clamping forceps

Abstract

The present disclosure discloses a clamping clamp, the clamping chamber of which includes a shielding structure connected to the bottom. The shielding structure is configured to abut against a limiting barb located in a first clearance position so that the surface of the limiting barb facing the storage space in the first clearance position is flush with the surface of the bottom facing the storage space, or to make the surface of the limiting barb facing the storage space in the first clearance position closer to the clamping mechanism than the surface of the bottom facing the storage space. The shielding structure can limit the range of deformation of the limiting barb to ensure that when the limiting barb is deformed to its maximum extent, the distal inner wall of the process groove will not be exposed on the movement path of the protrusion of the clamp, thereby avoiding the protrusion abutting against the distal inner wall of the process groove, thus preventing the clamping mechanism from jamming and reducing the failure rate of the clamping clamp.

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 clipping forceps consists of a clamping chamber and an end effector. The clamping chamber stores clips. A complete clipping process typically includes a clip delivery action and a clip application action. When using a clipping forceps, the forceps perform a clip delivery action to deliver the clips stored in the clamping chamber to the end effector. The forceps then perform a clip application action to drive the end effector to close, causing the clips in the end effector to close and clamp onto tissue or blood vessels, thereby blocking blood flow. 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 and a clamp body assembly;

[0006] The clamp body assembly is connected to the housing, and the clamp body assembly includes a clamping chamber and a clamping mechanism, the clamping mechanism being movably connected to the housing;

[0007] The clamping chamber includes a clamp, a bottom, limiting barbs, and a shielding structure;

[0008] The clip includes a protrusion;

[0009] The bottom is disposed opposite to the clamping mechanism, and a storage space for accommodating the clamp is formed between the bottom and the clamping mechanism. The bottom has a process groove.

[0010] The proximal end of the limiting barb is connected to the proximal side of the process groove. The limiting barb has a limiting position and a first clearance position after deformation from the limiting position toward the direction away from the clamping mechanism. Along the direction from near to far, the limiting barb located at the limiting position extends obliquely toward the direction closer to the clamping mechanism. The limiting barb located at the limiting position is configured to abut against the protrusion to prevent the clamp from moving to the proximal side. The limiting barb located at the first clearance position is configured to allow the clamp to move to the distal side.

[0011] The shielding structure is connected to the bottom and is configured to abut against the limiting barb located at the first clearance position so that the surface of the limiting barb facing the storage space at the first clearance position is flush with the surface of the bottom facing the storage space, or to make the surface of the limiting barb facing the storage space at the first clearance position closer to the clamping mechanism than the surface of the bottom facing the storage space.

[0012] For example, the thickness of the bottom is the same as the thickness of the limiting barb.

[0013] For example, the surface of the shielding structure near the feeding mechanism is flush with the bottom surface away from the feeding mechanism, and the shielding structure is configured to abut against the limiting barb located in the first avoidance position so that the surface of the limiting barb in the first avoidance position facing the storage space is flush with the surface of the bottom facing the storage space.

[0014] For example, the shielding structure includes a mounting part and a shielding part connected to the mounting part, wherein the mounting part is connected to the bottom;

[0015] The blocking portion is fixed relative to the bottom. In response to the limiting barb deforming to the first avoidance position, the limiting barb abuts against the blocking portion; or, the blocking portion is movably connected to the mounting portion. In response to the limiting barb deforming from the limiting position towards the first avoidance position, the limiting barb abuts against the blocking portion, causing the blocking portion to move; in response to the blocking portion moving to the stop position, the limiting barb reaches the first avoidance position.

[0016] For example, the shielding portion is located at the far end of the process groove, and the shielding portion is configured to abut against the far end of the limiting barb located at the first avoidance position.

[0017] For example, the storage space includes at least two workstations arranged sequentially along the axial direction of the clamp body assembly, each workstation being configured to store one clamp; the bottom has at least two process grooves arranged sequentially along the axial direction of the clamp body assembly, each workstation corresponding to one process groove, and a limiting barb corresponding to the proximal side of each process groove; the clamping clamp also includes a jaw assembly connected to the distal end of the clamp body assembly;

[0018] In response to the clamping mechanism moving distally relative to the clamping chamber, the clamp in the furthest station is driven to move toward the jaw assembly, and the clamps in the remaining stations are pushed by the clamping mechanism to move toward their adjacent stations distally. The limiting barbs of the adjacent stations distally are abutted by the protrusions of the clamps and deform from the limiting position to the first clearance position.

[0019] In response to the clamping mechanism continuing to move distally relative to the clamping chamber, the clamp in the farthest station is driven into the jaw assembly, and the clamps in the remaining stations are pushed by the clamping mechanism into their distal adjacent stations. The protrusion of the clamp disengages from the limiting barb of the distal adjacent station and reaches its distal side, thereby restoring the limiting barb from the first avoidance position to the limiting position.

[0020] For example, the clamping mechanism includes a main body and at least two pushing parts, each of the pushing parts being connected to the main body at its proximal end, the pushing part having a pushing position, and the pushing part located at the pushing position extending obliquely towards the bottom in a direction from proximal to distal; each clamp in the clamping chamber corresponds to one of the pushing parts;

[0021] In response to the clamping mechanism moving distally relative to the clamping chamber, the pushing part abuts against the protrusion of the clamp to move the clamp toward the distally adjacent workstation and enter the distally adjacent workstation.

[0022] For example, the pushing part also has a second avoidance position after deforming from the pushing position in a direction away from the bottom;

[0023] In response to the clamping mechanism moving proximally relative to the clamping chamber, the pushing part is abutted by the protrusion of the clamp and deforms from the pushing position to the second abutment position;

[0024] In response to the clamping mechanism continuing to move proximally relative to the clamping chamber, the pushing part disengages from the protrusion of the clamp and reaches its proximal side, thereby restoring the pushing part from the second avoidance position to the pushing position.

[0025] For example, the clamping mechanism includes a main body and an ejection part, wherein the ejection part is connected to the distal end of the main body;

[0026] In response to the clamping mechanism moving distally relative to the clamping chamber, the clamp located at the furthest workstation is pushed towards the jaw assembly by the push-out portion;

[0027] In response to the clamping mechanism continuing to move distally relative to the clamping chamber, the clamp located at the furthest workstation is pushed into the jaw assembly by the push-out portion.

[0028] For example, the clamping pliers also include a power source mounted on the housing and drivably connected to the clamping mechanism.

[0029] For example, the clamp body assembly further includes a push rod, a clamping mechanism, and a first elastic element. The power source is drivably connected to the push rod, the clamping mechanism is movably connected to the push rod, one end of the first elastic element is connected to the push rod, and the other end is connected to the clamping mechanism. The clamping mechanism is sleeved on the clamping chamber and the clamping mechanism, and the clamping mechanism is movably connected to the housing.

[0030] In response to the power source driving the push rod to move distally, the push rod pushes the clamping mechanism distally through the first elastic element until the clamping mechanism is limited, so that the clamp enters the jaw assembly from the clamping chamber;

[0031] In response to the power source driving the push rod to continue moving distally, the first elastic element stores energy, and the push rod pushes against the clamping mechanism to move the clamping mechanism distally, thereby closing the jaw assembly.

[0032] For example, the clamp body assembly further includes a first limiting member, and the clamping mechanism has a first limiting groove extending along the axial direction of the clamp body assembly, the first limiting member being connected to the housing and passing through the first limiting groove;

[0033] In response to the power source driving the push rod to move distally, the push rod pushes the clamping mechanism distally through the first elastic member, thereby causing the first limiting groove to move distally relative to the first limiting member until the proximal inner wall of the first limiting groove abuts against the first limiting member to limit the clamping mechanism. Attached Figure Description

[0034] Figure 1 This is a perspective view of the clamping forceps provided in an embodiment of the present disclosure;

[0035] Figure 2 for Figure 1 A three-dimensional schematic diagram of the clamp body assembly and jaw assembly of the clamping forceps shown;

[0036] Figure 3 for Figure 2 An exploded view of the clamp body assembly and jaw assembly shown;

[0037] Figure 4 for Figure 3 A three-dimensional schematic diagram of the clamping chamber of the clamping body assembly shown;

[0038] Figure 5 for Figure 3 A three-dimensional schematic diagram of the clamp body assembly shown;

[0039] Figure 6 for Figure 2 The cross-sectional view of a portion of the clamp body assembly and jaw assembly shown shows that the push rod has not yet driven the clamp feeding mechanism.

[0040] Figure 7 for Figure 6 A cross-sectional view of a portion of the jaw assembly and body assembly shown from another direction;

[0041] Figure 8 for Figure 2 The cross-sectional view of a portion of the jaw assembly and jaw assembly shown shows that the push rod has driven the clamping mechanism to move so that a clamp enters the jaw assembly;

[0042] Figure 9 for Figure 8 A cross-sectional view of a portion of the jaw assembly and body assembly shown from another direction;

[0043] Figure 10 for Figure 2 The cross-sectional view of a portion of the clamp body assembly and jaw assembly shown shows that the push rod has driven the clamping mechanism to move until the jaw assembly is closed;

[0044] Figure 11 for Figure 10 A cross-sectional view of a portion of the jaw assembly and body assembly shown from another direction;

[0045] Figure 12 for Figure 2 The cross-sectional view of a portion of the clamp body assembly and jaw assembly shown indicates that the limiting barb is in the limiting position and the pushing part is in the pushing position.

[0046] Figure 13 for Figure 2 The cross-sectional view of a portion of the clamp body assembly and the jaw assembly shown indicates that the limiting barb is in the first clearance position and the pushing part is in the pushing position.

[0047] Figure 14 A cross-sectional view of a portion of the clamping clamp where the clamping mechanism jams due to the lack of a shielding structure.

[0048] Figure 15 for Figure 2The cross-sectional view of a portion of the clamp body assembly and the jaw assembly shown indicates that the limiting barb is located in the limiting position and the pushing part is located in the second avoidance position.

[0049] Figure 16-A The diagram shows the bottom of the clamping chamber, the limiting barbs, and the shielding structure of the clamping clamp provided for some other embodiments of this disclosure, wherein the limiting barbs abut against the shielding structure but have not yet reached the first avoidance position;

[0050] Figure 16-B for Figure 16-A The diagram shows the bottom, the limiting barb and the shielding structure, wherein the limiting barb reaches the first avoidance position and the shielding part reaches the stop position;

[0051] Figure 17-A for Figure 2 The cross-sectional view of a portion of the clamp body assembly shown shows that the push rod has not yet driven the clamp feeding mechanism.

[0052] Figure 17-B for Figure 2 The cross-sectional view of a portion of the jaw assembly shown shows that the push rod has driven the clamp feeding mechanism to move a clamp into the jaw assembly;

[0053] Figure 17-C for Figure 2 A cross-sectional view of a portion of the jaw assembly shown, in which the push rod has driven the clamping mechanism to close the jaw assembly;

[0054] Figure 18 for Figure 1 The cross-sectional view of a portion of the clamping clamp shown shows that the push rod has not yet driven the clamping mechanism to move;

[0055] Figure 19 for Figure 1 The diagram shows a partial cross-sectional view of the clamping jaws, where the push rod has driven the clamping mechanism to move a clamp into the jaw assembly;

[0056] Figure 20 for Figure 1 The diagram shows a cross-sectional view of a portion of the clamping jaws, where the push rod has driven the clamping mechanism to close the jaw assembly.

[0057] The reference numerals in the above figures are:

[0058] 100 - Housing;

[0059] 200-Clamp body assembly, 210-Clamping chamber, 211-Clamp, 211a-Protrusion, 211b-Clamping arm, 211c-Connecting part, 211d-Engaging part, 211e-Ear, 212-Bottom, 212a-Process groove, 213-Limiting barb, 214-Shielding structure, 214a-Mounting part, 214b-Shielding part, 215-Side part, 220-Clamping mechanism, 221-Main body, 222-Pushing part, 223-Ejection part, 224-First limiting groove, 225-Abutting part, 230-Push rod, 231-Second limiting groove, 232 - First pushing part, 233- Second pushing part, 234- Receiving cavity, 235- Pushing surface, 240- Clamping mechanism, 241- Clamping drive tube, 241a- First clamping drive tube, 241b- Second clamping drive tube, 241c- Third limiting groove, 241d- Fourth limiting groove, 241e- Snap-fit ​​protrusion, 241f- Abutting end, 242- Sleeve, 242a- Fifth limiting groove, 242b- Snap-fit ​​groove, 250- First elastic element, 260- First limiting element, 270- Second elastic element, 280- Third elastic element, 290- Second limiting element;

[0060] 300 - Jaw assembly, 310 - Jaw arm;

[0061] 400 - Power Source. Detailed Implementation

[0062] 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.

[0063] 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.

[0064] 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.

[0065] The term "axial" refers to the length direction of the clamp body assembly 200.

[0066] Reference Figure 1 This disclosure provides a clamping tool, including a housing 100 and a clamp body assembly 200, the clamp body assembly 200 being connected to the housing 100. (See also...) Figures 2 to 3 The clamp assembly 200 includes a clamping chamber 210 and a clamping mechanism 220, the clamping mechanism 220 being movably connected to the housing 100; see reference. Figure 4 The clamp 210 includes a clamp 211, a bottom 212, a limiting barb 213, and a shielding structure 214.

[0067] Reference Figure 5 The clip 211 includes a protrusion 211a.

[0068] Reference Figure 3 , Figures 6 to 11 The bottom 212 is disposed opposite to the clamping mechanism 220, and a storage space for accommodating the clamp 211 is formed between the bottom 212 and the clamping mechanism 220. For example, the clamping compartment 210 also includes two sides 215, both of which are connected to the bottom 212 and are disposed opposite to each other. The bottom 212, the two sides 215, and the clamping mechanism 220 together define the storage space. The bottom 212 has a process groove 212a.

[0069] Reference Figure 4 The proximal end of the limiting barb 213 is connected to the proximal side of the process groove 212a; the limiting barb 213 has a limiting position and a first clearance position after deformation from the limiting position toward the direction away from the clamping mechanism 220. Along the direction from near to far, the limiting barb 213 located at the limiting position extends obliquely toward the direction closer to the clamping mechanism 220, as shown in the reference. Figure 12 The limiting barb 213, located in the limiting position, is configured to abut against the protrusion 211a to prevent the clamp 211 from moving proximally, see reference. Figure 13The limiting barb 213 located in the first clearance position is configured to allow the clamp 211 to move distally. When the clamping mechanism 220 moves distally relative to the clamping chamber 210, the clamping mechanism 220 pushes the clamp 211 to move distally, and the clamp 211 abuts against the limiting barb 213 on its distal side, causing the limiting barb 213 to deform from the limiting position to the first clearance position; after the clamp 211 passes the limiting barb 213, the limiting barb 213 returns to the limiting position from the first clearance position.

[0070] Reference Figure 4 The shielding structure 214 is connected to the bottom 212. In some embodiments, refer to Figure 12 The shielding structure 214 is configured to abut against the limiting barb 213 located in the first avoidance position so that the surface of the limiting barb 213 facing the storage space in the first avoidance position is flush with the surface of the bottom 212 facing the storage space.

[0071] Reference Figure 14 If the shielding structure 214 is not provided, the limiting barb 213 will deform away from the clamping mechanism 220 due to the abutment of the clamp 211. Excessive deformation of the limiting barb 213 will cause the distal inner wall of the process groove 212a to be exposed on the movement path of the protrusion 211a of the clamp 211. Therefore, as the protrusion 211a moves distally, it will abut against the distal inner wall of the process groove 212a, causing the clamping mechanism 220 to jam and resulting in a malfunction of the clamping clamp. The clamping clamp provided in this embodiment is provided with a shielding structure 214, see reference... Figure 12 The shielding structure 214 can limit the range of deformation of the limiting barb 213, so as to ensure that when the limiting barb 213 is deformed to the maximum extent, the far inner wall of the process groove 212a will not be exposed on the movement path of the protrusion 211a of the clamp 211, thereby avoiding the protrusion 211a from abutting the far inner wall of the process groove 212a, so as to avoid the clamping mechanism 220 from getting stuck and reduce the failure rate of the clamping clamp.

[0072] In other embodiments, the shielding structure 214 may be configured to abut against the limiting barb 213 located in the first avoidance position, so that the surface of the limiting barb 213 facing the storage space is closer to the feeding mechanism 220 than the surface of the bottom 212 facing the storage space. This can also prevent the far inner wall of the process groove 212a from being exposed in the movement path of the protrusion 211a of the clamp 211, so as to prevent the feeding mechanism 220 from getting stuck.

[0073] Reference Figure 13 The thickness of the bottom 212 is the same as the thickness of the limiting barb 213. Therefore, the clamping chamber 210 can be manufactured by stamping. The process groove 212a and the limiting barb 213 are formed by stamping. The process is simple, the production efficiency is high, and the production cost is low.

[0074] Reference Figure 13The surface of the shielding structure 214 near the clamping mechanism 220 is flush with the surface of the bottom 212 away from the clamping mechanism 220. For example, the shielding structure 214 can be connected to the side of the bottom 212 away from the clamping mechanism 220. Thus, when the limiting barb 213 deforms to abut against the shielding structure 214, the surface of the limiting barb 213 facing the storage space is flush with the surface of the bottom 212 facing the storage space. The movement path of the protrusion 211a of the clamp 211 is flat, the movement resistance is small, the operation of the clamp is labor-saving, and the convenience is high.

[0075] The shielding structure 214 can take many forms. In some embodiments, refer to Figure 12 and Figure 13 The shielding structure 214 includes a mounting part 214a and a shielding part 214b connected to the mounting part 214a. The mounting part 214a is connected to the bottom 212 of the clamping chamber 210. The shielding part 214b is fixed relative to the bottom 212. When the limiting barb 213 is deformed to the first avoidance position under the abutment of the protrusion 211a, the limiting barb 213 abuts against the shielding part 214b.

[0076] In other embodiments, reference is made to Figure 16-A and Figure 16-B The shielding portion 214b is movably connected to the mounting portion 214a. For example, the shielding portion 214b and the mounting portion 214a can be movably connected by an elastic component, or the shielding portion 214b itself has deformability. When the limiting barb 213 is in the limiting position, the shielding portion 214b extends into the process groove 212a; when the limiting barb 213 deforms from the limiting position to the first clearance position, refer to... Figure 16-A The limiting barb 213 abuts against the blocking part 214b, causing the blocking part 214b to move; when the blocking part 214b reaches the stop position, refer to Figure 16-B The limit barb 213 reaches the first avoidance position.

[0077] Reference Figure 14 In abnormal circumstances, the distal end of the limiting barb 213 reaches the side of the bottom 212 away from the clamping mechanism 220, causing the distal inner wall of the process groove 212a to be exposed in the movement path of the protrusion 211a. Based on this, referring to Figure 13 The shielding part 214b is located at the far end of the process groove 212a. The shielding part 214b is configured to abut against the far end of the limiting barb 213 located in the first avoidance position. The shielding structure 214 can reliably prevent the far end of the limiting barb 213 from moving to the side of the bottom 212 away from the feeding mechanism 220. It is also small in size and occupies little space.

[0078] Reference Figures 6 to 11The storage space includes at least two workstations arranged sequentially along the axial direction of the clamp body assembly 200, each workstation being configured to store a clamp 211; the bottom 212 has at least two process grooves 212a arranged sequentially along the axial direction of the clamp body assembly 200, each workstation corresponding to a process groove 212a, and a limiting barb 213 corresponding to the proximal inner wall of each process groove 212a; the clamping mechanism 220 is configured to drive the clamp 211 from the storage space to the jaw assembly 300, for example, the jaw assembly 300 includes two clamp arms 310, and the clamping mechanism 220 is configured to drive the clamp 211 from the storage space to between the two clamp arms 310.

[0079] Reference Figure 6 , Figure 7 and Figure 13 In response to the clamping mechanism 220 moving to the far side relative to the clamping chamber 210, the clamp 211 in the farthest station is driven to move toward the jaw assembly 300, and the clamps 211 in the other stations are pushed by the clamping mechanism 220 to move toward their far adjacent stations. The limiting barb 213 of the far adjacent station is abutted by the protrusion 211a of the clamp 211 and deforms from the limiting position to the first avoidance position.

[0080] Reference Figure 8 , Figure 9 and Figure 12 In response to the clamping mechanism 220 continuing to move further away from the clamping chamber 210, the clamp 211 in the farthest station is driven into the jaw assembly 300, and the clamps 211 in the other stations are pushed by the clamping mechanism 220 into their far adjacent stations. The protrusion 211a of the clamp 211 disengages from the limiting barb 213 of the far adjacent station and reaches its far side, so that the limiting barb 213 returns from the first avoidance position to the limiting position.

[0081] The multiple stations of the clamping chamber 210 can store multiple clamps 211. When the clamping mechanism 220 moves to the far side relative to the clamping chamber 210, the farthest clamp 211 in the clamping chamber 210 enters the jaw assembly 300, and the remaining clamps 211 move to the far side by one station distance. By repeating the above process, multiple clamps 211 can be applied sequentially. The operation is simple and convenient.

[0082] Reference Figure 3 The clamping mechanism 220 includes a main body 221 and at least two pushing parts 222. Each pushing part 222 is connected to the main body 221 at its proximal end. The pushing part 222 has a pushing position, and along the direction from proximal to distal, the pushing part 222 at the pushing position extends obliquely towards the bottom 212. Each clamp 211 in the clamping magazine 210 corresponds to a pushing part 213. (See reference...) Figure 6 and Figure 8 , Figure 13 and Figure 12 In response to the clamping mechanism 220 moving to the distal side relative to the clamping chamber 210, the pushing part 222 pushes against the protrusion 211a of the clamp 211 to move the clamp 211 to its distal adjacent workstation and enter the distal adjacent workstation.

[0083] The propulsion unit 222 also has a second avoidance position after deforming from the propulsion position in a direction away from the bottom 212. (See reference...) Figure 15 In response to the clamping mechanism 220 moving closer to the clamping chamber 210, the pushing part 222 is abutted by the protrusion 211a of the clamp 211 and deforms from the pushing position to the second clearance position, so that the pushing part 222 can smoothly pass through the clamp 211; see reference Figure 12 In response to the continued movement of the clamping mechanism 220 toward the proximal side relative to the clamping chamber 210, the pushing part 222 disengages from the protrusion 211a of the clamp 211 and reaches its proximal side, thereby restoring the pushing part 222 from the second avoidance position to the pushing position.

[0084] The deformable pusher 222 can stably abut against the protrusion 211a of the clamp 211 when the clamping mechanism 220 moves to the far side, and can also deform by being abutted by the protrusion 211a of the clamp 211 when the clamping mechanism 220 moves to the near side to reset after clamping, so as to avoid the clamp 211, thereby realizing unidirectional drive of the clamp 211 in the clamping chamber 210.

[0085] Reference Figure 3 The clamping mechanism 220 includes a main body 221 and an ejection part 223, the ejection part 223 being connected to the distal end of the main body 221. (See reference...) Figure 7 and Figure 9 In response to the clamping mechanism 220 moving further away from the clamping chamber 210, the clamp 211 at the farthest position is pushed towards the jaw assembly 300 by the push-out part 223; in response to the clamping mechanism 220 continuing to move further away from the clamping chamber 210, the clamp 211 at the farthest position is pushed into the jaw assembly 300 by the push-out part 223. The clamping mechanism 220 simultaneously performs the functions of pushing the clamp 211 in the clamping chamber 210 forward one position and pushing the farthest clamp 211 into the jaw assembly 300. Therefore, by simply driving the clamping mechanism 220 to move further away, it is possible to simultaneously feed one clamp 211 into the jaw assembly 300 and advance the remaining clamps 211 one position, without separate operations. This results in fewer clamping components and a simpler operating logic.

[0086] Reference Figure 1 , Figures 18 to 20 The clamping pliers also include a power source 400, which is mounted in the housing 100 and is drivably connected to the clamping mechanism 220, for example, referring to... Figure 1 , Figures 18 to 20The power source 400 can be configured as a trigger, which is movably connected to the housing 100. The trigger can transmit power to the clamping mechanism 220 to make the clamping mechanism 220 move. For example, the power source 400 can also be configured as a motor, which drives the clamping mechanism 220 to move.

[0087] Reference Figure 3 The clamp assembly 200 also includes a push rod 230, a clamping mechanism 240, and a first elastic member 250. The power source 400 is drivably connected to the push rod 230, and the clamping mechanism 220 is movably connected to the push rod 230. One end of the first elastic member 250 is connected to the push rod 230 and the other end is connected to the clamping mechanism 220. The clamping mechanism 240 is sleeved on the clamping chamber 210 and the clamping mechanism 220, and the clamping mechanism 240 is movably connected to the housing 100.

[0088] Reference Figures 17-A to 17-B , Figures 18 to 19 , Figures 6 to 9 In response to the power source 400 driving the push rod 230 to move distally, the clamping mechanism 220 is not yet limited, the first elastic element 250 maintains its initial length, and the push rod 230 pushes the clamping mechanism 220 distally through the first elastic element 250 until the clamping mechanism 220 is limited, so that the clamp 211 enters the jaw assembly 300 from the clamping chamber 210; see reference Figures 17-B to 17-C , Figures 19 to 20 , Figures 8 to 11 In response to the power source 400 driving the push rod 230 to continue moving to the distal side, the clamping mechanism 220 can no longer move to the distal side. The push rod 230 continues to move to the distal side, causing the first elastic element 250 to store energy. The push rod 230 pushes against the clamping mechanism 240 to make the clamping mechanism 240 move to the distal side, thereby closing the jaw assembly 300.

[0089] During the process described above, as the push rod 230 moves to the distal side, the clamping mechanism 220 is first driven to move to the distal side to complete the clamping action, and then the clamping mechanism 240 is driven to move to the distal side to complete the clamping action. That is, the push and close of the clamp 211 can be completed by driving only one component. When using the clamping pliers, the user only needs to operate one component, which helps to reduce the difficulty of operation.

[0090] Furthermore, if the protrusion 211a of clamp 211 abuts against the far inner wall of process groove 212a, causing clamping mechanism 220 to be jammed while push rod 230 is still moving far away, the first elastic element 250 will store energy. When the force on the protrusion 211a reaches a certain level, the protrusion 211a may detach from the far inner wall of process groove 212a, causing clamping mechanism 220 to disengage from the jammed state. At this time, the energy stored in the first elastic element 250 will be released instantly, causing the farthest clamp 211 in clamping chamber 210 to fly out quickly, and the remaining clamps 211 in clamping chamber 210 will also move quickly and become disordered. In the above embodiment, the clamping clamp is provided with a shielding structure 214 that can prevent clamping mechanism 220 from jamming, thus avoiding the situation where the farthest clamp 211 in clamping chamber 210 flies out quickly, and the remaining clamps 211 in clamping chamber 210 also move quickly and become disordered.

[0091] Reference Figure 3 The clamp assembly 200 also includes a first limiting member 260, and the clamping mechanism 220 has a first limiting groove 224 extending axially along the clamp assembly 200, as shown in the reference. Figures 18 to 20 The first limiting member 260 is connected to the housing 100 and passes through the first limiting groove 224. (Refer to...) Figure 17-A and Figure 17-B , Figure 18 and Figure 19 In response to the power source 400 driving the push rod 230 to move distally, the push rod 230 pushes the clamping mechanism 220 distally via the first elastic member 250. This causes the first limiting groove 224 to move distally relative to the first limiting member 260 until the proximal inner wall of the first limiting groove 224 abuts against the first limiting member 260, thus limiting the clamping mechanism 220. The cooperation between the first limiting groove 224 and the first limiting member 260 ensures stable limiting of the clamping mechanism 220, resulting in high stability of the clamping action.

[0092] Reference Figure 3 The push rod 230 has a second limiting groove 231 extending axially along the clamp body assembly 200, and the clamping mechanism 240 has a third limiting groove 241c extending axially along the clamp body assembly 200. The first limiting member 260 passes through both the second limiting groove 231 and the third limiting groove 241c. (Refer to...) Figure 17-A and Figure 17-B , Figure 18 and Figure 19In response to the distal movement of the push rod 230, the push rod 230 pushes the clamping mechanism 220 distally via the first elastic member 250. Both the first limiting groove 224 and the second limiting groove 231 move distally relative to the first limiting member 260. At this time, the push rod 230 has not yet abutted against the clamping mechanism 240, therefore the clamping mechanism 240 has not yet moved. The third limiting groove 241c remains stationary relative to the first limiting member 260. When the proximal inner wall of the first limiting groove 224 abuts against the first limiting member 260, there is a gap between the inner walls of both ends of the second limiting groove 231 and the first limiting member 260. (Refer to...) Figure 17-B and Figure 17-C , Figure 19 and Figure 20 In response to the push rod 230 continuing to move distally, the second limiting groove 231 continues to move distally relative to the first limiting member 260. The push rod 230 pushes against the clamping mechanism 240, causing the third limiting groove 241c to move distally relative to the first limiting member 260 until the proximal inner wall of the second limiting groove 231 abuts against the first limiting member 260 and the third limiting groove 241c abuts against the first limiting member 260. The cooperation between the first limiting member 260 and the second limiting groove 231 can limit the movement stroke of the push rod 230, and the cooperation between the first limiting member 260 and the third limiting groove 241c can limit the movement stroke of the clamping mechanism 240, resulting in high stability of the clamping action.

[0093] Reference Figures 17-A to 17-C , Figures 18 to 20 The push rod 230 has a receiving cavity 234 extending axially along the clamp body assembly 200. The first elastic member 250 is received in the receiving cavity 234. One end of the first elastic member 250 abuts against the proximal end of the clamping mechanism 220, and the other end abuts against the inner wall of the receiving cavity 234. The receiving cavity 234 can provide a limit for the first elastic member 250 to improve structural stability.

[0094] Reference Figure 3 , Figures 17-A to 17-C , Figures 18 to 20 The push rod 230 includes a first push part 232 and a second push part 233. The first push part 232 has a receiving cavity 234, and the second push part 233 has a second limiting groove 231. The proximal end of the second push part 233 is received in the receiving cavity 234. The proximal end of the clamping mechanism 220 is provided with an abutment part 225. The abutment part 225 is bent relative to the main body 221 so that the proximal end of the clamping mechanism 220 forms a hook shape, and the abutment part 225 is received in the receiving cavity 234. (Refer to...) Figure 17-A and Figure 17-B , Figure 18 and Figure 19 When the push rod 230 drives the clamping mechanism 220 to move distally, the abutment portion 225 abuts against the proximal end of the second push portion 233; refer to Figure 17-C and Figure 20 When the push rod 230 drives the clamping mechanism 240 to move to the distal side, the abutment part 225 separates from the proximal end of the second push part 233.

[0095] Reference Figure 3 The clamping mechanism 240 includes a clamping drive tube 241 and a sleeve 242. For example, the clamping drive tube 241 includes a first clamping drive tube 241a and a second clamping drive tube 241b, which are fastened together to form the clamping drive tube 241. The clamping drive tube 241 is connected to the sleeve 242. For example, the clamping drive tube 241 is provided with a snap-fit ​​protrusion 241e, and the sleeve 242 is provided with a snap-fit ​​groove 242b. The snap-fit ​​protrusion 241e is embedded in the snap-fit ​​groove 242b to realize the connection between the clamping drive tube 241 and the sleeve 242.

[0096] Reference Figures 17-B to 17-C , Figures 8 to 11 The push rod 230 pushes the clamping drive tube 241 to move it distally. For example, the push rod 230 has a push surface 235, and the clamping drive tube 241 has an abutment end 241f. The push surface 235 abuts against the abutment end 241f to drive the clamping drive tube 241 to move distally. The sleeve 242 moves distally, and the jaw arm 310 is at least partially housed in the sleeve 242, thereby closing the jaw assembly 300.

[0097] Reference Figure 3 The clamping drive tube 241 has a fourth limiting groove 241d extending axially along the clamp body assembly 200, and the sleeve 242 has a fifth limiting groove 242a extending axially along the clamp body assembly 200. The clamp body assembly 200 also includes a second limiting member 290, which is connected to and fixed relative to the housing 100. The second limiting member 290 extends into the fourth limiting groove 241d and the fifth limiting groove 242a. In response to the clamping mechanism 240 moving distally, both the fourth limiting groove 241d and the fifth limiting groove 242a move relative to the second limiting member 290. The cooperation between the fourth limiting groove 241d, the fifth limiting groove 242a, and the second limiting member 290 guides the movement of the clamping mechanism 240.

[0098] Reference Figures 18 to 20 The clamp assembly 200 also includes a second elastic element 270, which may be a spring. The second elastic element 270 is axially disposed and sleeved on the push rod 230. The distal end of the second elastic element 270 abuts against the housing 100, and the proximal end abuts against the push rod 230. The second elastic element 270 is configured to store energy when the push rod 230 moves distally, and release the energy by restoring its deformation, thereby providing power for the push rod 230 to return to its original position.

[0099] Reference Figures 18 to 20The clamp assembly 200 also includes a third elastic element 280, which may be a spring. The third elastic element 280 is axially positioned and sleeved on the clamping drive tube 241. The distal end of the third elastic element 280 abuts against the housing 100, and the proximal end abuts against the clamping drive tube 241. The third elastic element 280 is configured to store energy when the clamping drive tube 241 moves distally, and release this energy upon restoring its deformation, thereby providing power for the resetting of the clamping drive tube 241. (Refer to...) Figure 5 The clip 211 also includes two clamping arms 211b, a connecting portion 211c connecting the two clamping arms 211b, a locking portion 211d, and ears 211e. The connecting portion 211c is flexible, allowing the two clamping arms 211b to rotate relative to each other. One clamping arm 211b has a protrusion 211a connected to its end away from the connecting portion 211c, and is also connected to the locking portion 211d, which is a curved C-shaped hook. The other clamping arm 211b has two spaced ears 211e connected to its end away from the connecting portion 211c. Driven by an external force, the two clamping arms 211b move closer to each other, causing the engaging part 211d to move between the two ears 211e until the engaging part 211d clamps between the two ears 211e and hooks the end of the clamping arm 211b connected to the ear 211e. At this time, the blood vessels or tissues between the two clamping arms 211b are clamped, achieving hemostasis of the blood vessels or tissues.

[0100] In summary, the clamping clamp provided in this embodiment of the present disclosure is provided with a shielding structure 214, referring to... Figure 12 The shielding structure 214 can limit the range of deformation of the limiting barb 213, so as to ensure that when the limiting barb 213 is deformed to the maximum extent, the far inner wall of the process groove 212a will not be exposed on the movement path of the protrusion 211a of the clamp 211, thereby avoiding the protrusion 211a from abutting the far inner wall of the process groove 212a, so as to avoid the clamping mechanism 220 from getting stuck and reduce the failure rate of the clamping clamp.

[0101] 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.

[0102] 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 and clamp body assembly; The clamp body assembly is connected to the housing, and the clamp body assembly includes a clamping chamber and a clamping mechanism, the clamping mechanism being movably connected to the housing; The clamping chamber includes a clamp, a bottom, limiting barbs, and a shielding structure; The clip includes a protrusion; The bottom is disposed opposite to the clamping mechanism, and a storage space for accommodating the clamp is formed between the bottom and the clamping mechanism. The bottom has a process groove. The proximal end of the limiting barb is connected to the proximal side of the process groove. The limiting barb has a limiting position and a first clearance position after deformation from the limiting position toward the direction away from the clamping mechanism. Along the direction from near to far, the limiting barb located at the limiting position extends obliquely toward the direction closer to the clamping mechanism. The limiting barb located at the limiting position is configured to abut against the protrusion to prevent the clamp from moving to the proximal side. The limiting barb located at the first clearance position is configured to allow the clamp to move to the distal side. The shielding structure is connected to the bottom and is configured to abut against the limiting barb located at the first clearance position so that the surface of the limiting barb facing the storage space at the first clearance position is flush with the surface of the bottom facing the storage space, or to make the surface of the limiting barb facing the storage space at the first clearance position closer to the clamping mechanism than the surface of the bottom facing the storage space.

2. The clamping pliers according to claim 1, characterized in that, The thickness of the bottom is the same as the thickness of the limiting barb.

3. The clamping pliers according to claim 2, characterized in that, The surface of the shielding structure near the clamping mechanism is flush with the bottom surface away from the clamping mechanism. The shielding structure is configured to abut against the limiting barb located in the first clearance position so that the surface of the limiting barb in the first clearance position facing the storage space is flush with the bottom surface facing the storage space.

4. The clamping pliers according to claim 1, characterized in that, The shielding structure includes a mounting part and a shielding part connected to the mounting part, wherein the mounting part is connected to the bottom. The blocking portion is fixed relative to the bottom. In response to the limiting barb deforming to the first avoidance position, the limiting barb abuts against the blocking portion; or, the blocking portion is movably connected to the mounting portion. In response to the limiting barb deforming from the limiting position towards the first avoidance position, the limiting barb abuts against the blocking portion, causing the blocking portion to move; in response to the blocking portion moving to the stop position, the limiting barb reaches the first avoidance position.

5. The clamping pliers according to claim 4, characterized in that, The shielding portion is located at the far end of the process groove, and the shielding portion is configured to abut against the far end of the limiting barb located at the first avoidance position.

6. The clamping pliers according to claim 1, characterized in that, The storage space includes at least two workstations arranged sequentially along the axial direction of the clamp body assembly, each workstation being configured to store one clamp; the bottom has at least two process grooves arranged sequentially along the axial direction of the clamp body assembly, each workstation corresponding to one process groove, and a limiting barb corresponding to the proximal side of each process groove; the clamping clamp also includes a jaw assembly connected to the distal end of the clamp body assembly; In response to the clamping mechanism moving distally relative to the clamping chamber, the clamp in the furthest station is driven to move toward the jaw assembly, and the clamps in the remaining stations are pushed by the clamping mechanism to move toward their adjacent stations distally. The limiting barbs of the adjacent stations distally are abutted by the protrusions of the clamps and deform from the limiting position to the first clearance position. In response to the clamping mechanism continuing to move distally relative to the clamping chamber, the clamp in the farthest station is driven into the jaw assembly, and the clamps in the remaining stations are pushed by the clamping mechanism into their distal adjacent stations. The protrusion of the clamp disengages from the limiting barb of the distal adjacent station and reaches its distal side, thereby restoring the limiting barb from the first avoidance position to the limiting position.

7. The clamping pliers according to claim 6, characterized in that, The clamping mechanism includes a main body and at least two pushing parts. Each pushing part is connected to the main body at its proximal end and has a pushing position. Along the direction from proximal to distal, the pushing part located at the pushing position extends obliquely towards the bottom. Each clamp in the clamping chamber corresponds to one pushing part. In response to the clamping mechanism moving distally relative to the clamping chamber, the pushing part abuts against the protrusion of the clamp to move the clamp toward the distally adjacent workstation and enter the distally adjacent workstation.

8. The clamping pliers according to claim 7, characterized in that, The pushing part also has a second avoidance position after deforming from the pushing position in a direction away from the bottom; In response to the clamping mechanism moving proximally relative to the clamping chamber, the pushing part is abutted by the protrusion of the clamp and deforms from the pushing position to the second abutment position; In response to the clamping mechanism continuing to move proximally relative to the clamping chamber, the pushing part disengages from the protrusion of the clamp and reaches its proximal side, thereby restoring the pushing part from the second avoidance position to the pushing position.

9. The clamping forceps according to claim 6 or 7, characterized in that, The clamping mechanism includes a main body and an ejection part, wherein the ejection part is connected to the distal end of the main body; In response to the clamping mechanism moving distally relative to the clamping chamber, the clamp located at the furthest workstation is pushed towards the jaw assembly by the push-out portion; In response to the clamping mechanism continuing to move distally relative to the clamping chamber, the clamp located at the furthest workstation is pushed into the jaw assembly by the push-out portion.

10. The clamping pliers according to claim 1, characterized in that, The clamping pliers also include a power source, which is mounted on the housing and is drivably connected to the clamping mechanism.

11. The clamping pliers according to claim 10, characterized in that, The clamp body assembly further includes a push rod, a clamping mechanism, and a first elastic element. The power source is drivably connected to the push rod, and the clamping mechanism is movably connected to the push rod. One end of the first elastic element is connected to the push rod, and the other end is connected to the clamping mechanism. The clamping mechanism is sleeved on the clamping chamber and the clamping mechanism, and the clamping mechanism is movably connected to the housing. The clamping pliers also include a jaw assembly, which is connected to the distal end of the clamp body assembly. In response to the power source driving the push rod to move distally, the push rod pushes the clamping mechanism distally through the first elastic element until the clamping mechanism is limited, so that the clamp enters the jaw assembly from the clamping chamber; In response to the power source driving the push rod to continue moving distally, the first elastic element stores energy, and the push rod pushes against the clamping mechanism to move the clamping mechanism distally, thereby closing the jaw assembly.

12. The clamping pliers according to claim 11, characterized in that, The clamp body assembly further includes a first limiting member, and the clamping mechanism has a first limiting groove extending along the axial direction of the clamp body assembly. The first limiting member is connected to the housing and passes through the first limiting groove. In response to the power source driving the push rod to move distally, the push rod pushes the clamping mechanism distally through the first elastic member, thereby causing the first limiting groove to move distally relative to the first limiting member until the proximal inner wall of the first limiting groove abuts against the first limiting member to limit the clamping mechanism.

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