A clip device, a clip apparatus, and a clip unlocking method

Abstract

The application relates to a clip device, a clip instrument and a clip unlocking method. The clip device comprises a clip and a receiving tube. The clip comprises a clip arm, the clip arm comprises a first clip arm and a second clip arm, and the first clip arm distal end and the second clip arm distal end are used for ligation. The receiving tube comprises a channel, the first clip arm proximal end and the second clip arm proximal end can be received in the channel. The clip can be switched from a locked state to an unlocked state. When the clip is in the locked state, the first clip arm distal end and the second clip arm distal end remain closed, and the receiving tube limits the movement of the clip relative to the receiving tube towards the distal end. When the clip is switched from the locked state to the unlocked state, the movement limitation of the receiving tube on the clip is removed, and the first clip arm distal end and the second clip arm distal end can be reopened.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 2022800096740, filed on January 12, 2022, entitled "A Clamp Device, Clamp Instrument, and Clamp Unlocking Method". The original application was a Chinese national phase application of a PCT international application filed on January 12, 2022, entering the Chinese national phase on July 13, 2023, also entitled "A Clamp Device, Clamp Instrument, and Clamp Unlocking Method". This PCT international application claimed priority to Chinese Patent Application No. 2021100430457, filed on January 13, 2021, and Chinese Patent Application No. 2021108745239, filed on July 30, 2021. Technical Field

[0002] This application relates to the field of medical devices, and in particular to a clamp device, clamp apparatus, and clamp unlocking method. Background Technology

[0003] Bleeding frequently occurs in the stomach and intestines of organisms due to various diseases, accidental injuries, or damage after endoscopic treatment. Active bleeding can be treated with mechanical compression using hemostatic clips. Mechanical compression hemostasis with hemostatic clips is relatively reliable for active bleeding not caused by varicose veins and has been accepted by both doctors and patients. Hemostatic clips can also close damaged mucosa of the digestive tract to a certain extent, promoting wound healing. However, once the clip device is locked, the locking relationship cannot be released without damage; it can only be removed by force, forcibly separating the clamped part from the tissue, which can cause secondary tissue damage or rebleeding.

[0004] Therefore, it is necessary to propose a clamp device, clamping instrument, and clamp unlocking method that can solve the problem that the clamp can only be removed by force after it is locked. Summary of the Invention

[0005] One aspect of this specification provides a clamp device, including a clamp and a receiving tube. The clamp includes clamp arms, which include a first clamp arm and a second clamp arm, the distal ends of the first clamp arm and the second clamp arm being used for ligation. The receiving tube includes a channel in which the proximal ends of the first clamp arm and the second clamp arm are received. The clamp is capable of switching from a locked state to an unlocked state. When the clamp is in the locked state, the distal ends of the first clamp arm and the second clamp arm remain closed, and the receiving tube restricts the clamp from moving distally relative to the receiving tube. When the clamp switches from the locked state to the unlocked state, the movement restriction of the clamp by the receiving tube is released, and the distal ends of the first clamp arm and the second clamp arm can be reopened.

[0006] In some embodiments, the clamp includes a locking portion connected to the clamp arm; the storage tube includes an outer wall and a locking portion, the locking portion restricting movement toward the distal end relative to the outer wall; when the clamp is in the locked state, the locking portion and the locking portion cooperate to restrict the movement of the storage tube on the clamp.

[0007] In some embodiments, the release of the engagement between the locking part and the locked part releases the movement restriction of the clip by the storage tube, and the clip switches from the locked state to the unlocked state.

[0008] In some embodiments, deformation, breakage, or displacement of the locking part may disengage the locking part from the locked part.

[0009] In some embodiments, the locking part includes a spring piece, the spring piece including a first end, a second end, and a third end, the first end of the spring piece being connected to the outer wall of the receiving tube, the second end of the spring piece being located near the first end of the spring piece, and the third end of the spring piece being located far from the first end of the spring piece, the second end of the spring piece constituting the locking part.

[0010] In some embodiments, when the clip is in the locked state, the second end of the spring extends into the interior of the channel, and the third end of the spring extends out of the exterior of the outer wall; when the clip switches from the locked state to the unlocked state, the second end of the spring extends out of the exterior of the outer wall, and the third end of the spring extends into the interior of the channel.

[0011] In some embodiments, deformation, breakage, or displacement of the locked portion may disengage the locking portion from the locked portion.

[0012] In some embodiments, the locked portion includes a connecting pin, which is connected to the clamping arm; the connecting pin is compressed radially under force, thereby releasing the engagement between the locking portion and the locked portion.

[0013] In some embodiments, the connecting pin includes a movable end and a spring connected to the movable end, the movable end being subjected to a force that compresses the spring radially, such that the radial dimension of the connecting pin is smaller than the spacing of the locking portion.

[0014] In some embodiments, the clamping arm includes a protrusion located at the proximal end of the clamping arm, the protrusion constituting the locked portion; the protrusion is subjected to force and undergoes radial displacement, thereby disengaging the locking portion and the locked portion from their engagement.

[0015] In some embodiments, the protrusion includes a first protrusion disposed near the proximal end of the first clamping arm and a second protrusion disposed near the proximal end of the second clamping arm, the first protrusion and the second protrusion being radially away from each other; the receiving tube is provided with a locking groove, the locking groove constituting the locking part; after the first protrusion and the second protrusion extend into the locking groove, the locking part and the locked part cooperate with each other; after the first protrusion and the second protrusion exit the locking groove, the cooperation between the locking part and the locked part is released.

[0016] In some embodiments, the clamping arm further includes a groove, and the receiving tube further includes a pin, wherein the groove and the pin are slidably connected.

[0017] In some embodiments, the storage tube is further provided with an unlocking part that is connected to the locked part, and the locked part is released from the engagement relationship between the locked part and the locking part by the force of the unlocking part.

[0018] In some embodiments, the unlocking part includes a spring piece disposed on the outer wall; the spring piece abuts against the protrusion, and the spring piece, under force, causes the protrusion to deflect radially toward the inner side of the channel, thereby releasing the engagement between the locked part and the locking part.

[0019] In some embodiments, the outer wall is provided with a slot, the slot extending axially along the receiving tube; the spring includes a fixed end and a free end, the fixed end is fixedly connected to the outer wall, and the free end is disposed along the slot; the free end is radially deflectable relative to the fixed end.

[0020] In some embodiments, the free end of the spring is provided with a mating portion that bends and extends radially into the channel, and the mating portion can be radially deflected within the locking groove or deflected outside the locking groove.

[0021] In some embodiments, the storage tube includes a first storage tube and a second storage tube, with the distal end of the second storage tube sleeved on the proximal end of the first storage tube; the unlocking part is provided in the first storage tube, and the locking groove is provided in the second storage tube.

[0022] In some embodiments, the locking part includes a pin disposed on the storage tube, the pin passing through the storage tube radially; the clamping arm includes a groove, the groove being slidably connected to the pin; the locked part includes an elastic blocking member disposed on the path of the groove.

[0023] In some embodiments, the elastic blocking member is deflected by force, thereby disengaging the locking part from the locking part.

[0024] In some embodiments, the pin is compressed radially under force and disengages from the receiving tube, thereby releasing the engagement between the locking part and the locked part.

[0025] In some embodiments, the clamp includes a pull rod and a connecting rod structure, the connecting rod structure being connected to the proximal end of the clamp arm, and the pull rod being connected to the proximal end of the connecting rod structure; when the pull rod drives the connecting rod structure to move from the distal end to the proximal end, the connecting rod structure drives the clamp arm to close.

[0026] In some embodiments, the locked portion is located at the proximal end of the linkage structure.

[0027] In some embodiments, the release of the connection between the locked part and the clamping arm releases the movement restriction of the clamp by the storage tube.

[0028] In some embodiments, the clamping arm deforms, breaks, or displaces under force, causing the connection between the locked part and the clamping arm to be released.

[0029] In some embodiments, the clamp includes a connecting pin, the first clamp arm and the second clamp arm are connected by the connecting pin, or the proximal ends of the first clamp arm and the second clamp arm form a receiving space, the connecting pin extends radially through the receiving space, one end of the connecting pin constitutes the locked portion, or both ends of the connecting pin constitute the locked portion.

[0030] In some embodiments, the portion of the clamp arm located near the proximal end of the connecting pin constitutes a first connecting portion, and the clamp and the locked portion are connected through the first connecting portion; when the first connecting portion is subjected to radial extrusion force toward the channel, the first connecting portion deforms, breaks, or displaces, and the connection between the clamp and the locked portion is released.

[0031] In some embodiments, releasing the movement restriction of the locking portion relative to the outer wall releases the movement restriction of the storage tube on the clamp.

[0032] In some embodiments, the storage tube includes a first storage tube and a second storage tube, the second storage tube being disposed inside the first storage tube, the outer wall being disposed in the first storage tube, and the locking part being disposed in the second storage tube; when the clip is in the locked state, the first storage tube and the second storage tube are relatively fixed; when the clip switches from the locked state to the unlocked state, the first storage tube and the second storage tube can move relative to each other.

[0033] In some embodiments, the first storage tube is provided with a hanging groove, and the second storage tube is provided with a hanging part; the hanging groove and the hanging part are hooked together to fix the first storage tube and the second storage tube relative to each other; the hanging part is disengaged from the hanging groove to allow the first storage tube and the second storage tube to move relative to each other.

[0034] In some embodiments, the second storage tube includes a spring piece, the spring piece having a first end and a second end; the first end of the spring piece constitutes the hook portion; the second end of the spring piece extends into the interior of the second storage tube channel, constituting the locking portion.

[0035] In some embodiments, the first end of the spring is deformed, broken, or displaced under force, causing the hook part to detach from the hook groove.

[0036] Another aspect of this specification provides a clamping device, comprising a clamping device as described in any one of claims 1-31, and a conveying device connected to the clamping device; the conveying device is configured to convey the clamping device to a target area for performing the specified operation; wherein the conveying device includes an operating part capable of driving the clamping device to perform the specified operation; the conveying device is releasably connected to the clamping device.

[0037] In some embodiments, the clamping device includes a clamp having a locked state and an unlocked state; the clamping device further includes a disassembly device for switching the clamp from the locked state to the unlocked state.

[0038] Another aspect of this specification provides a method for unlocking a clip, wherein the clip device includes a clip and a storage tube, the clip includes a locked portion, the storage tube includes a locking portion, the locking portion cooperates with the locked portion to lock the clip in a locked state, and the clip arm remains closed; the method includes: operating a disassembly device to provide a disassembly force to the clip in the locked state; applying the disassembly force to the locked portion to release the cooperation between the locking portion and the locked portion, thereby switching the clip from the locked state to the unlocked state; or, applying the disassembly force... The force is applied to the locking part to disengage the locking part from the locked part, thereby switching the clamp from the locked state to the unlocked state; or, the disassembly force is applied to the clamp arm to disengage the clamp arm from the locked part, thereby switching the clamp from the locked state to the unlocked state; or, the disassembly force is applied to the storage tube to move the locking part relative to the outer wall of the storage tube toward the distal end, thereby switching the clamp from the locked state to the unlocked state; wherein, when the clamp is in the unlocked state, the distal end of the clamp arm is open. Attached Figure Description

[0039] This application 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:

[0040] Figure 1 This is an overall schematic diagram of the clamping device according to some embodiments of this application;

[0041] Figure 2 This is a schematic diagram of a clamping device according to some embodiments of this application;

[0042] Figure 3 This is a cross-sectional view of a clamping device according to some embodiments of this application;

[0043] Figure 4 This is a cross-sectional view of a clamping device according to some embodiments of this application;

[0044] Figure 5 This is a schematic diagram of a clip according to some embodiments of this application;

[0045] Figure 6 for Figure 5 Side view;

[0046] Figure 7 This is a schematic diagram of a clip according to some embodiments of this application;

[0047] Figure 8 for Figure 7 Side view;

[0048] Figure 9 This is a schematic diagram of a first receiving tube according to some embodiments of this application;

[0049] Figure 10 This is a schematic diagram of a second receiving tube according to some embodiments of this application;

[0050] Figure 11 This is a side view of a clip according to some embodiments of this application;

[0051] Figure 12 This is a schematic diagram showing the clip in an unlocked state according to some embodiments of this application;

[0052] Figure 13 This is a schematic diagram showing the clip in a locked state according to some embodiments of this application;

[0053] Figure 14 This is a schematic diagram showing the clip in a locked state according to some embodiments of this application;

[0054] Figure 15This is a schematic diagram showing the clip in an unlocked state according to some embodiments of this application;

[0055] Figure 16 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 1 ;

[0056] Figure 17 for Figure 16 Enlarged view of part A;

[0057] Figure 18 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 2 ;

[0058] Figure 19 for Figure 18 Enlarged view of section B;

[0059] Figure 20 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 3 ;

[0060] Figure 21 for Figure 20 Enlarged view of section C;

[0061] Figure 22 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0062] Figure 23 for Figure 22 Enlarged view of part D;

[0063] Figure 24 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0064] Figure 25 for Figure 24 Enlarged view of part E;

[0065] Figure 26 This is a schematic diagram of a clamping device according to some embodiments of this application;

[0066] Figure 27 This is a cross-sectional view of a clamping device according to some embodiments of this application;

[0067] Figure 28 for Figure 27 Enlarged view of local F;

[0068] Figure 29 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0069] Figure 30 for Figure 29 Enlarged view of local G;

[0070] Figure 31 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0071] Figure 32 for Figure 31 Enlarged view of H section;

[0072] Figure 33 This is a schematic diagram of the first clamping arm according to some embodiments of this application;

[0073] Figure 34 This is a cross-sectional view of the receiving tube shown according to some embodiments of this application;

[0074] Figure 35 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0075] Figure 36 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0076] Figure 37 This is a schematic diagram of a clamping device according to some embodiments of this application;

[0077] Figure 38 This is a schematic diagram of a storage tube according to some embodiments of this application;

[0078] Figure 39 This is a cross-sectional view of the receiving tube shown according to some embodiments of this application;

[0079] Figure 40 This is a cross-sectional view of the receiving tube shown according to some embodiments of this application;

[0080] Figure 41 This is a schematic diagram of a clip according to some embodiments of this application;

[0081] Figure 42 This is a schematic diagram of a sheath according to some embodiments of this application;

[0082] Figure 43 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 1 ;

[0083] Figure 44 for Figure 46 Enlarged view of part A;

[0084] Figure 45This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 2 ;

[0085] Figure 46 for Figure 45 Enlarged view of section B;

[0086] Figure 47 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 3 ;

[0087] Figure 48 for Figure 47 Enlarged view of section C;

[0088] Figure 49 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0089] Figure 50 for Figure 49 Enlarged view of part D;

[0090] Figure 51 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0091] Figure 52 for Figure 51 Enlarged view of part E;

[0092] Figure 53 This is a schematic diagram of the first clamping arm according to some embodiments of this application;

[0093] Figure 54 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0094] Figure 55 for Figure 54 Sectional view of the clamp device along line 10C-C;

[0095] Figure 56 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0096] Figure 57 for Figure 56 10D-D sectional view of the clamping device;

[0097] Figure 58 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0098] Figure 59 for Figure 58 Enlarged view of part I;

[0099] Figure 60 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0100] Figure 61 for Figure 60 Enlarged view of part J;

[0101] Figure 62 This is a schematic diagram of a storage tube according to some embodiments of this application;

[0102] Figure 63 This is a cross-sectional view of the receiving tube shown according to some embodiments of this application;

[0103] Figure 64 This is a schematic diagram of a first receiving tube according to some embodiments of this application;

[0104] Figure 65 This is a schematic diagram of a second receiving tube according to some embodiments of this application;

[0105] Figure 66 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 4 ;

[0106] Figure 67 for Figure 66 Local K-magnified view;

[0107] Figure 68 This is a schematic diagram of the operation of the clamping device according to some embodiments of this application. Figure 5 ;

[0108] Figure 69 for Figure 68 Enlarged view of a section L.

[0109] Figure label:

[0110] 10 is a clamping device; 20 is a conveying device;

[0111] 110 is the operating handle; 120 is the sliding part; 130 is the conveying part;

[0112] 200 is the sheath; 201 is the end cap; 202 is the limiting recess; 210 is the mandrel; 211 is the connecting end; 212 is the large diameter section; 213 is the small diameter section; 214 is the connecting piece.

[0113] 300 is an organization;

[0114] 400 is a clamp; 402 is an elastic ring; 410 is a first clamping arm; 411 is a first bent portion; 411A is a first connecting portion; 412 is a first hole; 420 is a second clamping arm; 421 is a second bent portion; 421A is a second connecting portion; 422 is a second hole; 432 is a socket hole; 440 is a sliding groove; 450 is an elastic blocking element; 461 is a first protrusion; 462 is a second protrusion.

[0115] 500 is a storage tube; 501 is a first storage tube; 502 is a second storage tube; 503 is a guide rail groove; 504 is a connecting hole; 505 is a positioning protrusion; 510 is a spring piece; 510A is the first end of the spring piece; 510B is the second end of the spring piece; 510C is the third end of the spring piece; 511 is a locking part; 512 is an unlocking part; 513 is a blocking part; 520 is a limiting protrusion; 530 is a hook groove; 531 is the first hook groove; 532 is the second hook groove; 540 is a hook part; 541 is the first hook part; 542 is the second hook part; 550 is a pin; 560 is a locking groove; 571 is the fixed end of the spring piece; 572 is the free end of the spring piece; 573 is a docking part.

[0116] 601 is the connecting pin; 602 is the locked part; 603 is the pin fixing part; 604 is the spring; 606 is the pull rod; 605 is the linkage structure;

[0117] 700 is the disassembly device; 701 is the first disassembly arm; 702 is the second disassembly arm. Detailed Implementation

[0118] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. 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.

[0119] 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.

[0120] As indicated in this application 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 explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0121] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. 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.

[0122] This specification relates to clamp devices, clamp instruments for operating clamp devices, and unlocking methods for operating clamp devices to perform unlocking operations. In some embodiments, the end effector may include a clamp device and a delivery device, which may be used to deliver the clamp device to the location on a medical object where a medical operation needs to be performed. The clamp device may be used to perform a medical operation on the medical object. In some embodiments, the medical operation performed by the clamp device may include surgical hemostasis, wound healing, tissue fixation, etc., and the clamp device may perform these medical operations by closing its clamping arms. In some embodiments, to maintain the medical operation performed by the clamp device, the clamp device may include a locked state, in which case the clamping arms of the clamp device may remain closed. In some embodiments, the clamp device may remain on the medical object (e.g., clamped to tissue) by maintaining the locked state. In some embodiments, the clamp device may include a clamp and a receiving tube, in which the clamp may be received and kept closed. The storage tube is equipped with a locking part, and the clamp is equipped with a locking part. Through the cooperation between the locking part and the locking part, the storage tube can restrict the movement of the clamp relative to the outer wall of the storage tube, thereby keeping the clamp closed.

[0123] In some embodiments, when a medical procedure needs to be performed, the clamp device can switch from a locked state to an unlocked state, allowing the clamp device to reopen and be removed from the medical procedure without causing damage to the medical object. In some embodiments, the movement restriction of the storage tube on the clamp is released by releasing the engagement between the locking part and the locked part on the clamp device, or releasing the connection between the locked part and the clamp arm, or releasing the movement restriction of the locking part relative to the outer wall, thereby realizing the locking and unlocking process of the clamp.

[0124] Figure 1 This is a general schematic diagram of a clamping device according to some embodiments of this application. For example... Figure 1As shown, the clamping device 100 may include a clamping device 10 (including a clamp 400 and a receiving tube 500) and a conveying device 20 (including an operating part 100 and a conveying part 130) that is releasably connected to the clamping device 10. A releasable connection means that the connection between the clamping device 10 and the conveying device 20 can be detached.

[0125] The delivery device 20 is configured to deliver the clamp device 10 to a target area where a specified operation is performed. In some embodiments, the target area may be a region within a target object where the specified operation needs to be performed (e.g., a lesion). In some embodiments, the specified operation may be a medical operation performed during surgery, such as hemostasis, ligation, etc. In some embodiments, the target object may be an object receiving a medical operation. In some embodiments, the target object may include a biological object or a non-biological object, wherein a biological object may include a person (e.g., a patient), an animal, or a plant, etc., and a non-biological object may include an experimental model (e.g., an organ model, etc.). In some embodiments, the delivery device 20 may also be used to operate the clamp device 10 to perform the specified operation in the target area. In some embodiments, the delivery device 20 may include an operating part 100 and a delivery part 130. In some embodiments, the delivery part 130 may be used to deliver the clamp device 10 to the target area within the target object. In some embodiments, the operating part 100 may actuate the clamp device 10 to perform the specified operation. In some embodiments, the region within the target object where the specified operation needs to be performed may be a lesion area of ​​a person or animal. In some embodiments, the operating part 100 of the delivery device 20 may include an operating handle 110 and a sliding part 120. Specifically, the operator (e.g., a doctor) can perform hemostasis, ligation, and other operations on the clamp device 10 through the operating handle 110 and the sliding part 120. In some embodiments, the delivery part 130 of the delivery device 20 may include a sheath 200 and a mandrel 210. In some embodiments, the sheath 200 may be a tubular structure that provides an internal channel for other components (e.g., the mandrel 210). In some embodiments, the mandrel 210 may be a long shaft-like structure disposed within the internal channel of the sheath for driving the clamp device 10 to move. In some embodiments, the delivery device 20 may be connected to the clamp device 10 through the sheath 200 and the mandrel 210. For more details on the connection relationship between the delivery device 20 and the clamp device 10, please refer to this specification. Figure 3 The description.

[0126] The clamp device 10 may include a clamp 400 and a receiving tube 500. The proximal end of the clamp 400 is received in the channel of the receiving tube 500, and the distal end of the clamp is used to perform a specified operation (e.g., hemostasis, ligation). The terms "proximal end" and "distal end" as used in the embodiments of this specification can refer to orientation. They refer to the orientation along the length of the clamp device 100 (e.g., the extension direction of the delivery device 20) or along the direction in which the clamp device 100 enters the human body, with the side closer to the operator and farther from the target object being designated as "proximal end," and the side closer to the target object and farther from the operator being designated as "distal end." "Proximal end" and "distal end" should not be construed as referring only to the ends.

[0127] like Figure 2 As shown, in some embodiments, the clamp may include clamp arms, including a first clamp arm 410 and a second clamp arm 420, the distal ends of the first clamp arm 410 and the distal ends of the second clamp arm 420 being used for ligation. The receiving tube 500 may include a tubular structure, which may include an outer wall and a channel surrounded by the outer wall, the proximal ends of the first clamp arm 410 and the second clamp arm 420 being received within the channel of the receiving tube 500. In some embodiments, when the clamp moves proximally relative to the receiving tube, the distal ends of the first clamp arm 410 and the second clamp arm 420 approach each other, and the first clamp arm 410 and the second clamp arm 420 are gradually received within the channel of the receiving tube 500, thus closing the clamp. In some embodiments, when the clamp moves distally relative to the receiving tube, the first clamp arm 410 and the second clamp arm 420 withdraw from the receiving tube 500, the distal ends of the first clamp arm 410 and the second clamp arm 420 move away from each other, thus opening the clamp. Further structural details of the clamp device 10 can be found elsewhere in this specification.

[0128] In some embodiments, such as Figures 3-8 As shown, to connect the conveying device 20 and the clamp device 10, the clamp 400 may include a socket hole 432, and the mandrel 210 may be sleeved within the socket hole 432 to complete the connection with the clamp 400. Specifically, the mandrel 210 may include a large-diameter portion 212 and a small-diameter portion 213, and the diameter of the large-diameter portion 212 of the mandrel 210 is larger than the inner diameter of the socket hole 432, while the diameter of the small-diameter portion 213 is smaller than the inner diameter of the socket hole 432. In some embodiments, the small-diameter portion 213 is fixedly connected to the distal end of the mandrel 210, and the large-diameter portion 212 is fixedly connected to the small-diameter portion 213. In some embodiments, the distal end of the mandrel 210 is fixedly connected to the connecting end 211, the distal end of the connecting end 211 is fixedly connected to the small-diameter portion 213, and the distal end of the small-diameter portion 213 is fixedly connected to the large-diameter portion 212. In some embodiments, the large-diameter portion 212 and the small-diameter portion 213 of the mandrel 210 can be integrally formed, or the large-diameter portion 212 of the mandrel 210 can be fixedly connected to the small-diameter portion 213 by means of gluing, fasteners, welding, etc.

[0129] In some embodiments, the distal end of the sheath 200 may include a limiting recess 202, and the proximal end of the receiving tube 500 is further provided with a limiting protrusion 520. The limiting protrusion 520 is used to cooperate with the limiting recess 202 at the distal end of the sheath 200 to complete the connection and release of the sheath 200 and the receiving tube 500. Figure 3 As shown, in some embodiments, the distal end of the mandrel 210 may include a connecting end 211. When the distal end of the mandrel 210 extends into the receiving tube 500, due to the elasticity of the limiting protrusion 520, the limiting protrusion 520 can be subjected to the squeezing force of the connecting end 211 against the limiting recess 202, causing the limiting protrusion 520 to be squeezed into the limiting recess 202 by the connecting end 211. The outer diameter of the connecting end 211 is larger than the inner diameter of the limiting protrusion 520, and the inner diameter of the limiting protrusion 520 may be the inner diameter of the second receiving tube 502. When the distal end of the mandrel 210 exits the receiving tube, the limiting protrusion 520 is no longer squeezed by the connecting end 211, and the limiting protrusion 520 recovers its elastic deformation, thus exiting from the limiting recess 202. In some embodiments, the distal end of the mandrel 210 may not include the connecting end 211. The outer diameter of the mandrel 210 may be larger than the inner diameter of the limiting protrusion 520. After the mandrel 210 extends into the limiting protrusion 520, it can directly squeeze the limiting protrusion 520, so that the limiting protrusion 520 extends into the limiting recess 202.

[0130] In some embodiments, after the conveying device 20 is connected to the clamp device 10, the mandrel 210 can drive the clamp 400 to move relative to the receiving tube 500. In some embodiments, when the mandrel 210 moves towards the proximal end, the mandrel 210 drives the clamp 400 to move towards the proximal end relative to the receiving tube 500, and the clamp 400 closes. In some embodiments, after the clamp 400 is closed, the clamp 400 can be further locked to restrict the movement of the clamp 400 relative to the outer wall of the receiving tube 500 towards the distal end, so that the clamp 400 remains closed and is in a locked state. That is, the locked state can be a state in which the clamp 400 is closed and the movement of the clamp 400 relative to the outer wall of the receiving tube 500 is restricted. In some embodiments, the position of the clamp 400 when it is in the locked state can be defined as a first position. In some embodiments, the clamp 400 may include a locked portion, and the receiving tube 500 may include a locking portion. In some embodiments, the movement of the locking portion relative to the outer wall of the receiving tube towards the distal end is restricted. In some embodiments, the locking part can be connected to the outer wall of the receiving tube 500 (e.g., a fixed connection or a detachable connection) to restrict the movement of the locking part relative to the outer wall of the receiving tube 500 toward the distal end. Through the cooperative relationship between the locking part and the locked part, the receiving tube 500 can restrict the movement of the clamp 400, thereby locking the clamp 400. In some embodiments, the movement restriction of the clamp 400 by the receiving tube 500 means that the receiving tube 500 can limit the tendency of the clamp 400 to move toward the distal end relative to the outer wall of the receiving tube 500. In some embodiments, by keeping the clamp 400 in the locked state, the clamp 400 can continuously clamp human tissue to achieve hemostasis and ligation.

[0131] In some embodiments, the locked state of the clip 400 can be released. After the locked state is released, the clip 400 can move towards the distal end relative to the outer wall of the receiving tube 500, and the clip 400 can be reopened. At this time, the clip 400 switches from the locked state to the unlocked state. That is, the unlocked state can be a state in which the movement restriction of the clip 400 relative to the outer wall of the receiving tube 500 is released, and the clip 400 can be opened. In some embodiments, the position of the clip 400 when switching from the locked state to the unlocked state can be defined as the second position. In some embodiments, the movement restriction of the clip 400 relative to the outer wall of the receiving tube 500 can be a restriction that prevents the clip 400 from moving towards the distal end relative to the outer wall of the receiving tube 500. In some embodiments, after the clip 400 switches from the locked state to the unlocked state, the clip 400 can release the clamped human tissue, thereby detaching the clip device 10 from the human tissue.

[0132] In some embodiments, the clamping device 100 may further include a disassembly device 700 for switching the clamp 400 from a locked state to an unlocked state. In some embodiments, the disassembly device 700 may be a clamp, biopsy forceps, snare, energy device, or a specialized disassembly device, etc., capable of providing disassembly functionality. The disassembly device 700 can approach the clamping device 10 through the endoscopic forceps channel and apply force to relevant components of the clamping device 10 (including but not limited to the locked part, or the locking part, or the first connecting part where the clamp is connected to the locked part, or the second connecting part where the receiving tube 500 is connected to the locking part), causing the relevant components to deform, break, or displace, ultimately completing the unlocking operation. In some embodiments, the disassembly device 700 may apply force to the target component in a manner that includes applying pressure radially inward, or first contacting the target component radially inward and then applying axial force, or applying axial force. More details on how the disassembly device 700 completes the unlocking operation of the clamping device 10 can be found elsewhere in this specification.

[0133] In some embodiments, such as Figure 4 , Figure 5 As shown, the proximal end of the first clamping arm 410 is provided with a first bent portion 411 that bends towards the second clamping arm 420, and the first bent portion 411 is provided with a first hole 412. The proximal end of the second clamping arm 420 is provided with a second bent portion 421 that bends towards the first clamping arm 410, and the second bent portion 421 is provided with a second hole 422. In some embodiments, the bending angle between the first bent portion 411 and the first clamping arm 410 is 85°~95°, and the bending angle between the second bent portion 421 and the second clamping arm 420 is 85°~95°. In some embodiments, the sum of the bending angles of the first bent portion 411 and the second bent portion 421 is 180°. In some embodiments, at least a portion of the first hole 412 and the second hole 422 overlaps and communicates, and the overlapping and communicating portion of the first hole 412 and the second hole 422 constitutes a socket hole 432. The term "at least partially" overlap includes partial overlap and connection, and complete overlap and connection. Partial overlap and connection means that the first hole 412 and the second hole 422 are slightly offset and do not completely overlap. Complete overlap and connection means that the first hole 412 completely overlaps the area of ​​the second hole 422, or the second hole 422 completely overlaps the area of ​​the first hole 412. Overlap can be understood as the two holes being interconnected. After the first hole 412 and the second hole 422 are connected, the connected portion of the first hole 412 and the second hole 422 constitutes the socket hole 432. In some embodiments, the socket hole 432 can also be constructed in other ways, and is a hole with a snap-fit ​​space.

[0134] In some embodiments, the first clamping arm 410 and the second clamping arm 420 are elastic. When no force is applied, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 move away from each other, and the clamp 400 is in an open (or unopened) state. In some embodiments, when the clamp moves towards the proximal end relative to the receiving tube, the first clamping arm 410 and the second clamping arm 420 gradually retract into the channel of the receiving tube 500. Due to the limiting effect of the channel of the receiving tube 500, the distal ends of the first clamping arm 410 and the second clamping arm 420 move closer to each other, and the clamp closes. In some embodiments, when the clamp moves towards the distal end relative to the receiving tube, the first clamping arm 410 and the second clamping arm 420 withdraw from the receiving tube 500. The first clamping arm 410 and the second clamping arm 420 are no longer limited by the receiving tube 500, and the distal ends of the first clamping arm 410 and the second clamping arm 420 move away from each other under the action of elastic force, and the clamp opens.

[0135] In some embodiments, see Figure 4 and Figure 5 The clamp 400 may further include a connecting pin 601, through which the first clamping arm 410 and the second clamping arm 420 are pinned together. In some embodiments, one end of the connecting pin 601 constitutes a locking portion 602. In some embodiments, both ends of the connecting pin 601 constitute locking portions 602.

[0136] In some embodiments, see Figure 4 and Figure 5 The axial direction of the connecting pin 601 can be set parallel to the direction in which the first clamping arm 410 and the second clamping arm 420 are far apart (i.e., the opening direction of the clamping arms). In some embodiments, the first clamping arm 410 and the second clamping arm 420 are provided with pin holes, and the connecting pin 601 passes through the pin holes and is pinned to the first clamping arm 410 and the second clamping arm 420. In some embodiments, the two ends of the connecting pin 601 passing through the first clamping arm 410 and the second clamping arm 420 toward the receiving tube 500 form a locked part. In some embodiments, the clamp 400 further includes an elastic ring 402, which is sleeved outside the connecting pin 601 and located between the first clamping arm 410 and the second clamping arm 420. When the first clamping arm 410 and the second clamping arm 420 are closed, the elastic ring 402 is compressed by the first clamping arm 410 and the second clamping arm 420, providing elastic force. The direction of the elastic force of the elastic ring 402 is the direction that causes the first clamping arm 410 and the second clamping arm 420 to move away from each other when the elastic ring 402 is in contact with the first clamping arm 410. Preferably, the elastic ring 402 is a coiled spring, which is sleeved outside the connecting pin 601 by its coil.

[0137] In some embodiments, see Figure 7 and Figure 8The axial direction of the connecting pin 601 can also be set in a direction perpendicular to the direction in which the first clamping arm 410 and the second clamping arm 420 are far apart (i.e., the opening direction of the clamping arms). For example... Figure 7 and Figure 8 As shown, in some embodiments, the clip 400 includes a connecting pin 601, the proximal ends of the first clamping arm 410 and the second clamping arm 420 forming a receiving space, the connecting pin 601 extending radially through the receiving space, and the connecting pin 601 being connected to the first clamping arm 410 and the second clamping arm 420 respectively via a pin fixing portion 603. In some embodiments, one end of the connecting pin 601 constitutes a locking portion 602. In some embodiments, both ends of the connecting pin 601 constitute locking portions 602.

[0138] In some embodiments, the first clamping arm 410 and the second clamping arm 420 may not be elastic, and the first clamping arm 410 and the second clamping arm 420 may be opened and closed by providing a guide structure. In some embodiments, the guide structure may include, but is not limited to, a groove or a linkage structure.

[0139] In some embodiments, the proximal ends of the first clamping arm 410 and the second clamping arm 420 are provided with sliding grooves, and the receiving tube 500 includes a pin, which is fixedly connected to the receiving tube 500. In some embodiments, the pin is disposed within the sliding groove, and the sliding groove can slide relative to the pin. In some embodiments, the sliding groove at the proximal end of the first clamping arm 410 can be a first sliding groove, and the sliding groove at the proximal end of the second clamping arm 420 can be a second sliding groove. In some embodiments, the extending directions of the first and second sliding grooves are not parallel to the axial direction of the receiving tube. In some embodiments, the sliding grooves of the first clamping arm 410 and the second clamping arm 420 are symmetrically arranged with respect to the axial direction of the receiving tube 500. In some embodiments, the pin can be arranged along the diameter direction of the receiving tube 500, and the pin passes through the first and second sliding grooves. In some embodiments, when the clamp 400 moves relative to the outer wall of the receiving tube 500 along the axial direction of the receiving tube 400, the first and second sliding grooves slide relative to the pin, thereby realizing the opening and closing of the clamping arms. For more details on how the sliding grooves and pins cooperate to realize the opening and closing of the clamping arms, please refer to the description elsewhere in this specification.

[0140] In some embodiments, see Figures 11-15The clip 400 includes a linkage structure 605. In some embodiments, the linkage structure 605 may include a four-bar linkage, comprising a first distal bar and a second distal bar at the distal end, and a first proximal bar and a second proximal bar at the proximal end. In some embodiments, a first clamping arm 410 and a second clamping arm 420 are hinged, with the portion of the first clamping arm 410 near the hinge point forming the first distal bar, and the portion of the second clamping arm 420 near the hinge point forming the second distal bar. In some embodiments, the distal end of the first proximal bar is hinged to the first clamping arm, the distal end of the second proximal bar is hinged to the second clamping arm, and the proximal end of the first proximal bar is hinged to the proximal end of the second proximal bar. In some embodiments, each hinge point of the linkage structure may be connected by a connecting pin. In some embodiments, the clip 400 may further include a pull rod, the distal end of which is connected to a hinge point at the proximal end of the linkage structure 605. In some embodiments, the proximal end of the pull rod may be connected to a spindle 210. In some embodiments, when the pull rod drives the connecting rod structure 605 to move from the distal end to the proximal end, the connecting rod structure 605 drives the clamping arm to close.

[0141] like Figures 11 to 15 As shown, the proximal ends of the first clamping arm 410 and the second clamping arm 420 are connected by a connecting rod structure 605. When the pull rod 606 drives the connecting rod structure 605 to move from the distal end to the proximal end, the angle between the first proximal rod and the second proximal rod decreases, thereby reducing the angle between the first clamping arm and the second clamping arm, causing the first clamping arm 410 and the second clamping arm 420 to close. Figure 12 As shown, the clamp is in the open position, and the lever 606 has not moved towards the proximal end. Figure 13 As shown, the lever 606 moves from the far end to the near end, at which point the clamp is in the closed state.

[0142] In some embodiments, the clamp 400 may not include a pull rod. A sleeve hole for connecting the spindle 210 is provided near the hinge point between the proximal ends of the first and second proximal rods. This sleeve hole can be a hole formed in the connecting pin at the hinge point. In some embodiments, the spindle 210 can be directly connected to the proximal end of the connecting rod structure 605 through the sleeve hole, enabling the spindle 210 to drive the connecting rod structure 605 to move from the distal end to the proximal end. In some embodiments, when the spindle 210 drives the connecting rod structure 605 to move from the distal end to the proximal end, the angle between the first and second proximal rods decreases, thereby reducing the angle between the first clamping arm 410 and the second clamping arm 420, causing the first clamping arm 410 and the second clamping arm 420 to gradually close.

[0143] In some embodiments, see Figure 9 and Figure 10The receiving tube 500 may include a first receiving tube 501 and a second receiving tube 502. At least a portion of the second receiving tube 502 is fitted within the channel of the first receiving tube 501, and the outer wall of the first receiving tube 501 constitutes the outer wall of the receiving tube 500. In some embodiments, the second receiving tube 502 and the first receiving tube 501 may be manufactured separately from two tube structures and then assembled together, or the second receiving tube 502 and the first receiving tube 501 may be separately machined from a single tube structure. In some embodiments, the material of the first receiving tube 501 may include, but is not limited to, stainless steel, titanium, tantalum, platinum, palladium, etc. In some embodiments, the material of the second receiving tube 502 may include, but is not limited to, stainless steel, titanium, tantalum, platinum, palladium, etc. In some embodiments, the material of the first receiving tube 501 may be the same as the material of the second receiving tube 502. In some embodiments, the material of the first receiving tube 501 may also be different from the material of the second receiving tube 502. For example, the first receiving tube 501 may use a high-strength titanium metal material, and the second receiving tube 502 may use a high-toughness stainless steel material.

[0144] like Figure 9 As shown, in some embodiments, the distal end of the receiving tube 500 is provided with a blocking part 513, which extends into the channel of the receiving tube 500. The blocking part 513 is located at the distal end of the connecting pin 601. Due to the obstruction of the blocking part 513, the clip 400 can be prevented from coming off the distal end of the receiving tube 500.

[0145] like Figure 10 As shown, in some embodiments, to facilitate the movement of the clip 400 relative to the receiving tube 500, the receiving tube 500 is provided with a guide groove 503 along the axial direction. In some embodiments, the guide groove 503 may be formed on the second receiving tube 502, for example, the guide groove 503 may be laser-cut into the side wall of the second receiving tube 502. In some embodiments, the connecting pin 601 can slide within the guide groove 503, the locked part 602 can extend into the guide groove 503, and the guide groove 503 can guide the locked part 602 to move to a locking position that cooperates with the locking part 511.

[0146] In some embodiments, to limit the movement of the clip 400 relative to the receiving tube 500 and to lock the clip 400, the clip 400 may include a locking portion, and the receiving tube 500 may include a locking portion. The locking portion may be a component on the receiving tube 500 that engages with the locking portion to limit the movement of the clip 400 relative to the receiving tube 500 toward its distal end. In some embodiments, the locking portion may be a spring, groove, pin, or other structure or component on the receiving tube 500. The locking portion may be a structure or component on the clip 400 that engages with a spring, groove, pin, or other structure or component. In some embodiments, the locking portion may be a protrusion, connecting pin, elastic blocking piece, or other structure or component.

[0147] In some embodiments, the locking part and the locking part can be in a one-to-one correspondence: for example, the locking part is a protrusion provided on the clip 400, and the locking part is a spring piece provided on the storage tube 500; for example, the locking part is a protrusion provided on the clip 400, and the locking part is a groove provided on the storage tube 500; for example, the locking part is a connecting pin provided on the clip 400, and the locking part is a spring piece provided on the storage tube 500; for example, the locking part is a connecting pin provided on the clip 400, and the locking part is a groove provided on the storage tube 500; for example, the locking part is an elastic blocking member provided in the slide groove on the clip 400, and the locking part is a pin provided on the storage tube 500; for example, the locking part is a connecting pin provided near the end of the connecting rod structure 605, and the locking part is a spring piece provided on the storage tube 500; for example, the locking part is a protrusion provided near the end of the connecting rod structure 605, and the locking part is a spring piece provided near the end of the connecting rod structure 605. When the locked part or (and) the locking part is subjected to force, it deforms, breaks, or shifts, and the cooperation between the locked part and the locking part is released.

[0148] In some embodiments, since the movement of the locking part relative to the outer wall of the storage tube 500 toward the distal end is restricted, when the locked part and the locking part are engaged, the movement of the clip relative to the outer wall of the storage tube 500 toward the distal end is also restricted. That is, the storage tube 500 restricts the movement of the clip 400, so that the clip 400 is in a locked state.

[0149] In some embodiments, when the movement restriction of the clip 400 relative to the outer wall of the storage tube 500 toward the distal end is released, the clip 400 can move toward the distal end relative to the storage tube 500, and the clamp arm can be reopened, that is, the clip 400 switches from the locked state to the unlocked state, also referred to as the clip 400 switching from the first position to the second position.

[0150] In some embodiments, the engagement between the locking part and the locked part is released, thereby releasing the movement restriction of the storage tube 500 on the clip 400, and the clip 400 switches from the locked state to the unlocked state. In some embodiments, the engagement between the locked part and / or the locking part is released due to deformation, breakage, or displacement caused by force.

[0151] In some embodiments, the release of the connection between the locked part and the clamping arm releases the movement restriction of the clamp 400 by the receiving tube 500, and the clamp 400 switches from a locked state to an unlocked state. In some embodiments, the release of the connection between the locked part and the clamping arm causes the clamp 400 to change from a first position (the distal ends of the first and second clamping arms remain closed) to a second position (the distal ends of the first and second clamping arms reopen). The connection method between the locked part and the clamping arm is adapted to different connection and release methods. For example, if the locked part is a protrusion provided at the clamping arm, the connection between the locked part and the clamping arm is integrally formed, and the connection between the locked part and the clamping arm is released when the protrusion breaks; if the locked part is a connecting pin provided at the clamp 400, the first clamping arm 410 and the second clamping arm 420 are connected by a connecting pin 601, and the first clamping arm 410 and / or When the first connecting part where the second clamping arm 420 abuts against the connecting pin 601 deforms, the connection between the locked part and the clamping arm is released; if the locked part is the connecting pin 601 located at the clamping arm, the proximal ends of the first clamping arm 410 and the second clamping arm 420 form a receiving space, and the connecting pin 601 extends radially through the receiving space. When the first connecting part where the connecting pin 601 engages with the first clamping arm 410 and the second clamping arm 420 is displaced, the connection between the locked part and the clamping arm is released; if the locked part is a blocking member located in the groove at the clamping arm, and the blocking member is fixedly connected to the groove at the clamping arm, the connection between the locked part and the clamping arm is released when the blocking member breaks.

[0152] In some embodiments, the release of the movement restriction of the locking part relative to the outer wall releases the movement restriction of the storage tube 500 on the clip 400, allowing the clip 400 to switch from a locked state to an unlocked state. In some embodiments, the connection between the locking part and other positions of the storage tube 500 is released, releasing the movement restriction of the locking part relative to the outer wall, and the clip changes from a first position (the distal ends of the first and second clamping arms remain closed) to a second position (the distal ends of the first and second clamping arms reopen). The connection method between the locking part and the storage tube is adapted to different connection and release methods. For example, if the locking part is a spring clip, the second storage tube 502 and the first storage tube 501, which are equipped with spring clips, are connected by a hook part and a hook groove. If the hook relationship between the hook part and the hook groove is released, the connection relationship between the locking part and the storage tube 500 is released. If the locking part is a pin on the storage tube 500, and the pin retracts radially, the connection relationship between the pin and the storage tube 500 is released, thus the connection relationship between the locking part and the storage tube is released.

[0153] See Figures 16-25The working process of the clamp device 10 is described. The working process of the clamp device 10 includes, but is not limited to, the following steps, and the order of some steps may be adjusted according to actual conditions, and some steps may be repeated. The terms "clamp in locked state" and "clamp in unlocked state" are for illustrative purposes only and do not represent that the clamp is initially in a "locked state" or that it is ultimately in an "unlocked state." They are only used to illustrate the unlocking method that causes the clamp to change from a "locked state" to an "unlocked state." When the clamp is in the locked state, the distal ends of the first and second clamp arms remain closed; when the clamp is in the unlocked state, the distal ends of the first and second clamp arms reopen.

[0154] In some embodiments, the locking part deforms, breaks, or displaces under force, thereby releasing the engagement between the locking part and the locked part. In some embodiments, the force on the locking part can be applied by the disassembly device 700. Figures 16-25 As shown, in some embodiments, the clip 400 is in an unlocked state, and the locking part 511 is radially deformed, broken, or displaced.

[0155] like Figure 16 and Figure 17 As shown, in some embodiments, the clamp device 10 may include a limiting protrusion 520, and the conveying device 20 may include a limiting recess 202. The limiting protrusion 520 may be a component for cooperating with the limiting recess 202 to restrict the movement of the clamp device 10. In some embodiments, the clamp 400 is in an open state, and the limiting protrusion 520 of the clamp device 10 and the limiting recess 202 of the conveying device 20 cooperate to achieve external connection, while the socket hole 432 of the clamp device 10 and the large-diameter portion 212 of the connecting end 211 cooperate to achieve internal connection. The movement of the mandrel 210 from proximal to distal end drives the clamp 400 to move from proximal to distal end, causing the distal ends of the first clamp arm 410 and the second clamp arm 420 to move away from each other, and the first clamp arm 410 and the second clamp arm 420 to move closer to the tissue 300.

[0156] In some embodiments, the locking part 511 includes a spring piece 510, which may be disposed on the outer wall of the receiving tube 500. In some embodiments, the spring piece 510 includes a first end 510A, a second end 510B, and a third end 510C. The first end 510A is fixedly connected to the first receiving tube 501, the second end 510B is disposed near the proximal end of the first end 510A, and the third end 510C is disposed far from the first end 510A. The second end 510B constitutes the locking part. In some embodiments, the number of spring pieces 510 may include two, and the two spring pieces 510 may be symmetrically arranged along the circumference of the outer wall of the receiving tube 500.

[0157] In some embodiments, the locking portion 602 may include a connecting pin 601. See also: Figures 4-7 The clamp 400 includes a first clamping arm 410, a second clamping arm 420, and a connecting pin 601. The first and second clamping arms are connected by the connecting pin 601, and the two ends of the connecting pin 601 form a locking portion 602. See also the following embodiments: Figures 11-15 The clamp 400 includes a first clamping arm 410, a second clamping arm 420, and a linkage structure 605. The proximal and / or distal hinge points of the linkage structure 605 include connecting pins. In some embodiments, the connecting pin located at the proximal hinge point of the linkage structure 605 (i.e., the hinge point between the proximal ends of the first and second proximal rods) can constitute a locking portion 602. In some embodiments, the connecting pin located at the distal hinge point of the linkage structure 605 (i.e., the hinge point between the first and second clamping arms) can constitute a locking portion 602. In some embodiments, the clamp 400 further includes a pull rod connected to the linkage structure 605. The pull rod and the proximal end of the linkage structure 605 can be connected via a connecting pin, which can constitute a locking portion 602.

[0158] like Figure 18 and Figure 19 As shown, in some embodiments, the clamp 400 is in a closed state. The limiting protrusion 520 of the clamp device 10 and the limiting recess 202 of the conveying device 20 cooperate to achieve an external connection, and the socket hole 432 of the clamp device 10 and the large-diameter portion 212 of the connecting end 211 cooperate to achieve an internal connection. The clamp 400 changes from an open state to a closed state as follows: the mandrel 210 moves from the distal end to the proximal end, causing the clamp 400 to move from the distal end to the proximal end, so that the distal ends of the first clamp arm 410 and the distal ends of the second clamp arm 420 come closer to each other, and the distal ends of the first clamp arm 410 and the distal ends of the second clamp arm 420 clamp the tissue 300. The connecting pin 601 moves from the distal end to the proximal end within the channel of the receiving tube 500. The two ends of the connecting pin 601 (i.e., the locked portions 602) are not yet located near the proximal end of the second end 510B of the spring clip (locking portion 511), meaning the locked portions 602 and 511 are not yet engaged. Thus, the clamp 400 is only closed but not locked. At this time, if the tissue 300 held by the distal ends of the first clamping arm 410 and the second clamping arm 420 is not properly positioned, the mandrel 210 can be pushed from the proximal end to the distal end, causing the distal ends of the first clamping arm 410 and the second clamping arm 420 to move away from each other, thus changing the clamp 400 from a closed state to a reopened state.

[0159] In some embodiments, the first receiving tube 501 includes a spring piece 510, which includes a first end 510A, a second end 510B, and a third end 510C. The first end 510A is fixedly connected to the outer wall of the first receiving tube 501. The second end 510B is located near the first end 510A, and the third end 510C is located far from the first end 510A. The second end 510B forms a locking portion. In some embodiments, when the clip 400 is in the locked state, the second end 510B extends into the channel, and the third end 510C extends out of the outer wall. When the clip 400 switches from the locked state to the unlocked state, the second end 510B extends out of the outer wall, and the third end 510C extends into the channel. In some embodiments, the first clamping arm 410 and the second clamping arm 420 are connected by a connecting pin 601, the two ends of which form a locked portion 602. Figures 20-21 As shown, in some embodiments, the clamp 400 is in a locked state, and the connection between the clamp device 10 and the delivery device 20 is released. In some embodiments, releasing the connection between the clamp device 10 and the delivery device 20 may include releasing the external connection between the limiting protrusion 520 of the clamp device 10 and the limiting recess 202 of the delivery device 20. In some embodiments, releasing the connection between the clamp device 10 and the delivery device 20 may also include releasing the internal connection between the socket hole 432 of the clamp device 10 and the large diameter portion 212 of the connecting end 211. When the clamp 400 is in the locked state, the clamp 400 is fixed at the tissue 300, and the delivery device 20 is withdrawn through the endoscopic forceps channel. The clamp 400 changes from a closed state to a locked state as follows: the spindle 210 moves from the distal end to the proximal end, causing the clamp 400 to move from the distal end to the proximal end. The connecting pin 601 moves from the distal end to the proximal end within the channel of the receiving tube 500. Both ends of the connecting pin 601 (i.e., the locked portions 602) pass over the second end 510B (locking portion 511) of the spring and are located near the proximal end of the second end 510B (locking portion 511). The second end 510B (locking portion 511) of the spring extends into the channel of the receiving tube 500, and the third end 510C of the spring extends out of the channel of the receiving tube 500. The radial distance between the second end 510B (locking part 511) of the spring is less than the radial distance between the locked part 602. Therefore, the connecting pin 601 is blocked by the second end 510B (locking part 511), which obstructs the axial movement of the clamp 400 from the proximal end to the distal end. That is, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 remain closed, i.e., the clamp 400 is in a locked state. When the clamp 400 is in the locked state, the second end of the spring extends into the channel, and the third end of the spring extends out of the outer wall. The two ends of the connecting pin 601 (i.e., the locked part 602) and the second end 510B (locking part 511) of the spring cooperate with each other, and the storage tube 500 restricts the movement of the clamp 400, keeping the distal ends of the first clamping arm 410 and the second clamping arm 420 closed.

[0160] like Figures 22-23 As shown, in some embodiments, the clamp 400 is in a state awaiting removal. The removal device 700 enters through the endoscope channel. The first removal arm 701 and the first removal arm 702 of the removal device 700 open and approach the unlocking part 512 of the clamp 400, which is already in a locked state.

[0161] In some embodiments, after the clip 400 is in a locked state, the clip 400 can be switched from a locked state to an unlocked state by releasing the engagement between the locking part 511 and the locked part 602.

[0162] In some embodiments, deformation, breakage, or displacement of the locking part 511 may disengage the locking part 511 from the locked part 602.

[0163] like Figures 24-25 As shown, in some embodiments, the clip 400 is in a reopened state, i.e., the clip 400 is in an unlocked state. The operation of changing the clip from a locked state to an unlocked state is as follows: the first disassembly arm 701 and the second disassembly arm 702 apply radial inward force to the third end 510C (unlocking part 512) of the spring piece, and the third end 510C of the spring piece changes from a state extending out of the channel of the receiving tube 500 to a state extending into the channel of the receiving tube 500, thereby driving the second end 510B of the spring piece to move radially outward, i.e., the second end 510B of the spring piece changes from a state extending into the channel of the receiving tube 500 to a state extending out of the channel of the receiving tube 500. When the third end 510C of the spring is subjected to a radial force toward the interior of the receiving tube, it extends into the channel of the receiving tube 500. The second end 510B (locking part 511) of the spring extends out of the outer wall of the channel of the receiving tube 500. The distance between the two ends of the connecting pin 601 (i.e., the locked parts 602) is less than the distance between the second ends 510B (locking parts 511), and the engagement between the second end 510B (locking part 511) and the two ends of the connecting pin 601 (i.e., the locked parts 602) is released, and the movement restriction of the clip 400 by the receiving tube 500 is released. In some embodiments, the locked parts 602 are protrusions located at the distal end of the first clamping arm 410 and the proximal end of the second clamping arm 420, and the distance between the locked parts 602 is the distance between the protrusions. When the clip 400 is in the unlocked state, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 move away from each other, that is, the clip 400 changes from the closed state to the reopened state.

[0164] In some embodiments, deformation, breakage, or displacement of the locked portion 602 of the clip 400 may disengage the locking portion 511 and the locked portion 602.

[0165] In some embodiments, the locked portion 602 includes a connecting pin 601, which is connected to the clamping arm; the connecting pin is compressed radially along the receiving tube under force, thereby releasing the engagement between the locking portion 511 and the locked portion 602. Figures 26-27As shown, in some embodiments, the locking part 511 may include a spring piece 510. In some embodiments, the spring piece 510 includes a first end 510A and a second end 510B, the first end 510A being fixedly connected to the receiving tube 500; the second end 510B extending into the channel of the receiving tube 500. In some embodiments, see... Figures 23-25 The spring sheet may also include a first end 510A, a second end 510B, and a third end 510C, wherein the first end 510A is fixedly connected to the first receiving tube 501, the second end 510B is located near the first end 510A, and the third end 510C is located far from the first end 510A. In some embodiments, the second end 510B constitutes a locking part 511. In some embodiments, the number of spring sheets 510 may include two, and the two spring sheets 510 may be symmetrically arranged along the circumference of the outer wall of the receiving tube 500. In some embodiments, the receiving tube 500 may also not include spring sheets 510, but instead has a groove facing the distal end provided on the outer wall of the receiving tube 500, the groove constituting a locking part. In some embodiments, the number of grooves may include two, and the two grooves may be symmetrically arranged along the circumference of the outer wall of the receiving tube 500.

[0166] In some embodiments, the clip 400 includes a connecting pin 601, which can deform along its own axial direction to change its length along the axial direction. In some embodiments, one end of the connecting pin 601 constitutes a locking portion 602. In some embodiments, both ends of the connecting pin 601 constitute locking portions 602. In some embodiments, the connecting pin 601 includes a movable end disposed at both ends of the connecting pin 601 and a spring 604 connecting the movable end. The movable end can be compressed along the axial direction of the connecting pin 601 (or the radial direction of the receiving tube 500) to compress the spring 604, so that the radial dimension of the connecting pin 601 along the receiving tube 500 is smaller than the spacing of the locking portions 511 (e.g., the spacing between the second ends 510B of the two spring pieces, or the spacing between the two grooves). Figure 28 As shown, the connecting pin 601 includes a spring 604. When the spring 604 is subjected to radially inward compressive force, it contracts radially inward, and the radial distance between the movable end (locked part 602) of the spring 604 becomes smaller. The radial distance between the movable end (locked part 602) of the spring 604 is smaller than the distance between the locking part 511 (e.g., the second end 510B of the spring piece), and the clip 400 changes from the locked state to the unlocked state.

[0167] In some embodiments, such as Figures 29-32 As shown, the clip 400 changes from a locked state (the clip 400 is locked and waiting to be removed) to an unlocked state (the clip 400 is reopened).

[0168] like Figures 29-30As shown, in some embodiments, the clamp 400 is in a locked state, the external connection between the limiting protrusion 520 of the clamp device 10 and the limiting recess 202 of the delivery device 20 is released, the internal connection between the sleeve hole 432 of the clamp device 10 and the large diameter portion 212 of the connecting end 211 is released, the clamp 400 is fixed at the tissue 300, and the delivery device 20 is withdrawn through the endoscopic forceps channel. The clamp 400 changes from a closed state to a locked state as follows: The spindle 210 moves from the distal end to the proximal end, causing the clamp 400 to move from the distal end to the proximal end. The connecting pin 601 moves from the distal end to the proximal end within the channel of the receiving tube 500. The two ends of the connecting pin 601 (i.e., the locked part 602) pass over the second end 510B (locking part 511) of the spring and are located near the second end 510B (locking part 511). The second end 510B (locking part 511) of the spring extends into the channel of the receiving tube 500. The radial distance H of the second end 510B (locking part 511) of the spring is less than the radial distance D1 of the locked part 602. Therefore, the connecting pin 601 is blocked by the second end 510B (locking part 511), which obstructs the axial movement of the clamp 400 from the proximal end to the distal end. That is, the distal ends of the first clamp arm 410 and the second clamp arm 420 remain closed, i.e., the clamp 400 is in a locked state. When the clip 400 is locked, the two ends of the connecting pin 601 (i.e., the locked portion 602) and the second end 510B of the spring (locking portion 511) cooperate with each other, and the distal ends of the first clamping arm 410 and the second clamping arm 420 remain closed. In some embodiments, when the spindle 210 moves from the distal end to the proximal end, causing the clip 400 to move from the distal end to the proximal end, the connecting pin 601 can be in a compressed state within the channel of the receiving tube 500. At this time, the radial length of the connecting pin 601 along the receiving tube is less than the initial radial length of the connecting pin 601 when it is not compressed. In some embodiments, when the connecting pin 602 moves towards the proximal end and passes the locking portion 511 (e.g., the second end 510B of the spring, or the groove on the outer wall of the receiving tube), the compression of the connecting pin by the receiving tube is released, and the connecting pin 601 returns to its initial length. In some embodiments, the initial length of the connecting pin 601 is greater than the radial distance H of the locking portion 511, and the locking portion 511 can block the connecting pin 602, thereby restricting the axial movement of the clip 400 from the proximal end to the distal end.

[0169] When it is necessary to remove the clamp, the removal device 700 enters through the endoscope clamp channel. The first removal arm 701 and the first removal arm 702 of the removal device 700 open and approach the unlocking part 512 of the clamp 400, which is already in the locked state.

[0170] like Figures 31-32As shown, in some embodiments, the clip 400 is in a reopened state, i.e., the clip is in an unlocked state. The first disassembly arm 701 and the second disassembly arm 702 apply radial inward force to the locked part 602 (such as the movable end of the connecting pin 601) through the unlocking part 512. When the spring 604, which abuts against the locked part 602, is subjected to radial inward compressive force, it contracts radially inward, i.e., the radial distance between the locked parts 602 decreases; the radial distance D2 between the locked parts 602 is less than the distance H between the locking parts 511, and the clip 400 changes from a locked state to an unlocked state. In some embodiments, the locking part 511 is a locking groove provided in the receiving tube. When the clip 400 is in the unlocked state, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 move away from each other, i.e., the clip 400 changes from a closed state to a reopened state.

[0171] In some embodiments, the clamping arm includes a protrusion located at the proximal end of the clamping arm. The protrusion may be a component for engaging with a locking groove to achieve a locking state. The protrusion may constitute a locked portion. When the protrusion is subjected to force, it undergoes radial displacement along the receiving tube, thereby releasing the engagement between the locking portion and the locked portion.

[0172] In some embodiments, the protrusions include a first protrusion located near the proximal end of the first clamping arm 410 and a second protrusion located near the proximal end of the second clamping arm 420, the first and second protrusions being radially spaced apart from each other; the receiving tube 500 is provided with a locking groove, the locking groove forming a locking portion 511; after the first and second protrusions extend into the locking groove, the locking portion 511 and the locked portion 602 engage with each other; after the first and second protrusions exit the locking groove, the engagement between the locking portion 511 and the locked portion 602 is released. In some embodiments, the clamp 400 further includes a sliding groove located near the proximal end of the clamping arm, and the receiving tube 500 further includes a pin, the sliding groove being slidably connected to the pin.

[0173] like Figures 33-36 As shown, in some embodiments, the proximal end of the clamping arm is provided with a groove 440, and the receiving tube 500 includes a pin 550, which is fixedly connected to the receiving tube 500. In some embodiments, the pin 550 passes through the groove 440, and the extending direction of the groove 440 is not parallel to the axial direction of the receiving tube. In some embodiments, the groove of the first clamping arm 410 (such as the first groove) and the groove of the second clamping arm 420 (such as the second groove) are symmetrically arranged with respect to the axis of the receiving tube. The proximal ends of the first clamping arm 410 and the second clamping arm 420 are subjected to an axial pulling force from the distal end to the proximal end. The groove 440 moves from the distal end to the proximal end relative to the pin 550, and the distal ends of the first clamping arm 410 and the second clamping arm 420 gradually approach each other.

[0174] like Figures 35-36As shown, in some embodiments, the storage tube 500 is provided with a locking groove 560, which constitutes a locking portion 511. In some embodiments, the locking groove 560 may be a groove, notch, or slit structure formed on the outer wall of the storage tube 500. In some embodiments, the first clamping arm 410 and the second clamping arm 420 are provided with a first protrusion 461 and a second protrusion 462, which constitute a locked portion 602. Figure 42 As shown, the locking groove 560 (locking part 511) cooperates with the first protrusion 461 and the second protrusion 462 (locked part 602) to restrict the movement of the clip 400 relative to the outer wall of the storage tube 500 towards the distal end, keeping the distal ends of the first clamping arm 410 and the second clamping arm 420 closed, that is, the clip 400 is in a locked state. Figure 43 As shown, the first protrusion 461 and the second protrusion 462 (locked part 602) are subjected to radial inward squeezing force, the locking groove 560 (locking part 511) and the first protrusion 461 and the second protrusion 462 (locked part) are released from their mutual cooperation, the storage tube 500 releases the movement restriction on the clamp, the clamp 400 is in the unlocked state, so that the distal end of the first clamp arm 410 and the distal end of the second clamp arm 420 can move away from each other, that is, the clamp 400 changes from the closed state to the reopened state.

[0175] In some embodiments, see Figures 37-42 The clip 400 includes a first clamping arm 410, a second clamping arm 420, and a connecting pin 601. The proximal ends of the first clamping arm 410 and the second clamping arm 420 are respectively provided with elastic first protrusions 461 and 462, which together form a locking portion 602. The connecting pin 601 passes through a connecting hole 504 penetrating the proximal ends of the first clamping arm 410 and the second clamping arm 420, allowing the proximal ends of the first clamping arm 410 and the second clamping arm 420 to be retracted into the channel of the receiving tube 500. In some embodiments, when the clip 400 moves proximal to the outer wall of the receiving tube 500, the first clamping arm 410 and the second clamping arm 420 are compressed by the outer wall of the receiving tube, causing the distal ends of the first clamping arm 410 and the second clamping arm 420 to approach each other, thus closing the clip 400. In some embodiments, when the clip 400 moves toward the distal end relative to the outer wall of the storage tube 500, the squeezing effect of the outer wall of the storage tube on the first clamping arm 410 and the second clamping arm 420 gradually disappears, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 move away from each other, and the clip 400 can be reopened.

[0176] In some embodiments, the proximal ends of the first clamping arm 410 and the second clamping arm 420 are releasably connected to a connecting piece 214 disposed within the conveying device 20. The connecting piece 214 causes the proximal ends of the first clamping arm 410 and the second clamping arm 420, which tend to move away from each other, to come closer together under the pressure of the connecting piece 214. In some embodiments, such as Figures 42-44 As shown, the conveying device 20 includes a sheath 200 and a spindle 210 disposed within a channel of the sheath 200. A connecting piece 214 is fixedly provided at the distal end of the spindle 210. In some embodiments, there are two connecting pieces 214. In some embodiments, the two connecting pieces 214 are releasably connected to the connecting pin 601. The two connecting pieces 214 respectively press the first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 radially inward, so that the first protrusion 461 and the second protrusion 462 remain in a close-to-each-other state. When the connecting piece 214 is subjected to sufficient tension, the connecting piece 214 deforms or breaks and separates from the connecting pin 601. The first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 rebound radially outward due to elastic recovery. In some embodiments, the distal end of the sheath 200 is further fixed with an end cap 201, the end cap 201 having a limiting recess 202, and the proximal end of the receiving tube 500 is received in the limiting recess 202 so that the sheath 200 and the receiving tube 500 are detachably connected.

[0177] In some embodiments, the near-end wall of the receiving tube 500 is provided with a locking groove 560, which constitutes a locking part 511; when the clip 400 is connected to the connecting piece 214, the first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 are held in a close-to-each-other state by the connecting piece 214, such as Figure 44 and Figure 46 As shown; when the clip 400 and the connecting piece 214 are released from each other, the first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 expand radially outward and engage in the locking groove 560, as shown. Figure 48 As shown, this locks the clip in place.

[0178] In some embodiments, the storage tube 500 is integrally formed, such as... Figure 46 As shown, the locking groove 560 is directly opened in the storage tube 500 by precision machining, which reduces the number of parts and ensures stable performance.

[0179] In some embodiments, the storage tube 500 includes a first storage tube 501 and a second storage tube 502, such as Figure 44As shown, the distal end of the second receiving tube 502 is fitted into the proximal channel of the first receiving tube 501. The openings in the wall of the second receiving tube 502 and the openings in the first receiving tube 501 are assembled together to form a locking groove 560. Because the buckle size of the locking groove 560 in the actual product is very small (generally less than 0.5mm), if multiple functional structures (such as springs and locking grooves) are set on the receiving tube 500 with an axial dimension of less than 10mm and a diameter of less than 1mm, the yield of a single receiving tube 500 will be low and the cost will be high. Therefore, the spring 510 is set on the wall of the first receiving tube 501, and the locking groove 560 is formed by opening the openings in the first receiving tube 501 and the second receiving tube 502 respectively. This reduces the processing difficulty of a single part and lowers the cost.

[0180] In some embodiments, the first protrusion 461 and the second protrusion 462 (locked portion) are subjected to radial inward pressing force, the locking groove 560 (locking portion) and the first protrusion 461 and the second protrusion 462 (locked portion) are released from their mutual cooperation, the storage tube releases the movement restriction on the clamp, the clamp 400 is in the unlocked state, so that the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 can move away from each other, that is, the clamp 400 changes from the closed state to the reopened state.

[0181] In some embodiments, the receiving tube 500 is further provided with an unlocking part 512 that is connected to the locked part 602. The locked part 602 is released from its engagement with the locking part 511 by the force exerted by the unlocking part 512. The unlocking part 512 may be a component capable of applying external force to the locking part 511 or the locked part 602 to release the engagement between the locked part 602 and the locking part 511.

[0182] In some embodiments, the unlocking part 512 includes a spring piece 510 disposed on the outer wall of the receiving tube 500; the spring piece 510 abuts against the first protrusion 461 and the second protrusion 462, and the spring piece 510, under force, causes the first protrusion 461 and the second protrusion 462 to deflect radially toward the inner side of the channel, thereby releasing the engagement between the locked part 602 and the locking part 511. In some embodiments, at least two slots 570 are formed on the outer wall of the receiving tube 500 along the axial extension direction of the channel of the receiving tube 500. The tube wall portion of the receiving tube 500 constitutes the spring piece 510, the spring piece portion fixedly connected or integrally connected to the receiving tube 500 is the spring piece fixed end 571, and the spring piece portion that can be radially deflected relative to the spring piece fixed end 571 along the channel of the receiving tube 500 is the spring piece free end 572. The spring piece area between the spring piece fixed end 571 and the spring piece free end 572 constitutes the unlocking part 512, that is, the unlocking part 512 is disposed on the tube wall of the receiving tube 500. In some embodiments, the free end 572 of the spring is provided with a mating portion 573 that bends and extends radially inward along the channel of the receiving tube 500. The mating portion 573 can be radially deflected within the locking groove 560 or deflected outside the locking groove 560, such as... Figure 48 As shown. The mating portion 573 can be an assembly for abutting against the protrusions (first protrusion 461 and second protrusion 462) of the clamping arm, which can transmit the radial force on the free end 572 of the spring sheet to the protrusions of the clamping arm. In some embodiments, the receiving tube 500 includes a first receiving tube 501 and a second receiving tube 502, the distal end of the second receiving tube 502 being sleeved in the channel of the proximal end of the first receiving tube 501; an unlocking portion 512 is provided in the first receiving tube 501, and a locking groove 560 is provided in the second receiving tube 502.

[0183] In some embodiments, the clip 400 is in the open state, such as... Figures 43-44 As shown; the distal ends of the first clamping arm 410 and the second clamping arm 420 are far apart from each other, the clamp 400 is connected to the connecting piece 214, the first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 are held together radially inward by the connecting piece 214; the spring piece 510 provided at the storage tube 500 is in a non-stressed state, the docking part 573 of the free end 572 of the spring piece is bent and extended radially inward along the channel of the storage tube 500 and partially or completely extends into the locking groove 560 (locking part 511) of the storage tube 500, and the docking part 573 is not docked with the first protrusion 461 and the second protrusion 462 (locked part 602).

[0184] In some embodiments, the clip is in a closed, unlocked state, such as... Figures 45-46As shown; the distal ends of the first clamping arm 410 and the second clamping arm 420 are close to each other, and the tissue 300 is stored between the distal ends of the first clamping arm 410 and the second clamping arm 420. The clamp 400 is still connected to the connecting piece 214. The first protrusion 461 and the second protrusion 462 of the first clamping arm 410 and the second clamping arm 420 are kept in a radially inwardly close state by the connecting piece 214. If it is necessary to adjust the clamping angle or position, the mandrel 210 can be pushed from the distal end to the proximal end to reopen the first clamping arm 410 and the second clamping arm 420. The spring piece 510 provided at the storage tube 500 is in a non-stressed state. The docking part 573 of the free end 572 of the spring piece is bent and extended radially inward along the channel of the storage tube 500 and partially or completely extends into the locking groove 560 (locking part 511) of the storage tube 500. The docking part 573 is not docked with the protrusion 602 (locked part 602).

[0185] In some embodiments, the clip 400 is in a locked state, such as... Figures 47-48 As shown, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 clamp the tissue 300 and close them together. The connecting piece 214 continues to be subjected to a tensile force from the distal end to the proximal end, causing the connecting piece 214 to deform or break. The connecting piece 214 separates from the clamp 400 (the conveying device 20 and the clamping device 10 are released). The first protrusion 461 and the second protrusion 462 (locked part 602) of the first clamping arm 410 and the second clamping arm 420 spring back radially outward and enter the receiving tube 500. Inside the locking groove 560 (locking part 511), the first protrusion 461 and the second protrusion 462 (locked part 602) cooperate with the locking groove 560 (locking part 511); the first protrusion 461 and the second protrusion 462 (locked part 602) are connected to the docking part 573, the docking part 573 is radially deflected outward, the unlocking part 512 is radially deflected outward relative to the axial direction of the receiving tube 500, and the unlocking part 512 is located outside the locking groove 560 (locking part 511).

[0186] In some embodiments, after the clamp 400 is in a closed and locked state, it is necessary to reopen the first clamping arm 410 and the second clamping arm 420, that is, to disengage (remove) the engagement relationship between the first protrusion 461 and the second protrusion 462 (locked part 602) and the locking groove 560 (locking part 511), such as... Figures 49-50As shown. The disassembly device 700 can apply disassembly force to the clamp device 10. The disassembly device 700 can be a biopsy forceps, a snare, an energy device, or a specialized disassembly tool, etc. The disassembly device 700 can approach the clamp device 10 through the endoscopic forceps channel and apply the disassembly force to the locked part 602. In some embodiments of this specification, the axial distance of the unlocking part 512 (spring piece 510) is 2mm-10mm. The disassembly force of the disassembly device 700 only needs to be applied to the unlocking part 512 (spring piece 510) located on the wall of the receiving tube 500, thereby increasing the area of ​​the disassembly force application of the disassembly device 700. At the same time, since the unlocking part 512 is radially deflected outward relative to the axial direction of the receiving tube 500 when the clamp 400 is in the locked state, that is, the unlocking part 512 partially protrudes from the surface of the receiving tube 500, it is more suitable for the disassembly device 700 (especially the snare) to take the unlocking part 512 (spring piece 510) and apply the disassembly force radially outward. Therefore, the present invention reduces the disassembly difficulty and improves the disassembly success rate.

[0187] In some embodiments, the clip 400 is in the unlocked state, and the engagement between the first protrusion 461 and the second protrusion 462 (locked portion 602) and the locking groove 560 (locking portion 511) is released. Figures 51-52 As shown. The disassembly device 700 (e.g., a snare) engages the unlocking part 512 (spring piece 510) on the wall of the receiving tube 500, applying a disassembly force radially inward. The unlocking part 512 (spring piece 510) deflects radially inward, and the mating part 573 of the unlocking part 512 (spring piece 510) enters the locking groove 560 (locking part 511). That is, the unlocking part 512 (spring piece 510) deflects radially inward into the locking groove 560 (locking part 511), and the first protrusion 461 and the second protrusion 462 (locked part 602) that are mated with the mating part 573 are subjected to... The radially inward force causes the first protrusion 461 and the second protrusion 462 (locked part 602) to deflect radially inward, and the first protrusion 461 and the second protrusion 462 (locked part 602) disengage from the locking groove 560 (locking part 511). The engagement relationship between the first protrusion 461 and the second protrusion 462 (locked part 602) and the locking groove 560 (locking part 511) is released. Due to the elasticity of the clamps, the distal ends of the first clamp arm 410 and the second clamp arm 420 reopen, and the clamp device 10 placed at the lesion site separates from the tissue 300.

[0188] In some embodiments, the locking part includes a pin disposed on the storage tube, the pin being fixed relative to the outer wall of the storage tube; the clamping arm includes a groove, the pin passing through the interior of the groove and being slidably connected to the groove; the locked part includes an elastic blocking member disposed on the path of the groove.

[0189] like Figures 53-57As shown, in some embodiments, the proximal end of the clamping arm is provided with a groove 440, and the receiving tube 500 includes a pin 550 and a connecting hole 504. The pin 550 passes through the connecting hole 504 and extends radially through the receiving tube 500. The proximal ends of the first clamping arm 410 and the second clamping arm 420 are subjected to an axial tension from the distal end to the proximal end. The groove 440 moves around the pin 550 from the distal end to the proximal end, and the position of the pin 550 within the groove 440 moves from the proximal end to the distal end of the groove 440. The distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 gradually approach each other. In some embodiments, the groove 440 is provided with an elastic stop 450, which can be a component that provides a blocking effect on the movement path of the pin 550.

[0190] In some embodiments, the pin 550 constitutes a locking part, and the elastic blocking member 450 constitutes a locked part. In some embodiments, the clamp 400 is in the open state, and the clamp arm, under the action of tension, drives the elastic blocking member 450 to move toward the pin 550. When the elastic blocking member 450 moves to the position of the pin 550, it passes over the pin 550 under the action of tension and is located at the proximal end of the pin 550. In some embodiments, after the elastic blocking member 450 passes over the pin 550, the pin 550 prevents the elastic blocking member 450 from moving from the proximal end of the pin 550 to the distal end of the pin 550, so that the pin 550 and the elastic blocking member 450 form a mating relationship, the clamp 400 is in the locked state, and the distal ends of the first clamp arm 410 and the second clamp arm 420 remain closed.

[0191] In some embodiments, the elastic blocking member 450 is deflected by force, thereby disengaging the locking part 602 from the locking part 511.

[0192] In some embodiments, see Figure 56 , Figure 57 When the clamp 400 is in the unlocked state, the disassembly device 700 engages with the elastic blocking member 450 (locked part) and pulls the blocking member 450 axially, causing the elastic blocking member 450 (locked part 602) to undergo axial displacement or deflection, thereby releasing the engagement between the pin 550 (locking part 511) and the elastic blocking member 450 (locked part 602), allowing the clamping arm to move toward the distal end relative to the pin 550. The distal ends of the first clamping arm 410 and the second clamping arm 420 move away from each other, that is, the clamp 400 changes from the locked state to the unlocked state.

[0193] In some embodiments, the pin 550 is compressed radially and disengaged from the receiving tube 500, thereby releasing the engagement between the locking part 511 and the locked part 602.

[0194] like Figures 56-57As shown, in some embodiments, when the clip 400 is in the unlocked state, a spring is provided inside the pin 550 of the storage tube 500. Under the action of radial inward compression, the spring contracts radially, and the pin 550 falls off from the connection hole 504. That is, the pin 550 disengages from the storage tube 500. The pin 550 no longer hinders the movement of the elastic blocking member 450. The connection between the pin 550 (locking part 511) and the storage tube 500 is released, and the clip 400 is in the unlocked state. This allows the distal ends of the first clamping arm 410 and the second clamping arm 420 to move away from each other, that is, the clip 400 can be reopened.

[0195] In some embodiments, the release of the connection between the locked part 602 and the clamp arm releases the movement restriction of the storage tube 500 on the clamp 400.

[0196] In some embodiments, such as Figures 58-61 As shown, the clip 400 transitions from a locked state (the clip 400 is locked and awaiting removal) to an unlocked state (the clip 400 is reopened). In some embodiments, the clip 400 includes a first clamping arm 410, a second clamping arm 420, and a connecting pin 601. In some embodiments, the first clamping arm 410 and the second clamping arm 420 are connected by the connecting pin 601, and one or both ends of the connecting pin 601 constitute a locked portion 602. In some embodiments, the proximal ends of the first clamping arm 410 and the second clamping arm 420 form a receiving space, the connecting pin 601 extends radially through the receiving space, and the connecting pin 601 is connected to the first clamping arm 410 and the second clamping arm 420 respectively by a pin fixing portion 603, and one or both ends of the connecting pin 601 constitute the locked portion 602. In some embodiments, the storage tube includes a spring, which includes a first end and a second end. The first end 510A of the spring is fixedly connected to the storage tube 500. The second end 510B of the spring extends into the channel of the storage tube 500 and forms a locking part 511.

[0197] like Figure 58 and Figure 59 As shown, in some embodiments, the clamp 400 is in a locked and awaiting-to-be-disassembled state. The clamp 400 is locked, with the locking part 511 and the locked part 602 engaging to lock each other, and the distal ends of the first clamp arm 410 and the second clamp arm 420 remaining closed. The disassembly device 700 enters through the endoscope channel. The first disassembly arm 701 and the first disassembly arm 702 of the disassembly device 700 open and approach the unlocking part 512 of the clamp 400, which is already in the locked state.

[0198] In some embodiments, the clamping arm deforms, breaks, or displaces under force, causing the connection between the locked part 602 and the clamping arm to be released.

[0199] In some embodiments, the first clamping arm 410 has a first bent portion 411 at one end near the connecting pin 601, which bends towards the second clamping arm 420. The first bent portion 411 and the end abutting against the connecting pin 601 constitute a first connecting portion 411A. The second clamping arm 420 has a second bent portion 421 at one end near the connecting pin 601, which bends towards the first clamping arm 410. The second bent portion 421 and the end abutting against the connecting pin 601 constitute a second connecting portion 421A. In some embodiments, the first connecting portion 411A and the second connecting portion 421A constitute a first connecting portion, and the clamp 400 and the locked portion 602 are connected through the first connecting portion. In some embodiments, the first connecting portion may be a structure on the clamping arm that forms a connecting hole 504. In some embodiments, the first connecting portion may also be a structure on the clamping arm that forms a pin fixing portion 603.

[0200] In some embodiments, when the first connecting portion is subjected to radial extrusion force toward the channel, the first connecting portion deforms, breaks, or displaces, and the connection between the clamp and the locked portion is released. The first disassembly arm 701 and the second disassembly arm 702 apply radial inward force to the first connecting portion (first joint 411A and / or second joint 421A) via the unlocking portion 512. When the first joint 411A and / or the second joint 421A are subjected to radial inward extrusion force, they deform, the connection between the proximal end of the clamp 400 and the locked portion 602 is released, and the proximal ends of the first clamping arm 410 and the second clamping arm 420 move from proximal to distal relative to the connecting pin 601. The clamp 400 is in an unlocked state, causing the distal ends of the first clamping arm 410 and the second clamping arm 420 to move away from each other, i.e., the clamp 400 changes from a locked state to an unlocked state, and the clamp 400 can be reopened. In some embodiments, the release of the connection also includes breakage or displacement. In some embodiments, the first connecting portion may be a structure on the clamping arm that forms a connecting hole 504. When the first connecting portion is subjected to force and breaks, the connecting hole 504 is destroyed, and the connection between the proximal end of the clamp 400 and the connecting pin 601 (i.e., the locked portion 602) is released. In some embodiments, the first connecting portion may be a structure on the clamping arm that forms a pin fixing portion 603. When the first connecting portion is subjected to force and shifts, breaks, or deforms, the pin fixing portion 603 can no longer fix the connecting pin, and the connection between the proximal end of the clamp 400 and the locked portion 602 is released.

[0201] In some embodiments, the release of the movement restriction of the locking part 511 relative to the outer wall releases the movement restriction of the storage tube 500 on the clip 400.

[0202] In some embodiments, see Figures 62-65The storage tube 500 includes a first storage tube 501 and a second storage tube 502. The second storage tube 502 is disposed inside the first storage tube 501, and its outer wall is disposed on the first storage tube 501. The locking part 511 is disposed on the second storage tube 502. When the clip 400 is in the locked state, the first storage tube 501 and the second storage tube 502 are relatively fixed. When the clip 400 switches from the locked state to the unlocked state, the first storage tube 501 and the second storage tube 502 can move relative to each other, thereby releasing the movement restriction of the locking part 511 relative to the outer wall.

[0203] In some embodiments, such as Figures 62-65 As shown, the first storage tube 501 is provided with a hooking groove 530, and the second storage tube 502 is provided with a hooking part 540. In some embodiments, the hooking groove 530 and the hooking part 540 constitute a second connecting part, and the storage tube 500 and the locking part 511 are connected through the second connecting part. In some embodiments, the hooking groove 530 and the hooking part 540 are hooked together to fix the first storage tube 501 and the second storage tube 502 relative to each other, and the hooking part 540 is disengaged from the hooking groove 530 to allow the first storage tube 501 and the second storage tube 502 to move relative to each other.

[0204] In some embodiments, the second storage tube 502 includes a spring piece 510, which includes a first end 510A disposed at the distal end and a second end 510B disposed at the proximal end. The first end 510A cooperates with the second hooking groove 532 to form a hooking part 540, and the second end 510B extends into the channel of the second storage tube 502 to form a locking part 511.

[0205] In some embodiments, the mounting slot 530 includes a first mounting slot 531 and a second mounting slot 532, and the mounting portion 540 includes a first mounting portion 541 and a second mounting portion 542. In some embodiments, the first mounting portion 541 and the second mounting portion 542 are respectively the first end 510A and the second end 510B of the spring sheet that are engaged with each other in the first mounting slot 531 and the second mounting slot 532.

[0206] In some embodiments, the first end 510A of the spring is deformed, broken, or displaced under force, causing the hook part 540 to disengage from the hook groove 530.

[0207] like Figures 66-67As shown, in some embodiments, the clamp 400 is in a locked state, the first hook portion 541 of the second storage tube 502 is hooked to the first hook groove 531 of the first storage tube 501, and the second hook portion 542 of the second storage tube 502 is hooked to the second hook groove 532 of the first storage tube 501, the first storage tube 501 and the second storage tube 502 are connected; and the locked portion 602 and the locking portion 511 cooperate with each other, keeping the distal ends of the first clamping arm 410 and the second clamping arm 420 closed. In some embodiments, the locked portion 602 may be a connecting pin (e.g., a connecting pin 601 connecting the first clamping arm 410 and the second clamping arm 420, or a connecting pin provided at the hinge point of the connecting rod structure 605). In some embodiments, the locked portion 602 may also be a protrusion provided at the proximal end of the clamping arm. The disassembly device 700 enters through the endoscope channel. The first disassembly arm 701 and the first disassembly arm 702 of the disassembly device 700 open close to the second connecting portion of the clamp 400, which is already in a locked state.

[0208] like Figures 68-69 As shown, in some embodiments, when the clip 400 is in the unlocked state, the spring clip constituting the hook portion deforms when the first hook portion 541 and the second hook portion 542 are subjected to radially inward pressing force. In some embodiments, when the first hook portion 541 is subjected to radially inward pressing force, the engagement relationship between the first hook portion 541 and the first hook groove 531 of the first storage tube 501 is released, thereby releasing the movement restriction of the locking portion 511 relative to the outer wall of the storage tube 500. In some embodiments, when the first hook portion 541 and the second hook portion 542 are respectively subjected to radially inward pressing force, the engagement relationship between the first hook portion 541 and the second hook portion 542 and the first hook groove 531 and the second hook groove 532 of the first storage tube 501 is released, thereby releasing the movement restriction of the locking portion 511 relative to the outer wall of the storage tube 500. In some embodiments, after the movement restriction of the locking part 511 relative to the outer wall of the receiving tube 500 is released, the proximal ends of the first clamping arm 410 and the second clamping arm 420 can move from the proximal end to the distal end relative to the receiving tube 500, and the clamp 400 is in an unlocked state, so that the distal ends of the first clamping arm 410 and the second clamping arm 420 can move away from each other, that is, the clamp 400 can be reopened. In some embodiments, the release of the connection relationship also includes breakage or displacement.

[0209] This specification also provides a clamp unlocking method, which can be applied to the clamp device 10 in any embodiment of this specification. In some embodiments, the clamp unlocking method includes: operating a disassembly device (such as disassembly device 700) to provide a disassembly force to the clamp in the locked state; applying the disassembly force to the locked part to disengage the engagement between the locking part and the locked part, thereby switching the clamp from the locked state to the unlocked state; or, applying the disassembly force to the locking part to disengage the engagement between the locking part and the locked part, thereby switching the clamp from the locked state to the unlocked state; or, applying the disassembly force to the clamp arm to disengage the connection between the clamp arm and the locked part, thereby switching the clamp from the locked state to the unlocked state; or, applying the disassembly force to the receiving tube to move the locking part relative to the outer wall of the receiving tube toward the distal end, thereby switching the clamp from the locked state to the unlocked state; wherein, when the clamp is in the unlocked state, the distal end of the clamp arm is open.

[0210] In some embodiments, after the clamp is in a closed and locked state (clamp in the first position), the clamp can be unlocked by the disassembly device to reopen the clamp arms (such as the first clamp arm 410 and the second clamp arm 420). In some embodiments, the disassembly device 700 can be moved through the endoscopic forceps channel to the clamp device to apply a disassembly force to the clamp device. In some embodiments, the disassembly device 700 may include, but is not limited to, biopsy forceps, snares, energy devices, or other specialized disassembly devices.

[0211] In some embodiments, the disassembly device 700 can apply a disassembly force to the locked part, causing the locked part to deform, break, or displace, thereby releasing the engagement between the locking part and the locked part, and switching the clamp from the locked state to the unlocked state.

[0212] In some embodiments, the locking part may be a connecting pin 601 disposed on the clip 400. See also: Figure 28The clip 400 includes a connecting pin 601, which can deform along its own axis to change its length along the axis. One or both ends of the connecting pin 601 constitute a locking portion 602. In some embodiments, the locking portion 511 may include a spring, a groove, or a locking slot 560 disposed on the receiving tube 500. The two ends of the connecting pin 601 cooperate with the locking portion 511 to lock the clip 400. In some embodiments, the connecting pin 601 includes a movable end disposed at both ends of the connecting pin 601 and a spring 604 connecting the movable end. The movable end can be compressed along the axis of the connecting pin 601 (or the radial direction of the receiving tube 500) to compress the spring 604, so that the radial dimension of the connecting pin 601 along the receiving tube 500 is smaller than the spacing of the locking portions 511 (e.g., the spacing between the second ends 510B of the two springs, or the spacing between the two grooves). More structural details about the connecting pin 601 can be found in other parts of this specification.

[0213] In some embodiments, the locking portion may be a protrusion provided on the clip 400. In some embodiments, such as Figures 35-36 As shown, the storage tube 500 is provided with a locking groove 560, which constitutes a locking portion 511. In some embodiments, the first clamping arm 410 and the second clamping arm 420 are provided with a first protrusion 461 and a second protrusion 462, which constitute a locked portion 602. Figure 42 As shown, the locking groove 560 (locking part 511) cooperates with the first protrusion 461 and the second protrusion 462 (locked part 602) to restrict the clip 400 from moving toward the distal end relative to the outer wall of the storage tube 500, and the clip 400 is in a locked state. More structural details about the protrusions can be found in other parts of this specification.

[0214] In some embodiments, the locked portion 602 may include a resilient stop 450, and the locking portion 511 may include a pin 550 disposed on the receiving tube 500. The resilient stop 450 cooperates with the pin 550 to lock the clip 400.

[0215] In some embodiments, the disassembly device can directly apply a disassembly force to the locked portion, causing deformation, breakage, or displacement of the locked portion, thereby releasing the engagement between the locked portion and the locking part, and switching the clamp from the locked state to the unlocked state. The disassembly device can apply a disassembly force to the locked portion 602 by approaching the clamp device through the endoscopic forceps channel.

[0216] In some embodiments, such as Figures 31-32As shown, the first disassembly arm 701 and the second disassembly arm 702 of the disassembly device 700 apply radial inward force to the locked part 602 (such as the movable end of the connecting pin 601). When the spring 604, which is in contact with the locked part 602, is subjected to radial inward compressive force, it contracts radially inward, that is, the radial distance of the locked part 602 becomes smaller. The radial distance D2 of the locked part 602 is less than the distance H of the locking part 511, the locked part 602 disengages from the locking part 511, and the clamp 400 changes from the locked state to the unlocked state.

[0217] In some embodiments, the first disassembly arm 701 and the second disassembly arm 702 of the disassembly device 700 apply a radially inward disassembly force along the receiving tube 500 to the first protrusion 461 and the second protrusion 462, respectively. The first protrusion 461 and the second protrusion 462 (locked portion 602) are deflected by the radially inward disassembly force and disengage from the locking groove 560, thereby releasing the mutual cooperation between the locking groove 560 (locking portion 511) and the first protrusion 461 and the second protrusion 462 (locked portion). The movement restriction of the clip by the receiving tube 500 is released, and the clip 400 is in an unlocked state.

[0218] In some embodiments, the disassembly device 700 may be combined with the elastic blocking member 450 and apply a disassembly force to the elastic blocking member 450 to move the elastic blocking member 450 along the axial direction of the receiving tube 500, thereby releasing the engagement relationship between the elastic blocking member 450 and the pin 550, releasing the movement restriction of the receiving tube 500 on the clamp, and placing the clamp 400 in an unlocked state.

[0219] In some embodiments, the clamp device further includes an unlocking part 512, through which the disassembly device can apply a disassembly force to the locked part. In some embodiments, the unlocking part 512 may be disposed on the storage tube 500. In some embodiments, the storage tube 500 may include a first storage tube 501 and a second storage tube 502, and the unlocking part 512 may be disposed on the first storage tube 501.

[0220] In some embodiments, see Figure 49 and Figure 50The disassembly device 700 (e.g., a snare) can engage the unlocking part 512 (e.g., a spring 510) on the wall of the receiving tube 500, applying a disassembly force radially inward. The unlocking part 512 (spring 510) deflects radially inward, and the mating part 573 of the unlocking part 512 (spring 510) enters the locking groove 560 (locking part 511). That is, the unlocking part 512 (spring 510) deflects radially inward into the locking groove 560 (locking part 511), and engages with the mating part. When the locked portions 602 of the interlocking parts 573 are subjected to a radially inward force, the locked portions 602 are radially deflected or compressed inward, causing the locked portions 602 to disengage from the locking groove 560 (locking portion 511). The engagement between the locked portions 602 and the locking groove 560 (locking portion 511) is released. Due to their own elasticity, the distal ends of the first clamping arm 410 and the distal ends of the second clamping arm 420 reopen, thus separating the clamp device placed at the lesion from the tissue 300. In some embodiments, if the receiving tube 500 is not provided with an unlocking portion 512, the axial distance of the locking groove 560 is generally 0.5 mm, requiring the disassembly device 700 to be inserted into the locking groove 560 to act on the locked portion 602 for unlocking, which is more difficult to operate. In some embodiments, when the storage tube 500 includes an unlocking part 512, the axial distance of the unlocking part 512 (spring piece 510) is 2mm-10mm. The disassembly force of the disassembly device 700 only needs to be applied to the unlocking part 512 (spring piece 510) located on the tube wall of the storage tube 500, thereby increasing the area of ​​the disassembly force application of the disassembly device 700. At the same time, since the unlocking part 512 is radially deflected outward relative to the axial direction of the storage tube 500 when the clamp is in the first position, that is, the unlocking part 512 partially protrudes from the surface of the storage tube 500, it is more suitable for the disassembly device 700 (especially the snare) to take the unlocking part 512 (spring piece 510) and apply the disassembly force radially outward, thereby reducing the disassembly difficulty and increasing the disassembly success rate.

[0221] In some embodiments, the disassembly device 700 may apply a disassembly force to the locking part, causing the locking part to deform, break, or displace, thereby releasing the engagement between the locking part and the locked part, and switching the clamp from the locked state to the unlocked state.

[0222] In some embodiments, see Figures 22-23 The locking part may include a spring piece 510 disposed in the storage tube 500. The spring piece 510 may include a first end 510A, a second end 510B, and a third end 510C, wherein the second end 510B located near the end of the spring piece 510 constitutes the locking part 511.

[0223] In some embodiments, the first disassembly arm 701 and the first disassembly arm 702 of the disassembly device 700 open and approach the clamp 400, which is already in a locked state, and apply a disassembly force to the unlocking part 512 (i.e., the third end 510C of the spring piece located at the distal end of the spring piece 510). Under the action of the disassembly force, the first disassembly arm 701 and the second disassembly arm 702 apply radially inward force to the third end 510C of the spring piece (unlocking part 512), and the third end 510C of the spring piece changes from a state extending out of the channel of the receiving tube 500 to a state extending into the channel of the receiving tube 500, thereby driving the second end 510B of the spring piece to move radially outward, that is, the second end 510B of the spring piece changes from a state extending into the channel of the receiving tube 500 to a state extending out of the channel of the receiving tube 500, thereby releasing the engagement relationship between the locking part 511 and the locked part 602, and the clamp 400 is in an unlocked state.

[0224] In some embodiments, the locked portion 602 may include a resilient stop 450, and the locking portion 511 may include a pin 550 disposed in the receiving tube 500. The resilient stop 450 cooperates with the pin 550 to lock the clip 400. In some embodiments, the pin 550 is connected to the receiving tube 500 through a connecting hole 504. In some embodiments, the pin 550 can be compressed radially along the receiving tube 500.

[0225] In some embodiments, such as Figures 56 to 57 As shown, a spring is installed inside the pin 550 in the storage tube. The disassembly device can apply disassembly force to both ends of the pin 550. The pin 550 is subjected to radial inward compressive force and undergoes radial contraction. The pin 550 falls off from the connection hole 504, that is, the pin 550 is separated from the storage tube 500. The connection between the pin 550 (locking part) and the storage tube 500 is released. Then the pin 550 no longer hinders the movement of the elastic blocking member 450, and the clip 400 is in the unlocked state.

[0226] In some embodiments, the disassembly device 700 can apply a disassembly force to the clamping arm, causing the clamping arm to deform, break, or displace, thereby releasing the connection between the clamping arm and the locked part, and switching the clamp from the locked state to the unlocked state.

[0227] In some embodiments, the clip 400 and the locked portion 602 are connected by a first connecting portion (such as a first connecting portion 411A and / or a second connecting portion 421A). In some embodiments, the first connecting portion may be a structure on the clip arm that forms a connecting hole 504. In some embodiments, the first connecting portion may also be a structure on the clip arm that forms a pin fixing portion 603. Further details regarding the first connecting portion can be found in other parts of this specification.

[0228] In some embodiments, when the first connecting portion is subjected to radial extrusion force toward the channel, the first connecting portion deforms, breaks, or displaces, and the connection between the clamp and the locked portion is released. The first disassembly arm 701 and the second disassembly arm 702 of the disassembly device 700 apply radial inward force to the first connecting portion (first joint 411A and / or second joint 421A) through the unlocking portion 512. When the first joint 411A and / or the second joint 421A are subjected to radial inward extrusion force, the connection between the proximal end of the clamp 400 and the locked portion 602 is released, and the proximal ends of the first clamping arm 410 and the second clamping arm 420 move from proximal to distal end relative to the connecting pin 601, and the clamp 400 is in the unlocked state.

[0229] In some embodiments, the disassembly device 700 can apply a disassembly force to the storage tube, causing the locking part to move toward the distal end relative to the outer wall of the storage tube, and the clamp to switch from the locked state to the unlocked state.

[0230] In some embodiments, the storage tube 500 includes a first storage tube 501 and a second storage tube 502 disposed inside the first storage tube 501, and the locking part 511 is disposed on the second storage tube 502. In some embodiments, such as Figures 66-67 As shown, in some embodiments, the clip 400 is in a locked state, the first hooking part 541 of the second storage tube 502 is hooked to the first hooking groove 531 of the first storage tube 501, the second hooking part 542 of the second storage tube 502 is hooked to the second hooking groove 532 of the first storage tube 501, the first storage tube 501 and the second storage tube 502 are connected; and the locked part 602 and the locking part 511 cooperate with each other, and the distal ends of the first clamping arm 410 and the second clamping arm 420 remain closed.

[0231] In some embodiments, such as Figures 68-69As shown, the first disassembly arm 701 and the first disassembly arm 702 of the disassembly device 700 can apply a disassembly force to the first hook-up portion 541 and the second hook-up portion 542. When the first hook-up portion 541 and the second hook-up portion 542 are subjected to radially inward pressing force (i.e., disassembly force), the spring sheet constituting the hook-up portion deforms. In some embodiments, when the first hook-up portion 541 is subjected to radially inward pressing force, the engagement relationship between the first hook-up portion 541 and the first hook-up groove 531 of the first receiving tube 501 is released, thereby releasing the movement restriction of the locking portion 511 relative to the outer wall of the receiving tube 500. In some embodiments, when the first hook-up portion 541 and the second hook-up portion 542 are respectively subjected to radially inward pressing force, the engagement relationship between the first hook-up portion 541 and the second hook-up groove 531 and the second hook-up groove 532 of the first receiving tube 501 is released, thereby releasing the movement restriction of the locking portion 511 relative to the outer wall of the receiving tube 500. In some embodiments, after the movement restriction of the locking part 511 relative to the outer wall of the storage tube 500 is released, the proximal end of the first clamping arm 410 and the proximal end of the second clamping arm 420 can move from the proximal end to the distal end relative to the storage tube 500, and the clamp 400 is in an unlocked state.

[0232] In some embodiments, the distal end of the clamp arm can be opened after the clamp switches from the locked state to the unlocked state.

[0233] The clamp device, conveying device, and clamp unlocking method described in some embodiments of this application enable the clamp to be unlocked and removed after it is closed and locked, thus avoiding damage to the tissue held by the clamp. Applying disassembly force to the locked parts of different structures through the disassembly device can reduce the difficulty of disassembly and increase the success rate of disassembly. In addition, the spring and the storage tube can be fixedly connected, simplifying the clamp structure and making it easier to manufacture.

[0234] 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 application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0235] Furthermore, this application uses specific terms to describe embodiments of the application. 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 the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0236] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although the foregoing disclosure has discussed some currently considered useful embodiments of the invention through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented using hardware devices, they can also be implemented solely through software solutions, such as installing the described system on existing servers or mobile devices.

[0237] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application 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.

[0238] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0239] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that material are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there is any inconsistency or conflict between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0240] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A clamp device, comprising a clamp and a receiving tube, the clamp comprising clamp arms, the clamp arms comprising a first clamp arm and a second clamp arm, the distal ends of the first clamp arm and the distal ends of the second clamp arm being used for ligation; The receiving tube includes an outer wall and a channel surrounded by the outer wall, and the proximal ends of the first clamping arm and the second clamping arm can be received in the channel; The clamp also includes a locking part, which is connected to the clamp arm. The clamp includes a connecting pin, one or both ends of which constitute the locking part. The storage tube also includes a locking part, which restricts the movement of the locking part relative to the outer wall toward the distal end. in, When the clamp is in the locked state, the distal ends of the first clamp arm and the distal ends of the second clamp arm remain closed. The locking part and the locked part cooperate to restrict the clamp from moving toward the distal end relative to the storage tube. When the disassembly force is applied to the clamp device in a preset manner, the movement restriction of the clamp by the storage tube is released, the clamp switches from the locked state to the unlocked state, and the distal ends of the first clamp arm and the distal ends of the second clamp arm can be reopened. The preset methods include: The disassembly force acts on the locked part, causing the locking part to disengage from the locking part; or The disassembly force acts on the locking part to release the engagement between the locking part and the locked part; or The disassembly force acts on the clamping arm, causing the connection between the clamping arm and the locked part to be released.

2. The clamping device according to claim 1, wherein, The locked part deforms, breaks, or displaces under the action of the disassembly force, thereby releasing the cooperation between the locking part and the locked part.

3. The clamping device according to claim 1, wherein, The connecting pin is connected to the clamping arm. The connecting pin is compressed radially under force, thereby releasing the engagement between the locking part and the locked part.

4. The clamping device according to claim 3, wherein, The connecting pin includes a movable end and a spring connecting the movable end. The movable end is subjected to force to compress the spring radially, so that the radial dimension of the connecting pin is smaller than the spacing of the locking part.

5. The clamping device according to claim 1, wherein, The locking part deforms, breaks, or displaces under the action of the disassembly force, thereby releasing the engagement between the locking part and the locked part.

6. The clamping device according to claim 5, wherein, The locking part includes a spring piece, which includes a first end, a second end, and a third end. The first end is connected to the outer wall of the receiving tube. The second end is located near the first end, and the third end is located far from the first end. The second end constitutes the locking part.

7. The clamping device according to claim 6, wherein, When the clip is in the locked state, the second end of the spring plate extends into the channel and the third end of the spring plate extends out of the outer wall; when the clip switches from the locked state to the unlocked state, the second end of the spring plate extends out of the outer wall and the third end of the spring plate extends into the channel.

8. The clamping device according to claim 1, wherein, The clamping arm deforms, breaks, or displaces under force, causing the connection between the clamping arm and the locked part to be released.

9. The clamping device according to claim 8, wherein, The portion of the clamping arm located near the connecting pin constitutes a first connecting part, and the clamping arm and the locked part are connected through the first connecting part; when the first connecting part is subjected to radial extrusion force toward the channel, the first connecting part deforms, breaks, or displaces, and the connection between the clamping arm and the locked part is released.

10. The clamping device according to claim 9, wherein, The first clamping arm has a first bent portion that bends toward the second clamping arm at one end near the connecting pin, and the end of the first bent portion that abuts against the connecting pin is a first connecting portion; the second clamping arm has a second bent portion that bends toward the first clamping arm at one end near the connecting pin, and the end of the second bent portion that abuts against the connecting pin is a second connecting portion; the first connecting portion and the second connecting portion constitute the first connecting portion.

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