A clip device and method of controlling the same

Abstract

The embodiments of the present specification provide a clip device and a control method thereof. The clip device comprises a sheath tube, a clip arm and a locking member, the sheath tube comprises a channel, the clip arm comprises at least two clamping parts, the at least two clamping parts comprise a locked state, the locking member is used to limit the relative displacement of the at least two clamping parts in the locked state, and the locking member is released from the sheath tube together with the at least two clamping parts after locking the at least two clamping parts.

Description

Technical Field

[0001] This manual relates to the field of medical devices, and in particular to a clamp device and its control method. Background Technology

[0002] Endoscopic hemostatic clips are medical instruments used for hemostasis during endoscopic surgery. They are commonly used in surgeries involving internal organs such as the gastrointestinal tract and esophagus to control bleeding and maintain a clear surgical field. These clips play a crucial role in endoscopic surgery, helping to reduce surgical complications and improve the safety and effectiveness of the procedure. The design of endoscopic hemostatic clips needs to consider the special requirements of endoscopic surgery, allowing surgeons to operate precisely within confined surgical spaces; however, in actual clinical surgery, hemostatic clips pose risks such as damage to surrounding tissues and mispositioning of the wound. Summary of the Invention

[0003] This specification provides one or more embodiments of a clamping device, comprising: a sheath including a channel; a clamping arm including at least two clamping portions and at least two extension portions, the extension portions being releasably connected to the clamping portions; and a locking member releasably disposed within the channel of the sheath and located between the at least two extension portions, the locking member being used to cooperate with the at least two clamping portions to lock the at least two clamping portions.

[0004] This specification provides one or more embodiments of a clamping device, comprising: a sheath including a channel; a clamping arm including at least two clamping portions forming a clamping space between the at least two clamping portions, wherein a locking portion is provided on the side of the clamping portion facing the clamping space; and a locking member releasably disposed within the channel of the sheath, the locking member being used to cooperate with the locking portion to lock the at least two clamping portions.

[0005] This specification provides one or more embodiments of a clamping device, comprising: a sheath including a channel and a blocking structure; a clamping arm including at least two clamping portions; a locking member releasably disposed within the channel of the sheath via the blocking structure, the locking member being used to lock the at least two clamping portions; the clamping arm includes an operating state and a released state, in the operating state, the locking member cooperating with the blocking structure and located within the sheath channel, and in the released state, the clamping portions and the locking member disengaging from the blocking structure and located outside the sheath channel.

[0006] This specification provides one or more embodiments of a clamping device control method, the method being applied to the clamping device described in any of the above embodiments. The control method includes: controlling at least two clamping portions of a clamping arm to open; controlling the at least two clamping portions of the clamping arm to close; controlling the clamping arm to move from a distal end to a proximal end, wherein the at least two clamping portions cooperate with a locking member to lock the at least two clamping portions; wherein, when the clamping arm moves from a distal end to a proximal end, the at least two clamping portions actuate the locking member and the sheath to release; and controlling the at least two clamping portions and the locking member to release from the sheath.

[0007] According to the clamping device in the above embodiments, the locking member is located within the sheath channel, reducing the size of the locking member and the size of the locking member after engagement with the clamping part is also smaller. In some embodiments, by providing the extension and the locking member, the surgical field of vision is effectively improved, and the difficulty of the surgery is reduced. In some embodiments, the locked part is located on the side of the clamping part facing the clamping space, which does not occupy the space outside the clamping part, making the structure of the clamping part more compact and small after closure, thereby reducing the surgical field of vision obstructed by the clamping part. In some embodiments, the locking member and the sheath are engaged by a blocking structure, and when the clamping part performs opening or closing operations, the clamping part and the locking member do not contact each other, and the movement of the clamping part or other components (such as the extension) will not affect the connection stability of the locking member. Attached Figure Description

[0008] 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:

[0009] Figure 1 These are exemplary structural diagrams of clamping devices shown in some embodiments of this specification;

[0010] Figure 2 This is an exemplary structural block of a clamping device shown in some embodiments of this specification. Figure 1 ;

[0011] Figure 3 This is an exemplary structural block of a clamping device shown in some embodiments of this specification. Figure 2 ;

[0012] Figure 4 This is an exemplary structural block of a clamping device shown in some embodiments of this specification. Figure 3 ;

[0013] Figure 5 This is an exploded view of an exemplary structure of the clamping arm and conveying section according to some embodiments of this specification;

[0014] Figure 6This is a partial cross-sectional view of the clamping arm and conveying section shown in some embodiments of this specification;

[0015] Figure 7A These are exemplary structural diagrams of the clamping portion shown in some embodiments of this specification;

[0016] Figure 7B This is an exemplary side view of the clamping portion shown according to some embodiments of this specification;

[0017] Figure 7C These are exemplary structural diagrams of the clamping portion shown in other embodiments of this specification;

[0018] Figure 8A These are exemplary structural diagrams of the locking element shown in some embodiments of this specification;

[0019] Figure 8B This is a partial cross-sectional view of the locking element shown in some embodiments of this specification;

[0020] Figure 9A This is an exemplary structural diagram showing the cooperation between the locking member and the clamping part according to some embodiments of this specification;

[0021] Figure 9B This is a cross-sectional view of the locking member and clamping part cooperating according to some embodiments of this specification;

[0022] Figure 10 This is an exemplary structural diagram of the distal end of the sheath shown according to some embodiments of this specification;

[0023] Figure 11A This is an exemplary structural diagram showing the engagement of the locking element with the sheath according to some embodiments of this specification;

[0024] Figure 11B This is a cross-sectional view of the locking element and the sheath tube after being engaged, according to some embodiments shown in this specification;

[0025] Figure 12A This is an exemplary structure of the clamping arm locking process shown in some embodiments of this specification. Figure 1 ;

[0026] Figure 12B This is an exemplary structure of the clamping arm locking process shown in some embodiments of this specification. Figure 2 ;

[0027] Figure 12C This is an exemplary structure of the clamping arm locking process shown in some embodiments of this specification. Figure 3 ;

[0028] Figure 12DThis is an exemplary structure of the clamping arm locking process shown in some embodiments of this specification. Figure 4 ;

[0029] Figure 13 This is an exemplary structural diagram of the distal end of the sheath according to other embodiments of this specification;

[0030] Figure 14A This is an exemplary structural diagram showing the locking member engaging with the sheath according to other embodiments of this specification;

[0031] Figure 14B This is a cross-sectional view of the locking element engaging with the sheath, as shown in other embodiments of this specification;

[0032] Figure 15A This is an exemplary structure of the clamping arm locking process shown in other embodiments of this specification. Figure 1 ;

[0033] Figure 15B This is an exemplary structure of the clamping arm locking process shown in other embodiments of this specification. Figure 2 ;

[0034] Figure 15C This is an exemplary structure of the clamping arm locking process shown in other embodiments of this specification. Figure 3 ;

[0035] Figure 16 This is an exemplary structural diagram of the extension shown in some embodiments of this specification;

[0036] Figure 17A This is an exemplary structure showing the cooperation between the clamping part and the extension part according to some embodiments of this specification. Figure 1 ;

[0037] Figure 17B This is an exemplary structure showing the cooperation between the clamping part and the extension part according to some embodiments of this specification. Figure 2 The locked part is hidden;

[0038] Figure 17C This is an exemplary side view showing the clamping portion and extension portion engaging according to some embodiments of this specification;

[0039] Figure 18 This is an exemplary structural diagram of the first fitting of the sheath shown in some embodiments of this specification;

[0040] Figure 19 This is an exemplary structural diagram of the second fitting of the sheath shown in some embodiments of this specification;

[0041] Figure 20This is an exemplary structural diagram showing the cooperation of a first fitting, a second fitting, and a locking member according to some embodiments of this specification;

[0042] Figure 21 This is an exemplary structural diagram of the second fitting of the sheath shown in other embodiments of this specification;

[0043] Figure 22 This is an exemplary structural diagram showing the cooperation of the first fitting, the second fitting, and the locking member according to other embodiments of this specification;

[0044] Figure 23A This is an exemplary structure of a clamping device with its clamping arm in the open state, as shown in some embodiments of this specification. Figure 1 ;

[0045] Figure 23B This is an exemplary structure of a clamping device with its clamping arm in the open state, as shown in some embodiments of this specification. Figure 2 ;

[0046] Figure 24A This is an exemplary structural diagram of a clamping device with its clamping arm in a closed state, according to some embodiments of this specification;

[0047] Figure 24B This is a partial cross-sectional view of the clamping arm of the clamping device shown in some embodiments of this specification in a closed state;

[0048] Figure 25A This is an exemplary structural diagram illustrating the release of the locking element and sheath according to some embodiments of this specification;

[0049] Figure 25B This is a partial cross-sectional view of the locking element and sheath release as shown in some embodiments of this specification;

[0050] Figure 26A This is an exemplary structural diagram showing the clamping part in a pre-locked state according to some embodiments of this specification;

[0051] Figure 26B It is based on Figure 26A A partial enlarged view of the clamping portion in a pre-locked state as shown in some embodiments;

[0052] Figure 27A This is an exemplary structural diagram showing the clamping arm in a locked state according to some embodiments of this specification;

[0053] Figure 27B This is a partial cross-sectional view of the clamping arm in a locked state, as shown in some embodiments of this specification.

[0054] Figure 27C It is based on Figure 27BA partial enlarged view of the clamping arm in a locked state, as shown in some embodiments;

[0055] Figure 28A This is an exemplary structure for releasing the clamping part and locking member from the sheath according to some embodiments of this specification. Figure 1 ;

[0056] Figure 28B This is a partial cross-sectional view of the clamping and locking parts being released from the sheath according to some embodiments of this specification;

[0057] Figure 28C This is an exemplary structure for releasing the clamping part and locking member from the sheath according to some embodiments of this specification. Figure 1 ;

[0058] Figure 29 This is an exemplary flowchart of a control method for a clamping device according to some embodiments of this specification.

[0059] The attached figures are labeled as follows:

[0060] 10. Clamping device; 20. Clamping space.

[0061] 100. Clamping arm; 110. Clamping part; 110-1. First clamping part; 110-2. Second clamping part; 111. First connecting structure; 120. Extension part; 121. Triggering part; 122. Second connecting structure; 130. Locked part; 131. Fixing part; 132. Suspension structure; 133. First limiting structure; 134. Second limiting structure; 135. Actuating part.

[0062] 200. Conveying section; 210. Sheath tube; 211. Blocking structure; 211-1. First blocking structure; 211-2. Second blocking structure; 212. Contact section; 213. First fitting; 214. Second fitting; 215. Guide groove; 216. Guide slider; 220. Mandrel; 230. Fixed section; 240. Rotating section.

[0063] 300. Control unit; 310. Fixed handle; 320. Sliding handle.

[0064] 400, Locking element; 410, Receiving cavity; 411, Distal opening; 412, Side opening; 420, First stop structure; 430, Second stop structure; 440, Contact portion; 450, First mating portion; 460, Second mating portion. Detailed Implementation

[0065] 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.

[0066] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one way to distinguish different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0067] 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.

[0068] Flowcharts are used in this specification to illustrate the operations performed by the system according to embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0069] Clip instruments are common surgical instruments used in endoscopy. During surgery, clip instruments achieve hemostasis by clamping tissue wounds. Traditional clip instruments consist of a sheath, a clamping part, and a retractable tube. After the clamping part clamps the tissue, the clamping part closes and moves from distal to proximal until it enters the retractable tube and locks in place. The clamping part and the retractable tube are then released from the sheath and remain in the wound position.

[0070] Traditional clamping instruments, due to their long clamping parts and storage tubes, can obstruct the view around the wound in confined surgical spaces. This can lead to risks such as damage to surrounding tissues or incorrect clamping by the operator due to poor visibility. Especially when multiple clamping parts need to be released in a single surgery, the clamping parts and storage tubes can obstruct most of the field of vision, increasing the difficulty of the surgery.

[0071] In view of this, in some embodiments of this specification, it is desirable to provide a clamping device that reduces the size of the clamping parts remaining in the body by means of various methods such as setting a locking member between multiple clamping parts or reducing the length of the clamping parts, thereby reducing the field of vision obstructed by the clamping parts, enabling the operator to fully and clearly observe the surgical area, thereby avoiding risks such as damage to surrounding tissues and clamping errors, and improving surgical safety.

[0072] Figure 1 This is an exemplary structural diagram of the clamp device 10 shown according to some embodiments of this specification.

[0073] like Figure 1 As shown, in some embodiments, the clamping device 10 includes a clamping arm 100, a delivery section 200, and a control section 300. The control section 300 is disposed at the proximal end of the delivery section 200, and the clamping arm 100 is disposed at the distal end of the delivery section 200. The terms "proximal end" and "distal end" used in the embodiments of this specification can indicate direction, meaning that along the axial direction of the clamping device 10 (e.g., the extension direction of the sheath 210 of the delivery section 200 within the endoscope channel), the side facing the operator is "proximal end," and the side facing the insertion into the body for treatment is "distal end." "Proximal end" and "distal end" can also refer to portions of structures located in the corresponding directions and should not be construed as referring only to the ends.

[0074] In some applications, the delivery unit 200 has good maneuverability. The delivery unit 200 and its distal clamping arm 100 enter the human body through the endoscope's working channel to approach the tissue to be clamped. Here, tissue refers to the organ tissue of the human body or other organisms. The control unit 300 is located outside the human body or other organisms. The user controls the clamping arm 100 to perform surgical operations by manipulating the control unit 300. For example, the clamping arm 100 can clamp the wound of the tissue to keep the wound closed, thereby assisting wound healing.

[0075] In some embodiments, the delivery unit 200 includes a sheath 210 and a spindle 220. The spindle 220 is disposed within the channel of the sheath 210 and extends axially along the sheath 210. The proximal end of the spindle 220 is connected to the control unit 300, and the distal end of the spindle 220 is connected to the clamping arm 100. In the embodiments described herein, "axial" and "radial" can refer to directions. The "radial" direction is perpendicular to the "axial" direction, or the axial direction is the channel extension direction of the sheath 210, and the radial direction is perpendicular to the channel extension direction of the sheath 210.

[0076] In some embodiments, the sheath 210 may be flexible and bendable in any direction. In some embodiments, the control unit 300 consists of a fixed handle 310 and a sliding handle 320. The sliding handle 320 can slide axially relative to the fixed handle 310. The distal end of the sliding handle 320 is fixedly connected to the proximal end of the mandrel 220. The user controls the axial movement of the sliding handle 320 along the fixed handle 310 externally to control the axial movement of the mandrel 220 within the channel of the sheath 210, so that the clamp arm 100 can perform corresponding surgical operations, such as opening, closing, locking, and releasing.

[0077] This specification provides an exemplary clamping device 10 according to Embodiment 1. The following description, in conjunction with... Figures 2 to 17C The clamp device 10 of Embodiment 1 will be described.

[0078] Figure 2 This is an exemplary structural block diagram of the clamping device 10 shown in some embodiments of this specification.

[0079] like Figure 2 As shown, in some embodiments, the clamping device 10 includes a sheath 210, a clamping arm 100, and a locking member 400.

[0080] In some embodiments, the sheath 210 includes a channel. In some embodiments, the channel of the sheath 210 is used to accommodate control structures such as the spindle 220, and structures such as at least a portion of the clamping arm 100 (such as the extension 120) and the locking member 400.

[0081] In some embodiments, the clamping arm 100 includes at least two clamping portions 110 and at least two extension portions 120, wherein the extension portions 120 are releasably connected to the clamping portions 110. In this specification, "releasably connected" can mean that the two components remain connected when a preset condition is met (e.g., when the applied external force is less than a preset threshold), and release from each other and separate when the preset condition is not met (e.g., when the applied external force is greater than a preset threshold).

[0082] In some embodiments, the clamping portion 110 includes a first clamping portion 110-1 and a second clamping portion 110-2. When the clamping portion 110 is in the open state, the distal ends of the first clamping portion 110-1 and the second clamping portion 110-2 are separated. The extension portion 120 allows the proximal ends of the first clamping portion 110-1 and the second clamping portion 110-2 to also separate, thereby providing a sufficiently large span for the clamping portion 110 to clamp more tissue. When the clamping portion 110 is locked, the distal ends of the first clamping portion 110-1 and the second clamping portion 110-2 abut against each other (or abut against the clamped tissue) and close, and the proximal ends of the first clamping portion 110-1 and the second clamping portion 110-2 also abut against each other and close. In some embodiments, after the clamping portion 110 is locked, the extension portion 120 can be released from the clamping portion 110, and the extension portion 120 and the sheath 210 can be withdrawn from the endoscope channel, while the clamping portion 110 and the locking portion remain inside the body. The releasable connection between the clamping portion 110 and the extension portion 120 allows the non-tissue-contact extension portion 120 and the delivery portion 200 to be withdrawn from the body, while the smaller clamping portion 110 remains inside the body, reducing the size of the clamping portion 110 remaining inside the body and minimizing the surgical field of view obstructed by the clamping portion 110.

[0083] In some embodiments, a locking member 400 is releasably disposed within the channel of the sheath 210 and located between at least two extensions 120. The locking member 400 is configured to engage with at least two clamping portions 110 to lock the at least two clamping portions 110. In some embodiments, the locking member 400 is releasably engaged with the sheath 210, and upon being subjected to external force, the locking member 400 can be released from the sheath 210 and disengage from the channel of the sheath 210. In some embodiments, at least two passages are formed between the outer side of the locking member 400 and the inner wall of the channel of the sheath 210, each passage allowing the extensions 120 to extend from inside the channel of the sheath 210 to outside the channel of the sheath 210. By placing the locking element 400 within the channel of the sheath 210, the size of the locking element 400 is reduced, and the size of the locking element 400 after engaging with the clamping part 110 is also smaller. By providing the extension part 120 and the locking element 400, the retention length of the locking element 400 and the clamping part 110 can be reduced by 30% to 70% compared to the traditional clamping part 110, effectively improving the surgical field of vision and reducing the difficulty of the surgery. In addition, the locking element 400 is located inside the extension part 120, which solves the problem of the limited opening angle of the extension part 120. That is, the opening angle of the extension part 120 is not limited by the locking element 400, allowing the clamping part 110 to obtain a larger clamping space 20.

[0084] Figure 3 This is an exemplary structural block diagram of the clamping device 10 shown in other embodiments of this specification.

[0085] like Figure 3As shown, in some embodiments, the clamp device 10 includes a sheath 210, a clamp arm 100, and a locking member 400.

[0086] In some embodiments, the sheath 210 includes a channel. In some embodiments, the channel of the sheath 210 is used to accommodate control structures such as the spindle 220, and structures such as at least a portion of the clamping arm 100 and the locking member 400.

[0087] In some embodiments, the clamping arm 100 includes at least two clamping portions 110, forming a clamping space 20 between the at least two clamping portions 110, and a locking portion 130 is provided on the side of the clamping portion 110 facing the clamping space 20. In some embodiments, the clamping arm 100 includes an open state and a closed state. In the open state, the at least two clamping portions 110 are far apart from each other, allowing tissue to enter the clamping space 20. In the closed state, the at least two clamping portions 110 are close together, confining the tissue within the reduced clamping space 20, thereby closing the tissue wound.

[0088] In some embodiments, the locking member 400 is releasably disposed within the channel of the sheath 210, and the locking member 400 is used to cooperate with the locked portion 130 to lock at least two clamping portions 110. Since the locked portion 130 is disposed on the side of the clamping portion 110 facing the clamping space 20, that is, the locking member 400 locks the locked portion 130 inside the at least two clamping portions 110, without occupying the space outside the clamping portion 110, making the structure of the clamping portion 110 more compact and smaller after closure, thereby reducing the surgical field of view obstructed by the clamping portion 110.

[0089] Figure 4 This is an exemplary structural block diagram of the clamping device 10 according to some embodiments of this specification.

[0090] like Figure 4 As shown, in some embodiments, the clamp device 10 includes a sheath 210, a clamp arm 100, and a locking member 400.

[0091] In some embodiments, the sheath 210 includes a channel. In some embodiments, the channel of the sheath 210 is used to accommodate control structures such as the spindle 220, and structures such as at least a portion of the clamping arm 100 and the locking member 400.

[0092] In some embodiments, the clamping arm 100 includes at least two clamping portions 110. In some embodiments, a locking member 400 is used to lock the at least two clamping portions 110. The at least two clamping portions 110 clamp the tissue wound by opening, closing, or other operations.

[0093] In some embodiments, the sheath 210 includes a stop structure 211, through which the locking member 400 is releasably disposed within the channel of the sheath 210. In some embodiments, the stop structure 211 is capable of restricting the movement of the locking member 400 along the axial direction of the sheath 210, and the stop structure 211 is configured to fail to limit the movement of the locking member 400 from the proximal end to the distal end due to breakage, displacement, or deformation, thereby allowing the locking member 400 to be released from the sheath 210.

[0094] In some embodiments, the clamping arm 100 includes an operating state and a released state. In the operating state, the locking member 400 engages with the abutment structure 211 and is located within the sheath tube 210 channel. In the released state, the locking member 400 disengages from the abutment structure 211 and is located outside the sheath tube 210 channel. The operating state refers to a state in which the clamping arm 100 can be controlled by the spindle 220, including but not limited to the open, closed, and locked states of the clamping arm 100. The released state refers to a state in which the clamping part 110 and the locking member 400 are separated from the sheath tube 210 and become independent components.

[0095] By placing the locking element 400 within the channel of the sheath 210, the locking element 400 is made smaller, reducing the space it occupies and minimizing obstruction of the surgical field. The locking element 400 engages with the sheath 210 via the abutment structure 211. When the clamping part 110 performs opening or closing operations, the clamping part 110 does not contact the locking element 400, and the movement of the clamping part 110 or other components (such as the extension part 120) does not affect the connection stability of the locking element 400.

[0096] The following is combined Figures 5 to 17C Some exemplary structures of the clamp device 10 of Embodiment 1 are described in detail. It should be noted that those skilled in the art can make various combinations and modifications of the features in the various embodiments described below and above, guided by this specification, and these combinations and modifications are still within the scope of this specification. Furthermore, some embodiments described below are merely illustrative and do not limit the scope of this specification.

[0097] Figure 5 This is an exploded view of an exemplary structure of the clamping arm 100 and the conveying unit 200 according to some embodiments of this specification. Figure 6 This is a partial cross-sectional view of the clamping arm 100 and the conveying section 200 shown in some embodiments of this specification.

[0098] like Figure 5 and Figure 6As shown, the clamping arm 100 includes a sheath 210, at least two clamping portions 110, at least two extensions 120, and a locking member 400. In some embodiments, the locking member 400 is releasably disposed within a channel of the sheath 210. In some embodiments, the clamping portions 110 and the extensions 120 are releasably connected. In some embodiments, the clamping portions 110 and the extensions 120 are integrally formed.

[0099] In some embodiments, the clamping arm 100 is in an open state, at least two clamping portions 110 are spaced apart from each other, and the distal end of the extension 120 extends outside the channel of the sheath 210, such that the clamping portion 110 is located outside the channel of the sheath 210. The locking member 400 is located between the at least two extensions 120, and the locking member is releasably engaged with the sheath 210 by the abutment structure 211.

[0100] In some embodiments, the clamping arm 100 is in a closed state, at least two clamping portions 110 are close to each other and in contact with the locking member 400, the extension 120 is retracted into the sheath tube 210 channel, and at least two clamping portions 110 remain outside the sheath tube 210 channel. During the operation of clamping the tissue with the clamping portions 110, the clamping portions 110 are always located outside the sheath tube 210 channel, which can prevent the distal end of the sheath tube 210 from contacting the tissue, thereby improving the clamping stability of the tissue within the clamping space 20.

[0101] In some embodiments, the clamping arm 100 is in a locked state, with at least two clamping portions 110 cooperating with the locking member 400. For example, the proximal end or locked portion 130 of the clamping portion 110 forms a limiting engagement with the locking member 400, thereby locking the at least two clamping portions 110. After the at least two clamping portions 110 are closed, the locking member 400 is released from the sheath 210, allowing the locking member 400 to disengage from the distal end of the sheath 210. In some embodiments, when the clamping arm 100 is in the locked state, the locking member 400 is located between the at least two clamping portions 110, thus eliminating the need for the locking member 400 to occupy space outside the clamping portions 110 and reducing the obstruction of the surgical field by the clamping portions 110.

[0102] In some embodiments, the clamping arm 100 is in a released state, and after the locking member 400 locks at least two clamping parts 110, the whole is released from the distal end of the sheath 210 and remains at the tissue wound, while the sheath 210 and other components are withdrawn from the human body.

[0103] In some embodiments, the sheath 210 includes a fixed section 230 and a rotating section 240, the proximal end of the rotating section 240 being rotatably connected to the distal end of the fixed section 230, and the rotating section 240 being configured to rotate about the axis of the sheath 210. In some embodiments, one of the rotating section 240 and the fixed section 230 is provided with an annular groove, and the other is provided with a slider, the annular slider and the annular groove being slidably engaged, allowing the rotating section 240 to rotate relative to the fixed section 230. In some embodiments, the annular groove extends along the circumferential direction of the sheath 210, and the annular slider is embedded in the annular groove to limit the axial displacement of the rotating section 240 and the fixed section 230 relative to the sheath 210. In some embodiments, an operating handle controls the rotation of the spindle 220, and the rotation of the spindle 220 causes the clamping arm 100 and the rotating section 240 to rotate simultaneously relative to the fixed section 230. By setting the rotating section 240 so that the clamping arm 100 can rotate around the axis of the sheath tube 210, it is easier to adjust the closing direction of at least two clamping parts 110 to be consistent with the closing direction of the tissue wound, thereby improving the accuracy of clamping the tissue wound.

[0104] In some embodiments, the sheath 210 is a one-piece molded structure, which facilitates processing and saves costs.

[0105] Figure 7A This is an exemplary structural diagram of the clamping part 110 shown according to some embodiments of this specification. Figure 7B This is an exemplary side view of the clamping part 110 shown according to some embodiments of this specification. Figure 7C This is an exemplary structural diagram of the clamping part 110 shown according to other embodiments of this specification. Figure 8A This is an exemplary structural diagram of the locking member 400 shown according to some embodiments of this specification. Figure 8B This is a partial cross-sectional view of the locking member 400 shown in some embodiments according to this specification. Figure 9A This is an exemplary structural diagram showing the locking member 400 locking with the clamping part 110 according to some embodiments of this specification. Figure 9B This is a cross-sectional view showing the locking member 400 locked with the clamping part 110 according to some embodiments of this specification.

[0106] like Figures 7A to 9B As shown, in some embodiments, the clamping portion 110 includes a locked portion 130, and the locking member 400 is used to engage with the locked portion 130. In some embodiments, the locking member 400 includes a receiving cavity 410 for receiving at least two locked portions 130 of the clamping portions 110, thereby keeping the locked portions 130 of the at least two clamping portions 110 in a closed state. In some embodiments, the receiving cavity 410 is located at the distal end of the locking member 400 and has a distal opening 411, and when the locked portion 130 moves from the distal end to the proximal end, it enters the receiving cavity 410 through the distal opening 411.

[0107] In some embodiments, the locked portion 130 includes a fixing portion 131 and a suspension structure 132. The suspension structure 132 is arranged with a gap between the fixing portion 131 and the clamping portion 110. When the clamping arm 100 is locked, the suspension structure 132 is located within the receiving cavity 410. One side of the fixing portion 131 is connected to the side edge of the clamping portion 110, and the other side is connected to the suspension structure 132, so that the suspension structure 132 and the clamping portion 110 maintain a gap. In some embodiments, the receiving cavity 410 of the locking member 400 has side openings 412 on both sides. When the locked part 130 is engaged with the locking member 400, the side openings 412 of the receiving cavity 410 avoid the fixing part 131, so that the suspension structure 132 of the locked part 130 can be located in the receiving cavity 410, and the distal part of the locking member 400 is located in the gap between the suspension structure 132 and the clamping part 110. In this way, the locking member 400 can lock the locked part 130 between at least two clamping parts 110 without occupying the outer space of the clamping part 110.

[0108] In some embodiments, the receiving cavity 410 of the locking member 400 is configured such that the suspension structure 132 of the locked portion 130 of at least two clamping portions 110 can remain in a mutually fitted state, so that at least two clamping portions 110 remain in a stable locked state.

[0109] In some embodiments, the locked portion 130 includes a first limiting structure 133, and the locking member 400 includes a first stop structure 420. The first limiting structure 133 and the first stop structure 420 cooperate to limit the relative movement of the clamping portion 110 and the locking member 400 in a first direction. The first direction includes the... Figure 9A The direction indicated by the middle arrow D1 is, for example, the width direction of the clamping part 110. By restricting the relative movement of the clamping part 110 and the locking member 400 in the first direction, at least two clamping parts 110 can remain relatively stationary in the first direction, so that at least two clamping parts 110 will not rotate relative to each other.

[0110] In some embodiments, the first limiting structure 133 includes a limiting pin, and the first stop structure 420 includes a stop groove, wherein the limiting pin is configured to engage with the stop groove. In some embodiments, the limiting pin protrudes from the proximal end of the suspension structure 132, and the stop groove is recessed from the bottom wall of the proximal end of the receiving cavity 410. After the limiting pin is inserted into the stop groove, the stop groove can limit the circumferential movement of the limiting pin.

[0111] In some embodiments, the locked portion 130 includes a second limiting structure 134, and the locking member 400 includes a second stop structure 430. The second limiting structure 134 and the second stop structure 430 cooperate to limit the relative movement of the clamping portion 110 and the locking member 400 in a second direction. The second direction is not parallel to the first direction. For example, the second direction includes the direction indicated by arrow D2 in the figures, such as the length direction of the clamping portion 110. By limiting the relative movement of the clamping portion 110 and the locking member 400 in the second direction, at least two clamping portions 110 can remain relatively stationary in the second direction. The locking member 400 locks the clamping portion 110 in multiple directions through multiple stop structures, improving the stability of the clamping portion 110 in holding the tissue.

[0112] In some embodiments, the second limiting structure 134 includes a locking spring, and the second stopping structure 430 includes at least two locking recesses. The locking spring is configured to spring into the locking recess when aligned with it. In some embodiments, the locking spring is disposed on the suspension structure 132, and the proximal end of the locking spring is connected to the suspension structure 132. The distal end includes a bent portion that bends from the suspension structure 132 toward the clamping portion 110. The locking recess is disposed on the sidewall of the receiving cavity 410. When the locking spring moves from the distal end to the proximal end, the bent portion of the locking spring springs into the locking recess to form a limit.

[0113] In some embodiments, the locking member 400 includes a contact portion 440 located at the distal end of the second stop structure 430, the contact portion 440 being used to provide feedback resistance to prompt the operator to enter the locked state. In some embodiments, the distal end face of the locking member 400 is configured as the contact portion 440.

[0114] In some embodiments, the clamping arm 100 includes a pre-locked state and a final locked state.

[0115] In the pre-locked state, the second limiting structure 134 of the locked portion 130 abuts against the contact portion 440 of the locking member 400, generating feedback resistance that prevents the clamping portion 110 from moving from the distal end to the proximal end. In some embodiments, the second limiting structure 134 includes a locking spring, the distal bent portion of which abuts against the contact portion 440 of the locking member 400 before entering the receiving cavity 410. The contact portion 440 then generates feedback resistance against the locking spring, which is fed back to the operator through the spindle 220, indicating to the operator that the clamping portion 110 is about to enter the locked state. In some embodiments, after feeling feedback resistance, the operator can reconfirm the clamping position of the clamping part 110 on the tissue. If the clamping part 110 does not clamp the tissue properly, the mandrel 220 is pushed from the proximal end to the distal end, causing the clamping part 110 to change from a closed state to an open state, thus re-clamping the tissue. If the clamping part 110 clamps the tissue properly, the mandrel 220 is pulled from the distal end to the proximal end, causing the locking spring to deform under force. The bent portion passes over the contact part 440 and enters the receiving cavity 410 to engage with the locking recess, and the clamping part 110 enters the final locked state. By setting the contact part 440 and the second stop structure 430 to form feedback resistance, the operator can be prompted to confirm the tissue clamping position before locking, reducing surgical errors.

[0116] In the final locked state, the second limiting structure 134 passes over the contact portion 440 and engages with the second stop structure 430, the first limiting structure 133 engages with the first stop structure 420, and at least two clamping portions 110 are locked.

[0117] Figure 10 This is an exemplary structural diagram of the distal end of the sheath 210 according to some embodiments of this specification. Figure 11A This is an exemplary structural diagram showing the engagement of the locking member 400 with the sheath tube 210 according to some embodiments of this specification. Figure 11B This is a cross-sectional view of the locking member 400 and the sheath tube 210 after being engaged according to some embodiments of this specification.

[0118] like Figure 8A , Figure 8B , Figures 10 to 11B As shown, in some embodiments, the sheath 210 or the rotating section 240 of the sheath 210 is a one-piece structure, which simplifies the manufacturing process. In some embodiments, the sheath 210 includes at least one abutment structure 211 for limiting the locking member 400 within the channel of the sheath 210.

[0119] In some embodiments, the sheath 210 includes a first abutment structure 211-1, and the locking member 400 includes a first mating portion 450. The first abutment structure 211-1 and the first mating portion 450 cooperate to restrict the movement of the locking member 400 relative to the sheath 210 from the distal end to the proximal end, so that the locking member 400 can be held in a desired position, such as the distal end of the sheath 210.

[0120] In some embodiments, the first abutment structure 211-1 includes a stop step that protrudes radially inward, and the proximal surface of the locking member 400 forms a first mating portion 450, which abuts against the stop step. In some embodiments, the stop step includes, but is not limited to, at least two protrusions, a stop bar arranged radially along the sheath 210, etc.

[0121] In some embodiments, the sheath 210 includes a second abutment structure 211-2, and the locking member 400 includes a second mating portion 460. The second abutment structure 211-2 and the second mating portion 460 are releasably connected to restrict the movement of the locking member 400 relative to the sheath 210 from the proximal end to the distal end. When the locking member 400 locks at least two clamping portions 110, the second abutment structure 211-2 separates from the second mating portion 460, and the locking member 400 is released from the sheath 210.

[0122] In some embodiments, the second abutment structure 211-2 includes a limiting spring, the distal end of which is connected to the inner wall of the sheath 210, and the proximal end which protrudes radially inward from the inner wall of the sheath 210. The locking member 400 includes a limiting surface facing the distal end, which is used to engage with the limiting spring. In some embodiments, the limiting surface of the locking member 400 includes the bottom surface of the receiving cavity 410, and the limiting spring is arranged corresponding to the side opening 412 of the receiving cavity 410 of the locking member 400, so that the limiting spring can engage with the bottom surface of the receiving cavity 410. In some embodiments, the limiting surface of the locking member 400 includes the surface of the distal end of the locking member 400.

[0123] Combination Figure 7A , Figure 7C As shown, in some embodiments, the clamping arm 100 includes an actuation part 135, which is configured to actuate the second blocking structure 211-2 and the second mating part 460 to release when moving from the distal end to the proximal end, thereby releasing the locking member 400 from the sheath 210. The actuation part 135 refers to a component or part that can directly or indirectly cause the second blocking structure 211-2 and the second mating part 460 to release. By providing the actuation part 135 to actuate the locking member 400 from the sheath 210, disturbances to the locking member 400 by other components or parts during movement can be avoided, reducing the risk of accidental release of the locking member 400.

[0124] In some embodiments, an actuating portion 135 is disposed on the locked portion 130. For example, the actuating portion 135 is disposed on the suspension structure 132 of the locked portion 130, and the actuating portion 135 includes at least one edge portion of the suspension structure 132. In some embodiments, one edge of the suspension structure 132 constitutes the actuating portion 135. In some embodiments, both edges of the suspension structure 132 constitute the actuating portion 135.

[0125] In some embodiments, as the locked portion 130 of the clamping portion 110 enters the locking member 400, the actuating portion 135 pushes the limiting spring from the distal end to the proximal end, causing the limiting spring to deform, displace, or break and release from the limiting surface, thus releasing the locking member 400 from the sheath 210. In some embodiments, the proximal end of the limiting spring engages with the limiting surface. After the suspension structure 132 of the locking portion enters the receiving cavity 410, the actuating portion 135 pushes the limiting spring to deform radially outward or displace relative to the sheath 210, thus releasing the limiting spring from the limiting surface.

[0126] In some embodiments, after the proximal end of the limiting spring plate engages with the limiting surface, in the radial direction of the sheath tube 210, the distance between the first limiting structure 133 and the actuating part 135 is greater than the distance between the first stop structure 420 and the limiting spring plate. After the actuating part 135 enters the locking member 400, it can push the limiting spring plate outward along the radial direction of the sheath tube 210, so that the limiting spring plate disengages from the limiting surface.

[0127] In some embodiments, when the first limiting structure 133 and the first stop structure 420 of the clamping part 110 cooperate, and the second limiting structure 134 and the second stop structure 430 cooperate, the clamping part 110 is locked to the locking member 400; after the actuating part 135 of the clamping part 110 pushes the limiting spring to release from the limiting surface, the locking member 400 is released from the sheath 210. In some embodiments, when the first limiting structure 133 and the first stop structure 420 cooperate, and the second limiting structure 134 and the second stop structure 430 cooperate, and the actuating part 135 pushes the limiting spring to release from the limiting surface, the locking member 400 is locked to the clamping part 110 and released from the sheath 210. In some embodiments, after the actuating part 135 pushes the limiting spring to release from the limiting surface, the first limiting structure 133 and the first stop structure 420 cooperate, and the second limiting structure 134 and the second stop structure 430 cooperate, then the locking member 400 is first released from the sheath 210 and then locked to the clamping part 110.

[0128] Figures 12A to 12D This is an exemplary structural diagram illustrating the locking process of the clamping arm 100 according to some embodiments of this specification. In this process, the locking member 400 locks with the clamping part 110 while simultaneously releasing from the sheath tube 210.

[0129] In some embodiments, the second abutment structure 211-2 of the sheath 210 includes a limiting spring, which is constructed in a straight line and extends inwardly at an angle from the distal end to the proximal end of the sheath 210.

[0130] like Figure 12A and Figure 12B As shown, the clamping arm 100 is in a pre-locked state, the second limiting structure 134 of the locked part 130 abuts against the contact part 440, the actuating part 135 of the clamping part 110 is located at the distal end of the second blocking structure 211-2 of the sheath tube 210, and the proximal end of the second blocking structure 211-2 cooperates with the second mating part 460 of the locking member 400.

[0131] like Figure 12C and Figure 12D As shown, the clamping part 110 moves from the distal end to the proximal end, the clamping arm 100 switches from the pre-locked state to the locked state, the first limiting structure 133 of the locked part 130 cooperates with the first stop structure 420 of the locking member 400, and the second limiting structure 134 of the locked part 130 cooperates with the second stop structure 430 of the locking member 400. At the same time, the actuating part 135 of the clamping part 110 moves to the proximal end of the second blocking structure 211-2 of the sheath tube 210 and opens the proximal end of the second blocking structure 211-2 to release it from the second cooperating part 460 of the locking member 400. The locking member 400 and the sheath tube 210 are released.

[0132] Figure 13 This is an exemplary structural diagram of the distal end of the sheath 210 according to other embodiments of this specification. Figure 14A This is an exemplary structural diagram showing the engagement of the locking member 400 with the sheath tube 210 according to other embodiments of this specification. Figure 14B This is a cross-sectional view of the locking member 400 engaging with the sheath tube 210, as shown in some other embodiments of this specification.

[0133] like Figures 13 to 14B As shown, in some embodiments, the second abutment structure 211-2 of the sheath 210 includes a limiting spring, which is configured as a zigzag shape, comprising an inclined section and a straight section. The proximal end of the inclined section is connected to the distal end of the straight section, wherein the connection between the inclined section and the straight section is configured as a bend. In some embodiments, the inclined section extends inwardly at an angle from the distal end to the proximal end of the sheath 210, and the straight section is arranged parallel to the axis of the sheath 210. The proximal end of the straight section is used to engage with the second mating portion 460 of the locking member 400.

[0134] Figures 15A to 15C This is an exemplary structural diagram illustrating the locking process of the clamp arm 100 according to other embodiments of this specification. In this process, the locking member 400 releases from the sheath tube 210 and then locks with the clamping part 110.

[0135] like Figure 15A As shown, the clamping arm 100 is in a pre-locked state, the second limiting structure 134 of the locked part 130 abuts against the contact part 440, the actuating part 135 of the clamping part 110 moves to the distal end of the second blocking structure 211-2 of the sheath tube 210, and the proximal end of the second blocking structure 211-2 engages with the second mating part 460 of the locking member 400.

[0136] like Figure 15B As shown, the clamping part 110 moves from the distal end to the proximal end, releasing the locking member 400 from the sheath 210. After the actuating part 135 moves from the distal end to the proximal end, it compresses the bending point of the second blocking structure 211-2, causing the straight section of the second blocking structure 211-2 to deform or displace radially outward along the sheath 210, releasing the proximal end of the second blocking structure 211-2 from the second mating part 460 of the locking member 400, and releasing the locking member 400 from the sheath 210. At this time, the first limiting structure 133 of the locked part 130 and the first stop structure 420 of the locking member 400 have not yet engaged, and the second limiting structure 134 of the locked part 130 and the second stop structure 430 of the locking member 400 have not yet engaged.

[0137] like Figure 15C As shown, the clamping part 110 continues to move from the distal end to the proximal end, and the clamping arm 100 switches from the pre-locked state to the locked state. The first limiting structure 133 of the locked part 130 cooperates with the first stop structure 420 of the locking member 400, and the second limiting structure 134 of the locked part 130 cooperates with the second stop structure 430 of the locking member 400, thus locking the clamping part 110 and the locking member 400.

[0138] In some embodiments, the locking member 400 first locks with the clamping portion 110 and then releases from the sheath 210. In some embodiments, the second mating portion 460 of the locking member 400 includes a limiting recess disposed on the side of the locking member 400 facing the extension portion 120. The second abutting structure 211-2 of the sheath 210 includes a resilient pin disposed on the side wall of the sheath 210 near the extension portion 120. An axially extending clearance groove is formed on the extension portion 120 to avoid the resilient pin. The resilient pin passes through the clearance groove of the extension portion 120 and engages with the limiting recess of the locking member 400, so that the locking member 400 is releasably connected to the sheath 210. After the locking member 400 is locked to the clamping part 110, the extension part 120 continues to move from the distal end to the proximal end, causing the end of the clearance groove of the extension part 120 to actuate the elastic pin. The elastic pin deforms, displaces, or breaks and releases from the limiting recess. At this time, the locking member 400 and the sheath 210 are released.

[0139] Figure 16 This is an exemplary structural diagram of the extension 120 shown according to some embodiments of this specification. Figure 17AThis is an exemplary structure showing the cooperation between the clamping portion 110 and the extension portion 120 according to some embodiments of this specification. Figure 1 . Figure 17B This is an exemplary structure showing the cooperation between the clamping portion 110 and the extension portion 120 according to some embodiments of this specification. Figure 2 Among them, the locked part 130 is hidden. Figure 17C This is an exemplary side view of the clamping portion 110 and the extension portion 120 cooperating according to some embodiments of this specification.

[0140] In some embodiments, the extension 120 or clamping portion 110 includes a trigger portion 121, which is configured to trigger the release of the extension 120 and clamping portion 110 when subjected to a force in a first direction greater than a preset force value; wherein the first direction is not parallel to the movement direction of the extension 120, and the first direction is the direction indicated by arrow D1 in the figures. In some embodiments, the first direction may include the width direction of the clamping portion 110. In other embodiments, the first direction may also include a direction at an angle to the width direction of the clamping portion 110. During the process of the extension 120 moving the clamping part 110 from the distal end to the proximal end, when the clamping part 110 is locked and the locking member 400 is released from the sheath 210, a pulling force is generated between the extension 120 and the clamping part 110 along the movement direction of the extension 120. By providing the trigger part 121, the extension 120 can only be released from the clamping part 110 when triggered by the trigger part 121, which can avoid accidental dislodgement of the two due to the pulling force between the extension 120 and the clamping part 110 along the movement direction, and reduce surgical risks.

[0141] In some embodiments, a clamping space 20 is formed between at least two clamping portions 110. A first connecting structure 111 is provided on the side of the clamping portion 110 facing the clamping space 20, and a second connecting structure 122 is provided at the distal end of the extension portion 120. The first connecting structure 111 and the second connecting structure 122 are releasably connected. In some embodiments, the first connecting structure 111 includes, but is not limited to, a slot, a limiting protrusion, a buckle, or other structures protruding from the clamping portion 110 into the clamping space 20; the second connecting structure 122 includes, but is not limited to, a hook, an elastic limiting arm, or other structures. In some embodiments, the first connecting structure 111 is disposed in the gap between the suspension structure 132 of the locked portion 130 and the clamping portion 110, making the structure of the clamping portion 110 more compact and facilitating miniaturization of the clamping portion 110.

[0142] In some embodiments, the second connecting structure 122 includes two elastic arms, each elastic arm including a distal end, a middle portion, and a proximal end, the middle portion of the elastic arm being configured as a groove. The first connecting structure 111 includes a latch, the latch being configured as a U-shaped structure protruding toward the clamping space 20. The two elastic arms pass through the latch, causing the latch to engage within the groove of the middle portion, the distal end and the proximal end respectively limiting the latch, thereby connecting the clamping portion 110 to the extension portion 120.

[0143] In some embodiments, the inner side surface of the distal end of the groove is fitted and limited against the distal surface of the buckle, and both the inner side surface of the distal end of the groove and the distal surface of the buckle are perpendicular to the axial direction of the extension 120. The axial direction of the extension 120 may be an auxiliary axial direction. Figure 17B The direction indicated by the middle arrow D2. When the extension 120 moves from the distal end to the proximal end, the inner side of the distal end of the groove forms a limit with the distal surface of the buckle, keeping the clamping part 110 and the extension 120 connected, and preventing the clamping part 110 and the extension 120 from being accidentally separated due to being pulled apart by axial force.

[0144] In some embodiments, the inner side surface of the proximal end of the groove is fitted and limited to the proximal surface of the buckle, and both the inner side surface of the proximal end of the groove and the proximal surface of the buckle are perpendicular to the axial direction of the extension 120. The axial direction of the extension 120 may be an adjacent... Figure 17B The direction indicated by the middle arrow D2. When the extension 120 moves from the proximal end to the distal end, the inner side of the proximal end of the groove forms a limit with the proximal surface of the buckle, keeping the clamping part 110 and the extension 120 connected, and preventing accidental separation when the clamping part 110 and the extension 120 are pulled together by axial force.

[0145] In some embodiments, the trigger portion 121 is disposed on the first connecting structure 111 or the second connecting structure 122, and the distal end of the sheath 210 includes an abutment portion 212, which is used to drive the trigger portion 121, causing one of the first connecting structure 111 and the second connecting structure 122 to break, deform, or displace and release from the other. In some embodiments, the trigger portion 121 includes a slope disposed at the proximal end of the elastic arm, which is configured to abut against the abutment portion 212. The force applied by the abutment portion 212 to the slope can cause the two elastic arms to deform and move closer to each other, causing the buckle to disengage from the groove of the elastic arm, and the extension portion 120 to release from the clamping portion 110. In some embodiments, the abutment portion 212 includes, but is not limited to, the end face of the distal end of the sheath 210 or a protrusion disposed at the distal end of the sheath 210.

[0146] This specification provides an exemplary clamping device 10 according to Embodiment 2. The following description, in conjunction with... Figures 18 to 22The clamp device 10 of Embodiment 2 will be described. In the following description, only the parts of the clamp device 10 of Embodiment 2 that differ from those of the clamp device 10 of Embodiment 1 will be described, and the rest of the parts not mentioned will refer to the exemplary embodiment of the clamp device 10 of Embodiment 1.

[0147] Figure 18 This is an exemplary structural diagram of the first fitting 213 of the sheath 210 shown in some embodiments of this specification. Figure 19 This is an exemplary structural diagram of the second fitting 214 of the sheath 210 shown in some embodiments of this specification. Figure 20 This is an exemplary structural diagram showing the cooperation of the first fitting 213, the second fitting 214, and the locking member 400 according to some embodiments of this specification.

[0148] like Figures 18 to 20 As shown, in some embodiments, the sheath 210 or the rotating section 240 of the sheath 210 is a split-form structure. In some embodiments, the sheath 210 includes at least one abutment structure 211 for limiting the locking member 400 within the channel of the sheath 210.

[0149] In some embodiments, the sheath 210 includes a first fitting 213 and a second fitting 214, the first fitting 213 being axially movable and engaging with the second fitting 214. In some embodiments, one of the first fitting 213 and the second fitting 214 includes a guide groove 215 extending axially, and the other includes a guide slider 216, the guide slider 216 being slidably engaged with the guide groove 215 to limit the circumferential displacement between the first fitting 213 and the second fitting 214, preventing relative rotation of the first fitting 213 and the second fitting 214 from affecting their internal structure. Furthermore, the guide groove 215 limits the stroke range of the guide slider 216, that is, the axial movement range of the first fitting 213 and the second fitting 214 is limited to a reasonable range, preventing the first fitting 213 and the second fitting 214 from disengaging from each other.

[0150] In some embodiments, the first pipe fitting 213 is disposed near the proximal end of the second pipe fitting 214, and the outer diameter of the first pipe fitting 213 is equal to the inner diameter of the second pipe fitting 214, so that the second pipe fitting 214 is sleeved on the outside of the first pipe fitting 213. When the second pipe fitting 214 moves axially relative to the first pipe fitting 213, the second pipe fitting 214 will not interfere with the components (such as the locking member 400, the extension 120, etc.) inside the first pipe fitting 213. In some embodiments, the first pipe fitting 213 and the second pipe fitting 214 are kept relatively stationary by static friction. When the axial external force is greater than the static friction, the first pipe fitting 213 and the second pipe fitting 214 will undergo relative displacement.

[0151] Combination Figure 8A and Figure 8BAs shown, in some embodiments, the sheath 210 includes a first abutment structure 211-1, and the locking member 400 includes a first mating portion 450. The first abutment structure 211-1 and the first mating portion 450 cooperate to restrict the movement of the locking member 400 relative to the sheath 210 from the distal end to the proximal end, so that the locking member 400 can be held in a desired position, such as the distal end of the sheath 210.

[0152] In some embodiments, a first abutment structure 211-1 is disposed on the inner side of the first tube 213. The first abutment structure 211-1 includes a stop step that protrudes radially inward, and the proximal surface of the locking member 400 forms a first mating portion 450, which abuts against the stop step. In some embodiments, the stop step includes, but is not limited to, at least two protrusions, a stop bar arranged radially along the sheath 210, etc.

[0153] In some embodiments, the sheath 210 includes a second abutment structure 211-2, and the locking member 400 includes a second mating portion 460. The second abutment structure 211-2 and the second mating portion 460 are releasably connected to restrict the movement of the locking member 400 relative to the sheath 210 from the proximal end to the distal end, so that the locking member 400 can be released from the sheath 210 after locking at least two clamping portions 110.

[0154] In some embodiments, the second abutment structure 211-2 is disposed on the second pipe fitting 214. In some embodiments, the second abutment structure 211-2 includes a limiting piece, the proximal end of which is connected to the second pipe fitting 214, and the distal end which protrudes radially inward from the inner wall of the second pipe fitting 214. The second mating portion 460 of the locking member 400 includes a limiting surface facing the distal end, the limiting surface being used to mate with the limiting piece.

[0155] In some embodiments, the actuating part 135 is configured to actuate the second tube 214 relative to the first tube 213 from distal to proximal, causing the second abutting structure 211-2 to deform, displace, or break and release from the second mating part 460. In some embodiments, the actuating part 135 includes a proximal surface of the clamping part 110. When the extension 120 drives the clamping part 110 to move from distal to proximal, the proximal end of the clamping part 110 abuts against the surface of the distal end of the second tube 214 and pushes the second tube 214 relative to the first tube 213 from distal to proximal. The limiting piece has a tendency to move proximal to the locking member 400, causing the limiting piece to deform, displace, or break under force and release from the limiting surface of the locking member 400. At this time, the locking member 400 and the sheath 210 are released.

[0156] In some embodiments, the distance between the second abutment structure 211-2 and the distal end of the second tube 214 is configured such that the locking member 400 is locked to the clamping portion 110 while the locking member 400 is released from the second tube 214. For example, when the second tube 214 is connected to the locking member 400, the distal end of the locking member 400 can be exposed at the distal end of the second tube 214. When the locked part 130 contacts the locking member 400, the actuating part 135 of the clamping part 110 contacts the distal end of the second tube 214. As the clamping part 110 continues to move from the distal end to the proximal end, the first limiting structure 133 of the locked part 130 engages with the first stop structure 420 of the locking member 400, and the second limiting structure 134 of the locked part 130 engages with the second stop structure 430 of the locking member 400. The clamping part 110 and the locking member 400 are locked. At the same time, the actuating part 135 drives the second tube 214 to move from the distal end to the proximal end, causing the second blocking structure 211-2 to separate from the second engaging part 460 of the locking member 400, and the locking member 400 and the sheath 210 are released.

[0157] Figure 21 This is an exemplary structural diagram of the second fitting 214 of the sheath 210 according to other embodiments of this specification. Figure 22 This is an exemplary structural diagram showing the cooperation of the first fitting 213, the second fitting 214, and the locking member 400 according to other embodiments of this specification.

[0158] like Figure 18 , Figure 21 and Figure 22 As shown, in some embodiments, the distance between the second abutment structure 211-2 and the distal end of the second tube 214 is configured such that after the locking member 400 is released from the second tube 214, the locking member 400 locks with the clamping part 110. For example, when the second tube 214 is connected to the locking member 400, the locking member 400 is entirely housed inside the second tube 214. When the clamping part 110 is closed, the actuating part 135 of the clamping part 110 first contacts the distal end of the second tube 214, and the actuating part 135 drives the second tube 214 to move from the distal end to the proximal end, causing the second abutment structure 211-2 to separate from the second mating part 460 of the locking member 400, and the locking member 400 to be released from the sheath 210. The clamping part 110 continues to move from the distal end to the proximal end, so that the first limiting structure 133 of the locked part 130 cooperates with the first stop structure 420 of the locking member 400, and the second limiting structure 134 of the locked part 130 cooperates with the second stop structure 430 of the locking member 400, thereby locking the clamping part 110 and the locking member 400.

[0159] Figures 23A to 28CThis is an exemplary structural diagram illustrating the operation process of the clamp device 10 according to some embodiments of this specification. This operation process can be applied to any of the clamp device 10 of Embodiment 1 and Embodiment 2.

[0160] like Figure 23A and Figure 23B As shown, the clamping arm 100 is in the open state. In some embodiments, the operating unit controls the mandrel 220 to move from the proximal end to the distal end, and the mandrel 220 drives the extension 120 and the clamping part 110 to move from the proximal end to the distal end, so that the distal end of the extension 120 extends out of the sheath 210 channel, at least two clamping parts 110 are far apart from each other and are in an open state, and a clamping space 20 for clamping tissue is formed between the at least two clamping parts 110.

[0161] like Figure 24A and Figure 24B As shown, the clamping arm 100 is in a closed state. In some embodiments, the operating unit controls the mandrel 220 to move from the distal end to the proximal end, and the mandrel 220 drives the extension 120 and the clamping part 110 to move from the distal end to the proximal end, so that the distal end of the extension 120 is retracted into the channel of the sheath 210, and at least two clamping parts 110 are close to each other in a closed state, and the tissue is clamped between the at least two clamping parts 110.

[0162] like Figure 25A and Figure 25B As shown, the locking member 400 is released from the sheath 210. In some embodiments, the sheath 210 includes a first tube 213 and a second tube 214. The proximal end of the clamping portion 110 abuts against the surface of the distal end of the second tube 214 and pushes the second tube 214 relative to the first tube 213 from the distal end to the proximal end. The limiting piece has a tendency to move proximal to the locking member 400, causing the limiting piece to be deformed, displaced, or broken by force and released from the limiting surface of the locking member 400. At this time, the locking member 400 is released from the sheath 210.

[0163] like Figure 26A and Figure 26BAs shown, in some embodiments, after the locking member 400 and the sheath 210 are released, the clamping part 110 enters a pre-locked state. In some embodiments, the operating part controls the mandrel 220 to move from the distal end to the proximal end, and the second limiting structure 134 of the locked part 130 abuts against the contact part 440 of the locking member 400, generating feedback resistance that prevents the clamping part 110 from moving from the distal end to the proximal end. After feeling the feedback resistance, the operator can reconfirm the clamping status of the clamping part 110 on the tissue. If the clamping part 110 does not clamp the tissue properly, the mandrel 220 is pushed from the proximal end to the distal end, so that the clamping part 110 changes from the closed state to the open state, and the tissue is re-clamped; if the clamping part 110 clamps the tissue properly, the mandrel 220 is pulled from the distal end to the proximal end, so that the locking spring is deformed by force, and the bent part passes over the contact part 440 and enters the receiving cavity 410 to cooperate with the locking recess, and the clamping part 110 enters the final locked state.

[0164] like Figures 27A to 27C As shown, the clamping arm 100 is in a locked state. In some embodiments, the operating part controls the spindle 220 to continue moving from the distal end to the proximal end, the second limiting structure 134 of the locked part 130 passes over the contact part 440 and engages with the second stop structure 430 of the locking member 400, the first limiting structure 133 of the locked part 130 engages with the first stop structure 420 of the locking member 400, and at least two clamping parts 110 are locked.

[0165] like Figures 28A to 28C As shown, the clamping portion 110 and the locking member 400 are released from the sheath 210. In some embodiments, the extension portion 120 continues to move from the distal end to the proximal end, and the abutment portion 212 of the sheath 210 abuts against the trigger portion 121, causing the trigger portion 121 to trigger the first connecting structure 111 or the second connecting structure 122 to break, deform, or displace and release from the other. At this time, the extension portion 120 and the clamping portion 110 are released. The extension portion 120 retracts into the sheath 210 and is withdrawn from the body, while the clamping portion 110 and the locking member 400 remain at the tissue wound to assist in the closure of the tissue wound.

[0166] This specification provides a control method for a clamping device 10 according to Embodiment 3. This method is applied to the clamping device 10 shown in any of the above embodiments.

[0167] Figure 29 This is an exemplary flowchart of a control method for a clamping device 10 according to some embodiments of this specification.

[0168] like Figure 29 As shown, in some embodiments, the control method for the clamping device 10 includes process 2900. In some embodiments, process 2900 may be executed by an operating unit and includes the following steps:

[0169] Step 2910: Control at least two clamping parts 110 of the clamping arm 100 to open.

[0170] In some embodiments, the operating unit controls the mandrel 220 to move from the proximal end to the distal end, and the mandrel 220 drives the extension 120 and the clamping part 110 to move from the proximal end to the distal end, so that the distal end of the extension 120 extends out of the sheath 210 channel, at least two clamping parts 110 are far apart from each other and are in an open state, and a clamping space 20 for clamping tissue is formed between the at least two clamping parts 110.

[0171] Step 2920: Close at least two clamping parts 110 of the control arm 100.

[0172] In some embodiments, the operating unit controls the mandrel 220 to move from the distal end to the proximal end, and the mandrel 220 drives the extension 120 and the clamping part 110 to move from the distal end to the proximal end, so that the distal end of the extension 120 is retracted into the channel of the sheath 210, and at least two clamping parts 110 are close to each other in a closed state, and the tissue is clamped between the at least two clamping parts 110.

[0173] Step 2930: Control the clamping arm 100 to move from the distal end to the proximal end, and at least two clamping parts 110 cooperate with the locking member 400 to lock the at least two clamping parts 110; wherein, when the clamping arm 100 moves from the distal end to the proximal end, the at least two clamping parts 110 actuate the locking member 400 and the sheath 210 to release.

[0174] In some embodiments, before at least two clamping portions 110 are locked, the control method of the clamping device further includes: controlling the clamping portion 110 to abut against the distal end of the locking member 400, so that the locking member 400 generates feedback resistance against the clamping portion 110, and the clamping portion 110 and the locking member 400 are pre-locked. In the pre-locked state, the clamping portion 110 of the clamping arm 100 includes a second limiting structure 134, which abuts against the contact portion 440 of the locking member 400 and generates feedback resistance that prevents the clamping portion 110 from moving from the distal end to the proximal end. In some embodiments, the second limiting structure 134 includes a locking spring. During the movement of the clamping arm 100 from the distal end to the proximal end, the distal bent portion of the locking spring abuts against the contact portion 440 of the locking member 400 before entering the receiving cavity 410, and the contact portion 440 generates feedback resistance against the locking spring. This feedback resistance is fed back to the operator through the spindle 220, prompting the operator that the clamping portion 110 is about to enter the locked state.

[0175] In some embodiments, after feeling feedback resistance, the operator can reconfirm the clamping position of the clamping part 110 on the tissue. If the clamping part 110 does not clamp the tissue properly, the mandrel 220 is pushed from the proximal end to the distal end, causing the clamping part 110 to change from a closed state to an open state, thus re-clamping the tissue. If the clamping part 110 clamps the tissue properly, the mandrel 220 is pulled from the distal end to the proximal end, causing the locking spring to deform under force. The bent portion passes over the contact part 440 and enters the receiving cavity 410 to engage with the locking recess, and the clamping part 110 enters the final locked state. By setting the contact part 440 and the second stop structure 430 to form feedback resistance, the operator can be prompted to confirm the tissue clamping position before locking, reducing surgical errors.

[0176] In some embodiments, the operating unit controls the first limiting structure 133 of at least two clamping portions 110 to engage with the first stop structure 420 of the locking member 400 to limit the relative movement of the clamping portions 110 and the locking member 400 in a first direction. In some embodiments, including an attached Figure 9A The direction indicated by the middle arrow D1, for example, the width direction of the clamping part 110.

[0177] In some embodiments, the operating unit controls the second limiting structure 134 of at least two clamping portions 110 to cooperate with the second stop structure 430 of the locking member 400 to limit the relative movement of the clamping portions 110 and the locking member 400 in a second direction, wherein the second direction is not parallel to the first direction. In some embodiments, an appendix is ​​included. Figure 9A The direction indicated by the middle arrow D2 is, for example, the length direction of the clamping part 110. In some embodiments, after the clamping part 110 is pre-locked with the locking member 400, the operating part controls the spindle 220 to move from the distal end to the proximal end. The spindle 220 drives the clamping part 110 to continue moving from the distal end to the proximal end. The second limiting structure 134 of the clamping part 110 passes over the contact part 440 and cooperates with the second stop structure 430 of the locking member 400. The first limiting structure 133 of the locked part 130 cooperates with the first stop structure 420 of the locking member 400, and at least two clamping parts 110 are locked.

[0178] In some embodiments, the operating unit controls the actuating part 135 of the clamping part 110 to actuate the second blocking structure 211-2 of the sheath 210 and the second mating part 460 of the locking member 400 to release; wherein the second blocking structure 211-2 and the second mating part 460 are releasably connected to restrict the movement of the locking member 400 relative to the sheath 210 from the proximal end to the distal end.

[0179] In some embodiments, the sheath 210 or the rotating section 240 of the sheath 210 is an integrally formed structure. In some embodiments, the operating part controls the clamping part 110 to move from the distal end to the proximal end, and the actuating part 135 of the clamping part 110 moves to the proximal end of the second blocking structure 211-2 of the sheath 210, opening the proximal end of the second blocking structure 211-2 to release it from the second mating part 460 of the locking member 400, thereby releasing the locking member 400 from the sheath 210.

[0180] In some embodiments, the sheath 210 or the rotating section 240 of the sheath 210 includes a first tube 213 and a second tube 214, which are axially movably connected. In some embodiments, the operating part controls the clamping part 110 to move from the distal end to the proximal end, and the actuating part 135 at the proximal end of the clamping part 110 abuts against the end surface of the distal end of the second tube 214. The actuating part 135 is controlled to continue moving from the distal end to the proximal end, and pushes the second tube 214 relative to the first tube 213 from the distal end to the proximal end, causing the second blocking structure 211-2 of the sheath 210 to be deformed, displaced, or broken by force and released from the second mating part 460 of the locking member 400, at which time the locking member 400 is released from the sheath 210.

[0181] In some embodiments, the operating unit controls at least two clamping parts to lock with the locking member before, simultaneously with, or after the release of the locking member and the sheath.

[0182] In some embodiments, the second abutment structure 211-2 of the sheath 210 is configured such that, before at least two clamping portions 110 engage with the locking member 400, the actuating portion 135 actuates the second abutment structure 211-2 to deform, displace, or break, separating it from the locking member 400. In some embodiments, the operating portion first controls the locking member 400 to separate from the sheath 210, placing the locking member 400 in a disengaged state; then, the operating portion controls at least two clamping portions 110 to lock with the disengaged locking member 400.

[0183] In some embodiments, the second abutment structure 211-2 is configured such that when at least two clamping portions 110 engage with the locking member 400, the actuating portion 135 actuates the second abutment structure 211-2 to deform, displace, or break, separating it from the locking member 400. In some embodiments, the operating portion controls the locking member 400 to separate from the sheath 210 while simultaneously controlling the at least two clamping portions 110 to lock with the locking member 400.

[0184] In some embodiments, the second abutment structure 211-2 is configured such that after at least two clamping portions 110 engage with the locking member 400, the actuating portion 135 actuates the second abutment structure 211-2 to deform, displace, or break, separating it from the locking member 400. In some embodiments, the operating portion controls at least two clamping portions 110 to engage with the locking member 400, thereby locking the at least two clamping portions 110. Then, the operating portion controls the locking member 400 to separate from the sheath 210.

[0185] Step 2940: Control at least two clamping parts 110 to release from the sheath 210.

[0186] In some embodiments, the operating unit controls the extension to release from the clamping part, and then controls the extension to retract into the sheath, so that the clamping part and the locking member are released from the sheath together.

[0187] In some embodiments, the operating unit controls the extension 120 of the clamping arm 100 to move from the distal end to the proximal end, so that the triggering part 121 of the extension 120 or the clamping part 110 abuts against the abutting part 212 of the sheath 210, and the abutting part 212 can generate a squeezing force on the triggering part 121.

[0188] In some embodiments, the operating unit controls the extension 120 to continue moving from the distal end to the proximal end, and the triggering unit 121 is subjected to a force in a first direction, causing the first connecting structure 111 of the clamping part 110 to separate from the second connecting structure 122 of the extension 120, thus releasing the extension 120 from the clamping part 110; wherein, the first direction is not parallel to the movement direction of the extension 120. In some embodiments, the first direction is perpendicular to the movement direction of the extension 120 or at other angles.

[0189] In some embodiments, the operating unit controls the extension 120 to retract the sheath 210, causing at least two clamping portions 110 and the locking member 400 to be released outside the sheath 210, thus releasing the at least two clamping portions 110 and the locking member 400 from the sheath 210. The sheath 210 and the extension 120 are withdrawn from the body, while the at least two clamping portions 110 and the locking member 400 remain inside the body to aid wound healing.

[0190] The beneficial effects that the embodiments of this application may bring include, but are not limited to:

[0191] (1) The locking element is placed inside the sheath channel, which reduces the size of the locking element. The size of the locking element after it is engaged with the clamping part is also smaller. By setting the extension part and the locking element, the retention length of the locking element and the clamping part can be reduced by 30% to 70% compared with the traditional clamping part, which effectively improves the operation field of surgery and reduces the difficulty of surgery. In addition, the locking element is placed inside the extension part, which solves the problem of the limited opening angle of the extension part. That is, the opening angle of the extension part is not limited by the locking element, which allows the clamping part to obtain a larger clamping space.

[0192] (2) The locked part is located on the side of the clamping part facing the clamping space. That is, the locking member locks the locked part inside at least two clamping parts, without occupying the space outside the clamping part. This makes the structure more compact and small after the clamping part is closed, thereby reducing the surgical field of view obstructed by the clamping part.

[0193] (3) The locking part and the sheath are engaged by a blocking structure. When the clamping part performs the opening or closing operation, the clamping part and the locking part do not contact each other. The movement of the clamping part or other components (such as the extension part) will not affect the connection stability of the locking part.

[0194] (4) By setting a rotating section, the clamping arm can rotate around the sheath axis, which makes it easier to adjust the closing direction of at least two clamping parts to be consistent with the closing direction of the tissue wound, thereby improving the accuracy of clamping the tissue wound.

[0195] (5) By setting the contact part and the second stop structure to form feedback resistance, the operator can be prompted to confirm the tissue clamping status before locking, thus reducing surgical errors.

[0196] (6) By setting an actuating part to actuate the locking member to release it from the sheath, it is possible to avoid other parts or parts disturbing the locking member during the movement, thereby reducing the risk of accidental release of the locking member.

[0197] (7) By setting a trigger, the extension can only be released from the clamping part when triggered by the trigger, which can avoid accidental detachment of the extension and the clamping part due to the tension between them in the direction of movement, and reduce the surgical risk.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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 clamping device, characterized in that, include: Sheath, the sheath including a channel; A clamping arm, the clamping arm including at least two clamping portions and at least two extension portions, the extension portions being releasably connected to the clamping portions; A locking element, releasably disposed within the channel of the sheath and located between the at least two extensions, the locking element being used to engage with the at least two clamping portions to lock the at least two clamping portions.

2. The clamping device as described in claim 1, characterized in that, When the clamping arm is in the locked state, the locking member is located between the at least two clamping parts.

3. The clamping device as described in claim 1, characterized in that, The extension or the clamping part includes a triggering part, which is configured to trigger the release of the extension and the clamping part when subjected to a force in a first direction that is greater than a preset force value; wherein the first direction is not parallel to the movement direction of the extension.

4. The clamping device as described in claim 3, characterized in that, A clamping space is formed between the at least two clamping portions, a first connecting structure is provided on the side of the clamping portion facing the clamping space, and a second connecting structure is included at the distal end of the extension portion, wherein the first connecting structure and the second connecting structure are releasable. The triggering part is disposed on the first connecting structure or the second connecting structure, and the distal end of the sheath includes an abutment part, which is used to drive the triggering part, causing one of the first connecting structure and the second connecting structure to break, deform or displace and release from the other.

5. The clamping device as described in claim 1, characterized in that, The clamping arm includes an open state and a closed state. In the open state, the distal portion of the extension extends out of the sheath and the at least two clamping portions are far apart from each other. In the closed state, the extension is located inside the sheath and the at least two clamping portions are close together.

6. The clamping device as described in claim 1, characterized in that, The sheath includes a first abutting structure, and the locking member includes a first mating portion, wherein the first abutting structure engages with the first mating portion to restrict the movement of the locking member relative to the sheath from the distal end to the proximal end; and / or; The sheath includes a second abutment structure, and the locking member includes a second mating portion. The second abutment structure and the second mating portion are releasably connected to restrict the movement of the locking member relative to the sheath from the proximal end to the distal end.

7. The clamping device as described in claim 6, characterized in that, The clamping arm includes an actuation part configured to, when moving from the distal end to the proximal end, actuate the second blocking structure and the second mating part to release, thereby releasing the locking member from the sheath.

8. The clamping device as described in claim 7, characterized in that, The second blocking structure includes a limiting spring, the distal end of which is connected to the inner wall of the sheath, and the proximal end which protrudes radially inward from the inner wall of the sheath. The locking member includes a limiting surface facing the distal end, which is used to cooperate with the limiting spring. The actuating part is provided on the clamping part. The actuating part pushes the limiting spring from the distal end to the proximal end, causing the limiting spring to deform, displace, or break and separate from the limiting surface, thereby releasing the locking member from the sheath.

9. The clamping device as described in claim 7, characterized in that, The sheath includes a first tube and a second tube. The first tube is axially movable and engages with the second tube. The first abutment structure is located inside the first tube, and the second abutment structure is located on the second tube. The actuating part is configured to actuate the second tube relative to the first tube from the distal end to the proximal end, causing the second abutment structure to deform, displace, or break and release from the second engaging part.

10. A clamping device, characterized in that, include: Sheath, the sheath including a channel; A clamping arm, the clamping arm including at least two clamping parts, a clamping space being formed between the at least two clamping parts, and a locking part being provided on the side of the clamping part facing the clamping space; A locking element, which is releasably disposed within the channel of the sheath tube, is used to engage with the locked portion to lock the at least two clamping portions. When the clamping arm is in the locked state, the locking member is located between the at least two clamping parts.

11. The clamping device as described in claim 10, characterized in that, The locking element includes a receiving cavity for accommodating the locked portion of the at least two clamping portions; The locked part includes a fixing part and a suspension structure. The suspension structure is arranged with a gap between the fixing part and the clamping part. When the clamping arm is locked, the suspension structure is located in the receiving cavity.

12. The clamping device as described in claim 10, characterized in that, The locked portion includes a first limiting structure, and the locking member includes a first stop structure. The first limiting structure cooperates with the first stop structure to restrict the relative movement of the clamping portion and the locking member in a first direction; and, The locked part includes a second limiting structure, and the locking member includes a second stop structure. The second limiting structure cooperates with the second stop structure to restrict the relative movement of the clamping part and the locking member in a second direction, wherein the second direction is not parallel to the first direction.

13. The clamping device as described in claim 12, characterized in that, The locking element includes a contact portion located at the distal end of the second stop structure, and the clamping arm includes a pre-locked state and a final locked state. In the pre-locked state, the second limiting structure abuts against the contact portion and generates feedback resistance that prevents the clamping portion from moving from the distal end to the proximal end; In the final locked state, the second limiting structure passes over the contact portion and engages with the second stop structure, the first limiting structure engages with the first stop structure, and the at least two clamping portions are locked.

14. The clamping device as described in claim 10, characterized in that, The sheath includes a first abutting structure, and the locking member includes a first mating portion, wherein the first abutting structure engages with the first mating portion to restrict the movement of the locking member relative to the sheath from the distal end to the proximal end; and / or; The sheath includes a second abutment structure, and the locking member includes a second mating portion. The second abutment structure and the second mating portion are releasably connected to restrict the movement of the locking member relative to the sheath from the proximal end to the distal end.

15. The clamping device as described in claim 14, characterized in that, The clamping arm includes an actuation part configured to, when moving from the distal end to the proximal end, actuate the second blocking structure and the second mating part to release, thereby releasing the locking member from the sheath.

16. The clamping device as described in claim 15, characterized in that, The second blocking structure includes a limiting spring, the distal end of which is connected to the inner wall of the sheath, and the proximal end which protrudes radially inward from the inner wall of the sheath. The locking member includes a limiting surface facing the distal end, which is used to cooperate with the limiting spring. The actuating part is provided on the locked part. The actuating part pushes the limiting spring from the distal end to the proximal end, causing the limiting spring to deform, displace, or break and separate from the limiting surface, thereby releasing the locking member from the sheath.

17. The clamping device as described in claim 15, characterized in that, The sheath includes a first tube and a second tube. The first tube is axially movable and engages with the second tube. The first abutment structure is located inside the first tube, and the second abutment structure is located on the second tube. The actuating part is configured to actuate the second tube relative to the first tube from the distal end to the proximal end, causing the second abutment structure to deform, displace, or break and release from the second engaging part.

18. A clamping device, characterized in that, include: Sheath, the sheath comprising a channel and a retaining structure; A clamping arm, the clamping arm comprising at least two clamping portions; A locking element, which is releasably disposed within the channel of the sheath via the blocking structure, is used to lock the at least two clamping portions; The blocking structure includes a second blocking structure, the second blocking structure including a limiting spring, the distal end of the limiting spring being connected to the inner wall of the sheath, and the proximal end protruding radially inward from the inner wall of the sheath; the locking member includes a second mating part, the second mating part including a limiting surface facing the distal end, the limiting surface being used to engage with the limiting spring. The clamping arm includes an actuating part disposed on the clamping part. The actuating part pushes the limiting spring from the distal end to the proximal end, causing the limiting spring to deform, displace, or break and separate from the limiting surface, thereby releasing the locking member from the sheath. The clamping arm includes an operating state and a released state. In the operating state, the locking member engages with the blocking structure and is located within the sheath channel. In the released state, the clamping part and the locking member disengage from the blocking structure and are located outside the sheath channel.

19. The clamping device as described in claim 18, characterized in that, The operating states include an open state and a closed state. In the open state, the at least two clamping parts are far apart from each other and located outside the sheath channel. In the closed state, the at least two clamping parts are close together and in contact with the locking member, and the at least two clamping parts are located outside the sheath channel.

20. The clamping device as described in claim 18, characterized in that, The operating state includes a locked state, in which the at least two clamping parts cooperate with the locking member, and the locking member is released from the sheath.

21. The clamping device as described in claim 18, characterized in that, The blocking structure includes a first blocking structure, and the locking member includes a first mating part. The first blocking structure and the first mating part cooperate to restrict the movement of the locking member relative to the sheath from the distal end to the proximal end.

22. The clamping device as described in claim 21, characterized in that, The sheath includes a first tube and a second tube. The first tube is axially movable and engages with the second tube. The first abutment structure is located inside the first tube, and the second abutment structure is located on the second tube. The actuating part is configured to actuate the second tube relative to the first tube from the distal end to the proximal end, causing the second abutment structure to deform, displace, or break and release from the second engaging part.

23. The clamping device as described in claim 18, characterized in that, The sheath includes a fixed section and a rotating section, the proximal end of the rotating section being rotatably connected to the distal end of the fixed section, and the rotating section being configured to rotate about the axis of the sheath.

24. A method for controlling a clamping device, characterized in that, The method is applied to the clamping device as described in any one of claims 1-23, and the control method includes: At least two gripping parts of the control arm open; The at least two clamping portions of the clamping arm are controlled to close; The clamping arm is controlled to move from the distal end to the proximal end, and the at least two clamping parts cooperate with the locking member to lock the at least two clamping parts; wherein, when the clamping arm moves from the distal end to the proximal end, the at least two clamping parts actuate the locking member and the sheath to release; Control the release of the at least two clamping parts from the sheath.

25. The control method for the clamping device as described in claim 24, characterized in that, Before the at least two clamping parts are locked, the method further includes: The clamping part is controlled to abut against the distal end of the locking member, so that the locking member generates feedback resistance against the clamping part, and the clamping part and the locking member are pre-locked.

26. The control method for the clamping device as described in claim 24, characterized in that, The at least two clamping portions actuate the release of the locking member and the sheath, including: The actuating part of the clamping part actuates the second blocking structure of the sheath and the second mating part of the locking member to release; wherein the second blocking structure and the second mating part are releasably connected to restrict the movement of the locking member relative to the sheath from the proximal end to the distal end.

27. The control method for the clamping device as described in claim 26, characterized in that, The control method further includes: Before, simultaneously with, or after the release of the locking member from the sheath, control the at least two clamping portions to lock with the locking member; The second blocking structure is configured such that, before, simultaneously with, or after the at least two clamping parts engage with the locking member, the actuating part causes the second blocking structure to deform, displace, or break, separating it from the locking member.

28. The control method for the clamping device as described in claim 24, characterized in that, Controlling the release of the at least two clamping portions from the sheath includes: Control the extension of the clamping arm to move from the distal end to the proximal end, so that the trigger part of the extension or the clamping part abuts against the contact part of the sheath; The extension is controlled to continue moving from the distal end to the proximal end, and the trigger part is subjected to a force in a first direction, causing the first connecting structure of the clamping part to separate from the second connecting structure of the extension part, and the extension part and the clamping part are released; wherein, the first direction is not parallel to the movement direction of the extension part; Control the extension to retract the sheath, so that the at least two clamping parts and the locking member are released together to the outside of the sheath channel.

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