A clamping device

Abstract

This specification provides a clamping device. The clamping device includes: a clamping assembly comprising a clamp base and a plurality of clamping portions, at least one of the clamping portions being rotatable relative to the clamp base; and a conveying device comprising a sheath and one or more pulling portions, the sheath being releasably connected to the clamp base, and at least one of the one or more pulling portions being releasably connected to at least one of the plurality of clamping portions; wherein, when at least one of the one or more pulling portions moves from a distal end to a proximal end to satisfy at least one of the plurality of clamping portions under a preset condition, the clamping device locks.

Description

[0001] Cross-referencing

[0002] This application claims priority to Chinese patent applications 202111015788.X and 202111018883.5, filed on August 31, 2021, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This instruction manual relates to the field of medical devices, and in particular to a clamp device. Background Technology

[0004] In recent years, endoscopic technology has developed rapidly, giving rise to various surgical procedures that utilize endoscopy. Endoscopic surgery requires the use of hemostatic clips to close wounds. Conventional hemostatic clips have limited arm opening, making it difficult to close large wounds. Using multiple clips for closure complicates the procedure and affects subsequent operations. Furthermore, conventional hemostatic clips require multiple interlocking parts for locking after clamping tissue, which can easily lead to component failure during operation, resulting in incomplete locking and increased surgical risks. Summary of the Invention

[0005] One embodiment of this specification provides a clamping device, comprising: a clamping assembly including a clamp base and a plurality of clamping portions, at least one of the plurality of clamping portions being rotatable relative to the clamp base; a conveying device including a sheath and one or more pulling portions, the sheath being releasably connected to the clamp base, and at least one of the one or more pulling portions being releasably connected to at least one of the plurality of clamping portions; wherein, when at least one of the one or more pulling portions moves from a distal end to a proximal end such that at least one of the plurality of clamping portions satisfies a preset condition, the clamping assembly locks.

[0006] In some embodiments, at least one of the plurality of clamping portions includes a locked portion, and the clamping seat includes a locking portion; the preset condition includes at least two of the plurality of clamping portions being closed, and the locked portion extending axially to engage with the locking portion.

[0007] In some embodiments, the clamping portion includes a first clamping portion and / or a second clamping portion, and the locked portion is disposed at the proximal end of the first clamping portion and / or the second clamping portion.

[0008] In some embodiments, the first clamping portion includes a first hook disposed at the proximal end of the first clamping portion, and / or the second clamping portion includes a second hook disposed at the proximal end of the second clamping portion; the first hook and / or the second hook constitute the locked portion, and the distal end of the clamping seat constitutes the locking portion.

[0009] In some embodiments, the first hook and / or the second hook includes a first state and a second state. When the first hook and / or the second hook is in the first state, the first hook and / or the second hook can rotate relative to the clamp. When the first hook and / or the second hook is in the second state, at least a portion of the first hook and / or the second hook deforms and enters the interior of the clamp to form a fit.

[0010] In some embodiments, at least a portion of the first hook and / or the second hook deforms to increase the axial length into the clamp.

[0011] In some embodiments, the ratio of the axial length of the first hook and / or the second hook in the second state to the axial length of the first hook and / or the second hook in the first state ranges from 1.5 to 6.

[0012] In some embodiments, the one or more pull portions include a first control line, which is releasably connected to the first hook. The first control line moves from the distal end to the proximal end to change the first hook from the first state to the second state. After the first hook changes from the first state to the second state, the first clamping portion is locked, and the connection between the first control line and the first hook is released.

[0013] In some embodiments, the distal end of the first control line includes a first hook structure, which is hooked to the first hook.

[0014] In some embodiments, when the force exerted by the first control line on the first hook reaches a preset force value, the first hook changes from the first state to the second state; the preset force value ranges from 10N to 200N.

[0015] In some embodiments, the one or more pulling parts include a pulling member that is releasably connected to the second hook; the pulling member includes a support structure that includes a through hole disposed along the axial direction of the sheath, and the first control line passes through the through hole and is releasably connected to the first hook.

[0016] In some embodiments, the pulling member further includes a second hook structure disposed at the distal end of the support structure, the distal end of the second hook structure being hooked to the second hook.

[0017] In some embodiments, the radial dimension of the first hook structure is larger than the diameter of the through hole, and after the connection between the first control line and the first hook is released, the first hook structure engages with the through hole.

[0018] In some embodiments, after the first hook structure engages with the through hole, the first control line moves toward the proximal end to change the second hook from the first state to the second state; after the second hook changes from the first state to the second state, the second clamping part is locked, and the connection between the puller and the second hook is released.

[0019] In some embodiments, the one or more pulling parts include a second control line, which is releasably connected to the second hook. The second control line moves from the distal end to the proximal end to change the second hook from the first state to the second state. After the second hook changes from the first state to the second state, the second clamping part is locked, and the connection between the second control line and the second hook is released.

[0020] In some embodiments, the distal end of the tube wall of the clamp is provided with a plurality of elastic grooves, and adjacent elastic grooves form a spring piece. The proximal end of the spring piece is connected to the tube wall, and the distal end of the spring piece is a free end.

[0021] In some embodiments, the plurality of clamping portions further includes a third clamping portion, which is fixed relative to the clamping seat; after the first clamping portion and / or the second clamping portion is locked relative to the third clamping portion, the clamping device is locked.

[0022] In some embodiments, at least one of the plurality of clamping portions includes a locked structure, the clamping device includes a locking structure, and the preset condition includes at least one of the plurality of clamping portions moving axially from distal to proximal relative to the clamping seat to move the locked structure into the locking structure.

[0023] In some embodiments, the plurality of clamping portions include a first clamping portion and / or a second clamping portion, the first clamping portion and / or the second clamping portion being rotatable relative to the clamping seat under the action of at least one of the one or more pulling portions, and the locking structure being formed by the first clamping portion and / or the second clamping portion together with the clamping seat; the plurality of clamping portions further include a third clamping portion, the third clamping portion having axial movement freedom relative to the clamping seat, and the locked structure being disposed on the third clamping portion.

[0024] In some embodiments, the first clamping portion and / or the second clamping portion includes a sliding groove, and the clamping seat includes a locking groove, wherein the sliding groove and the locking groove coincide to form the locking structure.

[0025] In some embodiments, the one or more pull portions include a third control line that is releasably connected to the third clamping portion; the third clamping portion includes a pin that forms the locked structure, and the movement of the third control line from the distal end to the proximal end causes the pin to move toward the locking groove.

[0026] In some embodiments, the clamping device further includes a control device connected to the proximal end of at least one of the one or more pulling parts, the control device controlling the movement of the clamping part via at least one of the one or more pulling parts.

[0027] In some embodiments, the one or more pulling portions include a first pulling portion and a second pulling portion, the first pulling portion being releasably connected to at least one of the plurality of clamping portions rotatable relative to the clamp, and the second pulling portion being releasably connected to at least another of the plurality of clamping portions rotatable relative to the clamp; the control device controls the movement of the plurality of clamping portions rotatable relative to the clamp via the first pulling portion and the second pulling portion respectively, or the control device controls the movement of the plurality of clamping portions rotatable relative to the clamp simultaneously via the first pulling portion and the second pulling portion.

[0028] The locking part on the clamping part extends axially to cooperate with the locking part. The locking of the locking part and the locking part is controlled by axial force, which does not require additional force or action in other directions. This simplifies the structure and operation of the clamping device and reduces the probability of failure during the locking process. Attached Figure Description

[0029] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0030] Figure 1 This is a schematic block diagram of the clamping device shown in some embodiments of this specification;

[0031] Figure 2 This is a schematic diagram of the clamping device shown in some embodiments of this specification;

[0032] Figure 3 This is a schematic diagram of the clamp device shown in some embodiments of this specification;

[0033] Figure 4 This is a schematic diagram of the structure of the first clamping part or the second clamping part according to some embodiments of this specification;

[0034] Figure 5This is a schematic diagram of the structure of the clamp and the third clamping part according to some embodiments of this specification;

[0035] Figure 6 This is a cross-sectional view of the clamping device shown in some embodiments of this specification;

[0036] Figures 7 to 12 This is a schematic diagram illustrating the movement process of the clamping device according to some embodiments of this specification;

[0037] Figures 13 to 16 This is a schematic diagram illustrating the movement process of the clamping device according to some embodiments of this specification;

[0038] Figure 17 This is a schematic diagram of the clamp device shown in some embodiments of this specification;

[0039] Figure 18 This is a schematic diagram of the clamp device shown in some embodiments of this specification;

[0040] Figure 19 This is a schematic diagram of the structure of the second clamping part according to some embodiments of this specification;

[0041] Figure 20 This is a structural schematic diagram of the pull member according to some embodiments of this specification;

[0042] Figures 21 to 27 This is a schematic diagram illustrating the movement process of the clamping device according to some embodiments of this specification;

[0043] Figure 28 This is a schematic diagram of the clamp device shown in some embodiments of this specification;

[0044] Figure 29 This is a side view of the clamping device shown according to some embodiments of this specification;

[0045] Figure 30 This is a schematic diagram of the clamp structure according to some embodiments of this specification;

[0046] Figure 31 This is a schematic diagram of the structure of the first clamping part or the second clamping part according to some embodiments of this specification;

[0047] Figure 32 and Figure 33 This is a schematic diagram of the structure of the first clamping part / second clamping part and the clamping seat according to some embodiments of this specification;

[0048] Figure 34 and Figure 35 This is a schematic diagram of the structure of the third clamping part and the clamping seat according to some embodiments of this specification;

[0049] Figures 36 to 41 This is a schematic diagram illustrating the movement process of the clamping device according to some embodiments of this specification;

[0050] Figures 42 to 46 This is a schematic diagram of the movement process of a clamping device according to some embodiments of this specification.

[0051] In the attached drawings, the reference numerals are as follows: 1. Clamping device; 100. Clamping assembly; 101. Clamping part; 110. First clamping part; 111. First clamping arm; 112. First suture part; 113. First suture hole; 120. Second clamping part; 121. Second clamping arm; 122. Second suture part; 123. Second suture hole; 130. Third clamping part; 131. Third clamping arm; 132. Pin; 133. Hanging through hole; 134. Abutment part; 141. First hook; 142. Second hook; 143. Notch; 144. Hook hole; 150. Slit hole; 171. First slide groove; 172. Second slide groove; 181. First clearance groove; 182. Second clearance groove; 190. Rotary shaft hole; 191. First rotating shaft hole; 192. Second rotating shaft hole; 200. Clamp; 210. Rotary shaft; 211. First rotating shaft; 212. Second rotating shaft; 220. 230. Connecting groove; 240. Locking part; 250. Slot; 251. Clamping seat channel; 251. First part; 252. Second part; 260. Spring piece; 270. Elastic groove; 280. Locking groove; 281. Blocking part; 282. Engaging part; 300. Conveying device; 310. Sheath tube; 311. Connecting hole; 320. Pulling part; 301. First pulling part; 302. Second pulling part; 303. Third pulling part; 32 1. First control line; 322. Second control line; 323. Pulling component; 3231. Support structure; 3233. Second hook structure; 324. Third control line; 332. First hook structure; 333. Third hook structure; 340. Connecting pin; 341. Connecting arm; 400. Control device; 401. Control unit; 410. First control unit; 420. Second control unit; 430. Third control unit; 500. Organization. Detailed Implementation

[0052] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0053] As indicated in this specification and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0054] Some embodiments of this specification provide a clamping device that can be applied to medical endoscopes to perform clamping, hemostasis, suturing, and other operations during endoscopic surgery. In some embodiments, the clamping device includes a clamping device and a delivery device, which are releasably connected. The delivery device is used to insert the clamping device into the human body through the endoscope channel. After the delivery device controls the clamping device to complete opening, closing, locking, and releasing operations, the clamping device remains inside the human body. After the delivery device separates from the clamping device, the delivery device is withdrawn from the endoscope channel.

[0055] In some embodiments, the terms "proximal" and "distal" in this application can refer to direction. Specifically, along the axial direction of the clamp device (the direction in which the sheath of the clamp device extends within the endoscope channel), the side facing the operator is "proximal," and the side facing the insertion point into the body for treatment is "distal." "Proximal" and "distal" should not be construed as simply referring to the end point; they can also refer to orientation or the corresponding structural portion. The "radial" direction is perpendicular to the "axial" direction, or the axial direction is the direction in which the clamp or sheath extends, while the radial direction is perpendicular to the direction in which the clamp or sheath extends.

[0056] This specification includes, but is not limited to, Embodiment 1, Embodiment 2, and Embodiment 3. These three exemplary embodiments illustrate different implementations of the clamping device. Unless otherwise specified, the features of the three embodiments can be combined arbitrarily, and this specification does not impose any limitations on this.

[0057] The following will combine Figures 1 to 2 The features of the same parts of the clamping devices of Embodiments 1 to 3 are described in detail, but the features that are the same in Embodiments 1 to 3 are not limited to the contents of this part.

[0058] Figure 1 This is a schematic block diagram of the clamping device shown in some embodiments of this specification.

[0059] like Figure 1As shown, in some embodiments, the clamping device 1 includes a clamping assembly 100, which includes a clamping base 200 and a plurality of clamping portions 101, at least one of which is rotatable relative to the clamping base 200. In some embodiments, the clamping base 200 may be a structure for supporting the clamping portions 101. In some embodiments, at least one of the plurality of clamping portions 101 is rotatably connected to the clamping base 200, and rotation of the clamping portion 101 refers to deflection of the clamping portion 101 relative to the axis of the clamping base 200. In some embodiments, all of the plurality of clamping portions 101 are rotatable relative to the clamping base 200. In some embodiments, some of the plurality of clamping portions 101 are rotatable relative to the clamping base 200, while other portions of the clamping portions 101 are fixed relative to the clamping base 200 or are movable along the axial direction of the clamping base 200.

[0060] In some embodiments, the clamp device 1 includes a delivery device 300, which includes a sheath 310 and one or more pull parts 320. The sheath 310 is used to establish a channel for other structures to enter the human body, and the pull parts 320 are used to manipulate the clamping part 101 to rotate relative to the clamping seat 200.

[0061] In some embodiments, the sheath 310 is releasably connected to the clamp 200, and at least one of one or more pull parts 320 is releasably connected to at least one of a plurality of clamping parts 101. Here, "releasable connection" can mean that the two components remain connected when a preset requirement is met (e.g., when the external force is less than a preset threshold), and are released and separated from each other when the preset requirement is not met (e.g., when the external force is greater than a preset threshold).

[0062] In some embodiments, the pulling part 320 and the clamping part 101 can be connected one-to-one, and each pulling part 320 controls the rotation of one clamping part 101 independently. In some embodiments, one pulling part 320 can also be connected to multiple clamping parts 101, and one pulling part 320 controls the rotation of multiple clamping parts 101 simultaneously.

[0063] In some embodiments, the clamping device 100 locks when at least one of the pulling portions 320 moves from the distal end to the proximal end, causing at least one of the plurality of clamping portions 101 to meet a preset condition. Locking the clamping device 100 may result in all clamping portions 101 being in a non-rotatable state relative to the clamping seat 200. In some embodiments, the preset condition includes, but is not limited to: at least one axial movement or deformation of the clamping portion 101 to at least partially engage with the clamping seat 200, thereby restricting rotation of the clamping portion 101 through engagement with the clamping seat 200. In some embodiments, the preset condition may also be other conditions, such as restricting rotation of the clamping portion 101 by means of a locking member.

[0064] The clamping part 101 is moved by the pulling part 320 in the clamping device 1, so that the clamping part 101 locks the clamping device 100 when the preset conditions are met. The operation process is simple and the locking process involves few parts, so the probability of part failure is small, which improves the safety of the operation.

[0065] In some embodiments, at least one of the plurality of clamping portions 101 includes a locking portion ( Figure 1 (Not shown), the clamp 200 includes a locking part ( Figure 1 (Not shown), the locked part and the locking part 230 can cooperate to form a lock, thereby restricting the rotation of the clamping part 101 relative to the clamp 200.

[0066] In some embodiments, the preset conditions for locking the clamp device 100 include the closure of at least two of the plurality of clamping portions 101, and the locking portion extending axially to engage with the locking portion 230. Here, axial refers to the axial direction of the clamp 200. Axial extension means that the axial length of the locking portion when engaged with the locking portion 230 is greater than the initial axial length of the locking portion in the same posture. By having the locking portion on the clamping portion 101 extend axially to engage with the locking portion 230, the locking of the locking portion and the locking portion 230 is controlled by axial force, eliminating the need for additional forces or actions in other directions. This simplifies the structure and operation of the clamp device 100 and reduces the probability of failure during locking.

[0067] In some embodiments, the axial elongation of the locked portion can include, but is not limited to, elongation through various means such as deformation and telescoping. For example, the locked portion can be an elastic structure disposed on one or more clamping portions 101. This elastic structure deforms when the axial force exceeds a threshold, causing the locked portion to elongate axially, i.e., the axial length of the locked portion increases. The axially elongated locked portion can cooperate with the locking portion 230 to form a lock. When the clamping portion 101 is locked, the axial length of the locked portion is greater than the axial length before locking. For example, the locked portion can be an axially telescoping structure disposed on one or more clamping portions 101. When the axial force on the locked portion exceeds a threshold, it extends, thereby increasing the axial length of the locked portion, causing the locked portion to elongate to cooperate with the locking portion 230 to form a lock.

[0068] In some embodiments, the distal end of the pulling part 320 is releasably connected to the proximal end of the clamping part 101, and the force for axial elongation of the locked part is provided by the pulling part 320. The pulling part 320 moves from the distal end to the proximal end, thereby pulling the locked part to elongate axially. For example, controlling the movement of the pulling part 320 from the distal end to the proximal end controls the rotation, deformation, or extension of at least one clamping part 101 connected to the pulling part 320.

[0069] Figure 2 This is a structural schematic diagram of a clamping device according to some embodiments of this specification.

[0070] Combination Figure 1 and Figure 2 As shown, in some embodiments, the clamping device 1 further includes a control device 400, which is connected to the proximal end of at least one of the pulling parts 320. The control device 400 controls the movement of the clamping part 101 through at least one of the pulling parts 320. The movement of the clamping part 101 includes, but is not limited to, rotation and axial movement.

[0071] In some embodiments, the control device 400 includes one or more control units 401 disposed at the proximal end of the conveying device 300. The control unit 401 may be a component that can be directly operated by the user, such as a pull ring, a button, etc. The proximal end of the pull part 320 is connected to the control unit 401, and the distal end of the pull part 320 passes through the conveying device 300 and is connected to the clamping part 101. The user drives the pull part 320 to move axially along the sheath tube 310 by operating the control unit 401, thereby controlling the opening, closing, locking, and releasing operations of the clamping part 101 through the pull part 320.

[0072] In some embodiments, the plurality of pull portions 320 include a first pull portion 301 and a second pull portion 302, the first pull portion 301 being releasably connected to at least one of a plurality of clamping portions 101 rotatable relative to the clamp 200, and the second pull portion 302 being releasably connected to at least another of the plurality of clamping portions 101 rotatable relative to the clamp 200.

[0073] In some embodiments, the control unit 401 may include a first control unit 410 and a second control unit 420. The first control unit 410 is connected to the first pull unit 301, and the second control unit 420 is connected to the second pull unit 302. Thus, the first pull unit 301 and the second pull unit 302 respectively control the movement of a plurality of clamping parts 101 that are rotatable relative to the clamping seat 200, including but not limited to controlling the opening, closing, locking and releasing operations of the clamping parts 101. The two movements do not interfere with each other.

[0074] In some embodiments, the control device 400 controls the movement of a plurality of clamping parts 101 rotatable relative to the clamping seat 200 via a first pulling part 301 and a second pulling part 302. The user can pull the first pulling part 301 and the second pulling part 302 respectively to move the plurality of clamping parts 101 connected to the first pulling part 301 and the second pulling part 302. In some embodiments, the control device 400 may also include only one control part 401, which may be simultaneously connected to the first pulling part 301 and the second pulling part 302. The first pulling part 301 is connected to the proximal end of at least one clamping part 101, and the second pulling part 302 is connected to the proximal end of at least another clamping part 101; that is, one control part 401 controls the operation of the clamping parts 101 simultaneously by controlling the movement of the first pulling part 301 and the second pulling part 302.

[0075] In some embodiments, the control device 400 includes a control unit 401, the proximal ends of the first pulling part 301 and the second pulling part 302 are directly connected to the same control unit 401, the first pulling part 301 is connected to the proximal end of at least one clamping part 101, and the second pulling part 302 is connected to the proximal end of at least another clamping part 101; that is, a control unit 401 controls the operation of the clamping part 101 by controlling the movement of the first pulling part 301 and the second pulling part 302.

[0076] In some embodiments, the control device 400 includes a control unit 401, which can be connected to a first pull part 301. The distal end of the first pull part 301 can be switched to be connected to the proximal end of at least one clamping part 101 or a second pull part 302. For details regarding the switchable connection of the distal end of the first pull part 301 to the proximal end of at least one clamping part 101 or a second pull part 302, please refer to the description elsewhere in this specification.

[0077] In some embodiments, there is one pulling part 320, which is releasably connected to a plurality of clamping parts 101 that are rotatable relative to the clamping seat 200. The control device 400 controls the plurality of clamping parts 101 to rotate synchronously at the same time through one pulling part 320.

[0078] In some embodiments, at least one clamping portion 101 is axially movable relative to the clamping seat 200. The pulling portion 320 includes a third pulling portion 303, which is releasably connected to the at least one clamping portion 101 that is axially movable relative to the clamping seat 200. The control device 400 includes a third control portion 430, which is connected to the proximal end of the third pulling portion 303. The third control portion 430 pulls the corresponding clamping portion 101 axially along the clamping seat 200 via the third pulling portion 303.

[0079] The following will combine Figures 3 to 16A detailed description of an exemplary implementation of the clamp device of Embodiment 1.

[0080] Figure 3 This is a schematic diagram of the clamp device shown in some embodiments of this specification. Figure 4 This is a schematic diagram of the structure of the first clamping part or the second clamping part according to some embodiments of this specification. Figure 5 This is a schematic diagram of the structure of the clamp and the third clamping part according to some embodiments of this specification.

[0081] like Figures 3 to 5 As shown, the clamping part 101 includes a first clamping part 110 and / or a second clamping part 120. In some embodiments, the structures of the first clamping part 110 and the second clamping part 120 may be partially or completely identical.

[0082] In some embodiments, the clamping portion 101 includes a first clamping portion 110, and the locked portion includes a first locked portion disposed at the proximal end of the first clamping portion 110. In some embodiments, the first clamping portion 110 is rotatable relative to the clamping seat 200. In some embodiments, the first clamping portion 110 includes a first hook 141 disposed at the proximal end of the first clamping portion 110, the first hook 141 constituting the first locked portion, and the distal end of the clamping seat 200 constituting a locking portion 230. The first hook 141 can engage with the locking portion 230 of the clamping seat 200 when a preset condition is met.

[0083] In some embodiments, the clamping portion 101 includes a second clamping portion 120, and the locked portion includes a second locked portion disposed at the proximal end of the second clamping portion 120. In some embodiments, the second clamping portion 120 is rotatable relative to the clamping seat 200. In some embodiments, the second clamping portion 120 includes a second hook 142 disposed at the proximal end of the second clamping portion 120, the second hook 142 constituting the second locked portion, and the distal end of the clamping seat 200 constituting a locking portion 230, wherein the second hook 142 can engage with the locking portion 230 of the clamping seat 200 when a preset condition is met.

[0084] In some embodiments, the clamping portion 101 includes a first clamping portion 110 and a second clamping portion 120. The first clamping portion 110 includes a first hook 141, and the second clamping portion 120 includes a second hook 142. The distal end of the clamping seat 200 constitutes a locking portion 230. The first hook 141 and the second hook 142 can deform and extend axially to engage with the locking portion 230 when the force reaches a threshold.

[0085] In some embodiments, the first hook 141 and / or the second hook 142 includes a first state and a second state. When the first hook 141 and / or the second hook 142 is in the first state, the first hook 141 and / or the second hook 142 can rotate relative to the clamp 200. When the first hook 141 and / or the second hook 142 is in the second state, at least a portion of the first hook 141 and / or the second hook 142 deforms and extends axially into the interior of the clamp 200 to form a fit.

[0086] In some embodiments, the first hook 141 and / or the second hook 142 can change from a first state to a second state by deformation under force, and at least a portion of the first hook 141 and / or the second hook 142 is elastic and can grow along the axial direction of the clamp 200 when the force reaches a threshold.

[0087] In some embodiments, at least a portion of the first hook 141 and / or the second hook 142 deforms to increase its axial length into the clamp 200. In some embodiments, at least a portion of the first hook 141 is capable of deforming and elongating axially along the clamp 200 when subjected to a force threshold, and elongating to engage with the locking portion 230 of the clamp 200, thereby restricting the rotation of the first clamping portion 110 relative to the clamp 200. In some embodiments, at least a portion of the second hook 142 is capable of deforming and elongating axially along the clamp 200 when subjected to a force threshold, and elongating to engage with the locking portion 230 of the clamp 200, thereby restricting the rotation of the second clamping portion 120 relative to the clamp 200.

[0088] In some embodiments, the first hook 141 and the second hook 142 can increase their axial length through mechanical extension or rotation. In some embodiments, the first hook 141 and the second hook 142 can be composed of multiple parts forming a locking part. When subjected to force, all or part of the locking part will be displaced or deformed due to changes in mechanical fit, such as an interference fit between the locking part and the locking part 230.

[0089] In some embodiments, the axial length L1 when the first hook 141 and / or the second hook 142 are in the second state (e.g., ...) Figure 8 The axial length L2 (as shown) when the first hook 141 and / or the second hook 142 are in the first state (e.g.) Figure 9 The ratio (as shown) ranges from 1.5 to 6. In some embodiments, the axial length of the first hook 141 and / or the second hook 142 in the second state may be 1.8 mm, and the axial length of the first hook 141 and / or the second hook 142 in the first state may be 0.6 mm, with a ratio of 3.

[0090] In some embodiments, the thickness of the first hook 141 and / or the second hook 142 ranges from 0.1 mm to 1 mm to meet the stiffness requirements of the first hook 141 and / or the second hook 142. That is, when the first hook 141 and / or the second hook 142 reaches a threshold, the first hook 141 and / or the second hook 142 will deform without breaking. In some embodiments, the thickness of the first hook 141 and / or the second hook 142 is 0.3 mm, which maintains both structural miniaturization and meets the stiffness requirements.

[0091] In some embodiments, the first hook 141 and / or the second hook 142 may be a coiled structure with a notch 143. When the first hook 141 and / or the second hook 142 are subjected to force, they can deform and unfold from the notch 143 into a straight or arc-shaped structure, thereby exhibiting an effect of axial elongation along the clamp 200. In some embodiments, after deformation, the angle between the first hook 141 and / or the second hook 142 and the axis of the clamp 200 is 1° to 270°. In other embodiments, the first hook 141 and / or the second hook 142 may also be other shapes, such as J-shaped.

[0092] In some embodiments, the first hook 141 and / or the second hook 142 have the same circumferential thickness to reduce processing difficulty. Here, circumferential refers to the curling direction of the first hook 141 and / or the second hook 142. In some embodiments, the first hook 141 and / or the second hook 142 have different circumferential thicknesses, giving them different stiffnesses along the curling direction, thus controlling the deformation position of the first hook 141 and / or the second hook 142. For example, the position of the first hook 141 and / or the second hook 142 with the smaller circumferential thickness has lower stiffness. When the force on the first hook 141 and / or the second hook 142 reaches a threshold, the position with the smaller thickness deforms first, thereby controlling the deformation position of the first hook 141 and / or the second hook 142, and consequently controlling the shape of the first hook 141 and / or the second hook 142 after deformation.

[0093] In some embodiments, the stiffness of the first hook 141 and / or the second hook 142 ranges from 10N to 200N. In some embodiments, the stiffness of the first hook 141 and / or the second hook 142 ranges from 30N to 50N.

[0094] In some embodiments, the deformable areas of the first hook 141 and / or the second hook 142 and other non-deformable areas on the clamping portion may be made of the same material, such as stainless steel. In some embodiments, the deformable areas of the first hook 141 and / or the second hook 142 and other non-deformable areas on the clamping portion may be made of different materials; for example, the other non-deformable areas on the clamping portion may be made of stainless steel, while the deformable areas of the first hook 141 and / or the second hook 142 may be made of elastic silicone.

[0095] like Figure 3 and Figure 4 As shown, the first clamping portion 110 has a first clamping arm 111 at its distal end, and the second clamping portion 120 has a second clamping arm 121 at its distal end; the first clamping arm 111 has a first suture portion 112 with a pointed tip at its distal end, and the second clamping arm 121 has a second suture portion 122 with a pointed tip at its distal end. In some embodiments, the first suture portion 112 and the second suture portion 122 may be structures capable of penetrating tissue 500, such as a needle.

[0096] In some embodiments, a clamping space capable of clamping tissue 500 is formed between the first clamping arm 111 and the second clamping arm 121. When the first clamping arm 111 and the second clamping arm 121 are closed, the first suture portion 112 and the second suture portion 122 can insert into the tissue 500 and house the tissue 500 in the clamping space to achieve the purpose of suturing.

[0097] In some embodiments, the first clamping arm 111 is provided with a first sewing hole 113 at its distal end. The first sewing hole 113 may be an opening, slot, hole or other structure with space avoidance function or storage function provided at the distal end of the first clamping arm 111. The first sewing hole 113 is used to receive the second sewing part 122.

[0098] In some embodiments, the distal end of the second clamping arm 121 is provided with a second suture hole 123. The second suture hole 123 may be an opening, slot, hole or other structure with space avoidance function or storage function provided at the distal end of the second clamping arm 121. The second suture hole 123 is used to receive the first suture portion 112.

[0099] In some embodiments, the first clamping portion 110 and the second clamping portion 120 are in a closed state, the first suture portion 112 extends into the second suture hole 123, and the second suture portion 122 extends into the first suture hole 113. The first suture hole 113 can abut against the tip of the second suture portion 122, and the second suture hole 123 can abut against the tip of the first suture portion 112, to avoid excessive compression of the tissue 500 within the clamping space.

[0100] In some embodiments, the distance between the first clamping arm 111 and the second clamping arm 121 after closure can be 0.6 mm to 1.0 mm. The lengths of the first suture portion 112 and the second suture portion 122 can be 0.6 mm to 1.0 mm. The small distance between the first clamping arm 111 and the second clamping arm 121 after closure allows the wound tissue 500 to fit tightly, which is beneficial for wound healing.

[0101] In some embodiments, the clamping portion 101 includes an absorbable material. In some embodiments, the entire clamping portion is made of absorbable material. In some embodiments, a portion of the clamping portion 101 is made of absorbable material, while another portion is made of non-absorbable material, and the different materials can be fixed together by means of bonding, laser welding, or other methods.

[0102] In some embodiments, the absorbable material is polylactic acid, polyglycolic acid, or one or more combinations of medical biodegradable magnesium-based, iron-based, and tungsten-based biomaterials. In some embodiments, the absorbable material is a medical biodegradable magnesium-based material, such as a magnesium-zinc (Mg-Zn) alloy. Compared with biodegradable polymer materials, medical Mg-Zn alloys have higher mechanical strength, ensuring sufficient closing force during wound closure. Mg-Zn alloys also have the following advantages: good biodegradability: magnesium has a low standard electrode potential (-2.37V), making it easily and completely degraded in the digestive tract environment through slow corrosion, participating in the body's metabolism and being naturally excreted; good biocompatibility: Mg can catalyze and activate more than 300 enzymes, acting as an important activator for various enzymes in cellular metabolism, participating in various physiological activities such as protein and DNA synthesis, energy storage and transport, nerve signal transmission, and muscle contraction; antibacterial properties: the optimal pH for bacterial growth is 7.4–7.6, and Mg degradation produces a large number of OH- ions, causing an increase in the microenvironment pH. This highly alkaline microenvironment inhibits the normal growth of bacteria, thereby achieving the purpose of antibacterial activity.

[0103] In some embodiments, the first suture portion 112 and the second suture portion 122 that pierce the tissue 500 can be made of absorbable material. This allows the absorbable material to be absorbed and degraded after hemostasis suturing, causing the clamp device 100 to detach from the tissue 500 and be excreted from the digestive system. Conventional clamp devices 100 typically ligate the mucosal layer of the digestive wall upon closure. After hemostasis is achieved, they will detach along with the clamped necrotic tissue 500 and be excreted through the digestive system. However, in the embodiments of this specification, the clamp device 100 may ligate the muscle layer of the digestive wall when closing large wounds. Generally, clamp devices 100 bound to the muscle layer take longer to detach or are difficult to detach. In such cases, if the material bound to the tissue 500 is absorbable, the phenomenon of the clamp device 100 being difficult to detach from the muscle tissue 500 can be avoided, reducing medical risks.

[0104] In some embodiments, the absorption time of the clamping portion ranges from 7 to 30 days, so that the tissue 500 has a sufficiently long recovery time to ensure complete wound healing.

[0105] like Figure 3 and Figure 5 As shown, in some embodiments, the distal end of the tube wall of the clamp 200 is provided with multiple elastic grooves 270, and adjacent elastic grooves 270 form a spring piece 260. The proximal end of the spring piece 260 is connected to the tube wall of the clamp 200, and the distal end of the spring piece 260 is a free end. By setting the elastic grooves 270 to form the spring piece 260, the free end of the spring piece 260 can be deflected in the radial direction of the clamp 200. That is, during the process of the first hook 141 and / or the second hook 142 (locked part) changing from the first state to the second state, the spring piece 260 can be deflected radially outward to provide a larger clearance space. When the deformed first hook 141 and / or the second hook 142 (locked part) engages with the locking part 230 of the clamp 200, the spring piece 260 deflects radially inward and returns to its original shape. The spring piece 260 and the tube wall of the clamp 200 form the locking part 230.

[0106] In some embodiments, two spring pieces 260 may be provided at the far end of the tube wall of the clamp 200, respectively symmetrically arranged on both sides of the tube wall, one spring piece 260 being used to cooperate with the first hook 141, and the other spring piece 260 being used to cooperate with the second hook 142.

[0107] In some embodiments, the clamp 200 includes a clamp channel 250 extending axially along the clamp 200. In some embodiments, the radial dimension of the clamp channel 250 is constant.

[0108] In some embodiments, the clamp channel 250 includes a first portion 251 at a distal end and a second portion 252 at a proximal end, with at least one of one or more pull portions 320 passing through the second portion 252 and releasably connected to at least one of a plurality of clamping portions. In some embodiments, the distal end of the second portion 252 constitutes a locking portion 230. In some embodiments, a spring tab 260 of the clamp 200 is disposed on the tube wall at the distal end of the second portion 252.

[0109] In some embodiments, the first portion 251 constitutes a rotation space, and at least one of the plurality of clamping portions is rotatable relative to the clamping base 200 in the rotation space under the action of at least one of one or more pulling portions 320. In some embodiments, the first portion 251 includes a slot 240, which constitutes the rotation space. In some embodiments, the slot 240 includes a first slot and a second slot symmetrically arranged; the first slot can provide rotation space for the first clamping portion 110, and the second slot can provide rotation space for the second clamping portion 120. By directly providing the first slot and the second slot on the clamping base 200, the process is simple and the rotation space is larger, which facilitates the free opening and closing operation of the first clamping portion 110 and the second clamping portion 120.

[0110] Figure 6 This is a cross-sectional view of a clamping device shown according to some embodiments of this specification.

[0111] In some embodiments, such as Figure 6 As shown, the clamp 200 is provided with clamp channels 250 of different radial dimensions. In some embodiments, the clamp channel 250 includes a first channel at the distal end and a second channel at the proximal end, the first channel and the second channel penetrating each other, and the radial dimension of the first channel is larger than that of the second channel. In some embodiments, the first channel forms a rotation space, and at least one of the plurality of clamping parts is rotatable relative to the clamp 200 in the rotation space of the first channel under the action of at least one of one or more pulling parts 320; the distal end of the second channel forms a locking part 230, the locked part of the clamping part is housed in the locking part 230 of the second channel and forms a fit, thereby realizing the locking of the clamping part and the clamp 200. The clamp 200 is provided with channels of different radial dimensions to distinguish the rotation space and the locking part 230, and the locking of the first clamping part 110 and the second clamping part 120 is more stable.

[0112] In some embodiments, when the radial dimension of the first channel meets the rotation range of the clamping part, the first channel may not be provided with a slot, that is, a rotation space is formed inside the first channel. In this way, the clamping part can be prevented from being exposed outside the clamping seat 200, thus protecting the clamping part.

[0113] Combination Figures 3 to 6As shown, the first clamping part 110 and / or the second clamping part 120 are rotatably connected to the clamping base 200 via a rotating shaft 210. In some embodiments, the rotating shaft 210 is fixedly connected to the clamping base 200, for example, the rotating shaft 210 is fixedly mounted on the first part 251 of the clamping base 200.

[0114] In some embodiments, there is one rotating shaft 210, and the first clamping part 110 and the second clamping part 120 are connected to the same rotating shaft 210. For example, the first clamping part 110 and the second clamping part 120 are respectively provided with rotating shaft 210 holes 190 at their proximal ends. The rotating shaft 210 passes through the rotating shaft 210 holes 190 at the proximal ends of the first clamping part 110 and the second clamping part 120 and is mounted on the clamping base 200, so that the first clamping part 110 and the second clamping part 120 can rotate relative to the clamping base 200 about the rotating shaft 210.

[0115] In some embodiments, when the pulling part 320 moves from the proximal end to the distal end, the first clamping part 110 and the second clamping part 120 rotate around the pivot 210 in the rotation space, causing the first clamping arm 111 and the second clamping arm 121 to move away from each other, i.e., the clamp device 100 is in an open state; when the pulling part 320 moves from the distal end to the proximal end, the first clamping part 110 and the second clamping part 120 rotate around the pivot 210 in the rotation space, causing the first clamping arm 111 and the second clamping arm 121 to move closer to each other, i.e., the clamp device 100 is in a closed state.

[0116] In some embodiments, the clamping force of the first clamping arm 111 and the second clamping arm 121 when closed is in the range of 0.1N to 10N. In some embodiments, when the first clamping arm 111 and the second clamping arm 121 are closed, if the pulling force of the clamping device that causes the clamping part to detach from the tissue 500 is greater than 0.6N, it can be considered that the clamping part and the tissue 500 are clamped stably.

[0117] Figure 7 This is a partial cross-sectional view of the clamping device shown in some embodiments of this specification.

[0118] Combination Figures 3 to 7 As shown, in some embodiments, one or more pull parts 320 include a first control line 321 (the first control line 321 may be a first pull part 301), the first control line 321 is releasably connected to the first hook 141, the first control line 321 moves from the distal end to the proximal end to change the first hook 141 from a first state to a second state; after the first hook 141 changes from the first state to the second state, the first clamping part 110 is locked, and the connection between the first control line 321 and the first hook 141 is released.

[0119] In some embodiments, the distal end of the first control line 321 is releasably connected to the first hook 141, and the proximal end of the first control line 321 is connected to the control device 400. The user can control the first control line 321 to move from the distal end to the proximal end, or control the first control line 321 to move from the proximal end to the distal end, through the control device 400. In some embodiments, when the first control line 321 moves from the distal end to the proximal end, the first clamping part 110 rotates around the pivot 210 of the clamping seat 200. When the first clamping part 110 rotates to the closed state, the first control line 321 continues to exert a force on the first hook 141 from the distal end to the proximal end. When the force exerted by the first control line 321 on the first hook 141 reaches a preset force value, the first hook 141 changes from the first state to the second state.

[0120] In some embodiments, the preset force value ranges from 10N to 200N. Within this preset force value range, the first hook 141 deforms and extends axially along the clamp 200 until it engages with the locking portion 230 of the clamp 200, thereby locking the first clamping portion 110. After the first clamping portion 110 is locked, the first control line 321 continues to move from the distal end to the proximal end until the connection with the first hook 141 is released. In some embodiments, the preset force value can be 35N.

[0121] In some embodiments, the material strength of the first hook 141 is less than the material strength of the first control line 321, such that when the first control line 321 pulls the first hook 141, the first hook 141 deforms while the first control line 321 does not deform.

[0122] In some embodiments, such as Figure 3 and Figure 4 As shown, the distal end of the first control line 321 includes a first hook structure 332, which is hooked to the first hook 141. The first hook structure 332 allows for a releasable connection between the first control line 321 and the first hook 141.

[0123] In some embodiments, the first hook 141 has a hook hole 144 for forming a releasable limiting engagement with the first hook structure 332. In some embodiments, the first hook structure 332 may include a protrusion extending radially along the first control line 321, the outer diameter of the protrusion being larger than the inner diameter of the first hook 141, and the protrusion engaging with the hook hole 144 after the first control line 321 passes through the first hook 141. In some embodiments, the protrusion may be integrally formed with the first control line 321. In some embodiments, the protrusion may be separately formed from the first control line 321. In some embodiments, the protrusion may be spherical, annular, polyhedral, or other shapes.

[0124] In some embodiments, the first mounting structure 332 includes a bent portion (see...). Figure 17 As shown, the bent portion passes through the hook hole 144 located at the near end of the first clamping portion 110 and forms a limiting fit with the hook hole 144.

[0125] In some embodiments, the bending angle of the bent portion can be any angle, such as less than 90°, equal to 90°, or greater than 90°. When the bending angle of the bent portion is less than 90°, the limiting relationship between the bent portion and the hook hole 144 is more reliable.

[0126] In some embodiments, the length of the bent portion is in the range of 0.5 mm to 10 mm, and the bent portion within this length range can prevent it from prematurely dislodging from the hook hole 144 of the first clamping portion 110.

[0127] In some embodiments, the material strength of the bend is greater than that of the first hook 141. Thus, when the first control line 321 applies a force from the distal end to the proximal end to the first hook 141, the first hook 141 deforms while the bend does not deform, thereby causing the first hook 141 to deform and elongate and engage with the locking part 230 of the clamp 200.

[0128] In some embodiments, the end of the bent portion may have a protrusion, and the bent portion and the protrusion together act on the hook hole 144 of the first hook 141 to form a limiting fit.

[0129] In some embodiments, the ratio of the inner diameter of the first hook 141 to the outer diameter of the first control line 321 ranges from 1.01 to 2. In some embodiments, the outer diameter of the first control line 321 may be 0.4 mm, then the inner diameter of the first hook 141 may range from 0.404 mm to 0.8 mm. The inner diameter of the first hook 141 is slightly larger than the outer diameter of the first control line 321 to facilitate the first control line 321 passing through the first hook 141 to form a clearance fit.

[0130] In some embodiments, a notch 143 is formed on the first hook 141, and the notch 143 may be positioned toward the distal end of the clamping portion. In some embodiments, the size of the notch 143 is smaller than the outer diameter of the first control line 321 to prevent the first control line 321 from coming out of the notch 143.

[0131] In some embodiments, one or more pull portions 320 include a second control line 322 (the second control line 322 may be a second pull portion 302), the second control line 322 is releasably connected to the second hook 142, and the movement of the second control line 322 from the distal end to the proximal end causes the second hook 142 to change from a first state to a second state; after the second hook 142 changes from the first state to the second state, the second clamping portion 120 locks, and the connection between the second control line 322 and the second hook 142 is released. In some embodiments, at least one control portion 401 is connected to at least one of the pull portions 320, including one of the control portions 401 being connected to the second control line 322, and the control portion 401 controls the movement of the second control line 322 from the distal end to the proximal end.

[0132] In some embodiments, the distal end of the second control line 322 is releasably connected to the second hook 142, and the proximal end of the second control line 322 is connected to the control device 400. The user can control the movement of the second control line 322 from the distal end to the proximal end, or vice versa, via the control device 400. In some embodiments, when the second control line 322 moves from the distal end to the proximal end, the second clamping portion 120 rotates about the pivot 210 of the clamping seat 200. When the second clamping portion 120 rotates to the closed state, the second control line 322 continues to exert a force on the second hook 142 from the distal end to the proximal end. When the force exerted by the second control line 322 on the second hook 142 reaches a preset force value, the second hook 142 transitions from the second state to the second state. Further examples of the second control line 322 can be found in the description of the first control line 321.

[0133] In some embodiments, the distal end of the second control line 322 includes a third hook structure 333, which is hooked to the second hook 142. In some embodiments, the third hook structure 333 is the same as the first hook structure 332, and the way the third hook structure 333 and the second control line 322 are coupled is also the same. For more details about the third hook structure 333, please refer to the relevant description of the first hook structure 332. The embodiments in this specification will not be repeated here.

[0134] In some embodiments, the third hooking structure 333 includes a bent portion with a bending angle of less than 90°. The bent portion passes through a hooking hole 144 located near the proximal end of the second clamping portion 120 and forms a limiting fit with the hooking hole 144. The bent portion of the third hooking structure 333 is the same as the bent portion of the first hooking structure 332, and will not be described again in this specification.

[0135] In some embodiments, when the first control line 321 and the second control line 322 move from the distal end to the proximal end, the first clamping part 110 and the second clamping part 120 rotate from the open state to the closed state, and the first hook 141 and the second hook 142 engage with the locking part 230 of the clamping seat 200. When the first clamping part 110 is closed relative to the second clamping part 120, the entire clamping device 100 is locked.

[0136] like Figure 3 and Figure 5 As shown, in some embodiments, the plurality of clamping portions further includes a third clamping portion 130, which is fixed relative to the clamping base 200. In some embodiments, the third clamping portion 130 is disposed between the first clamping portion 110 and the second clamping portion 120. The third clamping portion 130 includes a third clamping arm 131, which forms a first clamping space with the first clamping arm 111. When the first clamping arm 111 and the third clamping arm 131 are closed, the tissue 500 can be clamped in the first clamping space. A clamping space is also formed between the second clamping arm 121 and the third clamping arm 131. When the second clamping arm 121 and the third clamping arm 131 are closed, the tissue 500 can be clamped in the second clamping space. In some embodiments, after the first clamping portion 110 and / or the second clamping portion 120 are locked relative to the third clamping portion 130, the clamping device 100 is locked.

[0137] In some embodiments, the third clamping part 130 is provided with a slit hole 150 at its distal end, and the first clamping part 110 and the second clamping part 120 are respectively provided with a first suture part 112 and a second suture part 122 with pointed tips at their distal ends. When the clamping device 100 is closed, the first clamping arm 111 and / or the second clamping arm 121 move closer to each other relative to the third clamping arm 131, and the suture parts with pointed tips are respectively housed in the slit hole 150. The clamping device 100 uses the suture parts with pointed tips and the slit hole 150 to cooperate with each other, so that the clamping and fixing effect with the tissue 500 is more stable.

[0138] In some embodiments, the releasable connection between the clamping part and the control line is referred to as the internal connection of the clamping device 100, and the releasable connection between the clamp seat 200 and the sheath 310 is referred to as the external connection of the clamping device 100. For example... Figure 7As shown, in some embodiments, the distal end of the sheath 310 is provided with a connecting hole 311, the clamp 200 is provided with a connecting groove 220, and at least one of the one or more pulling parts 320 is fitted with a connecting pin 340. The distal end of the connecting pin 340 passes through the connecting hole 311 and is fixed to the connecting groove 220, that is, the clamp 200 and the sheath 310 are externally connected by the connecting pin 340. In some embodiments, the distal end of the connecting pin 340 is formed with a connecting arm 341, which can pass through the connecting hole 311 of the sheath 310 and extend into the connecting groove 220 of the clamp 200, thereby limiting the axial displacement between the clamp 200 and the sheath 310.

[0139] In some embodiments, after at least one of the pull portions 320 separates from the proximal end of the clamping portion, it continues to move from the distal end to the proximal end, pulling the connecting pin 340 apart from the connecting hole 311, thus separating the sheath 310 and the clamp 200. For example, after the internal connection of the clamp device 100 is broken, i.e., after at least one of the pull portions 320 separates from the clamping portion, it continues to move from the distal end to the proximal end, causing the connecting pin 340 to be subjected to a tension from the proximal end to the distal end. This causes the two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath 310 and is hooked into the connecting groove 220 of the clamp 200, to deform and disengage from the connecting hole 311, i.e., separating the clamp 200 from the sheath 310. In some embodiments, other external connection methods, such as elastic connections, may also be used, i.e., the internal connection method of the clamping portion and the pull portion 320 is independent of the external connection method of the clamp 200 and the sheath 310.

[0140] Figures 7 to 12 This is a schematic diagram illustrating the movement of a clamping device according to some embodiments of this specification. The control device 400 of the clamping device 1 includes two control units 401, which independently control the operation of the first clamping part 110 and the second clamping part 120. By independently controlling the first clamping part 110 and the second clamping part 120 with the two control units 401, the clamping angle and clamping amount of the first clamping part 110 and the second clamping part 120 relative to the third clamping part 130 can be adjusted respectively, making it more suitable for suturing large wounds.

[0141] The following will combine Figure 7-12 The operation process of the control device 400 operating the first clamping part 110 and the second clamping part 120 through the pulling part 320 is described. However, the following operation steps are only illustrative and the operation process is not limited to following these steps. For example, if the first clamping part 110 is closed and not locked, after the second clamping part 120 is closed, the first clamping part 110 and the second clamping part 120 are locked respectively.

[0142] Step 1, as follows Figure 7As shown, both the first clamping portion 110 and the second clamping portion 120 can be in a closed state initially. The control device 400 controls the first clamping portion 110 and the second clamping portion 120 to change from the closed state to the open state. In some embodiments, the first control line 321 is connected to the first hook 141 at the proximal end of the first clamping portion 110. The first control unit 410 controls the first control line 321 to move from the proximal end to the distal end, causing the first clamping portion 110 to rotate radially outward around the rotation axis 210 in the rotation space, and the first clamping portion 110 opens radially outward relative to the third clamping portion 130. Correspondingly, the second control line 322 is connected to the second hook 142 at the proximal end of the second clamping portion 120. The second control unit 420 controls the second control line 322 to move from the proximal end to the distal end, causing the second clamping portion 120 to rotate radially outward around the rotation axis 210 in the rotation space, and the second clamping portion 120 opens radially outward relative to the third clamping portion 130.

[0143] Step two, as Figure 8 As shown, the first clamping part 110 changes from an open state to a closed state, while the second clamping part 120 remains open. In some embodiments, the first control part 410 controls the first control line 321 to move from the distal end to the proximal end, thereby causing the first clamping part 110 to rotate radially inward around the pivot 210 in the rotation space, and the first clamping part 110 closes relative to the third clamping part 130; the first suture part 112 of the first clamping part 110 inserts into the tissue 500 to house a portion of the tissue 500 in the clamping space between the first clamping arm 111 and the third clamping arm 131, and the first suture part 112 of the first clamping part 110 passes through the suture hole 150 of the third clamping part 130.

[0144] Step 3, as Figure 9 As shown, the first clamping part 110 changes from a closed state to a locked state, while the second clamping part 120 remains open. In some embodiments, the first control part 410 controls the first control line 321 to continue moving from the distal end to the proximal end. The first hook 141 of the first clamping part 110 is deformed by force and extends axially to form a locked part. The first hook 141 (locked part) moves from the rotation space to the locking part 230. During this process, the first control line 321 separates from the first hook 141, and the first clamping part 110 is locked into the clamping seat 200.

[0145] Step four, as Figure 10As shown, the first clamping part 110 remains locked, and the second clamping part 120 changes from an open state to a closed state. In some embodiments, the second control part 420 controls the second control line 322 to move from the distal end to the proximal end, thereby causing the second clamping part 120 to rotate radially inward around the pivot 210 in the rotation space, and the second clamping part 120 closes relative to the third clamping part 130; the second suture part 122 of the second clamping part 120 inserts into the tissue 500 to house part of the tissue 500 within the clamping space of the second clamping arm 121 and the third clamping arm 131, and the suture part of the second clamping part 120 passes through the suture hole 150 of the third clamping part 130.

[0146] Step 5, as Figure 11 As shown, the first clamping part 110 remains in a locked state, and the second clamping part 120 changes from a closed state to a locked state. In some embodiments, the second control part 420 controls the second control line 322 to continue moving from the distal end to the proximal end, the second hook of the second clamping part 120 is deformed by force and extends to form a locked part, and the second hook 142 (locked part) moves from the rotation space to the locking part 230. During this process, the second control line 322 separates from the second hook 142, and the second clamping part 120 is locked into the clamping seat 200.

[0147] Step six, as Figure 12 As shown, the external connection between the clamp device 100 and the conveying device 300 is released. After the internal connection of the clamp device 100 is broken, that is, after the first control line 321 and the second control line 322 are released from the first clamping part 110 and the second clamping part 120 respectively, the first control line 321 and the second control line 322 continue to be pulled from the distal end to the proximal end, so that the connecting pin 340 is subjected to a pulling force from the proximal end to the distal end. The two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath tube 310 and is hooked into the connecting groove 220 of the clamp seat 200, deform and come out of the connecting hole 311, that is, the clamp seat 200 separates from the sheath tube 310.

[0148] Figures 13 to 16 This is a schematic diagram illustrating the movement process of a clamping device according to some embodiments of this specification. The clamping device 1 includes a control unit 401 that simultaneously controls the operation of the first clamping part 110 and the second clamping part 120. By having a single control unit 401 simultaneously control the first clamping part 110 and the second clamping part 120, operation becomes simpler.

[0149] The following will combine Figure 13-16 The operation process of the control device 400 operating the first clamping part 110 and the second clamping part 120 through the pulling part 320 is described. However, the following operation steps are only illustrative and the operation process is not limited to following these steps.

[0150] Step 1, as follows Figure 13As shown, the first clamping portion 110 and the second clamping portion 120 can both be in a closed state initially. The control device 400 controls the first clamping portion 110 and the second clamping portion 120 to change from the closed state to the open state. In some embodiments, the first control line 321 is connected to the first hook 141 at the proximal end of the first clamping portion 110, and the second control line 322 is connected to the second hook 142 at the proximal end of the second clamping portion 120. At the same time, the first control line 321 and the second control line 322 are controlled to move from the proximal end to the distal end, thereby driving the first clamping portion 110 and the second clamping portion 120 to rotate radially outward around the rotating shaft 210 in the rotation space. The first clamping portion 110 and the second clamping portion 120 open radially outward relative to the third clamping portion 130.

[0151] Step two, as Figure 14 As shown, both the first clamping portion 110 and the second clamping portion 120 change from an open state to a closed state. In some embodiments, the first control line 321 and the second control line 322 move simultaneously from the distal end to the proximal end, thereby driving the first clamping portion 110 and the second clamping portion 120 to rotate radially inward around the rotating axis 210 in the rotation space, and the first clamping portion 110 and the second clamping portion 120 respectively close radially inward relative to the third clamping portion 130; the suture portions of the first clamping portion 110 and the second clamping portion 120 respectively insert into the tissue 500 to accommodate part of the tissue 500 in the clamping space of the first clamping arm 111 and the third clamping arm 131, and the clamping space of the second clamping arm 121 and the third clamping arm 131, and the first suture portion 112 of the first clamping portion 110 passes through the suture hole 150 of the third clamping portion 130, and the second suture portion 122 of the second clamping portion 120 passes through the suture hole 150 of the third clamping portion 130.

[0152] Step 3, as Figure 15 As shown, the first clamping part 110 and the second clamping part 120 change from a closed state to a locked state. In some embodiments, the first control line 321 and the second control line 322 continue to move from the distal end to the proximal end simultaneously. The hooks of the first clamping part 110 and the second clamping part 120 are deformed and elongated under force to form locked parts. The first hook 141 and the second hook 142 (locked parts) move from the rotation space to the locking part 230. During this process, the first control line 321 separates from the first hook 141, and the second control line 322 separates from the second hook 142. The first clamping part 110 and the second clamping part 120 are respectively locked into the clamping seat 200.

[0153] Step four, as Figure 16As shown, the external connection between the clamp device 100 and the conveying device 300 is released. In some embodiments, after the internal connection of the clamp device 100 is broken, that is, after the first control line 321 and the second control line 322 are released from the first clamping part 110 and the second clamping part 120 respectively, the first control line 321 and the second control line 322 continue to be pulled from the distal end to the proximal end, so that the connecting pin 340 is subjected to a pulling force from the proximal end to the distal end. The two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath tube 310 and is hooked into the connecting groove 220 of the clamp seat 200, deform and come out of the connecting hole 311, that is, the clamp seat 200 separates from the sheath tube 310.

[0154] The following will combine Figures 17 to 27 The exemplary implementation of the clamp device 1 in Embodiment 2 is described in detail below. Some structures of the clamp device 1 in Embodiment 2 may be the same as those in Embodiment 1. For the same structures, this specification will not repeat them again; please refer to the relevant descriptions in Embodiment 1.

[0155] In some embodiments, the clamping device 1 includes a clamping assembly 100, which includes a clamping base 200 and a clamping portion 101. The clamping portion 101 includes a first clamping portion 110, a second clamping portion 120, and a third clamping portion 130. The first clamping portion 110 and the second clamping portion 120 are rotatable relative to the clamping base 200, and the third clamping portion 130 is fixedly connected to the clamping base 200.

[0156] In some embodiments, the clamping device 1 includes a conveying device 300, which includes a sheath 310 and a pulling part 320. The sheath 310 is releasably connected to the clamping seat 200, and the pulling part 320 is releasably connected to at least one of the clamping parts 101. The movement of at least one clamping part 101 can be controlled simultaneously by the pulling part 320. More examples of the conveying device 300 can be found in the relevant description in Embodiment 1.

[0157] In some embodiments, the clamping device 1 includes a control device 400, which includes at least one control unit 401 connected to a pulling unit 320. The control device 400, through one of the control units 401, drives the pulling unit 320 from the distal end to the proximal end until a preset condition is met, at which point the clamping device 100 locks. Further examples of the control device 400 can be found in the relevant description in Embodiment 1.

[0158] According to the structure of the clamping device 1 in Embodiment 2, the first clamping part 110, the second clamping part 120 and the third clamping part 130 can be controlled by a pulling part 320. The user can control the opening, closing, locking and releasing operations of the first clamping part 110 and the second clamping part 120 with one hand, thereby freeing up one of the user's hands, making it easier for the user to perform other actions, and improving the convenience and efficiency of the operation.

[0159] Figure 17 This is a schematic diagram of the clamp device shown in some embodiments of this specification. Figure 18 This is a schematic diagram of the clamp device shown in some embodiments of this specification. Figure 19 This is a schematic diagram of the structure of the second clamping part according to some embodiments of this specification. Figure 20 This is a structural schematic diagram of the pull member according to some embodiments of this specification.

[0160] In some embodiments, the structures of the first clamping portion 110 and the second clamping portion 120 may be different. Specifically, the first clamping portion 110 and the first clamping portion 120 of Embodiment 1... Figure 4 The first clamping portion 110 has the same structure as the locking portion 230. The first clamping portion 110 includes a locking portion that extends axially to engage with the locking portion 230. The first clamping portion 110 includes a first hook 141 disposed near its proximal end, and the first hook 141 constitutes the locking portion. More examples of the first clamping portion 110 can be found in the relevant description in Embodiment 1. Figure 19 As shown, the second clamping portion 120 includes a locking portion that extends axially to engage with the locking portion 230. In some embodiments, the second clamping portion 120 includes a second hook 142 disposed near its proximal end, with the first hook 141 constituting the locking portion. The second clamping portion 120 differs from the first clamping portion 110 in that the configuration of the second hook 142 is different from that of the first hook 141. In some embodiments, the second hook 142 is configured as a J-shape with a notch 143, and the hook hole 144 of the second hook 142 is formed as an elongated hole.

[0161] In some embodiments, the pulling part 320 includes a first control line 321, which is releasably connected to the first hook 141. Movement of the first control line 321 from the distal end to the proximal end causes the first hook 141 to transition from a first state to a second state. After the first hook 141 transitions from the first state to the second state, the first clamping part 110 locks, and the connection between the first control line 321 and the first hook 141 is released. In some embodiments, at least one control part 401 is connected to at least one of the pulling parts 320, including one of the control parts 401 connected to the first control line 321, which controls the movement of the first control line 321 from the distal end to the proximal end.

[0162] In some embodiments, the pulling part 320 includes a pulling member 323, which is releasably connected to the second hook 142. In some embodiments, the pulling member 323 is axially movable relative to the clamp 200, and when the pulling member 323 moves from the distal end to the proximal end, it can drive the second clamping part 120 to change from a first state to a second state.

[0163] In some embodiments, the pull member 323 includes a support structure 3231, which includes a through hole disposed along the axial direction of the sheath tube 310, and a first control line 321 passes through the through hole and is releasably connected to the first hook 141.

[0164] In some embodiments, the first control line 321 is releasably connected to the first hook 141 via a first hooking structure 332, the radial dimension of which is larger than the diameter of the through hole. The first hooking structure 332 may include a protrusion or a bend; further examples of protrusions or bends can be found in the relevant description in Embodiment 1. In some embodiments, after the connection between the first control line 321 and the first hook 141 is released, the first hooking structure 332 engages with the through hole.

[0165] In some embodiments, the pulling member 323 further includes a second hooking structure 3233 disposed at the distal end of the support structure 3231, the distal end of the second hooking structure 3233 being hooked to the second hook 142. The distal end of the second hooking structure 3233 has a hook that engages with the elongated hole of the second hook 142. When the pulling member 323 moves from the distal end to the proximal end, the hook of the second hooking structure 3233 slides within the elongated hole of the second hook 142, thereby causing the second clamping portion 120 to rotate within the rotational space.

[0166] In some embodiments, after the first hook structure 332 engages with the through hole, the first control line 321 moves proximally, causing the second hook 142 to transition from a first state to a second state; that is, the second hook 142 deforms under force and elongates axially, further engaging with the locking portion 230 of the clamp 200. After the second hook 142 transitions from the first state to the second state, the second clamping portion 120 locks, and the connection between the pull member 323 and the second hook 142 is released. In some embodiments, when the second clamping portion 120 is locked, the clamping device 100 is locked.

[0167] Figures 21 to 27 This is a schematic diagram of the movement process of a clamping device according to some embodiments of this specification. The clamping device 1 includes a control device 400 and a pulling part 320. The pulling part 320 simultaneously controls the operation of the first clamping part 110 and the second clamping part 120, making operation simple.

[0168] The following will combine Figures 21 to 27The operation process of the control device 400 operating the first clamping part 110 and the second clamping part 120 through the pulling part 320 is described. However, the following operation steps are only illustrative and the operation process is not limited to following these steps.

[0169] Step 1, as follows Figure 21 As shown, the first clamping part 110 changes from a closed state to an open state. In some embodiments, the first control line 321 passes through the through hole of the pull member 323 and is connected to the first hook 141 at the proximal end of the first clamping part 110. The pull member 323 is connected to the second hook 142 at the proximal end of the second clamping part 120, controlling the first control line 321 to move from the proximal end to the distal end, thereby driving the first clamping part 110 to rotate radially outward around the rotating shaft 210 in the rotation space, and the first clamping part 110 opens radially outward relative to the third clamping part 130.

[0170] Step two, as Figure 22 As shown, the first clamping part 110 changes from an open state to a closed state, while the second clamping part 120 remains closed. In some embodiments, the first control line 321 moves from the distal end to the proximal end, causing the first clamping part 110 to rotate radially inward around the pivot 210 in the rotation space, and the first clamping part 110 closes radially inward relative to the third clamping part 130; the first suture part 112 of the first clamping part 110 inserts into the tissue 500 to house part of the tissue 500 within the clamping space of the first clamping arm 111 and the third clamping arm 131, and the first suture part 112 of the first clamping part 110 passes through the suture hole 150 of the third clamping part 130.

[0171] Step 3, as Figure 23 As shown, the first clamping part 110 changes from a closed state to a locked state, while the second clamping part 120 remains closed. In some embodiments, the first control line 321 continues to move from the distal end to the proximal end, the first hook 141 of the first clamping part 110 is deformed by force and elongates to form a locked part, and the first hook 141 moves from the rotation space to the locking part 230 of the clamping seat 200. During this process, the first control line 321 separates from the first hook 141, and the first hooking structure 332 of the first control line 321 engages with the through hole of the pull member 323, and the first clamping part 110 is locked into the clamping seat 200.

[0172] Step four, as Figure 24As shown, the first clamping part 110 remains locked, and the second clamping part 120 changes from a closed state to an open state. In some embodiments, the first control line 321 moves from the proximal end to the distal end, thereby driving the pull member 323 to move from the proximal end to the distal end. The hook at the distal end of the second hook structure 3233 of the pull member 323 is connected to the second hook 142 at the proximal end of the second clamping part 120. Then, the second hook structure 3233 of the pull member 323 can actuate the second clamping part 120 to rotate radially outward around the pivot 210 in the rotation space. The second clamping part 120 opens relative to the third clamping part 130, and a clamping space of the clamping organization 500 is formed between the first clamping part 110 and the third clamping part 130.

[0173] Step 5, as Figure 25 As shown, the first clamping part 110 remains locked, and the second clamping part 120 changes from an open state to a closed state. In some embodiments, the first control line 321 moves from the distal end to the proximal end, thereby causing the distal end of the second hook structure 3233 of the pull member 323 to slide in the hook hole 144 of the second hook 142, so that the second clamping part 120 rotates radially inward around the pivot 210 in the rotation space, and the second clamping part 120 closes relative to the third clamping part 130; the second suture part 122 of the second clamping part 120 inserts into the tissue 500 to house part of the tissue 500 in the clamping space of the second clamping arm 121 and the third clamping arm 131, and the suture part of the second clamping part 120 passes through the suture hole 150 of the third clamping part 130.

[0174] Step six, as Figure 26 As shown, the first clamping part 110 remains in a locked state, and the second clamping part 120 changes from a closed state to a locked state. In some embodiments, the first control line 321 continues to move from the distal end to the proximal end, and the pull member 323 moves from the distal end to the proximal end. The pull member 323 pulls the second hook 142 of the second clamping part 120, which is deformed by force and extends to form a locked part. The second hook 142 (locked part) moves from the rotation space to the locking part 230. During this process, the pull member 323 separates from the second hook 142, and the second clamping part 120 is locked into the clamping seat 200.

[0175] Step seven, as Figure 27As shown, the external connection between the clamp device 100 and the conveying device 300 is released. In some embodiments, after the internal connection of the clamp device 100 is broken, that is, after the first control line 321 is released from the first clamping part 110 and the second clamping part 120 respectively, the pulling member 323 continues to move from the distal end to the proximal end, so that the pulling member 323 engages with the connecting pin 340, for example, the pulling member 323 engages with the distal end or the proximal end of the connecting pin 340. When the pulling member 323 engages with the connecting pin 340, the first control line 321 continues to pull the pulling member 323 from the distal end to the proximal end. The pulling member 323 pushes the connecting pin 340 to receive a thrust from the proximal end to the distal end. The two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath tube 310 and is hooked into the connecting groove 220 of the clamp seat 200, deform and disengage from the connecting hole 311, that is, the clamp seat 200 separates from the sheath tube 310.

[0176] The following will combine Figures 28 to 46 The exemplary implementation of the clamp device 1 in Embodiment 3 is described in detail below. Some structures of the clamp device 1 in Embodiment 3 may be the same as those in Embodiment 1. For the same structures, this specification will not repeat them again; please refer to the relevant descriptions in Embodiment 1.

[0177] In some embodiments, the clamping device 1 includes a clamping assembly 100, which includes a clamping base 200 and a clamping portion. The clamping portion includes a first clamping portion 110, a second clamping portion 120, and a third clamping portion 130. The first clamping portion 110 and the second clamping portion 120 are rotatable relative to the clamping base 200, and the third clamping portion 130 is axially movable relative to the clamping base 200.

[0178] In some embodiments, the clamping device 1 includes a conveying device 300, which includes a sheath 310 and a pulling part 320. The sheath 310 is releasably connected to the clamping seat 200, and the pulling part 320 is releasably connected to at least one of the clamping parts. The movement of at least one clamping part can be controlled simultaneously by the pulling part 320. More examples of the conveying device 300 can be found in the relevant description in Embodiment 1.

[0179] In some embodiments, the plurality of pulling parts 320 include a first control line 321, a second control line 322, and a third control line 324 (the third control line 324 may be a third pulling part 303). The first control line 321 is releasably connected to the first clamping part 110, the second control line 322 is releasably connected to the second clamping part 120, and the third control line 324 is releasably connected to the third clamping part 130. The first clamping part 110 and the second clamping part 120 are controlled by the first control line 321 and the second control line 322, respectively, and perform opening, closing, locking, and releasing operations. The third clamping part 130 is controlled by the third control line 324 to move axially along the clamping seat 200.

[0180] In some embodiments, the proximal end of the third clamping portion 130 is provided with a hook-in through hole 133, and the distal end of the third control line 324 passes through the hook-in through hole 133 and is releasably connected to the third clamping portion 130. The distal end of the third control line 324 may have a hook-in structure such as a protrusion or a bend; more examples of hook-in structures can be found in the relevant description in Embodiment 1.

[0181] In some embodiments, the clamping device 1 includes a control device 400, which includes at least one control unit 401 connected to a pulling unit 320. The control device 400, through one of the control units 401, drives the pulling unit 320 from the distal end to the proximal end until a preset condition is met, at which point the clamping device 100 locks. Further examples of the control device 400 can be found in the relevant description in Embodiment 1.

[0182] Figure 28 This is a schematic diagram of the clamp device shown in some embodiments of this specification. Figure 29 This is a side view of a clamping device shown according to some embodiments of this specification. Figure 30 This is a schematic diagram of the clamp structure according to some embodiments of this specification. Figure 31 This is a schematic diagram of the structure of the first clamping part or the second clamping part according to some embodiments of this specification. Figure 32 and Figure 33 This is a schematic diagram of the structure of the first clamping part / second clamping part and the clamping seat according to some embodiments of this specification.

[0183] like Figures 28 to 32 As shown, in some embodiments, the plurality of clamping portions 101 include a first clamping portion 110 and / or a second clamping portion 120, which are rotatable relative to the clamping base 200 under the action of at least one of one or more pulling portions 320. The hooks, stitching portions, clamping arms, and other structures of the first clamping portion 110 and the second clamping portion 120 are the same as those in Embodiment 1, and these same structures can be found in the relevant description in Embodiment 1.

[0184] In some embodiments, a rotating shaft 210 is provided on the clamp 200, the rotating shaft 210 including a first rotating shaft 211 and a second rotating shaft 212. A first clamping part 110 is rotatably connected to the clamp 200 via the first rotating shaft 211, and a second clamping part 120 is rotatably connected to the clamp 200 via the second rotating shaft 212. In some embodiments, the proximal end of the first clamping part 110 is provided with a first rotating shaft hole 191 for the first rotating shaft 211 to pass through; the proximal end of the first clamping arm 111 is also provided with a first hook 141 for releasable connection with the first control line 321. In some embodiments, the first clamping part 110 is provided with a first clearance groove 181, the first clearance groove 181 is used to provide clearance space for the second rotating shaft 212, and when the first clamping part 110 rotates around the first rotating shaft 211, the second rotating shaft 212 is located within the first clearance groove 181.

[0185] In some embodiments, the second clamping portion 120 and the first clamping portion 110 are disposed opposite to each other and have the same structure. The proximal end of the second clamping portion 120 is provided with a second pivot hole 192 for the second pivot 212 to pass through; the proximal end of the second clamping portion 120 is also provided with a second hook 142 for releasable connection with the second control line 322. In some embodiments, the second clamping portion 120 is provided with a second clearance groove 182, which provides clearance space for the first pivot 211. When the second clamping portion 120 rotates around the second pivot 212, the first pivot 211 is located within the second clearance groove 182.

[0186] In some embodiments, such as Figure 30 As shown, the clamp 200 has a clamp channel 250 extending axially, and the proximal end of the clamping portion can be partially housed within the clamp channel 250. In some embodiments, a first rotating shaft 211 and a second rotating shaft 212 are fixedly provided at the distal end of the clamp 200. The first clamping portion 110 is mounted to the clamp 200 via the first rotating shaft 211 and is rotatable relative to the clamp 200, and the second clamping portion is mounted to the clamp 200 via the second rotating shaft 212 and is rotatable relative to the clamp 200. Further examples of the clamp 200 can be found in the relevant description in Embodiment 1.

[0187] In some embodiments, at least one of the plurality of clamping parts 101 includes a locked structure, the clamping device 1 includes a locking structure, and the preset condition includes at least one of the plurality of clamping parts moving axially from the distal end to the proximal end relative to the clamping seat 200 to move the locked structure into the locking structure, at which time the clamping part is locked relative to the clamping seat 200.

[0188] In some embodiments, the locking structure is jointly formed by a first clamping portion 110 and / or a second clamping portion 120 and a clamping seat 200; the plurality of clamping portions also include a third clamping portion 130, which has axial movement freedom relative to the clamping seat 200, and the locked structure is disposed on the third clamping portion 130. When the third clamping portion 130 moves from the distal end to the proximal end of the clamping seat 200 into the locking structure, the third clamping portion 130 is locked relative to the clamping seat 200. Through the cooperation of the locked structure and the locking structure, when the first clamping portion 110 and the second clamping portion 120 are open, the third clamping portion 130 can extend and form a clamping space with the first clamping portion 110 and the second clamping portion 120; when the first clamping portion 110 and the second clamping portion 120 are closed, the third clamping portion 130 can shorten, providing a larger accommodating space for the tissue within the clamping space, and enabling the tissue 500 on both sides of the third clamping portion 130 to close, thereby improving the healing effect.

[0189] In some embodiments, the first clamping portion 110 and / or the second clamping portion 120 include a sliding groove. In some embodiments, the sliding groove includes a first sliding groove 171 disposed in the first clamping portion 110 and / or a second sliding groove 172 disposed in the second clamping portion 120, wherein the opening direction of the first sliding groove 171 is parallel to the axial direction of the first clamping portion 110, and the opening direction of the second sliding groove 172 is parallel to the axial direction of the second clamping portion 120. In some embodiments, the clamping seat 200 includes a locking groove 280, and the sliding groove of the clamping portion and the locking groove 280 coincide to form a locking structure.

[0190] In some embodiments, the first slide 171 or the second slide 172 is a closed slide. In some embodiments, the first slide 171 or the second slide 172 is a semi-closed slide.

[0191] like Figure 34 and 35 As shown, in some embodiments, the third clamping part 130 includes a pin 132, which forms a locking structure. In some embodiments, the pin 132 and the third clamping part 130 are integrally formed. In some embodiments, the pin 132 and the third clamping part 130 are separately formed and assembled onto the third clamping part 130 by means of snap-fit, welding, bonding, etc.

[0192] In some embodiments, the third control line 324 moves from the distal end to the proximal end, causing the pin 132 to move toward the locking groove 280. When the pin 132 moves into the locking structure, the third control line 324 is released from the third clamping part 130.

[0193] In some embodiments, the locking groove 280 includes a blocking portion 281 and a engaging portion 282. The radial dimension of the blocking portion 281 is smaller than the radial dimension of the pin 132, and the radial dimension of the engaging portion 282 is larger than the radial dimension of the pin 132. The blocking portion 281 can deform when subjected to a force greater than a preset value.

[0194] In some embodiments, the third clamping portion 130 moves from the distal end to the proximal end, and the pin 132 presses the blocking portion 281 of the locking groove 280 from the distal end to the proximal end, causing the blocking portion 281 to deform and the radial opening to increase, allowing the pin 132 to pass over the blocking portion 281; after the pin 132 passes over the blocking portion 281 and enters the engaging portion 282 of the locking groove 280, the blocking portion 281 restores its deformation and stops the axial movement of the pin 132, that is, the pin 132 is locked in the engaging portion 282 of the locking groove 280, thereby restricting the axial displacement of the pin 132 along the clamp 200.

[0195] In some embodiments, the proximal end of the third clamping part 130 is provided with an abutment part 134, and the third clamping part 130 moves axially from the proximal end to the distal end within the clamping channel 250. The abutment part 134 and the rotating shaft 210 abut against each other to prevent the third clamping part 130 from dislodging from the distal end of the clamping channel 250.

[0196] Figures 36 to 41 This is a schematic diagram of the movement process of the clamping device 1 according to some embodiments of this specification.

[0197] In some embodiments, Figures 36 to 41 As shown, the control lines include a first control line 321 and a second control line 322. The distal end of the first control line 321 is releasably connected to the first clamping part 110, and the distal end of the second control line 322 is releasably connected to the second clamping part 120. The control device 400 is provided with a control unit 401, which includes a first control unit 410 and a second control unit 420. The proximal end of the first control line 321 is connected to the first control unit 410, and the proximal end of the second control line 322 is connected to the second control unit 420. The first control unit 410 and the second control unit 420 move independently, as do the first clamping part 110 and the second clamping part 120. By independently controlling the first clamping part 110 and the second clamping part 120 with the two control units 401, the clamping angle and clamping amount of the first clamping part 110 and the second clamping part 120 relative to the third clamping part 130 can be adjusted respectively, which is more suitable for suturing large wounds.

[0198] The following will combine Figures 36 to 41 The operation process of the control device 400 operating the first clamping part 110 and the second clamping part 120 through the pulling part 320 is described. However, the following operation steps are only illustrative and the operation process is not limited to following these steps.

[0199] Step 1, as follows Figure 36As shown, both the first clamping portion 110 and the second clamping portion 120 can be in a closed state initially. The control device 400 controls the first clamping portion 110 and the second clamping portion 120 to change from the closed state to the open state. In some embodiments, the first control line 321 is connected to the first hook 141 of the first clamping portion 110. The first control unit 410 controls the first control line 321 to move from the proximal end to the distal end, causing the first clamping portion 110 to rotate radially outward around the first rotating shaft 211 in the first slot, and the first clamping portion 110 opens radially outward relative to the third clamping portion 130. Correspondingly, the second control line 322 is connected to the second hook 142 of the second clamping portion 120. The second control unit 420 controls the second control line 322 to move from the proximal end to the distal end, causing the second clamping portion 120 to rotate radially outward around the rotating shaft in the second slot, and the second clamping portion 120 opens radially outward relative to the third clamping portion 130. When the first clamping part 110 rotates around the first rotating shaft 211, the second rotating shaft 212 is located in the first clearance groove 181; when the second clamping part 120 rotates around the second rotating shaft 212, the first rotating shaft 211 is located in the second clearance groove 182. The third control line 324 moves from the proximal end to the distal end, thereby driving the third clamping part 130 to move axially from the proximal end to the distal end. The proximal end of the third clamping part 130 is provided with an abutment part 134. The proximal end of the third clamping part 130 moves axially within the clamping seat channel 250. The abutment part 134 and the rotating shaft (the first rotating shaft 211 and the second rotating shaft 212) abut against each other to prevent the third clamping part 130 from dislodging from the distal end of the clamping seat channel 250.

[0200] Step two, as Figure 37 As shown, the first clamping part 110 changes from an open state to a closed state, while the second clamping part 120 remains open. The first control part 410 controls the first control line 321 to move from the distal end to the proximal end, thereby causing the first clamping part 110 to rotate radially inward around the first rotating axis 211 within the first slot, and the first clamping part 110 closes relative to the third clamping part 130; the first suture part 112 of the first clamping part 110 inserts into the tissue 500 to collect part of the tissue 500 within the clamping space of the first clamping arm 111 and the third clamping arm 131.

[0201] Step 3, as Figure 38As shown, the first clamping part 110 remains closed, and the second clamping part 120 changes from an open state to a closed state. In some embodiments, the second control part 420 controls the second control line 322 to move from the distal end to the proximal end, thereby causing the second clamping part 120 to rotate radially inward around the second rotating shaft 212 in the second slot, and the second clamping part 120 closes relative to the third clamping part 130; the second suture part 122 of the second clamping part 120 inserts into the tissue 500 to receive part of the tissue 500 into the clamping space of the second clamping arm 121 and the third clamping arm 131; the first sliding groove 171 of the first clamping part 110 and the second sliding groove 172 of the second clamping part 120 are radially aligned and at least partially overlap with the locking groove 280 of the clamping seat 200 to form a locking structure.

[0202] Step four, as Figure 39 As shown, the first clamping part 110 remains locked, the second clamping part 120 remains locked, and the third clamping part 130 moves to the locked position. In some embodiments, after the first clamping part 110 and the second clamping part 120 are closed, the third control line 324 moves from the distal end to the proximal end, thereby driving the third clamping part 130 to move from the distal end to the proximal end. The pin 132 (locked structure) provided in the third clamping part 130 moves to the locked position, and the pin 132 (locked structure) cooperates with the locking structure. In this process, the pin 132 presses against the blocking part 281 of the locking groove 280 from the distal end to the proximal end, causing the blocking part 281 to deform and its radial opening to increase, allowing the pin 132 to pass through the blocking part 281 of the locking groove 280. After the pin 132 passes through the blocking part 281 of the locking groove 280 and enters the engaging part 282 of the locking groove 280, the blocking part 281 returns to its original deformation, preventing the pin 132 from moving axially, thus locking the pin 132 in the engaging part 282 of the locking groove 280. The first clamping part 110, the second clamping part 120, and the third clamping part 130 are fixed relative to the clamping seat 200.

[0203] Step 5, as Figure 40 As shown, the connection between the clamping device 100 and the conveying device 300 is broken. The third control line 324 continues to move from the distal end to the proximal end, causing the third clamping part 130 to move from the distal end to the proximal end. The third control line 324 disengages from the hook hole 144 of the third clamping part 130. The first control line 321 continues to move from the distal end to the proximal end, causing the first clamping part 110 to move from the distal end to the proximal end. The first hook 141 of the first clamping part 110 deforms, causing the first control line 321 to separate from the first clamping part 110. The second control line 322 continues to move from the distal end to the proximal end, causing the second clamping part 120 to move from the distal end to the proximal end. The second hook 142 of the second clamping part 120 deforms, causing the second control line 322 to separate from the second clamping part 120. At this time, the control line and the clamping part are separated.

[0204] Step six, as Figure 41As shown, the external connection between the clamp device 100 and the conveying device 300 is broken, and the clamp device 100 and the conveying device 300 separate. After the internal connection between the clamp device 100 and the conveying device 300 is broken, that is, after the control line is separated from the clamping part, the control line continues to be pulled from the far end to the near end, so that the connecting pin 340 is subjected to a pulling force from the near end to the far end. The two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath tube 310 and is hooked into the connecting groove 220 of the clamp seat 200, deform and come out of the connecting hole 311, that is, the clamp seat 200 separates from the sheath tube 310.

[0205] Figures 42 to 46 This is a schematic diagram of the movement process of a clamping device according to some embodiments of this specification.

[0206] In some embodiments, Figures 42 to 46 As shown, the control lines include a first control line 321 and a second control line 322. The distal end of the first control line 321 is releasably connected to the first clamping part 110 via a first hook 141, and the distal end of the second control line 322 is releasably connected to the second clamping part 120 via a second hook 142. The control device 400 is provided with a control unit 401, and the proximal ends of the first control line 321 and the second control line 322 are connected to the control unit 401. The control unit 401 synchronously controls the movement of the first control line 321 and the second control line 322, and the first clamping part 110 and the second clamping part 120 move synchronously. The control lines also include a third control line 324, and the control device 400 also includes a third control device 400. The distal end of the third control line 324 is releasably connected to the third clamping part 130, and the proximal end of the third control line 324 is connected to the third control device 400. The third control device 400 controls the movement of the third clamping part 130. The control unit 401 simultaneously controls the first clamping unit 110 and the second clamping unit 120, making the operation more convenient.

[0207] The following will combine Figures 42 to 46 The operation process of the control device 400 operating the first clamping part 110 and the second clamping part 120 through the pulling part 320 is described. However, the following operation steps are only illustrative and the operation process is not limited to following these steps.

[0208] Step 1, as follows Figure 42As shown, both the first clamping part 110 and the second clamping part 120 are in an open state. A first control line 321 is connected to the first hook 141 of the first clamping part 110, and a second control line 322 is connected to the second hook 142 of the second clamping part 120. Simultaneously, the first control line 321 and the second control line 322 are controlled to move from proximal to distal ends, causing the first clamping part 110 and the second clamping part 120 to rotate radially outward around the pivot in the first slot and the second slot, respectively. The first clamping part 110 and the second clamping part 120 are equivalent to the third clamping part 130 opening radially outward. When the first clamping part 110 rotates around the first pivot 211, the second pivot 212 is located within the first clearance groove 181; when the second clamping part 120 rotates around the second pivot 212, the first pivot 211 is located within the second clearance groove 182. The third control line 324 moves from the proximal end to the distal end, thereby driving the third clamping part 130 to move axially from the proximal end to the distal end. The proximal end of the third clamping part 130 is provided with an abutment part 134. The proximal end of the third clamping part 130 moves axially within the clamping channel 250. The abutment part 134 and the rotating shaft (the first rotating shaft 211 and the second rotating shaft 212) abut against each other to prevent the third clamping part 130 from dislodging from the distal end of the clamping channel 250.

[0209] Step two, as Figure 43 As shown, both the first clamping part 110 and the second clamping part 120 are in a closed state. The first control line 321 and the second control line 322 move simultaneously from the distal end to the proximal end, thereby driving the first clamping part 110 and the second clamping part 120 to rotate radially inward around the pivot in the first slot and the second slot, respectively. The first clamping part 110 and the second clamping part 120 are respectively closed radially inward relative to the third clamping part 130. The first suture portion 112 of the first clamping portion 110 inserts into the tissue 500 and collects a portion of the tissue 500 into the clamping space of the first clamping arm 111 and the third clamping arm 131, and the distal end of the first suture portion 112 of the first clamping portion 110 is collected into the second suture hole 123 of the second clamping portion 120; the second suture portion 122 of the second clamping portion 120 inserts into the tissue 500 and collects a portion of the tissue 500 into the clamping space of the second clamping arm 121 and the third clamping arm 131, and the distal end of the second suture portion 122 of the second clamping portion 120 is collected into the first suture hole 113 of the first clamping portion 110.

[0210] Step 3, as Figure 44As shown, the clamping part is in a locked state. After the first clamping part 110 and the second clamping part 120 are closed, the third control line 324 moves from the distal end to the proximal end, causing the third clamping part 130 to move from the distal end to the proximal end. The pin 132 (locked structure) provided in the third clamping part 130 moves to the locked position, and the pin 132 (locked structure) cooperates with the locking structure. Specifically, the pin 132 presses the blocking part 281 of the locking groove 280 from the distal end to the proximal end, causing the blocking part 281 to deform and the radial opening to increase, allowing the pin 132 to pass through the blocking part 281 of the locking groove 280. After the pin 132 passes through the blocking part 281 of the locking groove 280 and enters the engaging part 282 of the locking groove 280, the blocking part 281 returns to its original deformation, preventing the pin 132 from moving axially, that is, the pin 132 is locked in the engaging part 282 of the locking groove 280. The first clamping part 110, the second clamping part 120 and the third clamping part 130 are fixed relative to the clamping base 200.

[0211] Step four, as Figure 45 As shown, the connection between the clamping device 100 and the conveying device 300 is broken. The third control line 324 continues to move from the distal end to the proximal end, causing the third clamping part 130 to move from the distal end to the proximal end. The third control line 324 disengages from the hook hole 144 of the third clamping part 130. The first control line 321 and the second control line 322 simultaneously continue to move from the distal end to the proximal end, simultaneously causing the first clamping part 110 and the second clamping part 120 to move from the distal end to the proximal end. The first hook 141 of the first clamping part 110 deforms, causing the first control line 321 to separate from the first clamping part 110. The second hook 142 of the second clamping part 120 deforms, causing the second control line 322 to separate from the second clamping part 120. At this time, the control lines and clamping parts are separated.

[0212] Step 5, as Figure 46 As shown, the external connection between the clamp device 100 and the conveying device 300 is broken, and the clamp device 100 and the conveying device 300 separate. After the internal connection between the clamp device 100 and the conveying device 300 is broken, that is, after the control line is separated from the clamping part, the control line continues to be pulled from the far end to the near end, so that the connecting pin 340 is subjected to a pulling force from the near end to the far end. The two connecting arms 341 of the connecting pin 340, which passes through the connecting hole 311 of the sheath tube 310 and is hooked into the connecting groove 220 of the clamp seat 200, deform and come out of the connecting hole 311, that is, the clamp seat 200 separates from the sheath tube 310.

[0213] The beneficial effects that the embodiments of this application may bring include, but are not limited to:

[0214] (1) The clamping part is pulled by the pulling part in the clamping device, so that the clamping part locks the clamping device when the preset conditions are met. The operation process is simple and the locking process involves few parts, so the probability of part failure is small, which improves the safety of the operation.

[0215] (2) By extending the locked part on the clamping part along the axial direction to cooperate with the locking part, the locking of the locked part and the locking part 230 is controlled by axial force, without the need to provide additional force and action in other directions, which simplifies the structure and operation of the clamping device 100, and the probability of failure during the locking process is small.

[0216] (3) By independently controlling the first clamping part and the second clamping part through two control parts, the clamping angle and clamping amount of the first clamping part and the second clamping part relative to the third clamping part can be adjusted respectively, which is more suitable for suturing large wounds.

[0217] (4) The clamping device includes a control unit that simultaneously controls the operation of the first clamping part and the second clamping part. By controlling the first clamping part and the second clamping part simultaneously through a single control unit, the operation becomes more convenient.

[0218] (5) The first clamping part, the second clamping part and the third clamping part can be controlled by a pull part. The user can control the opening, closing, locking and releasing of the first clamping part and the second clamping part with one hand, thereby freeing up one of the user's hands and making it easier for the user to perform other actions, thus improving the convenience and efficiency of the operation.

[0219] (6) By setting a locking structure and a locking structure, the third clamping part can move axially relative to the clamping seat and can be locked relative to the clamping seat. When the first clamping part and the second clamping part open, the third clamping part can extend and form a clamping space with the first clamping part and the second clamping part. When the first clamping part and the second clamping part close, the third clamping part can shorten, providing a larger accommodating space for the tissue in the clamping space, and enabling the tissue on both sides of the third clamping part to close, thereby improving the healing effect.

[0220] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects may be any one or a combination of the above, or any other possible beneficial effects.

[0221] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.

[0222] Furthermore, this specification uses specific terms to describe embodiments thereof. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Moreover, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined.

[0223] Similarly, it should be noted that, in order to simplify the descriptions disclosed herein and thus aid in the understanding of one or more embodiments, the foregoing description of embodiments in this specification sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this method of disclosure does not imply that the subject matter of this specification requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0224] For each patent, patent application, patent application publication, and other material, such as articles, books, specifications, publications, and documents, referenced in this specification, the entire contents of which are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this specification, as well as documents that limit the broadest scope of the claims in this specification (currently or subsequently appended to this specification). It should be noted that in the event of any inconsistency or conflict between the descriptions, definitions, and / or terminology used in the supplementary materials to this specification and the content of this specification, the descriptions, definitions, and / or terminology used in this specification shall prevail.

[0225] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A clip device, characterized in that The utility model relates to a clip device, a delivery device and a delivery system, and belongs to the field of medical devices. The clip device comprises a clip seat and a plurality of clamping parts, at least one of the plurality of clamping parts being rotatable relative to the clip seat. The delivery device comprises a sheath and one or more pulling parts, the sheath being releasably connected to the clip seat, and at least one of the one or more pulling parts being releasably connected to at least one of the plurality of clamping parts. The plurality of clamping parts comprises a first clamping part. The first clamping part comprises a first hook arranged at the proximal end of the first clamping part. The one or more pulling parts comprise a first control line, the first control line being releasably connected to the first hook, and movement of the first control line from the distal end to the proximal end causing the first hook to change from a first state to a second state; in the first state, the first hook is rotatable relative to the clip seat; in the second state, the first hook is axially elongated into the clip seat to form a fit, the first clamping part is locked, and the connection between the first control line and the first hook is released.

2. The clip device of claim 1, wherein The plurality of clamping parts comprises a second clamping part, the second clamping part comprising a second hook arranged at the proximal end of the second clamping part; the one or more pulling parts comprise a second control line, the second control line being releasably connected to the second hook, and movement of the second control line from the distal end to the proximal end causing the second hook to change from the first state to the second state; in the first state, the second hook is rotatable relative to the clip seat; in the second state, the second hook is axially elongated into the clip seat to form a fit, the second clamping part is locked, and the connection between the second control line and the second hook is released.

3. The clip device of claim 2, wherein The ratio of the axial length of the first hook and / or the second hook in the second state to the axial length of the first hook and / or the second hook in the first state ranges from 1.5 to 6.

4. The clip device of claim 1, wherein The distal end of the first control line comprises a first hooking structure, the first hooking structure being hooked to the first hook.

5. The clip device of claim 1, wherein When the force of the first control line on the first hook reaches a preset force value, the first hook changes from the first state to the second state; the preset force value ranges from 10 N to 200 N.

6. The clip device of claim 4, wherein, The one or more pulling parts comprise a pulling member, the pulling member comprising a support structure, the support structure comprising a through hole arranged along the axial direction of the sheath, and the first control line passes through the through hole to be releasably connected to the first hook.

7. The clip device of claim 6, wherein The plurality of clamping parts comprises a second clamping part, the second clamping part comprising a second hook arranged at the proximal end of the second clamping part; the pulling member further comprises a second hooking structure arranged at the distal end of the support structure, the distal end of the second hooking structure being hooked to the second hook.

8. The clip device of claim 7, wherein, The radial dimension of the first hooking structure is greater than the hole diameter of the through hole, and after the connection between the first control line and the first hook is released, the first hooking structure is clamped to the through hole.

9. The clip device of claim 8, wherein, The first hooking structure is clamped with the through hole, and then the first control line moves towards the proximal end to make the second hook change from the first state to the second state; after the second hook changes from the first state to the second state, the second clamping part is locked, and the connection between the pulling part and the second hook is released.

10. The clip device of claim 1, wherein A plurality of elastic grooves are formed in the distal end of the pipe wall of the clamping seat, and elastic sheets are formed between adjacent elastic grooves, the proximal end of the elastic sheet is connected with the pipe wall, and the distal end of the elastic sheet is a free end.

11. The clip device according to any one of claims 2-10, wherein, The plurality of clamping parts further comprises a third clamping part which is fixed relative to the clamping seat. After the first clamping part and / or the second clamping part are locked relative to the third clamping part, the clamping device is locked.

12. The clip device of claim 1, wherein, At least one of the plurality of clamping parts comprises a locked structure, the clamping device comprises a locking structure, and the movement of at least one of the plurality of clamping parts relative to the clamping seat from the distal end to the proximal end makes the locked structure move into the locking structure.

13. The clip device of claim 12, wherein, The plurality of clamping parts comprises a first clamping part and / or a second clamping part, the first clamping part and / or the second clamping part can rotate relative to the clamping seat under the drive of at least one of the one or more pulling parts, the locking structure is formed by the first clamping part and / or the second clamping part and the clamping seat, and the plurality of clamping parts further comprises a third clamping part which has an axial movement degree of freedom relative to the clamping seat, and the locked structure is arranged in the third clamping part.

14. The clip device of claim 13, wherein, The first clamping part and / or the second clamping part comprises a sliding groove, the clamping seat comprises a locking groove, and the sliding groove and the locking groove coincide to form the locking structure.

15. The clip device of claim 14, wherein, The one or more pulling parts comprises a third control line, the third control line is releasably connected with the third clamping part, the third clamping part comprises a pin shaft which forms the locked structure, and the third control line moves from the distal end to the proximal end to drive the pin shaft to move towards the locking groove.

16. The clip device of claim 1, wherein, The clamping device further comprises a control device, the control device is connected with the proximal end of at least one of the one or more pulling parts, and the control device controls the movement of the clamping part through at least one of the one or more pulling parts.

17. The clip device of claim 16, wherein, The one or more pulling parts comprises a first pulling part and a second pulling part, the first pulling part is releasably connected with at least one of the plurality of clamping parts which can rotate relative to the clamping seat, and the second pulling part is releasably connected with at least another one of the plurality of clamping parts which can rotate relative to the clamping seat; the control device controls the movement of the plurality of clamping parts which can rotate relative to the clamping seat through the first pulling part and the second pulling part respectively, or the control device controls the movement of the plurality of clamping parts which can rotate relative to the clamping seat through the first pulling part and the second pulling part simultaneously.

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