clip applier

Abstract

This invention discloses a clamping pliers, including a jaw assembly, a clamp box, a clamp feeding assembly, and a clamp pushing assembly. The clamp box contains N clamps. The clamp feeding assembly is used to push the foremost first clamp into the jaw assembly. The clamp pushing assembly is used to push the other clamps, excluding the first clamp, forward one position. When the clamps are in the open state, the two clamping arms form a clamping surface. The clamp feeding assembly is located on the first side of the clamping surface, and the clamp pushing assembly is located on the second side of the clamping surface. The first side is different from the second side. The clamp feeding assembly and the clamp pushing assembly of this invention are independent components, so the forward movement length of the clamp feeding assembly and the forward movement length of the clamp pushing assembly do not need to be equal. The size design of the jaw assembly and the size design of the clamp box can be independent of each other, resulting in a simpler and more compact structure.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a clamping forceps. Background Technology

[0002] In surgical procedures, it is common to temporarily or permanently ligate blood vessels or other tissues to reduce bleeding. There are two methods for ligating blood vessels: the first is to suture the vessel with a needle and surgical sutures, and the second is to clamp the vessel with clips to close it. The first method requires complex suturing operations by the surgeon, is time-consuming, and is difficult to perform in endoscopic surgery where space is limited and visibility is low. In contrast, clamping the vessel to close it is simple and can be performed quickly. Therefore, the use of clips in endoscopic surgery has increased dramatically.

[0003] Typically, these clips are applied to blood vessels or other tissues using a specialized instrument, usually called a clip applicator. Traditional clip applicators are single-use; after a clip is installed externally, the jaws of the clip applicator are inserted into the body to apply the clip, and this process of repeatedly installing a single clip is inconvenient. In recent years, continuous clip applicators capable of applying multiple clips simultaneously have become a trend.

[0004] A known continuous clamping clamp includes a jaw assembly, a clamp box, a handle, and a pushing mechanism. The clamp box is a long box that contains a first clamp located at the farthest end and other clamps arranged one after another behind the first clamp. In use, clamping is required to feed, push, and apply clamps. Feeding clamps means pushing the first clamp into the jaw position. Pushing clamps means pushing the other clamps in the clamp box to move one position forward so that a new first clamp is added to the front end. Applying clamps means closing the jaws so that the clamps located in the jaw assembly are closed. The handle provides power to drive the feeding, pushing, and applying of clamps. The pushing mechanism is a one-piece molded thin metal strip—the pushing plate—installed on the side of the clamp box. The front end of the pushing plate is provided with a feeding clamp, and the middle end is provided with multiple pushing clamps corresponding to the spacing of the other clamps. The feeding clamp and the pushing clamp are elastically inclined to the main body of the pushing plate. The rear end of the pushing plate is connected to the handle, so that the movement of the handle drives the pushing plate to move forward or backward. When the pushing plate moves forward, the feeding clamp tilts and abuts against the first clamp from the side, and the multiple pushing clamps tilt and abut against the other clamps, and all clamps move forward at the same time. This type of integrated pusher requires both the feeding and pushing clips to be sheet-like; otherwise, they will collide and interfere with the clamps during retraction. However, sheet-like structures lack rigidity and are prone to bending, leading to instability in both feeding and pushing. Furthermore, the integrated molding process places high demands on manufacturing. The jaw assembly's dimensions must accommodate the feeding clip's forward length, and the distance between two adjacent clamps in the clamp box must equal the pushing clip's forward length. This type of pusher, where feeding and pushing clips are executed synchronously, requires the feeding clip's forward length and the pushing clip's forward length to be equal. This necessitates that the jaw assembly's dimensions and the clamp box's dimensions be matched. The clamping force is not compact and the design is complex. For example, the distance between adjacent clamps in the clamp box cannot be too small; otherwise, the jaw assembly's dimensions will be too small to stably hold the first clamp. Conversely, the jaw assembly's dimensions cannot be too large; otherwise, the large distance between adjacent clamps in the clamp box will result in a long clamp box and a large overall clamping force. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention aims to provide a clamping pliers: comprising a jaw assembly, an operating assembly, and a shaft assembly extending from the operating assembly; the shaft assembly includes a clamp box, a clamp delivery assembly, and a clamp pusher assembly; the clamp box includes a first end connected to the jaw assembly and a second end opposite to the first end; the clamp box contains N clamps, where N is greater than or equal to 2, and the N clamps include a first clamp, a second clamp, and so on, arranged sequentially from the first end to the second end up to the Nth clamp; the clamp delivery assembly is used to abut against and push the first clamp forward into the jaw assembly; the clamp pusher assembly is used to abut against... The clamps, including a first clamping arm, a second clamping arm, and a connecting portion located between the first clamping arm and the second clamping arm, are pushed forward. When the clamps are in the open state, the first clamping arm and the second clamping arm form a clamping surface, and the clamping surfaces of the plurality of clamps are located on the same plane. The operating component drives the clamping feeding component and the clamping pushing component to move forward, and drives the jaw assembly to perform a jaw closing action. The clamping feeding component is located on the first side of the clamping surface of the clamps. The clamping pushing component is located on the second side of the clamping surface of the clamps, and the first side is different from the second side.

[0006] Preferably, the N clamping surfaces of the N clamps are located on the same plane.

[0007] Preferably, the clamping box includes a bottom wall, a first side wall and a second side wall disposed opposite to each other, and the clamping box body of the clamp housed in the clamping box is parallel to the bottom wall; the push clamping assembly is located inside the bottom wall of the clamping box.

[0008] Preferably, the bottom wall of the clamp box includes an opening, through which the clamping assembly enters the clamp box and is located between the first clamp and the second clamp.

[0009] Preferably, the clamping assembly includes an elastic push rod and a clamping block disposed at one end of the elastic push rod; the rod body assembly further includes a base, the base including a guide groove extending in the axial direction and a block groove communicating with the guide groove, the block groove including a guide ramp, the guide ramp being angled to the axial direction; the guide groove accommodates the elastic push rod and guides the elastic push rod to move in the axial direction, the block groove accommodates the clamping block, and the guide ramp guides the clamping block into the opening.

[0010] Preferably, the bottom wall includes a first bottom wall located in front of the opening and a second bottom wall located behind the opening; the base is installed to the clamping box, and the guide ramp is in contact with the first bottom wall.

[0011] Preferably, the thickness of the clamping block is greater than the thickness of the elastic push rod.

[0012] Preferably, the clamping assembly further includes a connecting rod extending in the axial direction, one end of the connecting rod being connected to the elastic push rod, and the other end of the connecting rod being connected to the operating assembly.

[0013] Preferably, the guide groove also accommodates the connecting rod and guides the connecting rod to move in the axial direction.

[0014] Preferably, the operating component further includes an actuator and a mating mechanism; the actuator provides power to the clamping assembly and the pushing assembly; the mating mechanism includes a first mating member, an intermediate member, and a second mating member, wherein the first mating member drives the second mating member through the intermediate member; the clamping assembly is linked to the first mating member; the pushing assembly is linked to the second mating member; the movement direction of the first mating member is opposite to the movement direction of the second mating member.

[0015] Compared with the prior art, the beneficial effects of the present invention are that the clamping component and the pushing component are independent parts, located on both sides of at least one clamp, and the first clamp and other clamps are pushed separately from both sides. Thus, the forward length of the clamping component and the forward length of the pushing component do not need to be equal. The size design of the jaw assembly and the size design of the clamp box can be independent of each other, providing design space for independent optimization of the jaw assembly structure and the clamp box structure, and also providing design space for optimizing the structure of the pushing component and the clamping component themselves. The clamping clamp structure is simple and the size is more compact. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the clamping forceps provided in the first embodiment of the present invention;

[0017] Figure 2 yes Figure 1 The image shown is a front view with part of the clamp housing hidden.

[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram showing part of the clamp housing being hidden;

[0019] Figure 4A yes Figure 1 A schematic diagram of the front structure of the clamp of the clamping pliers shown;

[0020] Figure 4B yes Figure 1 A schematic diagram of the side structure of the clamp of the clamping pliers shown;

[0021] Figure 5 yes Figure 1 An exploded perspective view of the jaw assembly and lever assembly of the clamping pliers shown.

[0022] Figure 6 yes Figure 1The diagram shows the structure of the jaw drive mechanism of the clamping pliers.

[0023] Figure 7 yes Figure 6 An exploded perspective view of part of the jaw drive mechanism shown;

[0024] Figure 8 yes Figure 1 The diagram shows the structure of the clamp feeding drive mechanism.

[0025] Figure 9 yes Figure 8 An exploded perspective view of the clamp feeding drive mechanism shown.

[0026] Figure 10 yes Figure 1 The front view of the push rod and mating block of the push-clamp drive mechanism of the clamping clamp shown;

[0027] Figure 11 yes Figure 10 A three-dimensional schematic diagram of the push rod of the push-clamp drive mechanism of the clamping clamp shown;

[0028] Figures 12 to 14 yes Figure 1 The diagram shows the state changes of the transmission mechanism of the clamping clamp.

[0029] Figure 15A yes Figure 1 The wrench of the clamp shown is in the open position, where the jaw assembly and the lever assembly are... Figure 15B A cross-sectional view from the MM perspective;

[0030] Figure 15B yes Figure 1 The wrench of the clamp shown is in the open position, where the jaw assembly and the lever assembly are... Figure 15A A cross-sectional view from an LL perspective;

[0031] Figure 16A yes Figure 1 When the wrench of the clamp shown is in the middle position, the jaw assembly and the lever assembly are... Figure 16B A cross-sectional view from the MM perspective;

[0032] Figure 16B yes Figure 1 When the wrench of the clamp shown is in the middle position, the jaw assembly and the lever assembly are... Figure 16A A cross-sectional view from an LL perspective;

[0033] Figure 17A yes Figure 1 When the wrench of the clamp shown is in the closed position, the jaw assembly and the lever assembly are... Figure 17B A cross-sectional view from the MM perspective;

[0034] Figure 17B yes Figure 1 When the wrench of the clamp shown is in the closed position, the jaw assembly and the lever assembly are... Figure 17A A cross-sectional view from an LL perspective;

[0035] Figure 18 yes Figure 1 An exploded perspective view of the switching mechanism of the clamp shown;

[0036] Figure 19 yes Figure 1 An exploded perspective view of another angle of the switching mechanism of the clamp shown;

[0037] Figure 20 yes Figure 1 A schematic diagram of the transmission mechanism of the knob assembly of the clamping pliers shown;

[0038] Figure 21 yes Figure 1 A schematic diagram of the clamping mechanism shown;

[0039] Figure 22 yes Figure 1 An exploded view of the clamping block assembly of the clamping pliers with the second clamping component shown.

[0040] Figure 23A yes Figure 1 The diagram shows the movement process of the clamping block of the clamping clamp.

[0041] Figure 23B yes Figure 23A The diagram shows the motion trajectory of the clamping block of the clamping pliers;

[0042] Figure 24A yes Figure 1 The diagram shows the movement process of the pusher block of the clamping pliers.

[0043] Figure 24B yes Figure 24A The diagram shows the motion trajectory of the pusher block of the clamping pliers.

[0044] Figure 25 yes Figure 2 The diagram shows the structure of the wrench of the clamping pliers;

[0045] Figure 26 yes Figure 25 An exploded view of the guide channel of the clamp wrench shown.

[0046] Figure 27 yes Figure 2 The diagram shows the structure of the guide pivot of the clamp.

[0047] Figure 28 yes Figure 2 The diagram shows the assembly of the guide pivot of the clamp and the locking spring element of the wrench.

[0048] Figure 29 yes Figure 2 The diagram shows the structure of the path switching component of the clamping clamp;

[0049] Figure 30 yes Figure 1 A schematic diagram of the internal structure of the housing of the clamping clamp shown;

[0050] Figure 31A yes Figure 2 The diagram shows the state of the wrench locking mechanism when the wrench of the clamp is in the open position.

[0051] Figure 31B yes Figure 2 The diagram shows the state of the wrench locking mechanism when the wrench of the clamp is moved forward to the middle position;

[0052] Figure 31C yes Figure 2 The diagram shows the state of the wrench locking mechanism when the wrench of the clamp is in the closed position.

[0053] Figure 31D yes Figure 2 The diagram shows the state of the wrench locking mechanism when the wrench of the clamping pliers is in the middle position during its reset movement.

[0054] Figure 32 yes Figure 1 The shown is a cross-sectional view of the clamping device from one perspective of the path switching component;

[0055] Figure 33A yes Figure 1 The diagram shows the state of the path switching component when the wrench of the clamping pliers is in the open position;

[0056] Figure 33B yes Figure 1 The diagram shows the state of the path switching component when the wrench of the clamping pliers moves forward to the first adjacent position;

[0057] Figure 33C yes Figure 1 The diagram shows the state of the path switching component when the wrench of the clamping pliers is in the closed position.

[0058] Figure 33D yes Figure 1 The diagram shows the state of the path switching component when the wrench of the clamping pliers moves to the second adjacent position during its reset motion.

[0059] Figure 34 yes Figure 1 A schematic diagram of the jaw assembly of the clamping pliers shown;

[0060] Figure 35 yes Figure 34 A schematic diagram of the structure of the first or second clamping arm of the jaw assembly shown;

[0061] Figure 36 yes Figure 34 A cross-sectional view of the jaw assembly shown from one perspective;

[0062] Figure 37 yes Figure 34 A schematic diagram of the structure of the stop and clamp of the jaw assembly shown;

[0063] Figure 38 yes Figure 34 A schematic diagram of the stop component of the jaw assembly shown;

[0064] Figure 39 yes Figure 34 A cross-sectional view of the jaw assembly shown from another perspective;

[0065] Figure 40 yes Figure 34 The cross-sectional view of the jaw assembly assembly box shown;

[0066] Figure 41 yes Figure 34 The diagram shows the jaw assembly in the closed state;

[0067] Figure 42 yes Figure 34 The diagram shows the jaw assembly in the open state;

[0068] Figures 43 to 45 This is a schematic diagram showing the state changes of a portion of the transmission mechanism of the clamping pliers provided in the second embodiment of the present invention;

[0069] Figure 46 This is an exploded perspective view of a portion of the switching mechanism of the clamping forceps provided in the third embodiment of the present invention;

[0070] Figures 47 to 50 This is a schematic diagram showing the state changes of a portion of the transmission mechanism of a surgical instrument provided in the third embodiment of the present invention;

[0071] Figure 51 This is an exploded perspective view of the switching mechanism of the clamping forceps provided in the fourth embodiment of the present invention;

[0072] Figure 52 to Figure 54 This is a schematic diagram showing the state changes of a portion of the transmission mechanism of the clamp provided in the fourth embodiment of the present invention. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0074] Surgical instruments are used by clinicians who manipulate them during surgery. The terms "proximal," "posterior," "distal," and "anterior" as used in this article are relative to the clinician manipulating the instruments. "Proximal" and "posterior" refer to the parts relatively close to the clinician, while "distal" and "anterior" refer to the parts relatively far from the clinician. "Left" and "right" are used in conjunction with these terms. Figure 1 The positions of the surgical instruments shown are for reference only; for example, the jaw assembly is "left" and the cannula 210 is "right". The terms "upper" and "lower" are used with reference to the relative positions of the upper and lower jaws of the jaw assembly; specifically, the upper jaw is "upper" and the lower jaw is "lower". It should be understood that the orientations such as "proximal", "posterior", "far", "anterior", "left", "right", "upper", and "lower" are defined for ease of description; however, surgical instruments can be used in many directions and positions, therefore these terms expressing relative positional relationships are not limited or absolute.

[0075] In this invention, unless otherwise explicitly 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. Those skilled in the art can understand the specific meaning of the above terms in this invention 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 excluded cases, but not other possible cases. For example, "detachably connected" refers to a detachable connection, excluding fixed connections and integral parts, but not excluding movable connections, direct connections, or indirect connections through an intermediate medium.

[0076] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention. The terms "axial" or "longitudinal" as used herein refer to the length direction of the sleeve 210.

[0077] Figures 1 to 42A surgical instrument according to a first embodiment of the present invention is shown, specifically a continuous clamping clamp for applying clamps to the human body, such as blood vessels or other tissues. In general, the clamp includes an operating component 300, a shaft assembly 200 extending from the operating component 300, and a jaw assembly disposed at one end of the shaft assembly 200. To continuously apply multiple clamps, the clamp must perform three actions: clamp delivery, jaw closure (clamping action), and clamp pushing, with the clamp delivery action necessarily followed by the jaw closure action. Each use of the clamp requires completing these three actions. The number of times the clamp is used depends on the number of clamps it contains.

[0078] The operating assembly 300 includes a main body 320 and a wrench (actuator 330) movably mounted on the main body 320. The main body 320 includes a housing 321, to which the wrench is movably connected. The housing 321 is divided, according to its positional relationship, into a generally spindle-shaped cylindrical head housing 321 and a handle housing 321 extending from the lower side of the head housing 321. The handle housing 321 and the wrench form a handle assembly. The user can hold the handle housing 321 with one hand and pull the wrench with their fingers, causing the wrench to move relative to the main body 320. The clamp also includes a transmission mechanism, part of which is housed within the housing 321 of the operating assembly 300, and part of which is located in the lever assembly 200.

[0079] To realize the clamping action, jaw closing action (clamping action), and clamp pushing action, the transmission mechanism includes a clamping drive mechanism, a jaw drive mechanism, and a clamp pushing drive mechanism. The wrench drives the transmission mechanism to move, thereby driving the clamping drive mechanism, jaw drive mechanism, and clamp pushing drive mechanism to move. The clamping drive mechanism performs the clamping action, the jaw drive mechanism performs the jaw closing action (clamping action), and the clamp pushing drive mechanism performs the clamp pushing action. Specific details will be described in detail below.

[0080] like Figures 4A-4BAs shown, the clamp 10 of the clamping forceps includes a first clamping arm 31, a second clamping arm 32, and a connecting portion 33. The connecting portion 33 is located between the first clamping arm 31 and the second clamping arm 32, and the two clamping arms can pivot relative to each other around the connecting portion 33. The first clamping arm 31 includes two first protrusions 41, and the second clamping arm 32 includes two second protrusions 42. The first clamping arm 31 also includes a first engaging portion 35, and the second clamping arm 32 also includes a second engaging portion 36. Driven by an external force, the first clamping arm 31 and the second clamping arm 32 of the clamp 10 approach each other, eventually engaging the first engaging portion 35 with the second engaging portion 36 of the second clamping arm, thereby fixing the first clamping arm 31 and the second clamping arm 32 together and achieving clamping of the tissue located between the first clamping arm 31 and the second clamping arm 32. At this time, the first clamping arm 31 and the second clamping arm 32 are engaged. When the first clamping arm 31 and the second clamping arm 32 of the clip 10 are engaged, the clip is in a closed / locked state; when the first clamping arm 31 and the second clamping arm 32 are disengaged, the clip is in an open state. The first engaging portion 35 is the tip portion located at the distal end of the first clamping arm 31, and the second engaging portion 36 is a curved C-shaped hook portion located at the distal end of the second clamping arm 32.

[0081] The jaw assembly includes a first jaw arm and a second jaw arm pivotally connected to the lever assembly 200. A clamp 10 can be supported between the first and second jaw arms. The jaw assembly switches between an open state and a closed state. In the open state, the jaw assembly clamps an open clamp. Due to structural limitations, the jaw assembly cannot open indefinitely. The open state of the jaw assembly includes a fully open state, where the vertical distance between the distal ends of the first and second jaw arms is the greatest. In the closed state, the vertical distance between the distal ends of the first and second jaw arms is the smallest. Closing the jaw assembly causes the clamp 10 to change from an open state to a closed state. The proximal jaw drive drives the sleeve 210 (the distal jaw drive) to move forward and backward, as described later in the movement mode of the jaw drive mechanism. The forward movement of the sleeve 210 causes the jaw assembly to close, compressing the clamp located between the first and second jaw arms. The backward movement of the sleeve 210 causes the jaw assembly to open.

[0082] The pole assembly 200 includes a clamp box 220, a base 240, a clamp feeding assembly, a clamp pushing assembly, and a sleeve 210 fitted onto the clamp box 220, the clamp feeding assembly, and the clamp pushing assembly. The clamp feeding assembly is a clamp feeding drive mechanism, the clamp pushing assembly is a clamp pushing drive mechanism, and the sleeve 210 is a jaw drive mechanism.

[0083] The first end (far end) of the clamp box 220 is connected to the jaw assembly, and the second end (proximal end) opposite the first end is fixedly connected to the main body 320. The clamp box 220 can hold up to M clamps, where M is greater than or equal to 2, which is related to the size of the clamp box 220. After each use of the clamping clamp, one clamp in the clamp box 220 is removed. When the clamp box 220 holds N clamps, where N is less than or equal to M, the N clamps are arranged sequentially from the first end to the second end, namely the first clamp, the second clamp, and so on up to the Nth clamp. The first clamp is closest to the first end and is fed into the jaw assembly first. The clamps other than the first clamp in the clamp box 220 are defined as other clamps. The clamp box 220 includes M workstations, arranged from the far end to the proximal end, namely the first workstation, the second workstation, ... the Mth workstation. The first clamp is located at the foremost first workstation, and the second clamp to the Nth clamp are arranged sequentially at the second to the Nth workstations.

[0084] The clamp 220 has a bottom wall 221, along which a plurality of transverse barbs 225 are formed, facing the distal end of the clamp 220 and inclined inward. The transverse barbs 225 are evenly spaced, and the distal ends of the transverse barbs 225 are inclined. When the clamp moves forward axially, the clamp slides into the transverse barbs 225 in front, causing it to bend towards the bottom wall 221 to pass smoothly through the transverse barbs 225, thereby allowing the clamp to move from the current station to the adjacent front station. The inclined ends of the transverse barbs 225 abut against the rear side of the clamp to prevent the clamp from moving backward, thereby preventing the clamp from moving from the current station to the adjacent rear station. Thus, the transverse barbs 225 have a one-way locking function, preventing the clamp from moving backward between adjacent stations.

[0085] In this embodiment, a first transverse barb 225 and a second transverse barb 225 are arranged between two adjacent workstations. When the first transverse barb 225 engages a first protrusion 41 behind the clamp, the second transverse barb 225 engages a second protrusion 42 on the same side of the same clamp behind the clamp, thereby preventing the clamp from moving from the current workstation to the adjacent rear workstation in the clamp box 220. In this embodiment, there are multiple first transverse barbs 225 and multiple second transverse barbs 225, arranged in two rows on both sides of the width of the bottom wall 221, with adjacent transverse barbs 225 in each row being axially equidistant.

[0086] In this embodiment, the clamp box 220, the clamp delivery assembly, and the clamp pusher assembly at the shaft assembly 200 form a special three-layer design, the specific details of which are as follows.

[0087] When the clamp is in the open state, a clamping surface is formed between the first clamping arm and the second clamping arm. The clamping feed assembly is used to abut and push the first clamp forward to enter the jaw assembly; the clamp pushing assembly is used to abut and push the second clamp to the Nth clamp forward; the jaw assembly is used to receive a clamp (the first clamp) from the clamp box 220 and perform a closing action to compress the clamp to the closed state. The clamping feed assembly is located on the first side of the clamping surface of the clamp, and the clamp pushing assembly is located on the second side of the clamping surface of the clamp, the first side being different from the second side. The clamping feed assembly and the clamp pushing assembly are independent components, located on both sides of at least one clamp, and independently push the first clamp or other clamps from both sides. Therefore, the forward length of the clamping feed assembly and the forward length of the clamp pushing assembly do not need to be equal. The size design of the jaw assembly and the size design of the clamp box 220 can be independent of each other, providing design space for independent optimization of the jaw assembly structure and the clamp box 220 structure, and also providing design space for optimizing the structure of the clamp pushing assembly and the clamping feed assembly themselves. The clamping clamp structure is simple and the size is more compact.

[0088] In existing technologies, an integrated push plate is used. The feeding and pushing plates must be sheet-like; otherwise, they will collide and interfere with the clamps when retracting. However, sheet-like structures lack rigidity and are prone to bending, resulting in instability in both feeding and pushing. Furthermore, the integrated molding process places high demands on manufacturing. The size design of the jaw assembly must meet the forward length of the feeding clamp. The distance between two adjacent clamps in the clamp box 220 is equal to the forward length of the pushing clamp. In this type of push plate where the pushing and feeding clamps are executed synchronously, the forward lengths of the feeding clamp and the pushing clamp are equal. This means that the size design of the jaw assembly and the size design of the clamp box 220 must be matched. The clamp size is not compact, and the design is complex. For example, the distance between adjacent clamps in the clamp box 220 cannot be too small; otherwise, the size of the jaw assembly will be too small to stably hold the first clamp. The size of the jaw assembly cannot be too large either; otherwise, the distance between adjacent clamps in the clamp box 220 will be too large, resulting in a long clamp box 220 and a large overall size of the clamp. In this embodiment, with the clamping and pushing components separated, the distance between the clamps in the clamp box 220 can be designed to be small enough that the forward length of the pushing component does not need to be considered. The moving channel of the clamp in the jaw assembly can be designed to be long enough to meet the requirements of stable guidance, clamping and compression of the clamps, without being limited by the distance between the clamps. In addition, the clamping and pushing components can be designed to be rigid enough to solve the problem of unstable clamp pushing in the prior art.

[0089] The first and second clamping arms each have a centerline. The clamp includes a parallel first side surface and a second side surface. Since the clamp is approximately C-shaped in the open state, both the first and second side surfaces are C-shaped. In one embodiment, the clamping surface is a surface formed by the two centerlines of the first and second clamping arms, and the two sides of this surface are the first and second sides of the clamping surface where the feeding and pushing components are respectively arranged. In another embodiment, the first clamping surface is formed on the C-shaped first side surface, and the second clamping surface is formed on the second side surface. The area between the first and second clamping surfaces is the inner side, and the two outer sides of the first and second clamping surfaces are the first and second sides of the clamping surface where the feeding and pushing components are respectively arranged.

[0090] In this embodiment, when the clamps are installed in the clamp box 220, the two clamping arms of the clamps are compressed by the first side wall 222 and the second side wall 223 respectively, but are not compressed into a closed state. The clamping plane is parallel to the bottom wall 221, and the multiple clamping surfaces of the multiple clamps are on the same plane. In other embodiments, the multiple clamps can be arranged at an angle in the clamp box 220, and the clamping surfaces of the multiple clamps are not on the same plane, but the clamping surfaces of the multiple clamps are parallel to each other. The clamping feeding assembly and the clamping pushing assembly are still arranged relative to each clamping surface on the first and second sides of the clamping surface.

[0091] The clamp box 220 includes a bottom wall 221 extending in the longitudinal direction and opposing first side walls 222 and second side walls 223, forming a generally C-shaped structure. When the clamp box 220 accommodates clamps, the clamping surfaces of the clamps are parallel to the bottom wall 221. The clamping delivery assembly is located on the outer side of the bottom wall 221 of the clamp box 220, and the clamping push assembly is located on the inner side of the bottom wall 221 of the clamp box 220. In this way, the clamping delivery assembly and the clamping push assembly push the first clamp and other clamps separately from both sides of the clamp box 220, making full use of the space inside the sleeve 210 and on both sides of the clamp box 220, increasing the design freedom of the clamping push assembly and the clamping delivery assembly, and making the clamping clamp structure more stable and compact. The inner and outer sides of the bottom wall 221 refer to the two sides of the plane in which the bottom wall 221 is located, and the clamps, the first side walls 222 and the second side walls 223 are located on the inner side of the bottom wall 221.

[0092] An opening is formed in the bottom wall 221 of the clamping box 220, located near the distal end of the bottom wall 221. The clamping assembly enters the clamping box 220 through the opening and is positioned between the first clamp and the second clamp. The opening ensures that the clamping assembly can smoothly enter and exit the clamping box 220 and enter between the first clamp and the second clamp, thereby abutting against the rear end of the first clamp to push it forward. Preferably, a portion of the opening is located at the first station and another portion is located at the second station.

[0093] The clamping assembly includes an elastic push rod 232 and a clamping block 231 connected to one end of the elastic push rod 232. The clamping block 231 is used to abut and push the first clamp. The base 240 is provided with a channel for receiving the clamping assembly and allowing its axial movement. The channel includes an axially extending guide groove 241 and a block groove 242 communicating with the guide groove 241. The block groove 242 includes a guide ramp 243, which is angled to the axial direction. Specifically, when the base 240 and the clamping box 220 are installed together, the guide ramp 243 faces the distal end and is inclined towards the clamping box 220. The elastic push rod 232 is composed of multiple stacked metal sheets, is elastic, and can be bent. Initially, the clamping block 231 and the elastic push rod 232 are parallel to each other along the axial direction. The guide groove 241 accommodates the elastic push rod 232, and the block groove 242 accommodates the clamping block 231. The guide groove 241 guides the elastic push rod 232 to move along the axial direction, and the guide ramp 243 guides the clamping block 231 into the opening. Specifically, when the elastic push rod 232 moves forward along the axial direction of the guide groove 241, the clamping block 231 at the front end abuts against the guide ramp 243, causing the elastic push rod 232 to bend. The clamping block 231 then enters the opening of the clamping box 220 at an angle along the guide ramp 243, thereby abutting against the rear end of the first clamp to push it forward. Then, the elastic push rod 232 moves backward along the axial direction of the guide groove 241, causing the clamping block 231 to retract from the opening into the block groove 242 along the guide ramp 243. The base 240 has strong rigidity, and its channel accommodates the clamping assembly, ensuring that the clamping assembly is stably and reliably arranged within the clamping clamp at the initial moment. Simultaneously, the guide groove 241 provides a fixed channel for the elastic push rod 232, restricting its movement space and preventing excessive bending or even breakage of the elastic push rod 232 during movement, which could block it within the sleeve 210 and affect the clamping function. Compared to the inclined clamping plates in the prior art, the rigid guide ramp 243 ensures the stability of the clamping block 231's movement. The bottom wall 221 of the clamping box 220 also includes a first bottom wall 221a located at the front end of the opening and a second bottom wall 221b located at the rear end of the opening; when the base 240 is installed into the clamping box 220, the guide ramp 498 connects with the first bottom wall 221a. The connection between the guide ramp 498 and the first bottom wall 221a means a direct connection with virtually no gaps, ensuring that the clamping block 231 can smoothly enter the opening without obstruction and will not be accidentally jammed. The thickness of the clamping block 231 is greater than the thickness of the elastic push rod 232. The elastic push rod 232 has a thin and flexible structure, ensuring that it can bend along the guide slope 243, allowing the clamping block 231 to move along the guide slope 243. The greater thickness of the clamping block 231 results in greater strength and less deformation. Furthermore, due to its greater thickness, the clamping block 231 forms a first contact surface 486 at its distal end, which has a large area and can stably push the first clamp. Preferably, the clamping block 231 and the elastic push rod 232 are independent parts and can be optionally welded together.

[0094] The clamping assembly also includes an axially extending clamping rod 233. One end of the clamping rod 233 is connected to an elastic push rod 232, and the other end is connected to an operating component 300. A guide groove 241 accommodates the clamping rod 233. The operating component 300 drives the clamping rod 233 to move axially, thereby causing the clamping rod 233 to move together with the elastic push rod 232 and the clamping block 231. The clamping rod 233 is a cylindrical rod or a square rod or similar structure. Unlike the elastic push rod 232, the clamping rod 233 has high rigidity and is not easily deformed. This avoids the elastic push rod 232 from easily bending in the guide groove 241 during axial movement, which could cause the clamping assembly to be blocked, thus improving the stability of the clamping assembly's movement.

[0095] The guide groove 241 of the base 240 also accommodates the clamping rod 233 and guides the clamping rod 233 to move axially. The clamping rod 233 moves axially along the path planned by the guide groove 241 of the base 240, which enhances the stability of the axial movement of the clamping rod 233. The push clamp assembly is a push clamp seat 250, which includes a push clamp block 253, an elastic element 254, and a push clamp rod 251. The push clamp rod 251 is provided with a side cavity 252, and the side cavity 252 or the push clamp block 253 is provided with a rotating shaft. The push clamp block 253 is rotatably mounted into the side cavity 252 via the rotating shaft. The push clamp block 253 includes an abutting end that abuts against and pushes the clamp forward. The abutting end is located at the far end of the push clamp block 253. One end of the elastic member 254 is connected to the push clamp block 253, and the other end is connected to the push clamp rod 251. The elastic member 254 provides the push clamp block 253 with a force that rotates towards the outside of the side cavity 252, specifically causing the abutting end of the push clamp block 253 to tilt towards the clamp. In this embodiment, corresponding to the above-mentioned multiple workstations, the push clamp rod 251 is provided with multiple side cavities 252 at intervals. Each side cavity 252 is provided with an elastic member 254 and a push clamp block 253. When the push clamp assembly moves forward axially, the abutting ends of the multiple push clamp blocks 253 abut against and push a clamp forward respectively. When the push clamp assembly moves backward axially, the push clamp block 253 is squeezed by the clamp and rotates into the side cavity 252, avoiding the clamp, thereby preventing the push clamp block 253 from moving backward with the clamp. The push-clamp block 253 has a certain thickness, so that the abutting end of the push-clamp block 253 is a second abutting surface 486 with a certain area, ensuring the stability of the abutment with the clamp. The abutting end can also be set as a recess, and the clamp arm of the clamp can be inserted into the recess, further enhancing the stability of the abutment. The push-clamp assembly is the push-clamp remote driving component in this invention.

[0096] The first sidewall 222 and the second sidewall 223 of the clamping box 220 are respectively provided with a protruding first locking strip and a second locking strip. The upper and lower surfaces of the push clamping rod 251 of the push clamping seat 250 are respectively provided with a first locking groove and a second locking groove that cooperate with the first locking strip and the second locking strip, so that the push clamping seat 250 is slidably installed into the clamping box 220.

[0097] Furthermore, the operating component 300 also includes a mating mechanism. The actuator 330 provides power to the feeding assembly and the pushing assembly. The mating mechanism includes a first mating member, an intermediate member, and a second mating member. The first mating member drives the second mating member through the intermediate member. The feeding assembly is linked to the first mating member, and the pushing assembly is linked to the second mating member. The movement direction of the first mating member is opposite to that of the second mating member. The specific structure, movement process, and linkage between the mating mechanism and the feeding and pushing assemblies are described in detail below, and their benefits are the same as those shown below, so they will not be repeated here.

[0098] In this embodiment, the transmission mechanism includes a clamp delivery drive mechanism and a jaw drive mechanism. The clamp delivery drive mechanism drives the clamp to enter the jaw assembly, and the jaw drive mechanism drives the jaw assembly to move. The transmission mechanism also includes a switching mechanism for selectively driving either the clamp delivery drive mechanism or the jaw drive mechanism. The transmission mechanism includes a first state and a second state. In the first state, the switching mechanism is separated from the jaw drive mechanism and engaged with the clamp delivery drive mechanism to drive its movement. In the second state, the switching mechanism is separated from the clamp delivery drive mechanism and engaged with the jaw drive mechanism to drive its movement. In this embodiment, when the switching mechanism drives the clamp delivery drive mechanism, the jaw drive mechanism is not driven and remains stationary. When the switching mechanism is separated from the clamp delivery drive mechanism, the clamp delivery drive mechanism stops moving forward, and the switching mechanism engages with the jaw drive mechanism to drive its movement. During this process, energy is selectively transferred to either the clamp delivery drive mechanism or the jaw drive mechanism, resulting in low energy consumption. The force required for the doctor to operate the actuator 330 is also reduced accordingly, making operation more comfortable and improving the user experience of the clamp application. In addition, the movements of the feeding drive mechanism and the jaw drive mechanism are independent and carried out in a time-sharing manner, which can also prevent other problems caused by their linkage, such as complex structure and complex motion relationship.

[0099] The switching mechanism includes a first clutch mechanism and a second clutch mechanism. The first clutch mechanism is connected to the second clutch mechanism. When the switching mechanism moves under the action of the actuator 330, the first clutch mechanism and the second clutch mechanism move together. In the first state, the first clutch mechanism engages with the clamping drive mechanism to drive the clamping drive mechanism to move, and the second clutch mechanism disengages from the jaw drive mechanism. In the second state, the first clutch mechanism disengages from the clamping drive mechanism, and the second clutch mechanism engages with the jaw drive mechanism to drive the jaw drive mechanism to move. Specifically, the first clutch mechanism includes a first clutch element and a clutch switching mechanism; the first clutch element is connected to the clutch switching mechanism; in the first state, the first clutch element is engaged with the clamping drive mechanism; in the second state, the first clutch element is disengaged from the clamping drive mechanism. The second clutch mechanism includes a second clutch element, which is connected to the first clutch mechanism. To make the structure of the switching mechanism simpler and more compact, the second clutch element is the distal end of the first clutch mechanism, specifically, the distal end of the first clutch element. In one embodiment, the distal end of the first clutch mechanism is its distal end face 508. In a first state, the distal end face 508 of the first clutch mechanism is separated from the proximal end face 502 of the jaw drive mechanism. In a second state, the distal end face 508 of the first clutch mechanism is engaged with the proximal end face 502 of the jaw drive mechanism. In another embodiment, the distal end of the first clutch mechanism is a hook protruding from its distal end. The proximal end of the jaw drive mechanism is provided with a groove 314 that matches the hook. In the first state, the hook is not inserted into the groove 314 of the jaw drive mechanism. In the second state, the hook is inserted into the groove 314 of the jaw drive mechanism to drive the jaw drive mechanism to move.

[0100] The clutch switching mechanism includes a moving component and a motion guide. The moving component is connected to the first clutch component. When the moving component is guided by the motion guide to move from the first position to the second position, the first clutch component and the clamping drive mechanism switch from an engaged state to a disengaged state. Specifically, the moving component is a guide post 490 connected to the first clutch component, and the motion guide is a guide rail disposed within the housing 321, allowing the guide post 490 to move on the guide rail. The clamping head housing 321 includes a first head housing 321 and a second head housing 321, which are axially symmetrically arranged. The guide rail is selectively disposed on the inner wall of either the first head housing 321 or the second head housing 321. To ensure smoother movement of the guide post 490 on the guide rail, the guide rail is symmetrically disposed on the inner walls of the first and second head housings 321. The guide rail includes a first guide surface 494 and a second guide surface 496 that is higher than the first guide surface 494. The guide post 490 is located on the first guide surface 494 in the first position and on the second guide surface 496 in the second position. The first guide surface 494 is smoothly connected to the second guide surface 496 through an inclined surface 498, making the movement of the moving part smoother. The guide post 490 can move on the guide rail following the movement of the first clutch. When the guide post 490 moves on the first guide surface 494, the first clutch remains engaged with the clamping drive mechanism. Since the guide rails provided in the housing 321 have different heights, when the moving part moves to the second guide surface 496 of the guide rail, it drives the first clutch to move upward until it separates from the clamping drive mechanism. When the first clutch separates from the clamping drive mechanism, the distal end of the first clutch engages with the proximal end of the jaw drive mechanism to drive the jaw drive mechanism to move. The advantages of this design are twofold: firstly, the clutch switching mechanism has a simple structure, requiring no additional devices, and makes full use of the internal space of the housing 321, resulting in a compact structure; secondly, it consumes less power and operates smoothly and effortlessly.

[0101] The switching mechanism has a main body 320. To make the overall structure of the switching mechanism more compact, fully utilize the internal space of the clamping jaws, and ensure smoother and more stable movement, a portion of the first clutch mechanism is housed within the main body 320. Specifically, the main body 320 includes a proximal surface 502, a distal surface 508, a first through hole 404510 penetrating the proximal surface 502 and the distal surface 508, and a second through hole 404512 penetrating the upper surface of the switching mechanism and the upper arc surface of the first through hole 404510. The first through hole 404510 is used for the clamping drive mechanism to pass through; the second through hole 404512 is used to accommodate the first clutch. The second clutch is the distal end of the main body 320 of the switching mechanism, which, as described above, can be the distal surface 508. In the first state, the distal end of the switching mechanism is spaced apart from the proximal end of the jaw drive mechanism; in the second state, the distal end of the switching mechanism engages with the proximal end of the jaw drive mechanism. The first clutch includes a locking block 482 housed in a second through hole 404512. The clamping drive mechanism includes a slot, and the locking block 482 engages with the slot to connect the first clutch to the clamping drive mechanism. The locking block 482 includes a first end and a second end extending from the first end in a direction perpendicular to the longitudinal direction. The first end is connected to a guide post 490, and the second end is detachably connected to the slot. The first clutch also includes an elastic element, such as a spring. In the first state, the elastic element applies a downward force to the locking block 482, causing the locking block 482 to abut against the slot, thus enabling the first clutch to engage well with the clamping drive mechanism and improving the stability of the clamping action. In this embodiment, to make the overall structure simpler and more compact, the slot is an annular groove 438 provided on the near-end outer peripheral surface of the feeding drive mechanism. The second end of the clamping block 482 includes an arc-shaped surface 484 that matches the bottom surface of the annular groove 438 and an abutment surface 486 connected to the arc-shaped surface 484. The abutment surface 486 abuts against the end face of the annular groove 438. Through the cooperation between the arc-shaped surface 484 and the bottom surface of the annular groove 438, and the cooperation between the abutment surface 486 and the end face of the annular groove 438, the clamping block 482 can better push the feeding drive mechanism. Of course, in other embodiments, the first clutch member may also include a groove 314, and the feeding drive member may include a protrusion 440 that matches it.

[0102] In this embodiment, the switching mechanism is sleeved on the clamping drive mechanism. In the first state, the switching mechanism and the jaw drive mechanism are spaced apart. Under the action of external force, the clamping drive mechanism is pushed forward, and the proximal end face 502 of the clamping drive mechanism and the proximal end face 502 of the jaw drive mechanism gradually approach each other. In the second state, the switching mechanism is separated from the clamping drive mechanism and is engaged with the jaw drive mechanism to drive the jaw drive mechanism forward. The proximal end face 502 of the jaw drive mechanism and the proximal end face 502 of the clamping drive mechanism gradually move away from each other. To make the overall layout of the transmission mechanism more reasonable and the structure more compact, and to increase the contact area between the switching mechanism and the jaw drive mechanism to make the drive more stable, the jaw drive mechanism is fitted inside the clamping drive mechanism, that is, the clamping drive mechanism is located inside the jaw drive mechanism and can pass through the jaw drive mechanism; the clamping drive mechanism and the jaw drive mechanism move in the longitudinal direction under the action of the switching mechanism, and the projection of the clamping drive mechanism on the plane perpendicular to the longitudinal direction is located inside the projection of the jaw drive mechanism on the same plane, and the projection of the jaw drive mechanism on the same plane is located inside the projection of the switching mechanism on the same plane.

[0103] The actuator 330 provides power to the transmission mechanism. Specifically, the actuator 330 abuts against the switching mechanism, thereby driving the switching mechanism to move. The switching mechanism selectively transmits this power to either the clamping drive mechanism or the jaw drive mechanism. The proximal end of the switching mechanism has a driving surface 504 and a stop portion 506. The driving surface 504 abuts against the actuator 330 to receive the power, and the stop portion 506 limits the actuator 330. The driving surface 504 is a recessed surface formed by the stop portion 506 and the surface of the switching mechanism, and the head of the actuator 330 abuts against this recessed surface. To make the force applied by the actuator 330 to the switching mechanism more uniform and to make it move smoothly, the stop portions 506 are symmetrically arranged on both sides of the proximal end of the switching mechanism in its direction of travel. Correspondingly, the actuator 330 has a gripping portion and symmetrically arranged push claws extending from the gripping portion into the housing 321. The two push claws abut against the driving surfaces 504 on both sides of the switching mechanism. The stop portion 506 protrudes from the outer surface of the switching mechanism and extends in the longitudinal direction. The inner walls of the first head housing 321 and the second head housing 321 of the clamping clamp are symmetrically provided with guide grooves that match the stop portion 506. The stop portion 506 can move in the longitudinal direction within the guide groove, and the guide groove can limit the height of the stop portion 506. This can effectively reduce the shaking of the switching mechanism during movement, making the transmission more stable and reliable.

[0104] The clamping device also includes a clamping stop mechanism, which includes a bias spring and a guide pivot 350. The guide pivot 350 is described below as including a stop end 354. The guide pivot 350 includes a pivot end 352 pivotally connected to the housing 321, a guide 351 extending outward from the pivot end 352, and a stop end 354. The guide 351 is movably connected to an actuator 330. The movement of the actuator 330 causes the guide 351 and the stop end 354 to move around the pivot end 334 under the action of the bias spring. In a first state, the stop end 354 gradually approaches the proximal end of the clamping drive mechanism. In a second state, the stop end 354 abuts against the proximal end of the clamping drive mechanism to prevent the clamping drive mechanism from retracting.

[0105] The clamping anti-reverse mechanism can move its anti-reverse end 354 to the proximal end of the clamping drive mechanism and abut against it to prevent the clamping drive mechanism from retracting at the instant the switching mechanism and clamping drive mechanism separate. However, to prevent the clamping anti-reverse mechanism from failing to abut against the clamping drive mechanism due to component size deviation, motion error, etc., and causing the clamp to retract, the clamping anti-reverse mechanism can move its anti-reverse end 354 to the proximal end of the clamping drive mechanism before the switching mechanism and clamping drive mechanism separate. After the switching mechanism and clamping drive mechanism separate, the clamping drive mechanism retracts a small distance under the action of the first reset member 418 until it abuts against the anti-reverse end 354 of the clamping anti-reverse mechanism, thereby preventing the clamping drive mechanism from retracting further and causing the clamp to retract. Because the elastic push rod 232 of the clamping drive mechanism is elastic, it is compressed when the clamping drive mechanism moves forward. Therefore, when the clamping drive mechanism moves backward a short distance under the action of the first reset member 418, the elastic push rod 232 gradually recovers its deformation. At this time, the clamping block 231 still holds the clamp, so the clamp will not move backward when the clamping drive mechanism moves backward a short distance.

[0106] The actuator 330 has a guide channel 340, which includes a starting point a, an ending point, and a locking point b located between the starting point a and the ending point. The distances from the starting point a to the pivot center of the actuator 330 and from the ending point to the pivot center of the actuator 330 are both less than the distance from the locking point b to the pivot center of the actuator 330. When the actuator 330 rotates around its pivot center, the guide channel 340 rotates accordingly, causing relative movement between the guide channel 340 and the guide member 351. The guide member 351 can sequentially pass through the starting point a, the locking point b, and the ending point as the actuator 330 moves. In the first state, the guide member 351 gradually moves relative to the locking point b, and the anti-reverse end 354 gradually approaches the proximal end of the feeding drive mechanism. In the second state, when the guide member 351 moves relative to the locking point b, the anti-reverse end 354 abuts against the proximal end of the feeding drive mechanism to prevent the feeding drive mechanism from retracting. The presence of the clamping anti-retraction mechanism prevents the clamps located within the jaw assembly from retracting and causing problems such as the inability to clamp blood vessels or tissues, thereby improving the reliability and safety of the surgery. A more detailed introduction to actuator 330 will be provided later.

[0107] The jaw driving mechanism includes a proximal jaw driving member and a distal jaw driving member connected to the proximal jaw driving member. In the second state, the switching mechanism drives the proximal jaw driving member to move, thereby driving the distal jaw driving member to move. In this embodiment, the proximal jaw driving member is a jaw driving tube 432, and the distal jaw driving member is a sleeve 210. One end of the sleeve 210 is connected to the jaw driving tube 432, and the other end cooperates with the jaw assembly. In the second state, the switching mechanism engages with the jaw driving tube 432 to drive the jaw driving tube 432 to move, thereby driving the sleeve 210 to drive the jaw assembly to close. The distal inner wall of the jaw driving tube 432 is provided with spaced ribs 436. Adjacent ribs 436 and the inner wall of the jaw driving tube 432 form an annular groove 438. The proximal outer periphery of the sleeve 210 is provided with an annular piece 442, which is embedded in the annular groove 438. The ribs 436 abut against the annular piece 442. The annular plate 442 has circumferentially symmetrical notches 444, and the annular groove 438 has a matching protrusion 440 inside. The protrusion 440 engages with the notch 444 to install the sleeve 210 into place and fix it inside the jaw drive tube 432. The jaw drive mechanism also includes a second reset element 446, such as an elastic element. The elastic element is sleeved on the outside of the jaw drive tube 432, with one end abutting against the baffle 434 on the outer surface of the jaw drive tube 432, and the other end extending forward to abut against the inner wall of the clamp housing 321. The elastic element stores energy when the jaw drive mechanism advances, and releases the energy when the elastic element recovers its deformation, thereby providing power for the jaw drive mechanism to reset and retract.

[0108] The clamping drive mechanism includes a proximal clamping drive member and a distal clamping drive member connected to the proximal clamping drive member. In the first state, the switching mechanism drives the proximal clamping drive member to move, thereby driving the distal clamping drive member to move. The distal clamping drive member includes a base 240 and a clamping assembly, with a channel provided within the base 240. In the first state, the switching mechanism engages with the proximal clamping drive member to drive its movement, thereby driving the clamping assembly to move within the channel, thus driving the clamp into the jaw assembly. More specifically, a guide ramp 243 is provided at the distal end of the channel. The proximal clamping drive member drives the clamping assembly to move within the channel and, passing through the guide ramp 243, to abut against the first clamp in the clamp box 220, thereby driving the first clamp into the jaw assembly. In this embodiment, the proximal clamping drive member is a clamping drive tube 402, fixedly connected to the clamping assembly. A portion of the clamping drive tube 402 is located within the jaw drive tube 432 and can move within it. The base 240 is located outside the clamping box 220. Its first end is fixedly connected to the housing 321 and located inside the clamping drive tube 402. The second end extends from the first end to the distal end and is fixedly connected to the protrusion on the outside of the clamping box 220 by a pin 316. The clamping assembly includes a clamping rod 233, an elastic push rod 232, and a clamping block 231 connected in sequence. Specifically, the proximal end of the clamping rod 233 has a bent portion 406, and the distal end of the clamping drive tube 402 has a matching hole 404 for accommodating the bent portion 406 of the clamping rod 233. The bent portion 406 of the proximal end of the clamping rod 233 passes through the proximal end of the channel of the base 240 and is installed in the matching hole 404 at the distal end of the clamping drive tube 402. The distal end of the clamping rod 233 has a receiving groove 408, and the proximal end of the elastic push rod 232 has a snap-fit ​​portion 410 that matches the receiving groove 408. The snap-fit ​​portion 410 is inserted into the receiving groove 408 to connect the elastic push rod 232 and the clamping rod 233. The distal end of the elastic push rod 232 has an arc-shaped recess 412, and the lug 414 at the proximal end of the clamping block 231 cooperates with the arc-shaped recess 412 to connect the elastic push rod 232 and the clamping head. The channel of the base 240 provides space to accommodate the clamping assembly and facilitates the movement of the clamping assembly within the channel. The clamping drive tube 402 drives the clamping block 231 to move within the channel and through the guide ramp 243 to abut against the clamp, thereby driving the clamp into the jaw assembly. To enhance the strength of the elastic push rod 232 and improve the clamping stability, two or more elastic push rods 232 are provided, each of which is composed of multiple stacked pieces. The elastic push rod 232 itself is elastic and can deform and bend, thereby enabling the clamping block 231 to deliver the clamp into position. For the corresponding structures of the clamping block 231, the clamp, and the clamp box 220, please refer to the detailed description above; it will not be repeated here. The clamping drive mechanism also includes a first reset member 418, such as an elastic element.One end of the elastic element abuts against the protruding rib 436 of the inner wall of the jaw drive tube 432 near the feeding drive tube 402, and the other end extends backward to abut against the distal end face 508 of the feeding drive tube 402. The elastic element is used to store energy when the feeding drive mechanism moves forward. The elastic element restores its deformation and releases the energy, thereby providing power for the reset of the feeding drive mechanism.

[0109] The clamping pliers also include a knob 310, wherein the proximal end of the knob 310 has a protrusion 312, and the distal end of the operating component 300 has a recess that matches the protrusion 312. The recess and the protrusion 312 cooperate to assemble the knob 310 and the operating component 300 together. A pin 316 is provided inside the knob 310, the clamping drive tube 402 is provided with a first oblong hole 420, and the jaw drive tube 432 is provided with a second oblong hole 448. The proximal end of the base 240 is accommodated in the clamping drive tube 402 and is provided with a first pin hole 416. The cooperation between the pin 316 and the first pin hole 416 fixes the base 240 and the knob 310 together. The proximal end of the clamp cassette 220 is also housed within the clamp delivery drive tube 402 and is provided with a second pin hole 404. The engagement of the pin 316 and the second pin hole 404 allows the clamp cassette 220 to be fixedly installed with the knob 310. One end of the pin 316 is installed at a first location on the side wall of the knob 310, and the other end passes through the second oblong hole 448, the first pin hole 416, the second pin hole 404, and the first oblong hole 420 before being installed at another location on the side wall of the knob 310 symmetrical to the first location. This allows the knob 310 to rotate, thereby driving the jaw drive tube 432, the clamp delivery drive tube 402, the base 240, and the clamp cassette 220 to rotate together. This, in turn, drives the cannula 210, the jaw assembly, and the clamp delivery assembly to rotate together, allowing the doctor to adjust the angle to clamp the blood vessel or tissue. Furthermore, the presence of the first oblong hole 420 and the second oblong hole 448 ensures that the forward movement of the clamp feeding drive tube 402 and the jaw drive tube 432 is unaffected by the pin 316. The knob 310 drives the clamp feeding drive mechanism and the jaw drive mechanism to rotate 360 ​​degrees. To improve the doctor's feel when turning the knob 310 and ensure it stops at its current position after any rotation angle for ease of operation, a damping element 318 is provided at the connection between the knob 310 and the handle assembly. More specifically, a groove 314 is provided on the outer periphery of the protrusion 312 near the proximal end of the knob 310. The inner side of the damping element 318 is accommodated within this groove 314, and its outer side abuts against the recessed portion of the handle assembly. The friction between the damping element 318 and the handle assembly increases the force required to turn the knob 310 and ensures it stops at its current position after any rotation angle. This damping element 318 is a rubber ring.

[0110] The following details the working process of the clamping pliers in this embodiment, including clamp feeding and jaw assembly closure:

[0111] The operator presses the actuator 330, causing it to move from the open position to the middle position. This pushes the switching mechanism to drive the clamp feeding drive mechanism forward. The proximal end of the clamp feeding drive tube 402 and the distal end of the switching mechanism gradually approach the proximal end of the jaw drive tube 432. When the actuator 330 reaches the middle position, the moving part of the switching mechanism runs onto the second guide surface 496 inside the housing 321. The locking block 482 disengages from the slot of the clamp feeding drive tube 402, the switching mechanism separates from the clamp feeding drive mechanism, the forward stroke of the clamp feeding drive mechanism ends, and the clamp located at the farthest end of the clamp box 220 is fed into the jaw assembly (clamp feeding action completed). The distal end surface 508 of the switching mechanism abuts against the proximal end surface 502 of the jaw drive mechanism. The anti-reverse end 354 of the clamp feeding anti-reverse mechanism can abut against the clamp feeding drive tube 402 after the switching mechanism separates from the clamp feeding drive mechanism to prevent the clamp in the jaw assembly from retracting due to the retraction of the clamp feeding drive mechanism. Continue pressing the actuator 330. The actuator 330 moves from the middle position towards the closed position, and the clamping anti-retraction mechanism gradually disengages from the clamping drive tube 402. Under the action of the actuator 330, the switching mechanism pushes the jaw drive mechanism forward. The jaw drive tube 432 drives the sleeve 210 forward to close the jaw assembly. When the actuator 330 moves to the closed position, the forward stroke of the jaw drive mechanism ends (jaw closure action is completed), the clamping anti-retraction mechanism completely disengages from the clamping drive tube 402, and the clamping drive tube 402 resets under the action of the first reset member 418. Release the actuator 330, and the jaw drive mechanism resets under the action of the second reset member 446. When the actuator 330 moves from the open position to the intermediate position, the guide 351 of the clamping stop mechanism moves relative to the actuator 330 in the guide channel 340 and locks the actuator 330 in one direction when it reaches the locking point b. That is, the actuator 330 can only move towards the closed position under the action of external force, and cannot move towards the open position. This allows the doctor to clearly know that the clamping action has been completed. After the clamping action is completed, the doctor does not need to keep pressing the actuator 330. The doctor can stop, locate the blood vessel or tissue, and then continue to operate the actuator 330 to perform the clamping action.

[0112] In this embodiment, the transmission mechanism further includes a push-clamp drive mechanism; the transmission mechanism also includes a third state, and the transmission mechanism selectively has a first state and a third state; in the first state, the feed-clamp drive mechanism drives the farthest clamp in the clamp box 220 to move forward into the jaw assembly; in the third state, the push-clamp drive mechanism drives the remaining clamps in the clamp box 220 to move forward one station. Here, "farthest clamp" refers to the aforementioned "first clamp," and "remaining clamps" refers to the aforementioned "other clamps." In this embodiment, the clamping pliers can not only continuously apply clamps, but also, because the first state and the third state are at different times, the feed-clamp drive mechanism performs the feed-clamp action and the push-clamp drive mechanism performs the push-clamp action asynchronously, which can effectively avoid the interference problem between the feed-clamp action and the push-clamp action. At the same time, since the feed-clamp drive mechanism and the push-clamp drive mechanism are independent drive mechanisms, the design space is increased, and the structure of the feed-clamp drive mechanism and the push-clamp drive mechanism is stable and reliable. Therefore, the technical solution of this embodiment is more stable and reliable in performing the feed-clamp and push-clamp actions, improving the safety of the clamping pliers.

[0113] In this embodiment, the transmission mechanism includes a driving member and a mating mechanism. The driving member abuts against the actuator 330 to receive power. One part of the mating mechanism is connected to the driving member, and the other part is connected to the push-clamp driving mechanism, with a distance between the two parts of the mating mechanism. The driving member is used to drive the feeding clamp driving mechanism forward to push the clamp at the farthest end of the clamp box 220 forward into the jaw assembly, and also to drive the mating mechanism to move the push-clamp driving mechanism backward to store energy. The push-clamp driving mechanism includes a third reset member, which is used to store the energy. When the energy is released, the push-clamp driving mechanism moves forward under the action of the third reset member to move the remaining clamps in the clamp box 220 forward by one position. That is, through the mating mechanism, when the feeding clamp driving mechanism moves forward, the push-clamp driving mechanism moves backward to store energy, and the feeding action performed by the feeding clamp driving mechanism and the pushing action performed by the push-clamp driving mechanism are not synchronized. Here, the driving member is the aforementioned switching mechanism, used to selectively drive the feeding clamp driving mechanism or the jaw driving mechanism. In the first state, the driving component separates from the jaw drive mechanism and engages with the clamp feeding drive mechanism to drive the clamp feeding drive mechanism forward, while simultaneously driving the mating mechanism to move and drive the push clamp drive mechanism backward to store first energy. In the second state, the driving component engages with the jaw drive assembly to drive the jaw drive mechanism forward, and separates from the clamp feeding drive mechanism, while simultaneously driving the mating mechanism to move and drive the push clamp drive mechanism backward to store second energy. The first energy and the second energy together constitute the aforementioned energy. In the third state, the push clamp drive mechanism moves forward under the action of this energy to move the remaining clamps in the clamp box 220 forward by one station. That is, the push clamp drive mechanism is connected to the switching mechanism through the mating mechanism, and the push clamp drive mechanism and the switching mechanism move in opposite directions. Under the action of the actuator 330, the switching mechanism first separates from the jaw drive mechanism and engages with the clamp feeding drive mechanism to drive the clamp feeding drive mechanism forward to perform the clamp feeding action, and then separates from the clamp feeding drive mechanism and engages with the jaw drive mechanism to drive the jaw drive mechanism forward to perform the jaw closing action. When the switching mechanism drives the clamping drive mechanism and the jaw drive mechanism forward, it simultaneously drives the mating mechanism to move, thereby driving the push clamp mechanism backward and storing energy. When the actuator 330 is released, the push clamp drive mechanism moves forward under the action of the third reset member to perform the push clamping action. The connection and separation between the switching mechanism and the clamping drive mechanism and the jaw drive mechanism has been described above and will not be repeated here.

[0114] In another embodiment, the drive member does not have a clutch function. The drive member is connected to both the clamp feeding drive mechanism and the clamp pushing drive mechanism. The actuator 330 includes a first actuator 330 and a second actuator 330. The first actuator 330 abuts against the drive member, and the second actuator 330 abuts against the jaw drive mechanism. In the first state, the drive member, under the action of the first actuator 330, drives the clamp feeding drive mechanism forward to move the clamp at the farthest end of the clamp box 220 into the jaw assembly. Simultaneously, it drives the mating mechanism to move, thereby driving the clamp pushing drive mechanism backward to store energy. The clamp pushing drive mechanism includes a third reset member for storing the energy. In the third state, the first actuator 330 is released, and the clamp pushing drive mechanism, under the action of the third reset member, moves forward to move the remaining clamps in the clamp box 220 one position. After releasing the first actuator 330, the second actuator 330 is pressed to drive the jaw drive assembly to close the jaw assembly. Of course, before releasing the first actuator 330 and after the clamping action has been completed, the second actuator 330 can be pressed to drive the jaw drive assembly to close the jaw assembly. After the jaw assembly is closed, the first actuator 330 can be released to allow the push clamp drive mechanism to move forward under the action of the third reset member to move the remaining clamps in the clamp box 220 forward by one station.

[0115] The jaw drive mechanism is sleeved on the clamp feeding drive mechanism. In the first state, the proximal end face 502 of the clamp feeding drive mechanism gradually approaches the proximal end face 502 of the jaw drive mechanism, and the distal end face 508 of the drive member gradually approaches the proximal end face 502 of the jaw drive mechanism. In the second state, the proximal end face 502 of the jaw drive mechanism gradually moves away from the proximal end face 502 of the clamp feeding drive mechanism, and the distal end face 508 of the drive member is in contact with the proximal end face 502 of the jaw drive mechanism. For details regarding the structure and positional relationship of the jaw drive mechanism and the clamp feeding drive mechanism, please refer to the foregoing description; further details will not be repeated here.

[0116] The mating mechanism includes a first mating member, an intermediate member, and a second mating member. The first mating member is connected to the aforementioned driving member, and the second mating member is connected to the push-clamp driving mechanism. The first mating member drives the second mating member through the intermediate member, and their movements are opposite. The driving member drives the first mating member forward. When the first mating member moves forward, the second mating member retracts to cause the push-clamp driving mechanism to retract. The structure of the mating mechanism will be described in detail below.

[0117] The push-clamp drive mechanism also includes a push-clamp drive component. The push-clamp drive component is connected to the mating mechanism and the third reset component. Specifically, one end of the third reset component is connected to the housing 321, and the other end is connected to the proximal end of the second mating component. It is understood that the third reset component can also be directly connected to the push-clamp drive component. The push-clamp drive component is connected to the distal end of the second mating component. The push-clamp drive component has multiple side cavities 252 spaced apart along the longitudinal direction. Each side cavity 252 corresponds to a push-clamp block 253. Under the action of the third reset component, the push-clamp drive component drives the push-clamp block 253 to move forward one position to move the remaining clamps in the clamp box 220. More specifically, the push-clamp drive component includes a proximal push-clamp drive component and a distal push-clamp drive component. Here, the distal push-clamp drive component is the aforementioned push-clamp assembly or push-clamp seat 250. The third reset component can be an elastic element, such as a spring. In this embodiment, the proximal driving component of the push clamp is a mating block 452, and the distal driving component of the push clamp includes a push clamp rod 251 and a push clamp block 253. The proximal end of the mating block 452 is connected to the distal end of the second mating component, and the distal end of the mating block 452 is connected to the push clamp rod 251. Multiple side cavities 252 are evenly spaced along the direction of the push clamp rod 251, and each side cavity 252 corresponds to a push clamp block 253. It can be understood that they can also be arranged at non-equal intervals. Each push clamp block 253 is rotatably disposed within the corresponding side cavity 252 of the push clamp rod 251 via an elastic element 254 (such as a spring). Specifically, the proximal end of the push clamp block 253 is mounted in a pin hole on the upper or lower wall of the side cavity 252 via a rotating shaft. The elastic element 254 is disposed within the side cavity 252, with its proximal end connected to the proximal end of the side cavity 252 and its distal end connected to the proximal end of the push clamp block 253. In the initial state, the distal end of the push clamp block 253 is tilted downward along the offset of the push clamp rod 251 under the action of the elastic element 254, and the distal end of each push clamp block 253 abuts against the tail end of the corresponding clamp in the clamp box 220. When the push clamp rod 251 retracts, the push clamp block 253 is rotated upward around the axis towards the push clamp rod 251 by the upward force of the clamp. Therefore, when the push clamp rod 251 retracts, the push clamp block 253 will not interfere with the clamp. When the retraction action of the push clamp rod 251 ends, each push clamp block 253 moves to abut against the tail end of the clamp adjacent to its proximal end or moves to a predetermined distance behind the clamp adjacent to its proximal end. In the third state, the push clamp rod 251 drives the push clamp block 253 forward. When the push clamp block 253 moves forward, it pushes the remaining clamps in the clamp box 220 forward one station, preparing for the next clamping.

[0118] In order to make full use of the internal space of the clamp and make the clamp structure more compact, and also to make the clamp center of gravity more stable and easier to operate, the feed clamp proximal drive is sleeved on the push clamp proximal drive, and the feed clamp distal drive and the push clamp distal drive are located on both sides of the clamp box 220.

[0119] As described above, the jaw drive mechanism includes a jaw drive tube 432 and a sleeve 210 connected to the jaw drive tube 432. The jaw drive tube 432 drives the sleeve 210 to move, thereby driving the jaw assembly to move. The clamp feeding drive mechanism includes a clamp feeding drive tube 402 and a clamp feeding assembly connected to the clamp feeding drive tube 402. The clamp feeding drive tube 402 drives the clamp feeding assembly to move, thereby driving the clamp at the farthest end of the clamp box 220 to enter the jaw assembly. In order to make the overall structure of the transmission mechanism more compact, make full use of space, and reduce the overall volume of the clamping pliers, the clamp feeding drive mechanism, the jaw drive mechanism, and the clamp pushing drive mechanism are all arranged in the longitudinal direction. The projection of the clamping drive tube 402 onto a plane perpendicular to the longitudinal direction lies within the projection of the jaw drive tube 432 onto that plane. The clamping drive mechanism can move longitudinally within the jaw drive mechanism. The projection of the jaw drive tube 432 onto a plane perpendicular to the longitudinal direction lies within the projection of the drive member (i.e., the switching mechanism) onto that plane. The projection of the proximal push-clamp drive member onto that plane lies within the projection of the clamping drive tube 402 onto that plane. The push-clamp drive mechanism can move longitudinally within the clamping drive mechanism. The distal push-clamp drive member and the clamping assembly are located on opposite sides of the clamp box 220. Furthermore, the proximal clamping drive member, the proximal push-clamp drive member, and the jaw drive tube 432 are coaxial. Specifically, the clamping drive tube 402 is located inside the jaw drive tube 432, and the proximal end of the push-clamp drive component is located inside the clamping drive tube 402, allowing it to move within the clamping drive tube 402. More specifically, the proximal end of the mating block 452 is located inside the clamping drive tube 402, and the push-clamp rod 251 and the clamping assembly are located on opposite sides of the clamp box 220. For details regarding the structure and position of the clamp box 220, please refer to the foregoing description; further details will not be repeated here.

[0120] As described above, the clamping pliers include a knob 310, and a pin 316 is provided inside the knob 310. One end of the pin 316 is installed at a first location on the side wall of the knob 310, and the other end passes through the proximal drive of the jaw drive mechanism, the proximal drive of the clamp feeding drive mechanism, the base 240, and the clamp box 220 and is installed at another location on the side wall of the knob 310, which is symmetrical to the first location. The proximal drive of the jaw drive mechanism is provided with a second waist-shaped hole 448, the proximal drive of the clamp feeding drive mechanism is provided with a first waist-shaped hole 420, the base 240 is provided with a first pin hole 416, and the clamp box 220 is provided with a second pin hole 404. In order to enable the push clamp drive mechanism to rotate with the knob 310, the proximal drive component of the push clamp drive mechanism is provided with a third oblong hole 458 for accommodating the pin 316. One end of the pin 316 is installed at the first position on the side wall of the knob 310, and the other end passes through the first oblong hole 420, the second oblong hole 448, the first pin hole 416, the second pin hole 404 and the third oblong hole 458 and is installed at another position on the side wall of the knob 310, symmetrical to the first position. This allows the jaw drive mechanism, the clamp feeding drive mechanism, the clamp box 220 and the push clamp drive mechanism to rotate with the knob 310.

[0121] The following details the working process of the clamping pliers, including clamp feeding, jaw assembly closure, and clamp push-out:

[0122] The operator presses the actuator 330, causing it to move from the open position to the middle position. The drive (i.e., the switching mechanism) is driven forward by the actuator 330, while the mating mechanism drives the push-clamp drive mechanism to move backward. When the push-clamp drive mechanism moves backward, its third reset component stores energy. During this process, the proximal end of the clamping drive tube 402 and the distal end of the drive gradually approach the proximal end of the jaw drive tube 432. When the actuator 330 moves to the middle position, the moving part of the drive runs onto the second guide surface 496 inside the housing 321. The locking block 482 disengages from the slot of the clamping drive tube 402, the drive separates from the clamping drive mechanism, the forward stroke of the clamping drive mechanism ends, and the clamp located at the farthest end of the clamp box 220 is fed into the jaw assembly (clamping action completed). The distal end surface 508 of the drive abuts against the proximal end surface 502 of the jaw drive mechanism. The stop end 354 of the clamping stop mechanism can abut against the clamping drive tube 402 after the driving member separates from the clamping drive mechanism to prevent the clamp in the jaw assembly from retracting due to the retraction of the clamping drive mechanism. Continuing to press the actuator 330 causes it to move from the middle position towards the closed position, and the clamping stop mechanism gradually disengages from the clamping drive tube 402. Under the action of the actuator 330, the driving member pushes the jaw drive mechanism forward, while simultaneously driving the mating mechanism to retract the clamping drive mechanism. When the clamping drive mechanism retracts, its third reset member continues to store energy, and the jaw drive tube 432 drives the sleeve 210 forward to close the jaw assembly. This continues until the pressing actuator 330 moves to the closed position, at which point the jaw drive mechanism's forward stroke ends (jaw closure action is completed), the third reset member's energy storage ends, the clamping stop mechanism completely disengages from the clamping drive tube 402, and the clamping drive tube 402 resets under the action of the first reset member 418. Release actuator 330, jaw drive mechanism resets under the action of second reset member 446, push clamp drive mechanism advances under the action of third reset member to move the remaining clamp in clamp box 220 forward by one station (push clamp action completed).

[0123] The above-mentioned coupling mechanism is described in detail below.

[0124] The coupling mechanism includes a first coupling component, an intermediate component, and a second coupling component. The first coupling component drives the second coupling component through the intermediate component. The firing drive mechanism is linked to the first coupling component; the automatic firing drive mechanism is linked to the second coupling component. The movement direction of the first coupling component is opposite to that of the second coupling component. The firing drive mechanism includes the aforementioned clamping drive mechanism and jaw drive mechanism, used to complete the clamping action and the clamping action (jaw closing action). The automatic firing drive mechanism is the aforementioned push-clamp drive mechanism, used to complete the push-clamp action. Here, "linkage" refers to the connection of two moving parts, with their movement directions being the same and moving synchronously. The clamping drive mechanism and the push-clamp drive mechanism are independent drive mechanisms, increasing design space and enabling more reliable and stable execution of the clamping and pushing actions. The coupling mechanism achieves asynchrony between the push-clamp action and the clamping / applying actions, effectively avoiding interference between the clamping and pushing actions, thereby effectively improving the safety and reliability of the clamping forceps.

[0125] The firing drive mechanism is linked to the first mating member via a switching mechanism. The switching mechanism selectively drives the clamping drive mechanism and the jaw drive mechanism. Specifically, the proximal end of the switching mechanism is fixedly connected to the first mating member, and the switching mechanism is detachably connected to the firing drive mechanism. Pressing the actuator 330 causes the switching mechanism to first drive the clamping drive mechanism forward to perform a clamping action, and then drive the jaw drive mechanism forward to perform a clamping action. Simultaneously, it drives the first mating member forward, and then drives the continuous firing drive mechanism backward to store energy. The continuous firing drive mechanism includes a third reset member for storing this energy. Releasing the actuator 330 causes the continuous firing drive mechanism to advance under the action of the third reset member to perform a clamping action. The structure, positional relationship, and connection relationship of the switching mechanism, clamping drive mechanism, jaw drive mechanism, and clamping drive mechanism are the same as described above and will not be repeated here.

[0126] The first mating component includes an upper rack 462, the second mating component includes a lower rack 468, and the intermediate component includes a first gear 464 and a second gear 466. The upper rack 462 meshes with the first gear 464, and the lower rack 468 meshes with the second gear 466. The first gear 464 and the second gear 466 are coaxially arranged, and the diameter of the first gear 464 is larger than the diameter of the second gear 466. That is, the firing drive mechanism is connected to the upper rack 462 through a switching mechanism, and the continuous firing drive mechanism is connected to the lower rack 468. The upper rack 462 and the lower rack 468 move in opposite directions. When the upper rack 462 moves a first distance in a first direction, the lower rack 468 moves a second distance in a direction opposite to the first direction. In other words, when the firing drive mechanism moves a first distance in the first direction, the continuous firing drive mechanism moves a second distance in a second direction opposite to the first direction, and the first distance is greater than the second distance. The first direction is the forward direction of the clamping drive mechanism and the jaw drive mechanism. During the initial forward movement of the firing drive mechanism, the clamping and clamping actions need to be completed. During the second backward movement, the continuous firing drive mechanism stores energy, releases the actuator 330, and then moves forward to complete the clamping action. The backward movement is equal to the forward movement, which is equal to the distance the clamps in the clamp box 220 move forward one station. The second backward movement is less than the first movement of the firing drive mechanism, allowing the clamps in the clamp box 220 to be arranged as closely as possible. In other words, the clamp box 220 can hold more clamps, allowing for more consecutive clamping operations and meeting the surgeon's needs.

[0127] To make the layout of the mating mechanism more reasonable and the structure more compact, the first mating component and the second mating component are arranged in the longitudinal direction, and the intermediate component is arranged between the first mating component and the second mating component, and in a direction perpendicular to the longitudinal direction.

[0128] To achieve a more compact overall structure, the continuous firing drive mechanism and the second mating member move longitudinally within the clamping drive mechanism. The axis of the first mating member is perpendicular to the axis of the intermediate member and parallel to the axis of the second mating member; the axis of the second mating member is coaxial with the axis of the proximal drive member (matting block 452) of the continuous firing drive mechanism and the axis of the proximal drive member (clamping drive tube 402 and jaw drive tube 432) of the firing drive mechanism. To ensure smoother movement of the first and second mating members without wobbling, a first guide groove 472 and a second guide groove 474 are provided within the housing 321. The first mating member moves within the first guide groove 472, and the second mating member moves within the second guide groove 474.

[0129] As described above, the rapid-fire drive mechanism includes a push-clamp drive component and a third reset component. The push-clamp drive component is connected to the distal end of the second mating component. The push-clamp drive component has multiple side cavities 252 spaced apart along the longitudinal direction. Each side cavity 252 corresponds to a push-clamp block 253. The push-clamp drive component moves under the action of the third reset component, causing the push-clamp block 253 to move to perform the push-clamp action. The third reset component stores energy when the rapid-fire drive mechanism retracts. In order to make the overall structure more compact and make full use of space, the third reset component of the rapid-fire drive mechanism is located in the second guide groove 474, with one end connected to the proximal end of the second mating component and the other end connected to the housing 321 located near the end of the second guide groove 474.

[0130] To ensure that the second mating member connected to the automatic firing drive mechanism does not rotate when the knob 310 is rotated, the distal end of the second mating member has a receiving space. For ease of installation, the receiving space has an opening, through which the proximal end of the push-clamp drive member is received within the receiving space and can rotate within the receiving space. The proximal end of the push-clamp drive member has a stop portion 506 that abuts against the limiting surface 470 within the receiving space to axially fix the automatic firing drive mechanism and the distal end of the second mating member.

[0131] The following section, in conjunction with the mating mechanism, details the working process of the clamping pliers' transmission mechanism in performing the clamping, clamping, and pushing actions:

[0132] The operator presses the actuator 330, causing it to move from the open position to the middle position. Under the action of the actuator 330, the switching mechanism drives the clamping drive mechanism and the first mating member forward. At the same time, the first mating member drives the second mating member backward through the intermediate member. Since the second mating member is connected to the push clamping drive mechanism, it drives the push clamping drive mechanism backward. When the push clamping drive mechanism moves backward, its third reset member 456 stores energy. During this process, the proximal end of the clamping drive tube 402 and the distal end of the switching mechanism gradually approach the proximal end of the jaw drive tube 432. When the actuator 330 moves to the middle position, the moving part of the switching mechanism runs onto the second guide surface 496 inside the housing 321. The locking block 482 of the switching mechanism disengages from the slot of the clamping drive tube 402, and the switching mechanism separates from the clamping drive mechanism. The forward stroke of the clamping drive mechanism ends (clamping action completed). The anti-retraction end 354 of the clamping anti-retraction mechanism can abut against the clamping drive tube 402 after the switching mechanism and the clamping drive mechanism are separated to prevent the clamp in the jaw assembly from retracting due to the retraction of the clamping drive mechanism. Continuing to press the actuator 330, the actuator 330 moves from the middle position towards the closed position, and the clamping anti-retraction mechanism gradually disengages from the clamping drive tube 402. Under the action of the actuator 330, the switching mechanism continues to push the jaw drive mechanism and the first mating member forward. At the same time, the first mating member continues to drive the second mating member backward through the intermediate member. Since the second mating member is connected to the push clamp drive mechanism, the push clamp drive mechanism continues to retract. When the push clamp drive mechanism retracts, its third reset member 456 continues to store energy. The jaw drive tube 432 drives the sleeve 210 forward to close the jaw assembly (clamping action completed). The energy storage of the third reset member 456 ends, and the clamping anti-retraction mechanism completely disengages from the clamping drive tube 402. The clamping drive tube 402 resets under the action of the first reset member 418. Release actuator 330, jaw drive mechanism resets under the action of second reset member 446, push clamp drive mechanism advances under the action of third reset member 456 to move the remaining clamp in clamp box 220 forward by one station (push clamp action completed).

[0133] In this embodiment, the clamp feeding drive mechanism is used to drive the clamp at the farthest end of the clamp box 220 to move forward into the jaw assembly, and the clamp pushing drive mechanism is used to drive the remaining clamps in the clamp box 220 to move forward one station. The clamp feeding drive mechanism includes a clamp feeding proximal drive and a clamp feeding distal drive connected to the clamp feeding proximal drive, and the clamp pushing drive mechanism includes a clamp pushing proximal drive and a clamp pushing distal drive connected to the clamp pushing proximal drive. The movement trajectory of the clamp feeding proximal drive is parallel to the movement trajectory of the clamp pushing proximal drive, and the movement trajectory of the clamp feeding distal drive intersects with the movement trajectory of the clamp pushing distal drive. Using different drive mechanisms to perform the clamp feeding and clamp pushing actions separately increases the design space and enables more reliable and stable execution of the clamp feeding and clamp pushing actions. Moreover, the clamp feeding action is executed earlier than the clamp pushing action, and the two actions are asynchronous and will not interfere with each other, thereby effectively improving the safety and reliability of the clamping clamp.

[0134] It should be noted that in this implementation,

[0135] The motion trajectory refers to the trajectory formed by the movement of points on a component. When the motion trajectories of component A and component B are both straight lines, if at least one straight line in the motion trajectory of component A is collinear with at least one straight line in the motion trajectory of component B, then the motion trajectories of component A and component B are said to be "coaxial". If all straight lines in the motion trajectory of component A are parallel to all straight lines in the motion trajectory of component B, then the motion trajectories of component A and component B are said to be "parallel". The motion trajectory of a component refers to the trajectory formed within one execution cycle.

[0136] In this embodiment, the push-clamp proximal drive is movably located within the feed-clamp proximal drive, while the feed-clamp distal drive and the push-clamp distal drive are located on opposite sides of the clamp box 220. Specifically, the push-clamp distal drive is located on the side of the clamp box 220 that accommodates the clamp (inner side of the clamp box 220), and the feed-clamp distal drive is located on the side of the clamp box 220 that does not accommodate the clamp (outer side of the clamp box 220). As described above, the feed-clamp proximal drive moves forward in the longitudinal direction and drives the feed-clamp distal drive from the outer side of the clamp box 220 to the plane where the clamp is located and abuts against the clamp at the farthest end of the clamp box 220, thereby pushing the clamp forward to the jaw assembly. When the feed-clamp driving mechanism retracts, the feed-clamp proximal drive drives the feed-clamp distal drive back to the initial position along the original path. The proximal push clamp drive moves backward in the longitudinal direction, driving the distal push clamp drive to move backward as well. As the distal push clamp drive moves backward, its distal end moves from its contact position with the corresponding clamp on the inner side of the clamp box 220 away from the bottom wall 221 of the clamp box 220 to behind the clamp adjacent to its proximal end. When the proximal push clamp drive moves forward in the longitudinal direction, it drives the distal push clamp drive forward to push the remaining clamps in the clamp box 220 forward by one station. Therefore, during the movement of the transmission mechanism, the movement trajectory of the distal push clamp drive intersects with the movement trajectory of the distal push clamp drive. This intersection includes the intersection of the component movement trajectories themselves and the intersection of their extensions. The movement trajectory of the proximal push clamp drive is parallel to the movement trajectory of the distal push clamp drive.

[0137] In this embodiment, the feeding proximal drive component is sleeved within the pushing proximal drive component, making the transmission mechanism more compact and making full use of space. The feeding drive mechanism and the pushing drive mechanism can move within the jaw drive mechanism. The jaw drive mechanism moves forward or backward in the longitudinal direction, its trajectory parallel to or intersecting with the trajectory of the feeding proximal drive component or the pushing proximal drive component, and intersecting with or intersecting with the trajectory of the feeding distal drive component or the pushing distal drive component. The jaw drive mechanism includes a jaw drive tube 432 and a sleeve 210 connected to it. The jaw drive tube 432 drives the sleeve 210 to close the jaw assembly. The trajectory of the jaw drive tube 432 and the trajectory of the sleeve 210 together form the trajectory of the jaw drive mechanism. This design makes the layout of the transmission mechanism reasonable and the structure compact.

[0138] The proximal clamping drive includes a clamping drive tube 402, and the distal clamping drive includes a clamping block 231. The clamping block 231 is used to drive the clamps into the jaw assembly. The proximal pushing drive includes a mating block 452, and the distal pushing drive includes a pushing block 253. The pushing block 253 is used to drive the remaining clamps in the clamp box 220 to move forward one position. The movement trajectory of the clamping drive tube 402 is parallel to the movement trajectory of the mating block 452 and the movement trajectory of the jaw drive mechanism. The movement trajectory of the clamping block 231 intersects with the movement trajectory of the pushing block 253 and the movement trajectory of the jaw drive mechanism. To make the overall structure more compact, the mating block 452 is partially located inside the clamping drive tube 402 and can move longitudinally within the clamping drive tube 402. The proximal end of the clamping drive tube 402 is located inside the jaw drive tube 432 and can move longitudinally within the jaw drive tube 432.

[0139] The clamping block 231 is connected to the clamping drive tube 402 via the clamping rod 233. The clamping drive mechanism also includes a base 240 fixed to the housing 321, which is slidably engaged with the clamping rod 233. A guide ramp 243 is provided at the distal end of the base 240 to guide the clamping block 231 out of the base 240 to drive the clamp at the farthest end of the clamp box 220. The movement trajectory of the clamping rod 233 is parallel to the movement trajectory of the jaw drive mechanism. The pushing block 253 is connected to the mating block 452 via the pushing rod 251. Multiple side cavities 252 are provided along the direction of the pushing rod 251, and each side cavity 252 corresponds to a pushing block 253. The movement trajectory of the pushing rod 251 is parallel to the movement trajectory of the jaw drive mechanism. This design makes the overall layout reasonable and makes full use of space.

[0140] The motion trajectories of the feeding clamp 231 and the pushing clamp 253 are described in detail below. Please refer to [link / reference]. Figure 23A and Figure 23BThis is a schematic diagram of the movement process and trajectory of the clamping block 231 when the clamping drive mechanism moves forward. As mentioned above, the clamping block 231 moves from the first plane where the base 240 is located to the guide slope 243 at the far end of the base 240, and then moves along the guide slope 243 to the second plane where the clamp is located, where it abuts against the farthest clamp in the clamping box 220. Its movement process is as follows: Figure 23A As shown, a schematic diagram of the trajectory formed by any point on it can be derived as follows: Figure 23B As shown. Figure 24A and Figure 24B The diagram shows the motion process and trajectory of the push-clamp block 253 as the push-clamp drive mechanism retracts. As previously described, the push-clamp block 253 retracts with the push-clamp drive mechanism. When it retracts to the clamp adjacent to its proximal end, the distal end of the push-clamp block 253 is subjected to an upward force from the clamp and rotates upward around the pivot axis. Continuing to retract, when the distal end of the push-clamp block 253 reaches behind the clamp adjacent to its proximal end, the distal end of the push-clamp block 253 is rotated downward to its original position under the action of a spring. The motion process is as follows: Figure 24A As shown, the motion trajectory of the pusher block 253 can be derived. Taking the distal end E of the pusher block 253 as an example, the schematic diagram of its motion trajectory is shown below. Figure 24B As shown. It should be noted that this is only an illustrative indication; the movement trajectory may be adjusted depending on the actual design, such as the curvature of the curve. It can be seen that during the movement of the transmission mechanism, the movement trajectory of the feeding block 231 intersects with the movement trajectory of the pushing block 253.

[0141] The transmission mechanism also includes a switching mechanism and a mating mechanism. The switching mechanism is used to selectively drive the clamping drive mechanism or the jaw drive mechanism. The mating mechanism is connected to the switching mechanism at one end and to the clamping drive mechanism at the other end, with a distance between the two ends. Under the action of the actuator 330, the switching mechanism sequentially drives the clamping drive mechanism and the jaw drive mechanism to move along a first direction, while simultaneously driving the mating mechanism to drive the clamping drive mechanism to move along a second direction to store energy, wherein the first direction and the second direction are opposite. The clamping drive mechanism includes a third reset member 456 for storing this energy. Releasing the actuator 330 causes the clamping drive mechanism to advance under the action of the third reset member 456 to move the remaining clamps in the clamp box 220 forward by one station. The movement trajectory of the switching mechanism is coaxial with the movement trajectory of the jaw drive mechanism, making full use of space and resulting in a more compact structure. The mating mechanism includes a first mating component and a second mating component driven by the first mating component. The first mating component is connected to the switching mechanism, and the second mating component is connected to the push-clamp drive mechanism. The movement trajectory of the first mating component is parallel to the movement trajectory of the jaw drive mechanism, and the movement trajectory of the second mating component is also parallel to the movement trajectory of the jaw drive mechanism. This makes the overall transmission mechanism more compact and makes full use of space.

[0142] In this embodiment, as Figures 25 to 33D As shown, the clamp also has a structural design to lock the wrench in a special position, the specific details of which are as follows.

[0143] In this embodiment, the wrench is movably connected to the housing 321 of the main body 320. The wrench can move to three specific positions: initially, when the user does not operate the wrench, the wrench is in the open position; when the user operates the wrench and clamping is completed, the wrench is in the intermediate position; and when the user operates the wrench and clamping is completed, the wrench is in the closed position, at which point the user cannot operate the wrench further. From the initial moment, the user maintains operation of the wrench, and the wrench moves from the open position to the intermediate position and then to the closed position. The movement of the wrench toward the closed position is defined as the positive movement of the wrench. The movement of the wrench from the open position toward the intermediate position and the movement of the wrench from the intermediate position toward the closed position are both positive movements. Correspondingly, the movement of the wrench toward the open position is defined as the reset movement of the wrench. Similarly, the movement of the wrench from the closed position toward the intermediate position and the movement of the wrench from the intermediate position toward the open position are both reset movements. The wrench's movement from the open position to the middle position is defined as the first forward motion; the wrench's movement from the middle position to the closed position is defined as the second forward motion; the wrench's movement from the closed position to the middle position is defined as the second reset motion; and the wrench's movement from the middle position to the open position is defined as the first reset motion. When the user operates the wrench to perform a forward motion, in response to the user's operation, the wrench moves from the open position to the middle position and then to the closed position.

[0144] As described above, at least a portion of the clamping drive mechanism and at least a portion of the jaw drive mechanism are housed within the housing 321, such as the clamping proximal drive and jaw proximal drive mentioned above. The clamping drive mechanism and jaw drive mechanism are connected to the wrench and driven forward by the wrench. The clamping drive mechanism responds to the wrench moving from the open position to the intermediate position by driving the clamp forward to enter the jaw assembly. When the wrench is in the intermediate position, the clamp is in the ready position, i.e., the first segment of the wrench's forward movement drives the clamping action and achieves clamping into place. The ready position is the position where the first clamp is stably clamped by the jaw assembly and can be effectively compressed to a closed state. If the clamp slides within the jaw assembly and is not in the ready position, insufficient support for the clamp will occur during clamping, causing the clamp to automatically pop out or twist, resulting in poor compression. The jaw drive mechanism responds to the wrench moving from the middle position to the closed position and drives the jaw drive mechanism to move in the previous direction, thereby driving the jaw assembly to close. When the wrench is in the closed position, the jaw assembly is in the closed state, that is, the second stage of the wrench's forward movement drives the closing action and realizes the jaws closing to the bottom and clamping in place. Clamping in place means that the clamp in the jaw assembly is compressed to the closed state.

[0145] The clamping pliers in this embodiment are capable of continuously applying multiple clamps. To achieve continuous clamping, the wrench needs to be reset to the open position to prepare for the next clamping action. If the user still has to manually reset, it's cumbersome and results in a poor user experience. In this embodiment, the clamping pliers also include a wrench reset mechanism connected to the wrench. When the user stops operating the wrench, the wrench reset mechanism drives the wrench to perform a reset motion, the direction of which is opposite to the forward motion. The wrench reset mechanism includes an elastic element. When the wrench moves forward, the elastic element is compressed and deformed to store energy. When the wrench is not operated, the elastic element recovers its shape under the action of the stored energy, providing a reset force to make the wrench perform a reset motion. In this embodiment, the wrench reset mechanism is the third reset member 456 of the push-clamp drive mechanism. The connection between the third reset member 456 and the wrench is as described above. When the wrench is released, the reset motion of the third reset member 456 itself drives the input member to move backward through the aforementioned mating structure, thereby causing the driving surface 504 of the input member to push the wrench to perform a reset motion. In another embodiment, the wrench reset mechanism includes not only the third reset member 456, but also the second reset member 446 of the jaw drive mechanism. During the movement of the wrench from the closed position to the middle position, in addition to the third reset member 456 providing a reset force to the handle, the second reset member 446 also provides a reset force to the handle. Specifically, during the movement of the wrench from the closed position to the middle position, the jaw drive tube 432 and the input member remain in contact. When the second reset member 446 performs its own reset movement, it drives the jaw drive tube 432 to retract. The jaw drive tube 432 pushes the input member to retract, thereby the drive surface 504 of the input member pushes the wrench to perform a reset movement until the jaw drive tube 432 returns to its initial position and disengages from the input member. From this moment on, the third reset mechanism will provide a reset force to the wrench alone.

[0146] When a doctor operates a wrench in a forward motion to sequentially perform clamp insertion and application, the lack of a clear pause or boundary between the clamp insertion and application actions can lead to a poor user experience. This embodiment of the clamping forceps also includes a wrench locking mechanism. The wrench locking mechanism includes a guide member 351 and a guide channel 340 disposed on the wrench and moving with it. The guide channel 340 includes a starting point a, a locking point b, and an ending point. At least a portion of the guide member 351 is housed within the guide channel 340, and the guide member 351 moves relative to the guide channel 340. In response to the wrench moving from the open position to the intermediate position, the guide member 351 moves relative to the starting point a to the locking point b. In response to the wrench moving from the intermediate position to the closed position, the guide member 351 moves relative to the locking point b to the ending point. During the user's forward movement of the wrench, if the wrench is in the intermediate position when not in operation, the guide member 351 prevents the wrench from resetting at the locking point b. The user operates the wrench, causing it to move, which in turn moves the guide channel 340. This movement of the guide channel 340 relative to the guide member 351 is also referred to as the movement of the guide member 351 relative to the guide channel 340 or the relative movement of the guide member 351. The guide channel 340 is a closed channel within the wrench, preventing the guide member 351 from disengaging from the guide channel 340 and thus from disengaging from the wrench. Therefore, the locking point b of the wrench locking mechanism provides a pause point for the clamping and clamping actions. The doctor can observe at this pause point whether the position of the jaw assembly is suitable for the tissue to be clamped, and adjust the position of the jaw assembly if necessary, improving the user experience. The locking point b is provided by the wrench's own structure, resulting in a simple structure. The guide channel 340 on the wrench is a closed channel, ensuring stable movement of the guide member 351 and a stable locking effect of the wrench.

[0147] Furthermore, in the guide channel 340, the guide member 351 prevents the wrench from resetting only when it is located at locking point b. That is, the guide channel 340 provides only one locking point b to prevent the wrench from resetting. When the wrench is moving forward, if it is in any position other than the open or intermediate position when operation stops, the wrench reset mechanism will drive the wrench to reset. Thus, during wrench operation, the wrench is locked only in the intermediate position to indicate completion of clamping, without interference from other positions, improving the user experience.

[0148] Furthermore, before reaching the closed position, the wrench moves forward between the intermediate and closed positions. When the wrench is stopped, the wrench reset mechanism drives the wrench to reset to the intermediate position. The guide 351 responds to the wrench's reset movement to the intermediate position and moves to the locking point b, preventing the wrench from continuing its reset movement at the locking point b. This further utilizes the single locking point provided by the guide channel 340 to prevent the wrench from resetting. If the wrench is stopped during clamping, it will stop at the intermediate position after clamping is complete, instead of directly resetting to the open position. This prevents the user from operating the wrench past the intermediate position and being unable to know the clamping completion status, providing the user with the opportunity to observe the surgical situation and adjust the clamping position of the jaw assembly before clamping is complete, thus improving the user experience.

[0149] Furthermore, when the wrench reset mechanism drives the wrench to the intermediate position, it simultaneously drives the jaw drive mechanism to move backward, thereby opening the jaw assembly. Regardless of whether the second reset movement occurs before or after the wrench reaches the closed position, it will drive the jaw drive mechanism backward and open the jaw assembly. Specifically, if the clamping forceps have begun clamping but haven't completed it, the wrench hasn't reached the closed position, the jaw assembly isn't fully closed, and the clamp isn't compressed to the closed state, releasing the wrench at this point allows the clamping process to be abandoned. The jaw assembly returns to the fully open state, and the clamp returns to the open state. Subsequent adjustments to the jaw assembly's position on the tissue will not damage the tissue. This design is safer and more user-friendly.

[0150] The guide channel 340 is a closed groove. The closed groove is a groove surrounded on all four sides, restricting the guide member 351 from moving outwards within the groove and preventing it from leaving. Therefore, in this embodiment, the guide member 351 cannot disengage from the wrench. The closed groove provides a fixed movement channel for the guide member 351, resulting in strong movement stability, and consequently, good locking stability between the guide member 351 and the guide channel 340 at locking point b. In this embodiment, specifically as follows... Figure 25 As shown, the closed groove is a closed groove that penetrates the body 320 of the wrench and is radially perpendicular to the axial direction. In other embodiments, the guide channel 340 may also be a closed groove that does not penetrate the body 331 of the wrench; it is only necessary to provide a closed channel in which the guide member 351 moves.

[0151] In this embodiment, as Figure 25As shown, the wrench includes a wrench body 331, a user-operated pressing part 332 disposed at one end of the wrench body 331, and a pushing part 333 disposed at the other end of the trigger body 320. The pushing part 333 abuts against and pushes the clamping drive mechanism or jaw drive mechanism to move. The wrench body 331 is provided with a pivot end 334 that is pivotally connected to the housing 321 of the main body 320 of the operating component 300. The guide channel 340 is located in the wrench body 331 and between the pivot end 334 and the pushing part 333. Thus, the guide channel 340 is located in the middle position of the wrench, which further improves the stability of the movement of the guide member 351, and no additional structure is required to set the guide channel 340, making the wrench locking mechanism compact.

[0152] In this embodiment, as Figure 26 As shown, the guide channel 340 includes a main channel 341 and a secondary channel 343 extending from the opening 342 of the main channel 341. The opening 342 is located between the two ends of the main channel 341. The two ends of the main channel 341 are respectively provided with a starting point a and an ending point. The end of the secondary channel 343 away from the opening 342 is provided with a locking point b. The wrench body 331 also includes a wrench locking elastic element 355. The wrench locking elastic element 355 applies a force to the guide member 351 to disengage from the main channel 341 and enter the secondary channel 343, thereby driving the guide member 351 to disengage from the main channel 341 and enter the secondary channel 343. With this structure, the guide channel 340 provides only one locking point to prevent the wrench from resetting. If the wrench is released during the first forward movement before reaching the middle position, it will reset to the open position and stop. If the wrench is released before reaching the closed position while moving forward from the middle position, it will reset to the middle position and be locked in that position by the locking point b of the aforementioned wrench locking mechanism, preventing further reset movement. Therefore, from the moment the clamping action is completed until the clamping action is completed, releasing the wrench will allow the user to clearly feel the wrench pause in the middle position. This pause is unique and undisturbed, informing the user that clamping has been completed but not yet. The user can also adjust the position of the clamping clamp, resulting in a better user experience.

[0153] From the channel 343, which includes a blocking wall 344, when the wrench is not operated and the guide 351 is at the locking point b, the guide 351 abuts against the blocking wall 344 in the direction of the wrench's reset movement, thereby preventing the wrench from resetting at the locking point b. In other words, the blocking wall 344 prevents the guide 351 at the locking point b from moving towards the starting point a. By employing a simple channel wall design from the channel 343, locking is achieved at the locking point b without requiring additional locking components, resulting in a simple and compact structure.

[0154] The main channel 341 includes a first wall extending from the starting point a to connect with the blocking wall 344, the first wall and the blocking wall 344 forming a right angle or an acute angle. This simple angle design of the guide channel ensures that the blocking wall 344 effectively prevents the guide 351 from disengaging from the locking point b of the secondary channel 343. Furthermore, during forward movement, when the guide 351 enters the secondary channel 343 from the main channel 341, it will emit a collision sound when passing through the right angle or acute angle, clearly reminding the user that the wrench has reached the middle position and that the clamping is now in place.

[0155] The channel 343 also includes a guide wall 345 connected to the blocking wall 344. The guide wall 345 guides the guide member 351 to move bidirectionally between the locking point b and the end point. The simple channel wall design of the channel 343 enables bidirectional movement between the locking point b and the end point, ensuring the wrench is not locked in either direction. It can be easily operated by the user to the closed position or reset to the intermediate position without requiring additional guiding elements, resulting in a simple and compact structure.

[0156] The main channel 341 also includes a second wall extending from the end point to connect with the guide wall 345, the second wall forming an obtuse angle with the guide wall 345. This simple angular design of the guide channel further ensures bidirectional movement between the locking point b and the end point, preventing the wrench from being locked in either direction.

[0157] Specifically, such as Figure 25As shown, the main channel 341 is an arc-shaped channel centered on the pivot end 334 of the wrench. The secondary channel 343 extends from the opening 342 of the main channel 341 in a direction away from the pivot end 334. That is, the distance between the secondary channel 343 and the pivot end 334 is greater than the distance between the main channel 341 and the pivot end 334. The distance between the guide 351 located in the main channel 341 and the pivot end 334 is defined as X. Since the main channel 341 is the aforementioned arc-shaped channel, the distance X of the guide 351 remains unchanged when the main channel 341 moves (including when it is at the starting point a and the ending point). The distance between the guide 351 and the pivot end 334 when it is located in the secondary channel 343 is defined as Y. As the guide 351 enters the secondary channel 343 and moves towards the locking point b, Y continuously increases and is always greater than X. In particular, the distance Y0 of the guide 351 when it is located at the locking point b is the maximum value. As can be seen from the above, when the wrench is moved and the guide member 351 only moves relative to the main channel 341, the guide member 351 does not actually move relative to the housing 321. In this application, the guide channel 340 is not limited to the shape described above. In other embodiments, for example, the main channel 341 is an arc-shaped channel, and the distances from the two ends of the arc-shaped channel to the pivot end 334 are different, but the X of the arc-shaped channel is still less than Y, thus achieving the wrench locking function described above. Any guide channel 340 structure that can be easily conceived by those skilled in the art to ensure locking at the locking point b through cooperation with the secondary channel 343 is within the protection scope of this application.

[0158] In this embodiment, in order to enable the "wrench locking elastic element 355 to drive the guide 351 to disengage from the main channel 341 and enter the secondary channel 343", the wrench locking mechanism further includes a guide pivot 350. The guide pivot 350 is housed in the housing 321. The guide pivot 350 includes a pivot end 352 pivotally connected to the housing 321, a force-receiving end 353 extending from the pivot end 352, and the aforementioned guide 351. One end of the wrench locking elastic element 355 abuts against the force-receiving end 353, and the other end abuts against the housing 321. When the elastic force of the wrench locking elastic element 355 acts on the force-bearing end 353, it drives the guide pivot 350 to rotate around the pivot end 352 as the rotation center. At the same time, it also drives the guide 351 to rotate around the pivot end 352 as the rotation center. In this way, the guide pivot 350 limits the arc-shaped movement trajectory of the guide 351, ensuring that it can stably switch back and forth between the main channel 341 and the secondary channel 343, further ensuring the stability of the wrench locking mechanism.

[0159] Specifically, such as Figure 27As shown, in this embodiment, the guide pivot 350 includes a first rotating arm 526 and a second rotating arm 526 extending from the pivot end 352 respectively. The end of the first rotating arm 526 is the force-bearing end 353. The guide 351 is disposed at the end of the second rotating arm 526. One end of the wrench locking elastic element 355 is connected to the force-bearing end 353, and the other end of the wrench locking elastic element 355 is connected to the housing 321. The first and second rotating arms 526 form a lever with the pivot pin at the pivot end 352 as the fulcrum. The wrench locking elastic element 355 and the guide member 351 are located at both ends of the lever. This structure is stable. The wrench locking elastic element 355 is in a compressed state, applying a thrust to the force-bearing end 353, causing the force-bearing end 353 and the guide member 351 to tend to rotate clockwise. Thus, when the guide member 351 moves from the main channel 341 to the opening 342, it rotates clockwise and lifts upwards into the secondary channel 343, continuing until it reaches the locking point b of the secondary channel 343 and stops. The first and second rotating arms 526 can be as follows: Figure 27 The lever shown can be horizontally connected or angled. The above is one specific embodiment of the guide pivot 350—a lever. The structure of the guide pivot 350 is not limited to this. For example, in other embodiments, a first rotating arm 526 extends from the pivot end 352 of the guide pivot 350, and a guide 351 is disposed at the end of the first rotating arm 526. The middle point of the first rotating arm 526 is the force-receiving end 353 connecting the wrench locking elastic element 355. This method also enables the wrench locking elastic element 355 to apply a force to the guide 351 through the guide pivot 350 to disengage from the main channel 341 and enter the secondary channel 343, all of which are within the protection scope of this invention.

[0160] The above method involves the wrench locking elastic element 355 being indirectly connected to the guide element 351 via the guide pivot 350. In other embodiments, the wrench locking elastic element 355 can also be directly connected to the guide element 351 to achieve the effect of "the wrench locking elastic element 355 driving the guide element 351 to disengage from the main channel 341 and enter the secondary channel 343". In one embodiment, a "V"-shaped rod can be used as the wrench locking elastic element 355. One end of the V-shaped rod is fixedly connected to the housing 321, and the other end is provided with the aforementioned guide element 351. The "V"-shaped rod is made of rigid material, and the V-shaped bend of the "V"-shaped rod is relatively small. The bending of the guide member 351 provides a force to "detach from the main channel 341 and enter the secondary channel 343," but such a rigid "V"-shaped rod is prone to wear and breakage. In another embodiment, the wrench locking elastic element 355 is made of an elastic material capable of large deformation. The wrench locking elastic element 355 is, for example, a "V" metal spring 522 or a spring, with one end fixedly connected to the housing 321 and the other end provided with the guide member 351. Due to the large elasticity of the locking elastic element, the stability of the guide member 351 connected to it in the channel is poor, and it cannot effectively achieve the function of locking the wrench in the middle position. In summary, the indirect connection between the wrench locking elastic element 355 and the guide member 351 and the application of the force to enter the secondary channel 343 through the guide pivot member 350 used in this embodiment, in addition to the above benefits, also has the following advantages: it is less likely to cause damage or breakage of parts, ensures the stability of the movement of the guide member 351, and further ensures the stability of the wrench locking mechanism. Preferably, in this embodiment, the wrench locking elastic element 355 is a spring.

[0161] The guide pivot 350 also includes a stop end 354 extending from the pivot end 352. Before the wrench moves from the open position to the intermediate position, the stop end 354 remains disengaged from the clamping drive mechanism. Before the wrench moves from the intermediate position to the closed position, the stop end 354 remains in contact with the clamping drive mechanism to prevent the clamping drive mechanism from moving backward.

[0162] Specifically, such as Figure 27As shown, in this embodiment, the guide pivot 350 extends from the pivot end 352 to the third pivot arm 526, and the end of the third pivot arm 526 is the stop end 354, so that the guide 351, the stop end 354 and the force-bearing end 353 all move around the pivot end 352. Initially, when the clamping pliers are not in use, the wrench is in the open position, the guide pivot 350 is located below the clamping drive mechanism, and the stop end 354 is not in contact with the clamping drive mechanism. When the wrench moves forward and the guide 351 moves towards the opening 342 in the main channel 341, the clamping drive mechanism moves forward, and the stop end 354 remains not in contact with it. When the guide 351 enters the passage 343 and moves towards the locking point b, the distance between the stop end 354 and the end of the clamping drive mechanism gradually decreases until it abuts against the end, preventing it from retracting. When the guide 351 exits the passage 343 along the guide wall 345 and returns to the main channel 341, the jaw drive mechanism clamps, and the stop end 354 always remains in contact with the end of the clamping drive mechanism, preventing it from retracting. This ensures that the clamp within the jaw assembly will not retract during clamping, guaranteeing clamping stability. Specifically, as shown... Figure 25-26 As shown, channel 343 extends from the opening 342 of the main channel 341 toward the pivot end 334 away from the wrench. The distances from the starting point a and the ending point to the pivot end 334 of the wrench are both less than the distance from the locking point b to the pivot end 334 of the wrench.

[0163] like Figure 26 As shown, the guide member 351 has a first movement path when the wrench moves forward and a second movement path when the wrench returns to its closed position. The first movement path includes a main channel 341 and a secondary channel 343, and the second path includes the main channel 341 but does not include the secondary channel 343. The above movement paths are the relative movement paths of the guide member 351. The movement path is the path formed by the channels reached during the movement. When the wrench reaches the closed position, the user releases the wrench, and the wrench returns to its open position under the action of the wrench reset mechanism. During this period, no stopping is required. The second movement path shields the secondary channel 343, preventing the guide member 351 from entering the secondary channel 343 and being locked by the locking point b during the reset movement. That is, it prevents the wrench locking mechanism, which plays an important role in the forward movement, from having a reverse effect in the reset movement, thus realizing the complete reset of the wrench in one step.

[0164] Furthermore, such as Figure 29-33DAs shown, to achieve the aforementioned shielding of the slave channel 343, the clamp further includes a path switching member 360 for switching between the first and second movement paths. The path switching member 360 is located within the housing 321 and has two states. In the first state, the path switching member 360 clears the slave channel 343 to allow the guide member 351 to enter or exit the slave channel 343. In the second state, the path switching member 360 blocks the guide member 351 from entering the slave channel 343. The guide member 351 is a column extending radially through the guide channel 340. The guide member 351 includes a first part and a second part connected together. The first part of the guide member 351 is housed in the guide channel 340, and the second part is outside the guide channel 340 and protrudes from the surface of the wrench body 331. When the first part of the guide member 351 moves within the guide channel 340, the second part will correspondingly form an active space with the movement of the first part. When the path switching member 360 blocks the space through which the first part of the guide member 351 enters the channel 343 from the opening 342, it can prevent the guide member 351 from entering the channel 343 without blocking the entire channel 343. When the path switching member 360 blocks the second part of the guide member 351 from entering the active space or the path of the activity, it prevents the first part of the guide member 351 from entering the channel 343, that is, it can also prevent the guide member 351 from entering the channel 343.

[0165] The guide 351 enters and exits the secondary channel 343 from the opening 342 of the main channel 341. The opening 342 includes a starting point 342a and an ending point b. The entrance and exit of the secondary channel 343 is between the starting point 342a and the ending point b. The starting point 342a is close to the starting point a of the main channel 341, and the ending point b is close to the ending point of the main channel 341. In one embodiment, when the wrench moves forward and the guide 351 is located at the starting point 342a of the opening 342 of the main channel 341, the path switching member 360 is in a first state, and the guide 351 enters the secondary channel 343. During the period when the guide 351 moves in the secondary channel 343 to the ending point b of the opening 342, the path switching member 360 is in the first state, so that the guide 351 can smoothly enter and exit the secondary channel 343 when the wrench moves forward. After the wrench reaches the closed position, it performs a reset movement. At least when the guide 351 is located at the ending point b of the opening 342 of the main channel 341, the path switching member 360 is in a second state and maintains the second state at least until the guide 351 moves to the starting point 342a of the opening 342 of the main channel 341, so that the guide 351 can never enter the secondary channel 343 during the reset movement. The state control logic of the path switching component 360 mentioned above needs to be designed based on the structure of the opening 342, in order to ensure the formation of the first and second motion paths mentioned above.

[0166] In this embodiment, as Figures 31A-31D As shown, the path switching component 360 has the following easily implemented state logic: During the period when the wrench moves forward from the open position to the closed position, the path switching component 360 is in the first state, allowing the guide component 351 to smoothly enter and exit the slave channel 343 during forward movement; when the wrench moves forward and reaches the closed position, the path switching component 360 switches from the first state to the second state; after the wrench reaches the closed position, it performs a reset movement and moves from the closed position to the intermediate position, during which the path switching component 360 is in the second state, ensuring that the guide component 351 cannot enter the slave channel 343 during the reset movement starting from the closed position. The state control logic of the path switching component 360 in this embodiment controls the state of the path switching component 360 based on the position of the wrench, achieving the same function with greater stability and a simpler design.

[0167] Furthermore, as the wrench reaches the closed position, it begins its reset movement. When it is in the open position, the path switching element 360 is in the first state. That is, during the wrench's reset movement from the middle position to the open position, the path switching element 360 switches from the second state to the first state. Thus, at the end of one use cycle, the path switching element 360 returns to its initial state, allowing it to function properly in the next use cycle.

[0168] Therefore, during the forward movement of the wrench, the path switching member 360 is in the first state at least when the guide member 351 passes through the opening 342; during the reset movement of the wrench, the path switching member 360 is in the second state at least when the guide member 351 passes through the opening 342.

[0169] Furthermore, to achieve the state switching of the aforementioned path switching component 360, the clamp also includes a path driving component 370, located within the housing 321. The path switching component 360 is disposed in one of the wrench and the main body 320, and the path driving component 370 is disposed in the other. Specifically, the path switching component 360 is disposed in one of the main housing 321 of the wrench and the main body 320, and the path driving component 370 is disposed in the other. When the wrench moves forward or reset, when the path driving component 370 abuts against the path switching component 360, it drives the path switching component 360 to move, thereby switching the path switching component 360 between a first state and a second state. The movement of the wrench drives the path driving component 370, which in turn drives the path switching component 360 to change its state, finally returning to changing the movement path of the wrench's own guide channel 340. The movement of the wrench is the power source for the switching of the wrench's movement path, realizing an internal loop that is simple and reliable, requiring no additional power source to change the movement path.

[0170] When the wrench moves forward or reset, the path drive member 370 can selectively abut or disengage from the path switch member 360. When disengaged, ideally the path switch member 360 does not move and remains in a fixed position, and its state remains unchanged. When abutted, the path switch member 360 moves and its position changes, and its state may change. In another embodiment, the path switch member 360 can continuously abut and move with the path drive member 370. When it moves to a certain position, a switch between the first state and the second state occurs.

[0171] Specifically, in this embodiment, as Figure 29 As shown, the path switching component 360 includes a pivot portion 361, a trigger portion, and an execution portion 363. The path switching component 360 rotates about the pivot portion 361 as an axis. The trigger portion includes a first trigger portion 362a and a second trigger portion 362b respectively disposed on both sides of the pivot portion 361. The path driving component 370 is a guide rib, which includes a first guide rib 371 and a second guide rib 373. The first guide rib 371 has a first guide slope 372, and the second guide rib 373 has a second guide slope 374. The first guide rib 371 is located in front of the first trigger portion 362a, and the second guide rib 373 is located behind the second trigger portion 362b. The first trigger portion 362a... When 2a abuts against the first guide rib 371 and moves along the first guide ramp 372, the path switching member 360 rotates in the first direction, and the path switching member 360 switches from the first state to the second state; when the second trigger part 362b abuts against the second guide rib 373 and moves along the second guide ramp 374, the path switching member 360 rotates in the second direction, and the path switching member 360 switches from the first state to the second state; when the path switching member 360 is in the first state, the execution part 363 clears the passage 343 to allow the guide member 351 to enter or exit the passage 343; when the path switching member 360 is in the second state, the execution part 363 blocks the guide member 351 from entering the passage 343.

[0172] During the forward movement of the wrench, the path switching component 360 and the path driving component 370 move relative to each other. The aforementioned front side and rear side refer to the fact that when the wrench moves forward, the first guide rib 371 is located on the front side of the path switching component 360 relative to the path driving component 370 in the direction of relative movement, and the second guide rib 373 is located on the rear side of the path switching component 360 relative to the path driving component 370 in the direction of relative movement.

[0173] like Figure 29As shown, in this embodiment, the pivot 361 is a rotating shaft fixed in the horizontal second pin hole 404 of the wrench main component. The first trigger part 362a and the second trigger part 362b are two plates extending from the rotating shaft, namely the first plate 362a' and the second plate 362b', which are obtuse angles. The execution part 363 is a rib connecting the first plate 362a'. The pivot 361 of the path switching component 360 is connected to the wrench, especially on the wrench body 331 near the channel 343. The obtuse angles of the first plate 362a' and the second plate 362b' face the inside of the main housing 321. The guide rib is provided on the inside of the main housing 321, and the slope 498 of the first guide slope 372 and the second guide slope 374 faces the wrench body 331. In other embodiments, the first plate 362a' and the first plate 362a' may be acute or right angles.

[0174] The aforementioned front and rear arrangements of the path switching element 360 and the path driving element 370 allow the path switching element 360 to selectively engage or disengage from the path driving element 370 during the forward or reset movement of the wrench. The wrench's position also includes a first adjacent position between the intermediate and closed positions, immediately adjacent to the closed position, and a second adjacent position between the open and intermediate positions, immediately adjacent to the open position. Specifically, as shown... Figures 33A-33DThe movement process of the path switching component 360 and the path driving component 370 is as follows: Initially, the wrench is in the open position, and the pivot portion 361 of the path switching component 360 relative to itself is in the first position, in the first state, and disengaged from the first guide rib 371; during the period before the wrench moves forward from the open position to the first adjacent position, the path switching component 360 moves around the pivot end 334 of the wrench along with the wrench, and the first trigger portion 362a gradually approaches the first guide rib 371. The pivot portion 361 of the path switching component 360 relative to itself does not move in the first direction or the second direction, and remains in the first position and in the first state; the wrench moves forward... When the wrench moves forward and reaches the first adjacent position, the path switching member 360 begins to abut against the first guide slope 372 of the first guide rib 371. The path switching member 360 remains in the first position and in the first state. The wrench continues to move forward. During the period before moving from the first adjacent position to the closed position, the first trigger part 362a of the path switching member 360 moves along the first guide slope 372. The path switching member 360 rotates rapidly in the first direction, disengaging from the first position, but still remains in the first state. When the wrench reaches the closed position, the path switching member 360 has rotated a total of angle A in the first direction from the first position. The pivot portion 361 relative to itself is in the second position, and the path switching member 360 switches from the first state to the second state; during the wrench reset movement and from the closed position to the second adjacent position, the path switching member 360 moves around the pivot end 334 of the wrench along with the wrench, the second trigger portion 362b gradually approaches the second guide rib 373, and is also disengaged from the first guide rib 371. The path switching member 360 does not move in the first direction or the second direction relative to its own pivot portion 361, and remains in the second position and the second state; when the wrench resets and reaches the second adjacent position, the path switching member 360 begins to abut against the second guide rib 373. The path switching member 360 remains in the second position and second state on the second guide ramp 374 of the rib 373. The wrench continues its reset movement. During the period before moving from the second adjacent position to the open position, the second trigger part 362b of the path switching member 360 moves along the second guide ramp 374, and the path switching member 360 rotates rapidly in the second direction, disengaging from the second position, but still remaining in the second state. When the wrench reaches the open position, the path switching member 360 has rotated a total angle A in the second direction from the second position, returning to the first position, and switching from the second state to the first state. The relatively short length of the first guide rib 371 and the second guide rib 373 enables faster rotation by angle A and faster switching between the first and second states. The structure is simple and low-cost. Furthermore, when the path switching member 360 is disengaged from the path drive member 370, it maintains a stable position and state, resulting in a more stable clamping state.

[0175] In other embodiments, unlike this embodiment, the wrench position also includes a third adjacent position and a fourth adjacent position located between the open position and the intermediate position. The fourth adjacent position is closer to the open position. Before the wrench reset movement reaches the third adjacent position, the second trigger part 362b is disengaged from the second guide rib 373. The specific position, movement, and state of the path switching member 360 are the same as above and will not be repeated. During the movement of the wrench from the third adjacent position to the fourth adjacent position, the second trigger part 362b abuts against the second guide rib 373 and rotates in the second direction along the second guide slope 374. When in the fourth adjacent position, the path switching member 360 returns to the first position and the first state, as described above. During the subsequent movement of the wrench from the fourth adjacent position to the open position, the second guide rib 373 is disengaged from the path switching member 360, and the path switching member 360 remains in the first position and the second state. In this way, the path switching member 360 can also be restored to its initial state so that it can function normally in the next use cycle of the continuously applied clamp.

[0176] In this embodiment, the clamp also includes a positioning mechanism, such as... Figure 32 The positioning mechanism includes a first positioning element 381 and a second positioning element 382. The first positioning element 381 is disposed on the pivot portion 361 of the path switching element 360. When the path switching element 360 moves about the pivot portion 361 as the axis of rotation in a first direction or a second direction, the first positioning element 381 moves synchronously about the pivot portion 361 as the axis of rotation. The second positioning element 382 includes a first recess 383 and a second recess 384 disposed on the wrench, and a protrusion 385 located between the first recess 383 and the second recess 384. One of the first positioning element 381 and the protrusion 385 is an elastic element. When the first positioning element 381 is located in the first recess 383, the path switching element 360 is in a first state; when the second positioning element 382 is located in the second recess 384, the path switching element 360 is in a second state. With such a positioning mechanism, the first positioning member 381 can only be fixed in the first recess 383 or the second recess 384 and cannot be located in other positions. This means that the pivot part 361 of the path switching member 360 relative to itself can only be located in two fixed positions, such as the first position and the second position mentioned above. In the first position, the path switching member 360 is in the first state, and in the second position, the path switching member 360 is in the second state.

[0177] The first positioning element 381 is located in the first recess 383. When the user operates the wrench to rotate the path switching element 360 in the first direction, the first positioning element 381 also rotates in the first direction, and the first positioning element 381 abuts against the protrusion 385. Since one of them is an elastic element, it can be compressed, and the first positioning element 381 can smoothly pass over the protrusion 385 and enter the second recess 384. Assuming that the user stops operating the wrench while passing over the protrusion 385, the first positioning element 381 can also return to the first recess 383 under the reaction force of the elastic element. Similarly, the first positioning element 381 can smoothly pass over the protrusion 385 from the second recess 384 and enter the first recess 383, which will not be described in detail.

[0178] Based on the above, the path switching component 360 and the path driving component 370 can be disengaged. Without the aforementioned positioning mechanism, the path switching component 360 would move freely relative to its pivot portion 361. When the clamp is vibrated or shaken, the path driving component 370 would freely rotate in either the first or second direction, thus accidentally entering the second state when the first state is required, or accidentally entering the first state when the second state is required. This disrupts the first movement path of the clamp's forward movement and the second movement path of its reset movement, rendering it unusable. Therefore, the aforementioned positioning mechanism prevents the path switching component 360 from moving unexpectedly, ensuring the normal movement path of the clamp.

[0179] The first positioning element 381 can be a first rib, protruding from the pivot portion 361 away from the aforementioned obtuse angle, and the protrusion 385 can be a second rib. In other embodiments, the elastic element can also be a C-shaped protruding metal rod with elasticity.

[0180] In this embodiment, the jaw assembly has a design that can stably guide, clamp, and compress the first clamp, as detailed below.

[0181] The jaw assembly includes a first jaw arm and a second jaw arm. The structure of the first jaw arm is the same as that of the second jaw arm; this invention focuses on describing the structure of the first jaw arm. Figure 34As shown, the first clamp arm includes a bottom, a first side portion, and a second side portion, which together make the cross-section of the first clamp arm approximately U-shaped. The first side portion includes a first guide portion and a first receiving portion, both disposed on the inner wall of the first side portion. The second side portion includes a second guide portion and a second receiving portion, both disposed on the inner wall of the second side portion. The bottom is located between the first and second guide portions, and a notch is formed between the first and second receiving portions. The first and second guide portions have the same structure, and the first and second receiving portions have the same structure; this invention focuses on describing the structure of the first guide portion and the first receiving portion. The first guide portion includes a guide surface, at least a second portion of which is approximately arc-shaped. The guide surface includes a first portion flush with the upper surface of the bottom, and a second portion higher than the upper surface of the bottom, formed by extending the first portion in a generally arc-shaped direction, with a smooth transition between the first and second portions. The first receiving portion is located distal to the first guide portion and is recessed. The first receiving portion includes a proximal side and a distal side, the proximal side intersecting with a second portion of the guide surface, and the intersection forming a rounded corner. The intersection is the distal end of the second portion.

[0182] The jaw assembly also includes four stops. These stops are located on the first and second jaw arms and respectively mate with the first and second guide portions of the first jaw arm and the two guide portions of the second jaw arm. The four stops have identical structures; their structure will be explained using the first stop mates with the first guide portion as an example. Figures 34-38 As shown, the first stop is located above the first guide portion. The first stop includes a base and a movable portion. The movable portion includes an end portion and a middle portion, with the middle portion located between the end portion and the base. The base is larger than the middle portion and the end portion, and the base engages in a groove provided on the first side portion, thereby fixing the base to the first side portion. The middle portion and the end portion are both located on the inner side of the inner wall of the first side portion. The movable portion can move in the up and down directions. Thus, the first guide portion and the first stop together form the guide space of the clamp. With the same structure, the first clamp arm and the second clamp arm also have three guide spaces. The first clamp arm and the second clamp arm have a total of four guide spaces, which correspond one-to-one with the four protrusions of the clamp. In the initial state, the first stop does not engage with the protrusions of the clamp, and the distance between the second part of the guide surface and the first stop decreases in the direction towards the far end of the guide surface. The above distance reaches its minimum at the intersection with the first stop. The aforementioned distance can be determined, for example, by using the minimum distance between a point on the second part and the lower surface of the first stop, wherein the minimum distance decreases in the direction toward the far end of the guide surface.

[0183] The stop is elastic, in two ways. In one embodiment, the stop is made of an elastic material, including but not limited to metal, causing it to tend to maintain its original position. In another embodiment, at least a portion of the stop is connected to the clamp arm, which is further provided with a torsion spring. One end of the torsion spring is connected to the clamp arm, and the other end is connected to the stop, causing the stop to tend to approach the guide surface. The elasticity of the stop constrains the protrusion of the clamp within the guide space, thereby keeping the clamp within the guide space as it moves further away, thus allowing the clamp to gradually open. Based on the elasticity of the stop member, the stop member includes a base and a movable part. The movable part can move up and down, including two methods: In one method shown in this embodiment, the base is connected to the clamp arm, and the movable part can move up and down due to the elasticity of the stop member's material; In another method shown in other embodiments, the base is pivotally connected to the clamp arm, and the movable part can also pivot accordingly, thus moving up and down. One end of the torsion spring is connected to the clamp arm, and the other end is connected to the movable part, causing the movable part to tend to move towards the guide surface. The movable part's ability to move up and down allows space for the protrusion to smoothly leave the guide space and enter the receiving part.

[0184] The maximum size of the first protrusion 36 is approximately the same as the maximum size of the second protrusion 37. The shape of the first protrusion 36 and the shape of the second protrusion 37 can be the same or different. Therefore, the first protrusion 36 and the second protrusion 37 can be used in essentially the same guide space. It should be noted that the size of the first protrusion 36 can also be set differently from that of the second protrusion 37, and even the sizes of the two first protrusions 36 and the two second protrusions 37 can be set differently. In this case, the guide space that mates with the protrusions can be appropriately changed, that is, the relative position, shape and / or size of the guide and the stop can be appropriately changed.

[0185] With the jaw assembly open (fully open), the clamp is propelled from the clamp box 220 into the jaw assembly by the clamping drive mechanism. The first and second protrusions of the clamp enter their respective guide spaces and move further away within those spaces until the clamp is located at the far end of the jaw assembly. At least a portion of the first and second protrusions then enter and are housed in the receiving portion. Both protrusions are guided by the guide portion and move along the guide surface under the constraint of the stop, causing the clamp to move in the desired direction. Before being fed into the jaw assembly, the clamp is partially compressed and stored in the clamp box 220 due to its size and internal space. At this time, the clamp is not fully open. The compression over a period of time requires external force to restore the clamp to its original shape (open shape) after it is released from the sleeve 210. Compression means that the two clamping arms of the clamp are close to each other but not locked together. Since the clamps remain compressed for a period of time after assembly into the clamp box 220 until use, they tend to retain their compressed shape. Both the first and second protrusions are constrained by the stops, which overcome this tendency to maintain their compressed shape as they move further outward within the guide space. This causes the first and second clamping arms of the clamp to gradually open as they move further outward, until they return to their original shape or maintain an angle consistent with the jaw assembly. The clamps returning to their original shape, or maintaining an angle consistent with the jaw assembly, maximizes the clamping space between the two clamping arms, facilitating the containment of the tissue to be clamped. In the initial state, the protrusions of the clamps are not in the guide space and are not constrained by the stops. At this time, the distance between the second part of the guide surface and the corresponding stop decreases towards the far end of the guide surface until the distance between the far end of the second part (i.e., the far end of the guide surface) and the stop reaches its minimum. As the aforementioned distance decreases towards the far end of the guide surface, the first and second protrusions of the clamp gradually approach the exit (i.e., the meeting point) of the guide space and the entrance of the receiving part as they move towards the far end of the guide surface, thus enabling the first and second protrusions to smoothly enter the receiving part. This decrease in distance towards the far end of the guide surface is achieved, for example, by making at least the second portion of the guide surface approximately arc-shaped. As the first and second protrusions move further away within the guide space, the constraint forces they experience increase, causing the protrusions of the clamp to be guided by the second portion of the guide surface while simultaneously being more constrained by the stop, suppressing the movement speed of the protrusions and preventing them from exceeding the entrance of the receiving part due to excessive speed after leaving the guide space, thus preventing them from entering the receiving part.Furthermore, after the first and second protrusions reach and pass the intersection (i.e., the intersection formed by the near side of the receiving portion and the second part of the guide surface), they will not continue to move in their original direction and thus will not enter the receiving portion under the constraint of the stop. After the first and second protrusions pass the intersection and enter the receiving portion, the clamp moves into position and is in the aforementioned ready position, completing the clamping. Since the movable part of the stop can move up and down, when the distance between the second part of the guide surface and the corresponding stop decreases in the direction towards the far end of the guide surface, while the stop constrains the protrusion of the clamp, the movable part of the stop can make room for the protrusion of the clamp by movement, allowing it to leave the guide space and enter the receiving portion while being constrained. The constraint of the protrusion by the stop can be achieved, for example, by the stop abutting against the protrusion. At least a portion of the first protrusion and at least a portion of the second protrusion are respectively received in the receiving portion, so that the clamp maintains a stable position during the jaw closing process, i.e., during the clamping process. Furthermore, the receiving portion is recessed, which helps to keep the first and second protrusions of the clamp within the receiving portion and prevent them from easily disengaging. Furthermore, both the first and second protrusions, received within the receiving portion, are subjected to a force applied by a stop member abutting against them, making the first and second protrusions more stably held within the receiving portion. This force can be, for example, a generally downward and upward force, or a generally distal force, depending on the location of the stop member abutting against the protrusion. The stable position of the first and second protrusions ensures that the clamp remains stable during jaw closure, guaranteeing the clamping effect. It should be noted that the invention also includes a clamping anti-retraction mechanism to prevent the clamping drive mechanism from retracting, thereby preventing the clamp from retracting. The receiving portion and the stop member function to keep the clamp stable at the distal end of the jaw assembly, facilitating smooth clamping.

[0186] Subsequently, the jaw assembly enters the closing process, with the first and second jaw arms approaching each other until they reach the end of their closed stroke, at which point the jaw assembly completes its closure. During the jaw assembly closure process, if the first and / or second protrusions are not accommodated in the receiving portion, the jaw arms will be unable to apply force to at least one protrusion through the receiving portion, causing the clamps to twist or disengage from their correct position, preventing the two jaw arms from engaging and resulting in clamping failure. At least a portion of the first and second protrusions are accommodated in the receiving portion. Therefore, during the jaw assembly closure process, the first jaw arm drives the first clamp arm, and the second jaw arm drives the second clamp arm to rotate around the connecting portion, causing the first and second clamp arms to approach each other. Finally, the first engaging portion of the first clamp arm engages with the second engaging portion of the second clamp arm, fixing the first and second clamp arms together. During the jaw assembly closure process, the clamps maintain a stable position, preventing undesirable movement or twisting of the clamps, which could lead to engagement and clamping failure. After the protrusions are received in the receiving portion, both first protrusions are further abutted by stop members, and both second protrusions are also abutted by stop members, further ensuring that the protrusions are received in the receiving portion and will not detach from the receiving portion.

[0187] In another embodiment, the structure of the first clamp arm is different from that of the second clamp arm. The structure of the first clamp arm is the same as in the previous embodiment. The difference between the second clamp arm and the first clamp arm is that the first part of the guide surface of the first guide portion of the second clamp arm includes a stroke extension structure, and the first part of the guide surface of the second guide portion of the second clamp arm also includes a stroke extension structure. Preferably, the stroke extension structure is a recess. The stroke extension structure makes the stroke of the first clamp arm of the clamp longer, so that the distance the second clamp arm moves towards the distance in the same amount of time is greater than the distance the first clamp arm moves towards the distance, thereby making the clamp move along... Figure 49 The counter-clockwise rotation of the clamp aligns the first and second protrusions on the same vertical line, changing the state where they were not aligned when compressed. This prevents uneven force distribution during movement and avoids impact on the first protrusion of the first clamping arm before it enters the receiving portion. It should be noted that when the asymmetrical clamp is compressed in the clamp box 220, due to the difference in curvature between the two clamping arms, the first protrusion of the first clamping arm is located further away from the second protrusion of the second clamping arm. In this embodiment, the portion of the first guide surface of the first guide portion and the second guide portion of the second clamping arm, excluding the stroke extension structure, can be flush with the upper surface of the bottom.

[0188] The clamp also includes a first elastic element. For example... Figure 35As shown, both the first and second clamp arms include receiving grooves, which are through grooves used to accommodate the clamping drive mechanism when the jaw assembly is closed. Specifically, the clamping block 231 and part of the elastic push rod 232 of the clamping drive mechanism are included to prevent interference between the first and second clamp arms and the clamping drive mechanism when the jaw assembly is closed. The proximal end of the first clamp arm has a protrusion, and the clamp box 220 has a hole in which the protrusion is accommodated, allowing the proximal end of the first clamp arm to be pivotally connected to the distal end of the clamp box 220, and the proximal end of the second clamp arm to be pivotally connected to the distal end of the clamp box 220. One end of a first elastic element is connected to the proximal end of the first clamp arm, and the other end is connected to the proximal end of the second clamp arm. The elastic force of the first elastic element causes the proximal ends of the first and second clamp arms to move away from each other, thereby keeping the first and second clamp arms in an open state (the jaw assembly is fully open). The proximal ends of both the first and second clamp arms are located within the sleeve 210, as shown... Figure 34 As shown, the distal end of the sleeve 210 engages with the lower surface of the first clamp arm and the upper surface of the second clamp arm. The sleeve 210 is driven to move by the jaw drive mechanism, and the distal end of the sleeve 210 moves accordingly. As the distal end of the sleeve 210 moves further away, it engages with the lower surface of the first clamp arm and the upper surface of the second clamp arm, driving the first and second clamp arms to pivot and bring them closer together, thus closing the jaw assembly. After the jaw assembly closes, the first elastic element is compressed and stores energy. As the sleeve 210 moves closer, the distal end of the sleeve 210 also moves closer, releasing the energy stored in the compressed first elastic element. The elastic force of the first elastic element causes the proximal ends of the first and second clamp arms to move away from each other, thereby opening the first and second clamp arms. Using the first elastic element to open the jaw assembly avoids the need for a complex mechanism to achieve the above function. Preferably, the first elastic element is a U-shaped spring. When compressed, the two arms of the U-shaped spring move closer together to store energy. The U-shaped spring occupies less space and has a greater elastic force than a regular spring. The meaning of "opening" mentioned above is the same as "unlocking".

[0189] It should be noted that "distant" can refer to a general direction towards the distance, including the longitudinal direction and the direction at a certain angle to the longitudinal direction.

[0190] Combination Figures 43 to 45 This is the second embodiment of the present invention. Similar to the first embodiment, this embodiment relates to a clamping clamp.

[0191] Compared to the first embodiment, this embodiment differs in that the driving member selectively drives either the clamping drive mechanism or the pushing drive mechanism under the action of the actuator 330. In the first state, the driving member separates from the pushing drive mechanism and engages with the clamping drive mechanism to drive its movement. In the third state, the driving member separates from the clamping drive mechanism and engages with the pushing drive mechanism to drive its movement. In this embodiment, when the driving member drives the clamping drive mechanism, the pushing drive mechanism does not retract to store energy but remains stationary at its initial position without any movement. This effectively ensures that the clamping action and the pushing action are asynchronous and do not interfere with each other. Compared to the first embodiment, while effectively ensuring the safety and reliability of the clamping clamp, the overall structure of the clamping clamp is simpler.

[0192] The jaw drive mechanism is sleeved on the clamp feeding drive mechanism and the clamp pushing drive mechanism to drive the jaw assembly to close. In the third state described above, the drive component engages simultaneously with the jaw drive mechanism and the clamp pushing drive mechanism to drive them to move synchronously. In this embodiment, since the jaw drive mechanism and the clamp pushing drive mechanism move synchronously, the transmission mechanism does not have a second state compared to the first embodiment. The clamping drive mechanism includes a clamping drive tube 402 and a clamping assembly connected to the clamping drive tube 402. The clamping drive tube 402 drives the clamping assembly to move, thereby driving the clamp into the jaw assembly. The specific structure is the same as described above. The jaw drive mechanism includes a jaw drive tube 432 and a sleeve 210 connected to the jaw drive tube 432. The specific structure is the same as described above. The push clamp drive mechanism includes a push clamp drive tube 459 and a push clamp drive member connected to the push clamp drive tube 459. The push clamp drive member has multiple side cavities 252 spaced apart along the longitudinal direction. Each side cavity 252 corresponds to a push clamp block 253. The push clamp drive member drives the push clamp block 253 to move. In this embodiment, the push clamp drive member is a push clamp rod 251. The specific structure of the push clamp rod 251 is the same as described above. The structure of the drive member is the same as the structure of the switching mechanism described above or later, and will not be described in detail here. To make the overall structure more compact, the push clamp drive tube 459 is sleeved on the feed clamp drive tube 402. The push clamp drive tube 459 and the feed clamp drive tube 402 are coaxial. The feed clamp assembly and the push clamp drive are located on both sides of the clamp box 220. Specifically, the feed clamp assembly is located on the outside of the clamp box 220, and the push clamp drive is located on the inside of the clamp box 220. To achieve simultaneous engagement of the driving component with the jaw drive mechanism and the push-clamp drive mechanism, the proximal end of the push-clamp drive tube 459 is flush with the proximal end of the jaw drive tube 432. The distal end face 508 of the driving component engages with the proximal end faces 502 of both components to drive their synchronous movement. Of course, it is understandable that the proximal end of the push-clamp drive tube 459 and the proximal end of the jaw drive tube 432 may not be flush. In this case, it is sufficient to ensure that the distance from the distal end face 508 of the driving component that abuts against the push-clamp drive tube 459 to the push-clamp drive tube 459 is equal to the distance from the distal end face 508 of the driving component that abuts against the jaw drive tube 432 to the jaw drive tube 432.

[0193] Of course, in another embodiment, in the third state, the driving member first drives the push-clamp driving mechanism to move until it engages with the jaw driving mechanism, and then drives the jaw driving mechanism and the push-clamp driving mechanism to move synchronously. The jaw driving mechanism is sleeved on the clamping driving mechanism and the push-clamp driving mechanism. In the initial state, the distance from the proximal end of the push-clamp driving tube 459 to the distal end of the driving member is less than the distance from the proximal end of the jaw driving tube 432 to the distal end of the driving member. Thus, during the movement of the driving member, it first engages with the push-clamp driving tube 459, pushes the push-clamp driving tube 459 to move until it engages with the jaw driving tube 432, and then pushes the jaw driving tube 432 and the push-clamp driving tube 459 to move together. Similarly, in order to make the overall structure more compact, the push-clamp driving tube 459 is sleeved on the clamping driving tube 402.

[0194] The jaw drive mechanism also includes a second reset element 446, such as an elastic element. The elastic element is sleeved outside the jaw drive tube 432, with one end abutting against a baffle 434 on the outer surface of the jaw drive tube 432, and the other end extending forward to abut against the inner wall of the clamp housing 321. The elastic element stores energy when the jaw drive mechanism advances, and releases this energy upon restoring its deformation, thereby providing power for the jaw drive mechanism to reset. The push-clamp drive mechanism also includes a third reset element 456, such as an elastic element. One end of the elastic element abuts against the inner wall of the clamp housing 321, and the other end extends rearward to abut against the distal end face 508 of the push-clamp drive tube 459. The elastic element stores energy when the push-clamp drive mechanism advances, and releases this energy upon restoring its deformation, thereby providing power for the push-clamp drive mechanism to reset. The feed-clamp drive mechanism also includes a first reset element 418, such as an elastic element. One end of the elastic element abuts against the rib 436 on the inner wall of the push-clamp drive tube 459, and the other end extends backward to abut against the distal end face 508 of the feed-clamp drive tube 402. The elastic element is used to store energy when the feed-clamp drive mechanism moves forward. The elastic element restores its deformation and releases the energy, thereby providing power for the reset of the feed-clamp drive mechanism.

[0195] The following details the working process of the clamping pliers in the third state, where the driving component simultaneously engages with the jaw drive mechanism and the push-clamp drive mechanism, taking the synchronous movement of the jaw drive mechanism and the push-clamp drive mechanism as an example.

[0196] The operator presses the actuator 330, causing it to move from the open position to the middle position. Under the action of the actuator 330, the drive unit drives the clamping drive mechanism forward. The proximal end of the clamping drive tube 402 and the distal end of the drive unit gradually approach the proximal end of the jaw drive tube 432 and the push-clamp drive tube 459. When the actuator 330 moves to the middle position, the guide of the drive unit runs onto the second guide surface 496 inside the housing 321. The locking block 482 disengages from the slot of the clamping drive tube 402, the drive unit separates from the clamping drive mechanism, the forward stroke of the clamping drive mechanism ends, and the clamp located at the farthest end of the clamp box 220 is fed into the jaw assembly (clamping action completed). The distal end surface 508 of the drive unit abuts against the proximal end surface 502 of the jaw drive tube 432 and the proximal end surface 502 of the push-clamp drive tube 459. The anti-retraction end 354 of the clamping anti-retraction mechanism can abut against the clamping drive tube 402 after the switching mechanism and the clamping drive mechanism are separated to prevent the clamps in the jaw assembly from retracting due to the retraction of the clamping drive mechanism. Continuing to press the actuator 330, the actuator 330 moves from the middle position towards the closed position, and the clamping anti-retraction mechanism gradually disengages from the clamping drive tube 402. Under the action of the actuator 330, the drive member pushes the jaw drive mechanism and the push clamp drive mechanism forward. The jaw drive tube 432 drives the sleeve 210 forward to close the jaw assembly, and the push clamp drive mechanism moves forward to move the remaining clamps in the clamp box 220 forward one position. When the actuator 330 moves to the closed position, the jaw assembly closes (jaw closure action completed), and the remaining clamps in the clamp box 220 all move forward one position (push clamp action completed). The clamping anti-retraction mechanism completely disengages from the clamping drive tube 402, and the clamping drive tube 402 is reset under the action of the first reset member 418. When the actuator 330 is released, the jaw drive mechanism resets under the action of the second reset member 446, and the push-clamp drive mechanism resets under the action of the third reset member 456. That is to say, in this working process, the switching mechanism first separates from the jaw drive mechanism and the push-clamp drive mechanism, and engages with the clamp feeding drive mechanism to drive the clamp feeding drive mechanism to move; then it separates from the clamp feeding drive mechanism, and simultaneously engages with the jaw drive mechanism and the push-clamp drive mechanism to drive the jaw drive mechanism and the push-clamp drive mechanism to move synchronously.

[0197] The following details the working process of the clamping pliers in this invention, in which one actuator 330 drives three driving mechanisms.

[0198] The switching mechanism is connected to the clamp feeding drive mechanism, the jaw drive mechanism, and the push clamp drive mechanism respectively; the switching mechanism abuts against the actuator 330 to receive power; under the action of the actuator 330, the switching mechanism drives the clamp feeding drive mechanism to perform clamp feeding action, drives the jaw drive mechanism to perform jaw closing action, and drives the push clamp drive mechanism to perform push clamp action in a preset sequence; there is one actuator 330.

[0199] The advantage of this design is that the surgeon operates a single actuator 330, which in turn acts on a switching mechanism, which in turn affects three different drive mechanisms—the clamp delivery drive mechanism, the jaw drive mechanism, and the clamp push drive mechanism—allowing these three different drive mechanisms to complete their respective actions in a preset sequence. In other words, the surgeon can complete the clamp delivery, jaw closure, and clamp push actions with a single actuator 330, and these three actions adhere to the preset sequence without interfering with each other. This ensures the safety and smoothness of the surgeon's operation, and is also simple and user-friendly.

[0200] According to the working method of the clamp, the jaw closing action, the clamp feeding action, and the clamp pushing action cannot be performed simultaneously. In this embodiment, the three actions follow a preset order in which the clamp feeding action is executed before the jaw closing action and the clamp pushing action. That is to say, the clamp feeding action is executed first, and the jaw closing action and the clamp pushing action are executed later. The order of the three actions can be as follows: in the first embodiment, the clamp feeding action is executed first, then the jaw closing action is executed, and then the clamp pushing action is executed; or in the second embodiment, the clamp feeding action is executed first, then the jaw closing action and the clamp pushing action are executed. In this case, the jaw closing action and the clamp pushing action can be performed simultaneously, or the clamp pushing action can be performed first and then the jaw closing action and the clamp pushing action can be performed simultaneously. Specifically, as described in the first embodiment above, the push-clamp drive mechanism is connected to the switching mechanism via a mating mechanism, and the push-clamp drive mechanism and the switching mechanism move in opposite directions. When the actuator 330 is pressed, the switching mechanism, under the action of the actuator 330, first separates from the jaw drive mechanism and engages with the clamp delivery drive mechanism to drive the clamp delivery drive mechanism forward to perform a clamp delivery action. Then, it separates from the clamp delivery drive mechanism and engages with the jaw drive mechanism to drive the jaw drive mechanism forward to perform a jaw closing action. While the switching mechanism drives the clamp delivery drive mechanism and the jaw drive mechanism forward, it simultaneously drives the mating mechanism to move, thereby driving the push-clamp drive mechanism backward and storing energy. The push-clamp drive mechanism includes a third reset member 456 for storing this energy. When the actuator 330 is released, the push-clamp drive mechanism, under the action of the third reset member 456, moves forward to perform a push-clamp action. The structure, positional relationships, connection relationships, and motion relationships of the switching mechanism, clamp delivery drive mechanism, jaw drive mechanism, and push-clamp drive mechanism are the same as in the first embodiment and will not be repeated here.

[0201] As described in the second embodiment above, under the action of the actuator 330, the switching mechanism first separates from the jaw drive mechanism and the push-clamp drive mechanism, and then engages with the clamp feeding drive mechanism to drive the clamp feeding drive mechanism to move. Afterward, it separates from the clamp feeding drive mechanism and simultaneously engages with the jaw drive mechanism and the push-clamp drive mechanism to drive the jaw drive mechanism and the push-clamp drive mechanism to move synchronously. Alternatively, the switching mechanism first separates from the jaw drive mechanism and the push-clamp drive mechanism, and then engages with the clamp feeding drive mechanism to drive the clamp feeding drive mechanism to move. Afterward, it separates from the clamp feeding drive mechanism and engages with the push-clamp drive mechanism to drive the push-clamp drive mechanism to move until it engages with the jaw drive mechanism, thereby driving the jaw drive mechanism and the push-clamp drive mechanism to move synchronously. The structure, positional relationship, connection relationship, and motion relationship of the switching mechanism, the clamp feeding drive mechanism, the jaw drive mechanism, and the push-clamp drive mechanism are the same as in the third embodiment, and will not be repeated here.

[0202] In addition, the structure of the actuator 330 is the same as described above, and will not be repeated here.

[0203] Combination Figures 46 to 50 This is the third embodiment of the present invention. Similar to the previous embodiments, this embodiment relates to a clamping clamp.

[0204] The difference between this embodiment and the aforementioned embodiments lies in the structure of the first clutch mechanism of the switching mechanism. In this embodiment, the height difference between different parts of the guide rail forces the first clutch to flip and engage different drive mechanisms, thereby achieving switching between different clamping actions and jaw closing actions. The first clutch includes a pivot block 514. The clutch switching mechanism is the same as described above. A first groove 524 is provided at the proximal end of the clamping drive mechanism. The pivot block 514 cooperates with the first groove 524 to engage the first clutch with the clamping drive mechanism. The second clutch is the distal end surface 508 of the switching mechanism body. The pivot block 514 is pivotally mounted on the body of the switching mechanism. The pivot block 514 includes a block-shaped body 516, a first engaging recess 518 located at the lower end of the block-shaped body 516, and a first rotating shaft 520 located at the rear end of the block-shaped body 516. The pivot block 514 is pivotally connected to the switching mechanism body 500 through the first rotating shaft 520. The upper end of the pivot block 514 is provided with a hole 404 for mounting a guide post 490. The pivot block 514 slides in cooperation with the guide rail inside the housing 321 through the guide post 490. The first clutch also includes a spring piece 522 disposed above the first guide surface 494. The spring piece 522 exerts a downward force on the guide post 490, so that the first clutch can better engage with the clamping drive mechanism. In the initial state, the first engaging notch 518 of the pivot block 514 remains engaged with the first groove 524 of the clamping drive mechanism. The actuator 330 drives the switching mechanism forward, and the pivot block 514 moves forward accordingly, driving the clamping drive mechanism to move to the distal end to perform the clamping action. When the guide post 490 moves along the inclined surface 498 to the second guide surface 496, the pivot block 514 flips upward around the first rotating shaft 520 to lift the first engaging notch 518, thereby disengaging it from the first groove 524, that is, separating it from the clamping drive tube 402. At this time, the distal end surface 508 of the switching mechanism body engages with the proximal end of the jaw drive mechanism, thereby driving the jaw drive mechanism to move to perform the jaw closing action. Of course, it is easy to think that the angle of the pivot block 514 can also be adjusted so that when the first engagement notch 518 of the pivot block 514 separates from the first groove 524 on the feeding drive tube 402, the first engagement notch 518 engages with the proximal end of the jaw drive mechanism, thereby driving the jaw drive mechanism to move.

[0205] Combination Figures 51 to 54 This is the fourth embodiment of the present invention. Similar to the previous embodiments, this embodiment relates to a clamping clamp.

[0206] The difference between this embodiment and the aforementioned embodiments lies in the structure of the switching mechanism. In this embodiment, the switching mechanism does not include moving parts and moving guides. The switching mechanism includes a rotating arm 526 pivotally mounted on the switching mechanism body 500. The rotating arm 526 includes a rotating arm body 528, a second engaging notch 530 located at the lower end of the rotating arm body 528, and a second rotating shaft located at the rear end of the block-shaped body 516. The rotating arm 526 is pivotally connected to the switching mechanism body 500 through the second rotating shaft. The switching mechanism body 500 is sleeved on the clamping drive mechanism. In the initial state, the second engaging notch 530 of the rotating arm 526 engages with the second groove 534 of the clamping drive mechanism. The actuator 330 drives the switching mechanism forward to move the clamping drive mechanism to the distal end for clamping action. When the rotating arm 526 moves to the proximal end of the jaw drive mechanism, it continues to drive the switching mechanism. The inclined surface 498 of the rotating arm 526 flips upward under the guidance of the proximal guide surface of the jaw drive mechanism, thereby causing the second engaging notch 530 of the rotating arm 526 to disengage from the second groove 534. At this time, the distal end surface 508 of the switching mechanism moves to engage with the jaw drive mechanism, thereby driving the jaw drive mechanism forward. The advantage of this design is that it simplifies the structure of the switching mechanism and makes the overall structure more compact.

[0207] 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.

[0208] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A clamping pliers, characterized in that, It includes a jaw assembly, an operating assembly, and a shaft assembly extending from the operating assembly; The shaft assembly includes a clamp box, a clamp delivery assembly, and a clamp pusher assembly; The clamp box includes a first end connected to the jaw assembly and a second end opposite to the first end. The clamp box contains N clamps, where N is greater than or equal to 2. The N clamps include a first clamp, a second clamp, and so on, up to the Nth clamp, arranged sequentially from the first end to the second end. The clamp box includes M workstations, where N is less than or equal to M. The M workstations include a first workstation, a second workstation, and so on, up to the Mth workstation, arranged sequentially from the first end to the second end. The first clamp is located at the first workstation, and the second clamp to the Nth clamp are arranged sequentially at the second workstation to the Nth workstation. The clamping assembly is used to abut against and push the first clamp forward into the jaw assembly; The push-clamp assembly is used to abut against and push each of the second to Nth clamps to move forward. The clamp includes a first clamp arm, a second clamp arm, and a connecting portion located between the first clamp arm and the second clamp arm. When the clamp is in the open state, the first clamp arm and the second clamp arm form a clamping surface. The clamping surfaces of the plurality of clamps are located on the same plane. The operating component drives the clamping component and the pushing component to move forward, and drives the jaw assembly to perform a jaw closing action; The clamping assembly is located on the first side of the clamping surface of the clamp; The push-clamp assembly is located on the second side of the clamping surface of the clamp, and the first side is different from the second side; The clamping box includes a bottom wall, a first side wall and a second side wall disposed opposite to each other, and the clamping surface of the clamp housed in the clamping box is parallel to the bottom wall; the clamping feeding assembly is located on the outside of the bottom wall of the clamping box, and the clamping pushing assembly is located on the inside of the bottom wall of the clamping box. The clamping feeding assembly and the clamping pushing assembly are independent components. The clamping feeding assembly and the clamping pushing assembly independently push the first clamp or other clamps besides the first clamp from both sides of the clamping box; the bottom wall of the clamping box includes an opening, a part of which is located at the first working position and another part is located at the second working position. The clamping feeding assembly enters the clamping box through the opening and is located between the first clamp and the second clamp.

2. The clamping pliers according to claim 1, characterized in that, The N clamping surfaces of the N clamps are located on the same plane.

3. The clamping pliers according to claim 1, characterized in that: The clamping assembly includes an elastic push rod and a clamping block disposed at one end of the elastic push rod; The rod assembly also includes a base, the base including a guide groove extending in the axial direction and a block groove communicating with the guide groove, the block groove including a guide ramp, the guide ramp being set at an angle to the axial direction; The guide groove accommodates the elastic push rod and guides the elastic push rod to move axially, the block groove accommodates the feeding block, and the guide ramp guides the feeding block into the opening.

4. The clamping forceps according to claim 3, characterized in that, The bottom wall includes a first bottom wall located in front of the opening and a second bottom wall located behind the opening; the base is installed to the clamping box, and the guide ramp is in contact with the first bottom wall.

5. The clamping forceps according to claim 3, characterized in that, The thickness of the clamping block is greater than the thickness of the elastic push rod.

6. The clamping forceps according to claim 3, characterized in that, The clamping assembly further includes a connecting rod extending in the axial direction, one end of which is connected to the elastic push rod, and the other end of which is connected to the operating assembly.

7. The clamping pliers according to claim 6, characterized in that, The guide groove also accommodates the connecting rod and guides the connecting rod to move along the axial direction.

8. The clamping pliers according to claim 7, characterized in that, The operating components further include an actuator and a mating mechanism; the actuator provides power to the clamping assembly and the pushing assembly; the mating mechanism includes a first mating member, an intermediate member, and a second mating member, wherein the first mating member drives the second mating member through the intermediate member; the clamping assembly is linked to the first mating member; The push-clamp assembly is linked to the second mating member; The direction of movement of the first mating member is opposite to the direction of movement of the second mating member.

9. The clamping pliers according to claim 1, characterized in that, The push clamp assembly is a push clamp seat, which includes a push clamp block, an elastic element, and a push clamp rod. The push clamp rod is provided with a side cavity, and the side cavity or the push clamp block is provided with a rotating shaft. The push clamp block is rotatably installed into the side cavity through the rotating shaft. The push clamp block includes an abutting end that abuts against and pushes the clamp forward. The abutting end is located at the far end of the push clamp block. One end of the elastic member is connected to the push clamp block, and the other end is connected to the push clamp rod. The elastic member provides the push clamp block with a force that rotates towards the outside of the side cavity, so that the abutting end of the push clamp block tilts towards the clamp.

10. The clamping pliers according to claim 9, characterized in that, The abutting end of the pusher block has a second abutting surface, which is configured to abut and push the clamp forward.

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