamping mechanism to move to the distal side, the fourth mating part is embedded in the mating groove, and the mating structure abuts against the fourth mating part, causing the moving component to drive the stop member to move from the disengaged position to the constrained position; In response to the trigger driving the clamping mechanism to continue moving distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the mating groove.

18. The clamping pliers according to claim 17, characterized in that, In response to the trigger driving the clamping mechanism to move to the distal side, the fourth mating part and the mating groove move closer to each other until the fourth mating part is embedded in the mating groove and the mating structure abuts against the fourth mating part; In response to the trigger driving the clamping mechanism to continue moving distally, the clamping mechanism and the moving component move distally synchronously under the abutment action of the mating structure and the fourth mating part until the stop reaches the constraint position.

19. The clamping pliers according to claim 15, characterized in that, The third mating part has a mating protrusion, and the mating protrusion is the mating structure; In response to the clamping mechanism moving to the distal side, the fourth mating part abuts against the mating structure, and the clamping mechanism and the moving component move to the distal side synchronously under the abutment action of the fourth mating part and the mating structure until the stop member reaches the constraint position; In response to the clamping mechanism continuing to move distally, the stop is limited by the clamp arm and held in the constrained position, and the clamping mechanism continues to move distally, causing the fourth mating part to bypass the mating structure and disengage from the mating protrusion.

20. The clamping pliers according to any one of claims 15 to 19, characterized in that, The fourth mating part includes an elastic arm and a clutch part. The clutch part is connected to the elastic arm and protrudes toward the third mating part relative to the elastic arm. The elastic arm extends in a direction from the proximal side to the distal side. In response to the distal movement of the clamping mechanism, the engaging structure abuts against the clutch portion to cause the clamping mechanism and the moving assembly to move distally synchronously until the stop member reaches the constraint position; In response to the continued distal movement of the clamping mechanism, the elastic arm deforms, causing the clutch portion to bypass the mating structure.

21. The clamping pliers according to claim 1, characterized in that, The clamp arms are provided in two configurations, which are arranged relatively close to each other to close the jaw assembly; the stop members are provided in two configurations, which are movably connected to the two clamp arms in a one-to-one correspondence; the clamp includes two protrusions, and each stop member is used to constrain one of the protrusions.

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