Anchor and anchoring device

Abstract

The embodiment of the utility model provides an anchor and an anchoring device, and the anchor comprises a traction line which is a flexible part; the anchor is connected to the far end of the traction line; at least part of the driving pipe is arranged on at least part of the section of the traction line in a sleeving manner; the anchor is configured to move along the puncture needle under the driving of the driving tube, and can turn over when extending out of the far end of the puncture needle, so that an included angle is formed between the anchor and the traction line, and the anchor is stopped on the inner wall of the target tissue. According to the anchor and the anchoring device provided by the embodiment of the invention, the anchor of the anchor can be smoothly implanted into the target tissue.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and in particular, relates to an anchor and an anchoring device. Background Art

[0002] Endoscopic Ultrsonography (EUS) is a minimally invasive procedure for evaluating digestive tract and lung diseases. It involves medical surgery on the patient's gastrointestinal tract. For example, in gallbladder drainage surgery guided by endoscopic ultrasound, a fixation frame needs to be implanted between the gallbladder and the intestine. The fixation frame serves as a fistula to achieve connectivity between the gallbladder and the intestine.

[0003] In order to quickly install the fixation frame, an anchor is usually implanted into the gallbladder through the intestine under the guidance of an endoscope, and the anchor of the anchor drives the gallbladder to cling to the intestinal wall by pulling the traction line of the anchor outward. How to more smoothly implant the anchor into the target tissue, such as the gallbladder, is a problem that needs to be solved urgently. Utility Model Content

[0004] The embodiments of the present application provide an anchor and an anchoring device, which can enable the anchor of the anchor to be smoothly implanted into the target tissue.

[0005] On the one hand, an embodiment of the present application provides an anchor, comprising:

[0006] A pulling wire, which is a flexible part;

[0007] an anchor connected to the distal end of the pull wire and capable of being pulled by the pull wire;

[0008] A drive tube, at least partially sleeved on at least a portion of the pull wire;

[0009] The anchor is configured to move along the puncture needle under the drive of the driving tube, and can be turned over when extending out of the distal end of the puncture needle to form an angle with the pulling wire so that the anchor stops at the inner wall of the target tissue.

[0010] In one embodiment, the driving tube is sleeved on the puller wire, and the anchor is located at the distal end side of the driving tube;

[0011] When the anchor is located in the puncture needle, the proximal end of the anchor abuts against the distal end of the driving tube, so that when the anchor extends out of the puncture needle, the anchor can be turned over under the abutment of the driving tube and the pulling of the pulling wire.

[0012] In one embodiment, the anchor also includes a distal locking structure, which is configured to be fixed to the proximal end of the puncture needle, and a first receiving channel is formed in the distal locking structure, and the first receiving channel is connected to the needle track of the puncture needle. Part of the drive tube and the anchor are located in the first receiving channel, and the anchor is configured to enter the needle track of the puncture needle through the first receiving channel under the drive of the drive tube.

[0013] In one embodiment, the distal locking structure is configured to selectively engage the drive tube to lock the drive tube and the anchor in the first receiving channel.

[0014] In one embodiment, the distal locking structure comprises:

[0015] A distal connector configured to be fixed to the proximal end of the puncture needle and formed with at least a portion of a first receiving channel for the driving tube and the anchor to pass through;

[0016] The distal locking member is disposed on the distal connecting member and is configured to selectively cooperate with the driving tube to lock or release the driving tube and the anchor on the distal connecting member.

[0017] In one embodiment, the distal locking member comprises:

[0018] The distal fixing portion is formed with a first receiving channel and can be selectively fixed or released from the distal connecting piece;

[0019] A distal locking portion, located inside the distal fixing portion;

[0020] When the distal fixing portion is fixed to the distal connecting member, the distal locking portion is configured to cooperate with the distal connecting member and act on the driving tube to lock the driving tube and the anchor;

[0021] When the distal fixing portion is released from the distal connecting piece, the distal locking portion is configured to be disengaged from the distal connecting piece to release the driving tube and the anchor.

[0022] In one embodiment, the distal locking portion is a distal elastic member embedded in the distal fixing portion, and the distal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the driving tube;

[0023] When the distal fixing portion is fixed to the distal connecting member, the distal elastic member is squeezed by the distal connecting member and abuts against the driving tube along a first direction to lock the driving tube and the anchor;

[0024] When the distal fixing portion is released from the distal connecting piece, the distal elastic piece is separated from the distal connecting piece to release the driving tube and the anchor during the rebound process.

[0025] In one embodiment, the distal elastic member is a distal elastic sleeve;

[0026] The distal elastic sleeve is formed with a first through hole for the driving tube to pass through;

[0027] When the distal elastic sleeve is squeezed by the distal connector, the hole wall of the first through hole contacts the driving tube to lock the driving tube and the anchor, and after being separated from the distal connector, the hole wall of the first through hole rebounds to release the driving tube and the anchor.

[0028] In one embodiment, the distal fixing portion is a distal locking nut, and the distal locking nut is threadedly connected to the distal connecting piece.

[0029] In one embodiment, the anchor further comprises:

[0030] A proximal locking structure is disposed at the proximal end of the driving tube and is fixedly connected to the driving tube;

[0031] A second receiving channel is formed in the proximal locking structure, and the pulling wire is passed through the second receiving channel;

[0032] The proximal locking structure is configured to selectively cooperate with the puller wire to lock the puller wire to the drive tube.

[0033] In one embodiment, the proximal locking structure comprises:

[0034] A proximal connecting piece is fixed to the proximal end of the driving tube and is formed with at least a portion of the second receiving channel for the pulling wire to pass through;

[0035] The proximal locking member is disposed on the proximal connecting member and is configured to selectively cooperate with the pull wire to lock or release the pull wire on the proximal connecting member.

[0036] In one embodiment, the proximal locking member comprises:

[0037] The proximal fixing portion is formed with a second receiving channel and can be selectively fixed or released from the proximal connecting piece;

[0038] A proximal locking portion, located inside the proximal fixing portion;

[0039] When the proximal fixing portion is fixed to the proximal connecting member, the proximal locking portion is configured to cooperate with the proximal connecting member and act on the pull wire to lock the pull wire;

[0040] When the proximal fixing portion is released from the proximal connecting piece, the proximal locking portion is configured to be disengaged from the proximal connecting piece to release the pulling wire.

[0041] In one embodiment, the proximal locking portion is a proximal elastic member embedded in the proximal fixing portion, and the proximal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the pulling wire;

[0042] When the proximal fixing portion is fixed to the proximal connecting member, the proximal elastic member is squeezed by the proximal connecting member and contacts the pulling wire along a first direction to lock the pulling wire;

[0043] When the proximal fixing portion is released from the proximal connecting piece, the proximal elastic piece is separated from the proximal connecting piece to release the pulling wire during the rebound process.

[0044] In one embodiment, the proximal elastic member is a proximal elastic sleeve;

[0045] The proximal elastic sleeve is formed with a second through hole for the pull wire to pass through;

[0046] When the proximal elastic sleeve is squeezed by the proximal connector, the hole wall of the second through hole contacts the pulling wire to lock the driving tube, and after being separated from the proximal connector, the hole wall of the through hole rebounds to release the pulling wire.

[0047] In one embodiment, the proximal fixing portion is a proximal locking nut, and the proximal locking nut is threadedly connected to the proximal connecting piece.

[0048] In one embodiment, the anchor further comprises:

[0049] A limiter, selectively disposed between the drive tube and the puncture needle;

[0050] When the anchor is located in the puncture needle and has a preset distance from the distal end of the puncture needle, the limiting member is respectively matched with the driving tube and the puncture needle to limit the movement of the driving tube in the puncture needle;

[0051] When the anchor moves from the first position to the distal end of the puncture needle, the stopper is separated from between the drive tube and the puncture needle; wherein the first position is the position when the anchor has a preset distance from the distal end of the puncture needle.

[0052] In one embodiment, the stopper is disposed between the proximal locking structure and the distal locking structure of the anchor, and selectively protrudes from the side wall of the driving tube;

[0053] At least when the anchor is located in the puncture needle and has a preset distance from the distal end of the puncture needle, the stopper protrudes from the side wall of the driving tube so that the proximal end of the driving tube is blocked by the stopper on the proximal side of the puncture needle;

[0054] During the movement of the anchor from the first position toward the distal end of the puncture needle, the stopper is separated from the side wall of the driving tube.

[0055] In one embodiment, the stopper is detachably disposed on the driving tube;

[0056] The stopper is configured to be detached from the drive tube when the anchor moves from the first position toward the distal end of the puncture needle.

[0057] In one embodiment, the stopper is disposed at one end of the proximal locking structure of the anchor toward the distal locking structure;

[0058] The preset distance is 0, and the length of the stopper is equal to the maximum length of the anchor extending out of the distal end of the puncture needle.

[0059] In one embodiment, a limiting groove and a side notch connected to the limiting groove are formed on the anchor, the limiting groove and the side notch both extend along the length direction of the anchor, and one end of the limiting groove and the side notch both pass through the proximal end of the anchor;

[0060] When the proximal end of the anchor is located at the puncture needle, at least a portion of the puller wire is located in the limiting groove, and when the puller wire pulls the anchor to flip, a portion of the puller wire is separated from the anchor from the side notch.

[0061] In one embodiment, a clearance opening is formed at one end of the limiting groove located at the proximal end of the anchor, one end of the clearance opening extends to the side groove opening, and the other end of the clearance opening extends to a side of the axis of the limiting groove facing away from the side groove opening.

[0062] In one embodiment, there is a distance between the other end of the avoidance opening and the bottom of the limiting groove;

[0063] Wherein, the groove bottom of the limiting groove is arranged opposite to the side groove opening.

[0064] In one embodiment, when the proximal end of the anchor is located at the puncture needle, the pull wire extends along the axis of the limiting groove; or,

[0065] When the proximal end of the anchor is located at the puncture needle, the pull wire is located between the axis of the limiting groove and the side notch.

[0066] In one embodiment, a release cavity is formed on the anchor;

[0067] The wire-releasing cavity is communicated with the groove cavity of the limiting groove through the through hole, the distal end of the pulling wire is restricted in the wire-releasing cavity, and the pulling wire extends from the through hole into the limiting groove.

[0068] In one embodiment, a first limiting portion is formed at the distal end of the pull wire, and the first limiting portion is embedded in the wire-releasing cavity so that the distal end of the pull wire is restricted in the wire-releasing cavity.

[0069] In one embodiment, a wire-releasing groove is recessed inwardly on the side wall of the anchor, and the groove cavity of the wire-releasing groove is configured as a wire-releasing cavity.

[0070] In one embodiment, a mounting channel is formed in the anchor, one end of the mounting channel is connected to the through hole, and the other end of the mounting channel penetrates to the distal end of the anchor;

[0071] The distal end of the anchor is provided with an end cap, which is embedded in the installation channel from the distal end of the anchor, and one end of the end cap is spaced apart from the through hole;

[0072] A wire release cavity is formed between one end of the end cap and the through hole.

[0073] On the other hand, an embodiment of the present application further provides an anchoring device, comprising:

[0074] a puncture needle, the distal end of which is configured to extend into the interior of the target tissue;

[0075] Anchor as above;

[0076] The anchor of the anchor moves along the puncture needle under the drive of the driving tube to enter the target tissue.

[0077] The embodiment of the present application provides an anchor and an anchoring device, by setting the pull wire as a flexible member, and setting the pull wire in a driving tube, so that when the anchor at one end of the pull wire needs to be implanted, the puncture needle can be implanted into the target tissue first, and then the pull wire and the anchor can be driven by the driving tube to move along the puncture needle toward the target tissue until the anchor extends out of the distal end of the puncture needle. The anchor can be flipped to have an angle with the pull wire, so that the anchor can stop at the inner wall of the target tissue, so that the pull wire can be pulled so that the target tissue is closely attached to other tissues under the drive of the anchor. The setting of the driving tube can make the flexible pull wire and the anchor be smoothly implanted into the target tissue through the puncture needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 is a structural schematic diagram of one of the anchoring devices provided in one embodiment of the present application;

[0079] Figure 2a is a schematic structural diagram of another anchoring device provided in one embodiment of the present application;

[0080] Figure 2b yes Figure 2a A partial enlarged view of the middle A;

[0081] Figure 3 is a schematic diagram of the overall structure of an anchor provided by an embodiment of the present application;

[0082] Figure 4 yes Figure 3 A cross-sectional view of the mid-distal locking structure;

[0083] Figure 5 yes Figure 4 The local schematic diagram of point B in the middle;

[0084] Figure 6 is a structural schematic diagram of an anchor provided by an embodiment of the present application in a first state;

[0085] Figure 7 is a structural schematic diagram of an anchor provided by an embodiment of the present application in a second state;

[0086] Figure 8 yes Figure 3 A cross-sectional view of the mid-proximal locking structure;

[0087] Fig. 9 yes Figure 3 Schematic diagram of the cooperation between the mid-proximal locking structure and the limiting member;

[0088] Fig.10 is a schematic diagram of the structure of one of the anchors provided in one embodiment of the present application;

[0089] Fig.11 yes Fig.10 An assembly cross-sectional view of the anchor and the pull line;

[0090] Fig.12 yes Fig.11 Cross-sectional view of the middle anchor;

[0091] Fig.13 yes Figure 6 A partial enlarged view of point C in the middle;

[0092] Fig.14 It is a schematic diagram of the structure of another anchor provided in one embodiment of the present application.

[0093] Description of reference numerals:

[0094] 10-anchor; 20-puncture needle;

[0095] 100-pull wire; 200-anchor; 300-driving tube; 400-distal locking structure; 500-proximal locking structure; 600-limiting member; 21-fixing part;

[0096] 410- distal connection piece; 420- distal locking piece; 430- first receiving channel; 510- proximal connection piece; 520- proximal locking piece; 530- second receiving channel;

[0097] 411-guide portion; 421-distal fixing portion; 422-distal locking portion; 423-first through hole; 521-proximal fixing portion; 522-proximal locking portion; 523-second through hole;

[0098] 110-first limiting part; 210-limiting groove; 220-wire release cavity; 220a-wire release groove; 240-avoidance; 250-end cap; 260-installation channel; 410-second limiting part;

[0099] 210a-bottom of the groove; 210b-side notch; P-turning fulcrum; 210c-through hole;

[0100] 300a - proximal side of the driving tube; 300b - distal side of the driving tube;

[0101] 240a-one end of the avoidance opening; 240b-the other end of the avoidance opening. DETAILED DESCRIPTION

[0102] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0103] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific implementation methods disclosed below.

[0104] In the description of the present application, it should be understood that the terms "upper", "lower", "horizontal", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the present application, unless otherwise clearly specified and limited, a first feature being "upper" or "lower" than a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0105] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected entities are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0106] In this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0107] Endoscopic Ultrsonography (EUS) is a minimally invasive procedure for evaluating digestive tract and lung diseases. During medical procedures involving the patient's gastrointestinal tract, a fixation frame needs to be implanted between the two tissues being drained, and the fixation frame is used as a fistula to connect the two tissues. For example, in gallbladder drainage surgery guided by endoscopic ultrasound, a fixation frame needs to be implanted between the gallbladder and the intestine, and the fixation frame is used as a fistula to connect the gallbladder and the intestine.

[0108] It is understandable that the gallbladder is in a free state, which makes it inconvenient to quickly install the fixing frame between the gallbladder and the intestine.

[0109] In order to ensure the rapid installation of the fixing frame, an embodiment of the present application provides an endoscopic ultrasonic anchoring system, including an endoscope and an anchoring device. Figure 1 Schematic diagram of the structure of one of the anchoring devices provided in one embodiment of the present application. Figure 1 As shown, the anchoring device includes an anchor 10, and the anchor 10 has a pull line 100 and an anchor 200. The anchor 200 is connected to the distal end of the pull line 100 (refer to Figure 1 100b).

[0110] When surgery is required, the anchor 200 can be implanted into the target tissue such as the gallbladder through the first tissue such as the intestine under the guidance of the endoscope. For example, the sheath of the endoscope can be first introduced into the intestine, and then the anchor 10 can be clamped along the sheath channel. When the anchor 200 of the anchor 10 reaches the gallbladder through the intestine, the pull line 100 is pulled outward so that the anchor 200 stops on the inner wall of the target tissue, and the pull line 100 is continued to be pulled so that the anchor 200 drives the gallbladder to be close to the side wall of the intestine, that is, the gallbladder is anchored, so that the gallbladder is stabilized on the outside of the intestine. On the one hand, it is convenient to quickly install the fixing frame between the intestine and the gallbladder, and on the other hand, it also makes the fixing frame more stable between the intestine and the gallbladder.

[0111] In some examples, to achieve the implantation of the anchor 10, the anchor 10 may include an outer tube and an inner tube, wherein the inner tube is built into the outer tube, the pull wire 100 of the anchor 10 is located in the inner tube, the anchor 200 of the anchor 10 is located in the outer tube, and the proximal end of the anchor 200 abuts against the distal end of the inner tube. When the anchor 200 needs to be implanted, the inner tube, the anchor 200 and the pull wire 100 inside can be implanted into the intestine along the endoscope sleeve through the outer tube, and then the outer tube is kept stationary, and the inner tube is pushed so that the anchor 200 on the distal side of the inner tube gradually extends out of the outer tube, passes through the intestine and the side wall of the gallbladder, until it reaches the gallbladder, and then the pull wire 100 is pulled so that the anchor 200 stops at the side wall of the gallbladder, and the pull wire 100 is continued to be pulled so that the gallbladder is close to the intestine.

[0112] It can be understood that in the above example, the anchor 200 not only plays the role of pulling the gallbladder, but also plays the role of puncturing the tissue. In the process of the anchor 200 puncturing the tissue, it is difficult for the endoscope to develop the anchor 200, so that the position of the anchor 200 cannot be determined, which in turn affects the implantation efficiency of the anchor 200. In addition, the implantation distance of the anchor 200 may be insufficient. For example, when the anchor 200 is implanted on the side wall of the gallbladder but not fully extended into the gallbladder, at this time, the pull line 100 is pulled, and the anchor 200 will flip, but the gallbladder will be damaged during the flipping process. In addition, the implantation distance of the anchor 200 may be too large, thereby causing damage to the inner wall of the gallbladder and other tissues.

[0113] In addition, in the above example, the distal end of the pull wire 100 is fixed to the middle position of the anchor 200 to ensure that the anchor 200 can achieve better flipping during the pulling process of the pull wire 100. In order to enable the pull wire 100 to be introduced into the inner tube from the middle position of the anchor 200, a notch can be opened on the anchor 200, and the notch runs through the middle position to the proximal end of the anchor 200, so that the pull wire 100 is introduced into the inner tube through the notch.

[0114] However, the above-mentioned notch will cause the abutment position between the inner tube and the proximal end of the anchor 200 to deviate from the movement axis of the inner tube, which makes it very easy for the inner tube to push the anchor 200 to deviate from the movement axis of the inner tube when pushing the anchor 200 to puncture the tissue. In other words, during the pushing process of the inner tube, the anchor 200 is very likely to have an angle with the inner tube, thereby preventing the anchor 200 from smoothly entering the gallbladder.

[0115] Figure 2a is a schematic structural diagram of another anchoring device provided in an embodiment of the present application. Figure 2b yes Figure 2a A partial enlarged view of the A in the middle. Figure 1 , Figure 2a and Figure 2b As shown, in some other examples, the anchoring device may also include a puncture needle 20. When the anchor 10 needs to be implanted, the puncture needle 20 can be implanted through the intestine and gallbladder in sequence under the guidance of an endoscope. When the distal end of the puncture needle 20, i.e., the needle tip, reaches a preset position in the gallbladder, the anchor 10 is moved along the needle track of the puncture needle 20 until the anchor 200 of the anchor 10 extends out of the distal end of the puncture needle 20, thereby achieving the purpose of implanting the anchor 200 into the gallbladder.

[0116] In order to facilitate the implantation of the anchor 10, in some examples, the pull wire 100 is formed of a hard material, and there is a rebound force between it and the anchor 200, that is, the anchor 200 has a force to rebound to the anchor position, wherein the anchor position is the position when the anchor 200 has a preset angle with the pull wire 100. During the implantation process, the anchor 200 moves along the needle track of the puncture needle 20 under the push of the hard pull wire 100 until the anchor 200 extends out of the needle head of the puncture needle 20. Under the action of the rebound force, the anchor 200 has a preset angle with the pull wire 100, thereby pulling the pull wire 100, so that the anchor 200 can drive the gallbladder to be close to the intestine.

[0117] However, in the above example, during the movement of the anchor 10 along the puncture needle 20, the anchor 200 will be parallel to the pull wire 100 or have a storage angle smaller than the preset angle under the constraint of the puncture needle 20. However, since the anchor 200 has a rebound force to restore to the anchored position, the force between the anchor 200 and the inner wall of the needle channel of the puncture needle 20 is relatively large, resulting in a relatively large resistance between the anchor 200 and the inner wall of the needle channel of the puncture needle 20 during the movement, thereby affecting the smooth implantation of the anchor 10.

[0118] In addition, since the pull wire 100 is made of a hard material, it needs to push the anchor 200 to move along the puncture needle 20. Therefore, the diameter of the pull wire 100 is relatively large. For example, in this example, the diameter of the hard pull wire 100 can be 0.63 mm. In order to avoid occupying too much space in the endoscope forceps channel, in the actual operation, after the anchor 200 is implanted into the target tissue and before the fixed frame is implanted, the endoscope is first withdrawn and then inserted to the side of the pull wire, so that the pull wire is located outside the endoscope forceps channel, and then the fixed frame is implanted through the endoscope forceps channel. The entire operation process is cumbersome and complicated.

[0119] In addition, when there is no need to re-implant the endoscope, the size of the fixation frame needs to be reduced, which affects the installation of the fixation frame and the actual drainage effect.

[0120] The embodiment of the present application provides an anchoring device and an anchor, by setting the pull wire as a flexible member, and setting the pull wire in a driving tube, so that when the anchor at one end of the pull wire needs to be implanted, the puncture needle can be implanted into the target tissue first, and then the pull wire and the anchor can be driven by the driving tube to move along the puncture needle toward the target tissue until the anchor extends out of the distal end of the puncture needle. The anchor can be flipped under the pull of the pull wire to form an angle with the pull wire, so that the anchor can stop at the inner wall of the target tissue, so that the pull wire can be pulled continuously, and the target tissue can be closely attached to other tissues under the drive of the anchor. The setting of the driving tube can make the flexible pull wire and the anchor be smoothly implanted into the target tissue through the puncture needle.

[0121] In addition, by setting the pulling wire as a flexible part, the elastic force between the flexible part and the anchor is avoided, so that the anchor will not excessively contact the side wall of the puncture needle when moving in the puncture needle, reducing the friction between the anchor and the puncture needle, ensuring that the anchor moves stably along the puncture needle under the drive of the driving tube, thereby improving the implantation stability and implantation efficiency of the anchor. In addition, because the puncture needle is implanted in advance, the anchor of the embodiment of the present application does not need to puncture the tissue, but only needs to move along the puncture needle to the inside of the gallbladder, thereby avoiding the situation where the anchor is implanted in the target tissue at an angle, further improving the implantation efficiency and implantation success rate of the anchor.

[0122] The structure of the anchoring device and the anchor provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0123] Figure 3 is a schematic diagram of the overall structure of an anchor provided by an embodiment of the present application, Figure 4 yes Figure 3 Cross-sectional view of the mid-distal locking structure, Figure 5 yes Figure 4 The local schematic diagram of point B in the middle, Figure 6 is a schematic structural diagram of an anchor provided by an embodiment of the present application in a first state, Figure 7 is a schematic diagram of the structure of the anchor provided by an embodiment of the present application in the second state. Figures 1 to 7 As shown, the embodiment of the present application provides an anchoring device, including an anchor 10 and a puncture needle 20. The distal end of the puncture needle 20 (refer to Figure 1 20b) is configured to extend into the target tissue. For example, when the anchor 10 needs to be implanted, the puncture needle 20 can be first implanted into the first tissue such as the intestine along the cannula of the endoscope, and then the puncture needle 20 is implanted, so that the distal end of the puncture needle 20 passes through the tissue arm of the first tissue and the tissue wall of the target tissue, and finally reaches a preset position in the target tissue such as the gallbladder. The preset position is a position where the distal end of the puncture needle 20 can be better visualized.

[0124] Exemplarily, the puncture needle 20 may include, but is not limited to, a 19G ultrasonic needle.

[0125] In the embodiment of the present application, the anchor 10 includes a pull wire 100, which is a flexible member. For example, the pull wire 100 may be a flexible wire made of fiber material or other flexible materials. The embodiment of the present application does not limit the material of the pull wire 100, and it is only necessary to ensure that the pull wire 100 is a flexible member.

[0126] The anchor 10 includes an anchor 200 connected to the distal end of the pull wire 100 and can be pulled by the pull wire 100 .

[0127] In some examples, the anchor 200 may be flipped under the pulling of the puller wire 100 , so that an anchoring angle is formed between the anchor 200 and the puller wire 100 .

[0128] In other examples, the anchor 200 may be flipped in other ways. For example, the anchor 200 may be flipped by a driving member disposed at the distal end of the puncture needle 20 or the pull wire 100. The embodiment of the present application does not limit the flipping method of the anchor 200.

[0129] The anchoring angle is the angle between the anchor 200 and the pull line 100 when the target tissue, such as the gallbladder, is pulled close to the intestine. For example, the anchoring angle may be 90° or 90°±10°, and may be adjusted according to the angle of the side wall of the gallbladder so that the anchor 200 fits the side wall of the gallbladder. The embodiment of the present application does not limit the anchoring angle.

[0130] Reference Figure 3 and Figure 4 As shown, the anchor 10 of the embodiment of the present application includes a drive tube 300, at least a portion of which is sleeved on at least a portion of the pull line 100. The anchor 200 can move along the puncture needle 20 under the drive of the drive tube 300. For example, the anchor 200 can move from the proximal end of the puncture needle 20 (refer to Figure 1 20a) enters into the needle track of the puncture needle 20 and moves along the needle track of the puncture needle 20, and when extending out of the distal end of the puncture needle 20, it can be flipped under the pull of the pulling wire 100 to form an angle with the pulling wire 100, such as an anchoring angle, so that the anchor 200 stops at the inner wall of the target tissue, thereby continuing to pull the pulling wire 100, so that the target tissue is driven by the anchor 200 to be tightly attached to the outer wall of the first tissue, thereby completing the anchoring of the target tissue.

[0131] For the convenience of description, the needle track of the puncture needle 20 may extend in the x direction, and the radial direction of the needle track may be in the y direction. The radial dimension of the drive tube 300 may be less than or equal to the radial dimension of the puncture needle 20 along the y direction, so that the drive tube 300 can move smoothly along the needle track of the puncture needle 20.

[0132] In some examples, the driving tube 300 may be entirely sleeved on the pull wire 100, for example, the driving tube 300 may be entirely sleeved on the first portion of the pull wire 100. When the anchor 200 is located outside the driving tube 300, the first portion may be the portion between the distal end 100b and the proximal end 100a of the pull wire 100, so that a portion of the pull wire 100 close to the proximal end extends from the proximal side 300a of the driving tube 300 and may be exposed on the proximal side of the driving tube 300, so that the operator can pull the pull wire 100 from the proximal end of the pull wire 100, so that the pull wire 100 drives the anchor 200 to flip, and also so that the portion of the pull wire 100 close to the distal end extends from the distal side 300b of the driving tube 300, is located outside the driving tube 300, and can be connected to the anchor 200, so as to achieve flipping of the anchor 200.

[0133] In some other examples, a portion of the driving tube 300 may be sleeved on the pull wire 100. For example, a hole may be formed on the side wall of the driving tube 300, and the proximal end or the distal end of the pull wire 100 may extend out of the driving tube 300 from the hole. For example, a hole may be formed on the side wall of the driving tube 300 near the proximal end, and the proximal end of the pull wire 100 may extend out of the driving tube 300 from the hole.

[0134] When the anchor 200 is located inside the driving tube 300, the first portion may also be a portion between the distal end of the puller wire 100 and a position of a first length from the distal end. For example, the first length may be a suitable length such as 2 / 3 or 3 / 4 of the total length of the puller wire 100. That is, the proximal end (refer to Figure 1 100a) and a position of a second length from the proximal end can be exposed at the proximal side of the driving tube 300, so that the operator can pull the pull wire 100 from the proximal end of the pull wire 100, so that the pull wire 100 drives the anchor 200 to flip.

[0135] It can be understood that the second length is equal to the difference between the total length of the pull line 100 and the first length. For example, the second length can be a suitable length such as 1 / 3 or 1 / 4 of the total length of the pull line 100. The embodiment of the present application does not limit the first length and the second length, as long as it is ensured that the driving tube 300 can drive the pull line 100 and the anchor 200 to be smoothly implanted into the target tissue along the puncture needle 20, and the operator can pull the proximal end of the pull line 100 to turn the anchor 200 and anchor the target tissue on the outer wall of the first tissue.

[0136] Reference Figures 1 to 7 As shown, the following takes the first tissue as the intestine and the target tissue as the gallbladder as an example to exemplarily illustrate the implantation process of the anchor 10:

[0137] After the puncture needle 20 is implanted in place, the pull wire 100 and the anchor 200 at the distal end of the pull wire 100 can be pushed from the proximal end of the puncture needle 20 into the needle track of the puncture needle 20 through the driving tube 300;

[0138] Continue to push the driving tube 300 to advance the anchor 200 toward the distal end of the puncture needle 20 until the anchor 200 extends out of the distal end of the puncture needle 20 and extends to the distal side of the driving tube 300, and then pull the pulling wire 100 to flip the anchor 200 to the anchoring angle.

[0139] It should be noted that, in this step, the anchor 200 extending out of the distal end of the puncture needle 20 means that the entire part of the anchor 200 completely extends out of the distal end of the puncture needle 20, or it may be that part of the anchor 200 extends out of the distal end of the puncture needle 20, as long as the pulling wire 100 is pulled so that the proximal end of the anchor 200 can move to the outside of the distal end of the puncture needle 20 during the flipping process.

[0140] The puncture needle 20 is withdrawn so that the puncture needle 20 is withdrawn into the clamp channel of the endoscope, and the driving tube 300 is withdrawn into the puncture needle 20; then the puncture needle 20 is withdrawn together with the driving tube 300, and the pulling wire 100 is left in the clamp channel;

[0141] The pull wire 100 is pulled, for example, from the proximal end of the pull wire 100 , so that the anchor 200 is first attached to the inner wall of the gallbladder, and then the gallbladder is pulled to the outer wall of the intestine to achieve anchoring of the gallbladder.

[0142] The anchoring device of the embodiment of the present application can also be used in ESD surgery. For example, during the process of cutting tissue in ESD surgery, the anchor 200 in the anchoring device can pull the mucosa to prevent the tissue from covering the electric knife and improve the surgical field of view.

[0143] Reference Figure 6 and Figure 7 As shown, in some examples, the driving tube 300 can be sleeved on the pull wire 100, and the anchor 200 is located on the distal side of the driving tube 300, that is, the driving tube 300 is only sleeved on the pull wire 100, and the anchor 200 is exposed outside the driving tube 300 and is located on the distal side of the driving tube 300.

[0144] When anchor 200 is located within puncture needle 20, the proximal end of anchor 200 (see Figure 5 and Figure 6 200a) abuts against the distal end of the driving tube 300 so that when the anchor 200 extends out of the puncture needle 20, for example, when the proximal end of the anchor 200 is flush with the distal end of the puncture needle 10, the anchor 200 can be flipped under the abutment of the driving tube 300 and the pulling of the pulling wire 100.

[0145] Reference Figure 6 and Figure 7As shown, for example, during the implantation of the anchor 10, the drive tube 300 may first push the distal end of the anchor 200 (see Figures 5 to 7 200b), gradually enters from the proximal end of the puncture needle 20 into the needle track of the puncture needle 20, and then the distal end of the driving tube 300 abuts the proximal end of the anchor 200, so that the anchor 200 is pushed toward the distal end of the puncture needle 20, until the anchor 200 extends out of the distal end of the puncture needle 20. For example, when the proximal end of the anchor 200 just reaches the distal end of the puncture needle 20, the driving tube 300 can continue to abut the anchor 200 and simultaneously pull the pulling wire 100, so that the anchor 200 can achieve stable flipping with the assistance of the abutment of the driving tube 300 and the pulling of the pulling wire 100.

[0146] Of course, in some examples, when the anchor 200 extends out of the distal end of the puncture needle 20 , it is not necessary for the driving tube 300 to abut against the anchor 200 , and the anchor 200 can be flipped under the pulling of the pull wire 100 .

[0147] When the anchor 200 is located in the puncture needle 20, the length direction of the anchor 200 may be parallel to the extension direction of the puncture needle 20, or may have an angle with the extension direction of the puncture needle 20. However, because the pull wire 100 is configured as a flexible member, there is no resilience between the pull wire 100 and the anchor 200, so that the anchor 200 will not excessively resist the side wall of the puncture needle 20 when moving in the puncture needle 20, and only moves along the side wall of the puncture needle 20, thereby reducing the friction between the anchor 200 and the puncture needle 20, ensuring that the anchor 200 moves stably along the puncture needle 20 under the drive of the driving tube 300, thereby improving the implantation stability and implantation efficiency of the anchor 200.

[0148] In some other examples, the driving tube 300 can be sleeved on the outer periphery of the pull wire 100 and the anchor 200, that is, the anchor 200 and the pull wire 100 are both located in the driving tube 300. During the implantation process of the anchor 10, the distal end of the driving tube 300 can gradually enter the needle track of the puncture needle 20 from the proximal end of the puncture needle 20, so that the anchor 200 and part of the pull wire 100 enter the needle track of the puncture needle 20, and then push the driving tube 300, so that the driving tube 300 is advanced toward the distal end of the puncture needle 20, until the anchor 200 reaches the distal end of the puncture needle 20 driven by the driving tube 300, for example, the distal end of the driving tube 300 is flush with the distal end of the anchor 200, and the distal end of the driving tube 300 is When the distal end of the anchor 200 just reaches the distal end of the puncture needle 20, it indicates that the distal end of the anchor 200 reaches the distal end of the puncture needle 20, and then the driving tube 300 can be withdrawn, so that the anchor 200 is exposed from the driving tube 300, and the proximal end of the anchor 200 can be pressed against the distal end of the driving tube 300; then the driving tube 300 is continued to be pushed toward the distal end of the puncture needle 20, so that the anchor 200 is exposed from the puncture needle 20 under the push of the driving tube 300, until the proximal end of the anchor 200 just reaches the distal end of the puncture needle 20, the driving tube 300 can continue to press against the anchor 200, and at the same time pull the pulling line 100, so that the anchor 200 can achieve stable flipping with the assistance of the pressing of the driving tube 300 and the pulling of the pulling line 100.

[0149] Of course, in some examples, a portion of the anchor 200 can be set in the driving tube 300, and the other portion can be exposed outside the driving tube 300. When the distal end of the anchor 200 reaches the distal end of the puncture needle 20, the driving tube 300 can be retracted so that the proximal end of the anchor 200 abuts against the distal end of the driving tube 300, and the driving tube 300 is continuously pushed toward the distal end of the puncture needle 20, so that the anchor 200 is exposed from the puncture needle 20 under the push of the driving tube 300, until the proximal end of the anchor 200 just reaches the distal end of the puncture needle 20, the driving tube 300 can continue to abut against the anchor 200, so that the anchor 200 can achieve stable flipping with the assistance of the abutment of the driving tube 300 and the pulling of the pulling line 100.

[0150] It can be understood that in the above example, since the pull wire 100 is a flexible member, there is no resilience between the pull wire 100 and the anchor 200, so that the anchor 200 will not tightly contact the side wall of the driving tube 300, so that the degree of contact between the anchor 200 and the inner wall of the driving tube 300 can allow relative movement between the anchor 200 and the driving tube 300 when the driving tube 300 is withdrawn. It is only necessary to ensure that the anchor 200 and the pull wire 100 can be pushed to the distal end of the puncture needle 20 together during the advancement of the driving tube 300.

[0151] In addition, since the puncture needle 20 is pre-implanted, the anchor 200 of the embodiment of the present application does not need to puncture the tissue, but only needs to move along the puncture needle 20 to the inside of the gallbladder, thereby avoiding the situation where the anchor 200 is implanted in the target tissue at an angle, further improving the implantation efficiency and implantation success rate of the anchor 200.

[0152] Compared with the above-mentioned example of a hard puller wire 100, the provision of a flexible puller wire 100 and a driving tube 300 can reduce the diameter of the puller wire 100, thereby reducing the size of the puller wire 100 occupied by the endoscope forceps channel, thereby eliminating the need to withdraw the endoscope before implanting the fixing frame and re-implant it next to the puller wire 100, thereby simplifying the surgical procedure and improving the surgical efficiency. In addition, there is no need to reduce the size of the fixing frame, thereby ensuring the installation efficiency and stability of the fixing frame, as well as the drainage effect of the fixing frame.

[0153] Exemplarily, the diameter of the flexible pull wire 100 may be 0.15 mm, 0.1 mm or 0.2 mm, which are smaller than the diameter of the hard pull wire 100. The embodiment of the present application does not limit the diameter size of the pull wire 100, as long as the pull wire 100 can pull the anchor 200 to flip.

[0154] Reference Figure 2b and 4 As shown, in some examples, the anchor 10 may include a distal locking structure 400. The distal locking structure 400 is configured to be fixed to the proximal end of the puncture needle 20, for example, with reference to Figure 2b The proximal end of the puncture needle 20 shown may have a fixing portion 21, and the distal locking structure 400 may be fixed to the fixing portion 21 by means of internal and external thread matching, snap connection, flange connection, etc., so as to achieve fixation of the anchor 10 and the proximal end of the puncture needle 20.

[0155] Exemplarily, an inclined guide surface is formed at one end of the distal locking structure 400 that cooperates with the fixing portion 21, so that the end of the distal locking structure 400 forms a guide portion 411 with a conical structure. During assembly, the guide portion 411 can be first extended into the fixing portion 21 to achieve pre-positioning of the distal locking structure 400 and the fixing portion 21, and then the distal locking structure 400 can be fixed to the fixing portion 21 by means of threaded engagement or the like.

[0156] Since the anchor 10 is relatively long, the setting of the guide portion 411 can preliminarily position the distal locking structure 400 on the fixing portion 21 of the puncture needle 20, thereby facilitating quick assembly and fixation of the distal locking structure 400 and the fixing portion 21, thereby avoiding the situation where the anchor 10 shakes randomly and cannot be quickly assembled with the fixing portion 21.

[0157] Exemplarily, a first receiving channel 430 is formed in the distal locking structure 400, the first receiving channel 430 is communicated with the needle track of the puncture needle 20, and part of the driving tube 300 and the anchor 200 are located in the first receiving channel 430. For example, the driving tube 300 and the anchor 200 located at the distal end of the driving tube 300 are located in the first receiving channel 430.

[0158] During the implantation of the anchor 10, the distal locking structure 400 can be first fixed to the fixing portion 21 at the proximal end of the puncture needle 20 to fix the anchor 10, and then the driving tube 300 can be pushed so that the driving tube 300 and the anchor 200 transition to the puncture needle 20 along the first receiving channel 430. The provision of the distal locking structure 400 can facilitate the driving tube 300 and the anchor 200 to align with the distal end of the puncture needle 20, and can quickly push the anchor 200 into the needle track of the puncture needle 20, thereby improving the implantation efficiency of the anchor 10 into the puncture needle 20.

[0159] In some examples, the distal locking structure 400 can selectively cooperate with the driving tube 300 to lock the driving tube 300 and the anchor 200 in the first receiving channel 430, so that when the anchor 10 is docked with the proximal end of the puncture needle 20, the driving tube 300 can drive the anchor 200 to quickly enter the needle track of the puncture needle 20. For example, before the anchor 200 is implanted into the puncture needle 20, the distal locking structure 400 can cooperate with the driving tube 300 so that the driving tube 300 and the anchor 200 are locked in the first receiving channel 430 to prevent the driving tube 300 from driving the anchor 200 to mistakenly extend into the first receiving channel 430 before the anchor 10 is fixed with the puncture needle 20, so that the anchor 200 is in a free state and cannot be quickly docked with the proximal end of the puncture needle 20.

[0160] In addition, when the anchor 200 is flipped to the anchoring angle, while the puncture needle 20 and the driving tube 300 are retracted at the same time, the distal locking structure 400 can cooperate with the driving tube 300 so that the driving tube 300 is locked on the puncture needle 20, so that during the retraction of the puncture needle 20, the driving tube 300 can be synchronously retracted outside the body, leaving the pull wire 100 in the clamp channel of the endoscope.

[0161] When the driving tube 300 needs to move relative to the puncture needle 20, the driving tube 300 can be released by the distal locking structure 400 so that the driving tube 300 can move along the puncture needle 20. For example, when the distal end of the puncture needle 20 reaches a preset position, the driving tube 300 can be released by the distal locking structure 400, so that the driving tube 300 can be pushed toward the puncture needle 20, so that the pull wire 100 and the anchor 200 can be pushed toward the target tissue along the puncture needle 20.

[0162] In some examples, the distal locking structure 400 may be a cylindrical structure, and a first receiving channel 430 is formed inside the cylindrical structure along the length direction of the cylindrical structure for the driving tube 300 and the anchor 200 to pass through.

[0163] For example, an elastic protrusion may be formed on the inner wall of the distal locking structure 400, and the elastic protrusion extends toward the first receiving channel 430. By making the elastic protrusion contact the outer wall of the driving tube 300, the driving tube 300 and the anchor 200 are locked on the distal locking structure 400. When the distal locking structure 400 is fixed to the fixing part 21 and the anchor 200 needs to be implanted, the elastic protrusion may be separated from the outer wall of the driving tube 300, so that the driving tube 300 and the anchor 200 are released from the distal locking structure 400, so that the driving tube 300 can move along the puncture needle 20. By forming an elastic protrusion on the inner wall of the distal locking structure 400 to lock the driving tube 300, the structure and assembly process of the distal locking structure 400 can be simplified.

[0164] Continue to refer to Figure 4 As shown, in some other examples, the distal locking structure 400 may include a distal connector 410 and a distal locking member 420, wherein the distal connector 410 is configured to be fixed to the proximal end of the puncture needle 20, and is formed with at least a portion of the first receiving channel 430 for the driving tube 300 and the anchor 200 to pass through. For example, the distal connector 410 is fixedly connected to the fixing portion 21 at the proximal end of the puncture needle 20.

[0165] The distal locking member 420 is disposed on the distal connecting member 410 and is configured to selectively cooperate with the driving tube 300 to lock or release the driving tube 300 and the anchor 200 on the distal connecting member 410 .

[0166] Exemplarily, when the distal locking piece 420 cooperates with the driving tube 300, the driving tube 300 can be locked on the distal connecting piece 410; when the distal locking piece 420 is disengaged from the driving tube 300, the driving tube 300 can be released from the distal connecting piece 410, so that the driving tube 300 can move relative to the distal connecting piece 410, so that the driving tube 300 can push the anchor 200 along the first receiving channel 430 into the needle track of the puncture needle 20.

[0167] In some examples, the distal locking member 420 can be a stop pin that is inserted into the distal connector 410. For example, the distal connector 410 has a pin hole, and the stop pin is inserted into the pin hole. After the distal connector 410 is fixedly connected to the fixing portion 21 of the puncture needle 20, the stop pin can be further pushed into the pin hole until one end of the stop pin contacts the outer wall of the drive tube 300, thereby locking the drive tube 300 and the anchor 200. When the stop pin is pulled outward so that one end of the stop pin is separated from the drive tube 300, the drive tube 300 and the anchor 200 can be released.

[0168] In some other examples, the distal locking member 420 may include a distal fixing portion 421 and a distal locking portion 422. The distal fixing portion 421 is formed with a first receiving channel 430 and can be selectively fixed or released from the distal connecting member 410. In other words, the distal fixing portion 421 can be fixed to the distal connecting member 410 or released from the distal connecting member 410.

[0169] The distal locking portion 422 is located inside the distal fixing portion 421. When the distal fixing portion 421 is fixed to the distal connector 410, the distal locking portion 422 is configured to cooperate with the distal connector 410 and act on the drive tube 300 to lock the drive tube 300 and the anchor 200.

[0170] For example, the distal fixing portion 421 is a tubular structure, which can be sleeved on a partial structure of the distal connecting piece 410 when fixed to the distal connecting piece 410, and the distal locking portion 422 is located on the inner wall of the distal fixing portion 421, that is, on the inner wall of the first receiving channel 430.

[0171] Exemplarily, the distal fixing portion 421 is a hollow structure, and the end of the distal fixing portion 421 away from the distal connector 410 has a through hole (e.g., a first through hole 423) for the drive tube 300 to pass through, and the end of the distal fixing portion 421 facing the distal connector 410 is an open structure, and the open structure allows the distal connector 410 to enter the distal fixing portion 421 and connect with the distal fixing portion 421. It can be understood that the hollow inner cavity of the distal fixing portion 421 can be used as a part of the first receiving channel 430. When the distal fixing portion 421 is separated from the distal connector 410, the hollow inner cavity allows the drive tube 300 to pass through, and the first through hole 423 at the end of the distal fixing portion 421 serves as another part of the first receiving channel 430, so that the proximal end of the drive tube 300 can pass through the distal locking structure 400.

[0172] Exemplarily, the distal fixing portion 421 can be a distal locking nut, which is threadedly connected to the distal connecting piece 410 to simplify the connection structure between the distal fixing portion 421 and the distal connecting piece 410, and also facilitate fixing the distal locking portion 422 in the distal fixing portion 421 and facilitating the cooperation of the distal locking portion 422 with the distal connecting piece 410.

[0173] When the distal fixing portion 421 is fixed on the distal connecting member 410, one end of the distal connecting member 410 extends into the distal fixing portion 421 and abuts against the distal locking portion 422. Under the abutment of the distal connecting member 410, one end of the distal locking portion 422 acts on the driving tube 300, for example, one end abuts against the driving tube 300 to lock the driving tube 300 and the anchor 200.

[0174] When the distal fixing portion 421 is released from the distal connector 410, the distal locking portion 422 is configured to be separated from the distal connector 410 to release the drive tube 300 and the anchor 200. For example, when the distal fixing portion 421 is released from the distal connector 410, one end of the distal connector 410 will be separated from the interior of the distal fixing portion 421, thereby being separated from the distal locking portion 422. After the distal locking portion 422 is separated from the abutment of the distal connector 410, it can be restored to the original position, so that one end of the distal locking portion 422 is separated from the drive tube 300 to release the drive tube 300 and the anchor 200.

[0175] Exemplarily, the distal locking portion 422 can be a lever (such as a first lever) arranged on the inner wall of the distal fixing portion 421, and the initial angle between the first lever and the inner wall of the distal fixing portion 421 is less than 90° and is inclined toward the direction of the distal connecting member 410.

[0176] When the distal fixing portion 421 is fixed on the distal connecting member 410, one end of the distal connecting member 410 extends into the distal fixing portion 421 and abuts against the first lever. The first lever rotates under the abutment and push of the distal connecting member 410, so that the first lever rotates in a direction perpendicular to the inner wall of the distal fixing portion 421 until the free end of the first lever is on the driving tube 300, thereby locking the driving tube 300.

[0177] When the distal fixing portion 421 is released from the distal connecting member 410, one end of the distal connecting member 410 will be separated from the interior of the distal fixing portion 421, thereby separating from the first lever. After the first lever is separated from the abutment of the distal connecting member 410, it can be rotated to the initial position, that is, the angle between the first lever and the inner wall of the distal fixing portion 421 is the initial angle, so that the free end of the first lever is separated from the driving tube 300 to release the driving tube 300.

[0178] The embodiment of the present application links the locking and releasing process of the distal locking portion 422 on the driving tube 300 with the fixing and releasing of the distal fixing portion 421 relative to the distal connecting member 410. For example, when the distal fixing portion 421 is fixed to the distal connecting member 410, the distal locking portion 422 will lock the driving tube 300 with the cooperation of the distal connecting member 410; when the distal fixing portion 421 is released from the distal connecting member 410, the distal locking portion 422 will release the driving tube 300 and the anchor 200. In this way, the operator can achieve the locking and releasing of the driving tube 300 by the distal locking portion 422 by operating the distal fixing portion 421 without performing other additional locking operations, thereby simplifying the locking and releasing process of the driving tube 300.

[0179] In some examples, the distal locking portion 422 may be a distal elastic member embedded in the distal fixing portion 421, and the distal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the driving tube 300. When the distal fixing portion 421 is fixed to the distal connecting member 410, the distal elastic member is squeezed by the distal connecting member 410 and contacts the driving tube 300 along the first direction to lock the driving tube 300 and the anchor 200; when the distal fixing portion 421 is released from the distal connecting member 410, the distal elastic member is separated from the distal connecting member 410 to release the driving tube 300 and the anchor 200 during the rebound process.

[0180] Exemplarily, the distal elastic member is disposed between the inner wall of the distal fixing portion 421 and the driving tube 300, wherein the distal elastic member has a first end and a second end opposite to each other along a first direction, the first end abuts against the inner wall of the distal fixing portion 421, and the second end contacts the outer wall of the driving tube 300. It should be noted that the first direction may be perpendicular to the extension direction of the driving tube 300, or the angle between the first direction and the extension direction of the driving tube 300 may be an obtuse angle or an acute angle. Figure 4 It can be understood that the a direction can be the y direction, or can have an angle with the y direction.

[0181] It can be understood that the angle between the extension directions of the driving tube 300 refers to the angle between the first end of the distal elastic member and the driving tube 300 toward the distal connecting member 410 .

[0182] Taking the first direction perpendicular to the extension direction of the driving tube 300, that is, the first direction is the y direction as an example, there is a certain gap between the part of the first end of the distal elastic member close to the distal connecting member 410 and the inner wall of the distal fixing portion 421. It can be understood that in the initial state, when the second end of the distal elastic member contacts the driving tube 300, the driving tube 300 can move relative to the distal fixing portion 421, that is, in the initial state, the second end of the distal elastic member is only in simple contact with the driving tube 300, and the force between the second end of the distal elastic member and the driving tube 300 is relatively small.

[0183] When the distal fixing portion 421 is fixed on the distal connecting member 410, the distal connecting member 410 extends into the gap between the first end of the distal elastic member and the distal fixing portion 421, and the distal elastic member is squeezed by the distal connecting member 410 and contacts the driving tube 300 along the first direction. For example, the distal connecting member 410 squeezes the distal elastic member along the first direction, so that the second end of the distal elastic member is in close contact with the driving tube 300, that is, the force between the second end of the distal elastic member and the driving tube 300 is increased to lock the driving tube 300 and the anchor 200; when the distal fixing portion 421 is released from the distal connecting member 410, the distal elastic member is detached from the distal connecting member 410, and the distal elastic member returns to its initial state, so that the force between the second end of the distal elastic member and the driving tube 300 is reduced, that is, the distal elastic member releases the driving tube 300 and the anchor 200 during the rebound process.

[0184] Of course, in some examples, when the first direction forms an acute angle with the extension direction of the driving tube 300, when the distal fixing portion 421 is fixed to the distal connecting member 410, the distal connecting member 410 tilts along the first direction to squeeze the distal elastic member, and under the squeezing of the distal connecting member 410, the second end of the distal elastic member contacts the driving tube 300 to lock the driving tube 300 and the anchor 200; when the distal fixing portion 421 is released from the distal connecting member 410, the distal elastic member detaches from the distal connecting member 410, and the distal elastic member returns to its initial state along the first direction, so that the acting force between the second end of the distal elastic member and the driving tube 300 is reduced, that is, the distal elastic member releases the driving tube 300 and the anchor 200 during the rebound process.

[0185] In some examples, the distal elastic member may be a spring, an elastic gasket, etc. When the distal elastic member is a spring or an elastic gasket, etc., the distal elastic member may be one or more. When there is one distal elastic member, the distal elastic member is disposed at any position along the circumference of the distal fixing portion 421. When there are multiple distal elastic members, the multiple distal elastic members may be disposed at intervals along the circumference of the inner wall of the distal fixing portion 421, that is, the multiple distal elastic members are disposed at intervals around the circumference of the driving tube 300, so that the second ends of the multiple distal elastic members can contact multiple positions along the circumference of the driving tube 300 when squeezed by the distal connecting member 410, thereby achieving stable locking of the driving tube 300.

[0186] By setting the distal locking piece 420 as a distal elastic piece, on the one hand, it is convenient to assemble the distal locking piece 420 between the distal fixing portion 421 and the driving tube 300, and on the other hand, it also enables the distal locking piece 420 to reliably cooperate with the distal connecting piece 410 and deform accordingly, thereby improving the reliability of locking the driving tube 300. In addition, the distal locking piece 420 is set as a distal elastic piece, which also enables the distal locking piece 420 to smoothly rebound to the original position after being detached from the distal connecting piece 410, thereby improving the release reliability of the driving tube 300.

[0187] In some examples, the distal elastic member may be a distal elastic sleeve. The distal elastic sleeve is formed with a first through hole for the driving tube 300 to pass through. For example, the distal elastic sleeve is sleeved on a portion of the outer wall of the driving tube 300, and the distal elastic sleeve is received in the end inner cavity of the distal fixing portion 421.

[0188] When the distal elastic sleeve is in the initial state, ie, not matched with the distal connector 410 , the hole wall of the first through hole is only in simple contact with the driving tube 300 , and the driving tube 300 can move relatively in the first through hole.

[0189] When the distal connector 410 enters the distal fixing portion 421 and squeezes the distal elastic sleeve, the hole wall of the first through hole of the distal elastic sleeve contacts the driving tube 300 under the squeezing of the distal connector 410 to lock the driving tube 300 and the anchor 200, and after detaching from the distal connector 410, the hole wall of the first through hole rebounds to release the driving tube 300 and the anchor 200.

[0190] For example, when the distal fixing portion 421 is fixed to the distal connecting member 410, the distal connecting member 410 squeezes the distal elastic sleeve along a first direction. After being squeezed by the distal connecting member 410, the distal elastic sleeve is deformed, i.e., compressed, at least along the first direction, and the hole wall of the first through hole thereof contacts the driving tube 300, so that the force between the hole wall of the first through hole and the driving tube 300 increases, so as to lock the driving tube 300 and the anchor 200; when the distal fixing portion 421 is released from the distal connecting member 410, the distal elastic sleeve detaches from the distal connecting member 410, and the distal elastic sleeve returns to its initial state, so that the force between the hole wall of the first through hole and the driving tube 300 is reduced, that is, the distal elastic sleeve releases the driving tube 300 and the anchor 200 during the rebound process.

[0191] By configuring the distal elastic member as a distal elastic sleeve, after the distal elastic sleeve is squeezed by the distal connector 410 , it can contact the entire circumferential surface of the driving tube 300 , thereby achieving stable locking of the driving tube 300 .

[0192] Exemplarily, the distal elastic sleeve may include a sleeve body structure with elastic deformation, such as a silicone sleeve, and the embodiment of the present application does not limit the material of the distal elastic sleeve.

[0193] Reference Figure 4 As shown, for example, the distal elastic sleeve can be an elastic ball, so that the outer surface of the elastic ball can be uniformly squeezed and deformed by the end wall of the distal connecting piece 410, so that the inner wall of the first through hole and the force at each position of the driving tube 300 in the circumferential direction are the same, thereby ensuring that the driving tube 300 is subjected to uniform force without tilting.

[0194] Of course, in some examples, the distal elastic sleeve may also be a square or irregular sleeve structure, and the embodiment of the present application does not limit the shape of the distal elastic sleeve.

[0195] Figure 8 yes Figure 3 Cross-sectional view of the mid-proximal locking structure. Figure 3 and Figure 8 As shown, in some examples, the anchor 10 may further include a proximal locking structure 500 .

[0196] The proximal locking structure 500 is disposed at the proximal end of the driving tube 300 and is fixedly connected to the driving tube 300. For example, the proximal locking structure 500 can be fixedly connected to the driving tube 300 by welding, bonding, clamping, etc., and the embodiment of the present application does not limit the connection method between the proximal locking structure 500 and the driving tube 300.

[0197] In some examples, a second receiving channel 530 is formed in the proximal locking structure 500, and the pull wire 100 is passed through the second receiving channel 530. For example, a portion of the second receiving channel 530 can directly pass through the pull wire 100 exposed at the proximal side of the driving tube 300, and another portion can receive the proximal portion of the driving tube 300 and be fixedly connected to the driving tube 300.

[0198] Since the pull wire 100 of the embodiment of the present application is a flexible member, the driving tube 300 drives the flexible member and the anchor 200 to advance toward the distal end of the puncture needle 20.

[0199] The proximal locking structure 500 is configured to selectively cooperate with the puller wire 100 to lock the puller wire 100 on the driver tube 300 .

[0200] It can be understood that since the proximal end of the driving tube 300 is fixed to the proximal locking structure 500 , the pull wire 100 is locked in the proximal locking structure 500 , thereby making the pull wire 100 locked on the driving tube 300 .

[0201] For example, the distal end of the pull wire 100 is fixed on the anchor 200, and the anchor 200 is arranged on the distal side of the driving tube 300, and the proximal end of the anchor 200 abuts against the distal end of the driving tube 300. When there is no need to move the pull wire 100 relative to the driving tube 300, the pull wire 100 can be tightened in the driving tube 300, and the proximal locking structure 500 cooperates with the pull wire 100 to tighten and lock the pull wire 100 on the driving tube 300. In this way, the pull wire 100 can be prevented from moving relative to the driving tube 300.

[0202] Exemplarily, before the driving tube 300 carries the pull wire 100 and the anchor 200 to move into the puncture needle 20, the pull wire 100 can be tightened and locked on the driving tube 300 by the proximal locking structure 500. Then, the driving tube 300 can drive the pull wire 100 and the anchor 200 to move synchronously along the puncture needle 20 into the target tissue. In this way, the pull wire 100 can be prevented from accumulating in the puncture needle 20 during the process of transporting the anchor 200 by the driving tube 300.

[0203] For example, in the process of transporting the anchor 200, if it is accidentally retracted and then continued to be pushed forward, the pull wire 100 tightened by the proximal locking structure 500 can alleviate or avoid accumulation between the distal end of the driving tube 300 and the anchor 200, compared to a pull wire 100 without tension, thereby preventing the accumulated and entangled pull wire 100 from affecting the smooth pushing of the anchor 200 by the driving tube 300. In addition, it also avoids affecting the normal flipping of the anchor 200 during the subsequent pulling back of the pull wire 100.

[0204] When the anchor 200 needs to be moved into position and needs to be flipped, for example, when the proximal end of the anchor 200 moves to the distal end of the puncture needle 20, the proximal locking structure 500 can release the pull wire 100 so that the pull wire 100 can move relative to the drive tube 300. In this way, the anchor 200 can be flipped by pulling the pull wire 100.

[0205] In some examples, the proximal locking structure 500 may be a cylindrical structure, and a second receiving channel 530 is formed inside the cylindrical structure along the length direction of the cylindrical structure for the pull wire 100 to pass through. For example, an elastic protrusion may be formed on the inner wall of the proximal locking structure 500, and the elastic protrusion extends toward the second receiving channel 530.

[0206] When the proximal locking structure 500 is fixed to the proximal end of the driving tube 300, the elastic protrusion contacts the outer wall of the pull wire 100, so that the pull wire 100 is locked on the proximal locking structure 500. Since the proximal locking structure 500 is fixed to the driving tube 300, the pull wire 100 is locked on the driving tube 300 and cannot move relatively along the driving tube 300. When the proximal locking structure 500 is released from the driving tube 300, that is, after being released from the driving tube 300, the elastic protrusion can be separated from the outer wall of the pull wire 100, so that the pull wire 100 is released from the proximal locking structure 500, so that the pull wire 100 is released from the driving tube 300 and can move relatively along the driving tube 300. By forming the elastic protrusion on the inner wall of the proximal locking structure 500 to lock the pull wire 100, the structure and assembly process of the proximal locking structure 500 can be simplified.

[0207] Continue to refer to Figure 8 As shown, in some other examples, the proximal locking structure 500 includes a proximal connector 510 and a proximal locking member 520. The proximal connector 510 is fixed to the proximal end of the driving tube 300, and forms at least a portion of the second receiving channel 530 for the pull wire 100 to pass through. Exemplarily, the proximal portion of the driving tube 300 can also be fixed in the second receiving channel 530, and the portion of the pull wire 100 extending from the proximal end of the driving tube 300 is passed through the other portion of the second receiving channel 530.

[0208] The proximal locking member 520 is disposed on the proximal connecting member 510 and is configured to selectively cooperate with the pull wire 100 to lock or release the pull wire 100 on the proximal connecting member 510 .

[0209] Exemplarily, when the proximal locking piece 520 cooperates with the pull wire 100, the pull wire 100 can be locked on the proximal connecting piece 510, and the proximal connecting piece 510 is fixed on the proximal end of the driving tube 300, then the pull wire 100 is locked on the driving tube 300, so that the pull wire 100 is tightened inside the driving tube 300 and cannot move relative to the driving tube 300; when the proximal locking piece 520 is disengaged from the proximal connecting piece 510, the pull wire 100 can be released from the proximal connecting piece 510, that is, released from the driving tube 300, so that the pull wire 100 can move relative to the driving tube 300.

[0210] In some examples, the proximal locking member 520 can be a stop pin that is inserted into the proximal connector 510. For example, the proximal connector 510 has a pin hole, and the stop pin is inserted into the pin hole. After the proximal connector 510 is fixedly connected to the proximal end of the driving tube 300, the stop pin can be further pushed into the pin hole until one end of the stop pin contacts the outer wall of the driving pull wire 100, thereby locking the pull wire 100. When the stop pin is pulled outward so that one end of the stop pin is separated from the pull wire 100, the pull wire 100 can be released.

[0211] In some other examples, the proximal locking member 520 may include a proximal fixing portion 521 and a proximal locking portion 522. The proximal fixing portion 521 is formed with a second receiving channel 530 and can be selectively fixed or released from the proximal connecting member 510. In other words, the proximal fixing portion 521 can be fixed to the proximal connecting member 510 or released from the proximal connecting member 510.

[0212] The proximal locking portion 522 is located inside the proximal fixing portion 521. When the proximal fixing portion 521 is fixed to the proximal connecting member 510, the proximal locking portion 522 is configured to cooperate with the proximal connecting member 510 and act on the pull wire 100 to lock the pull wire 100. For example, the proximal fixing portion 521 is a cylindrical structure, which can be sleeved on a part of the structure of the proximal connecting member 510 when the cylindrical structure is fixed to the proximal connecting member 510, and the proximal locking portion 522 is located on the inner wall of the proximal fixing portion 521, that is, on the inner wall of the second receiving channel 530.

[0213] Exemplarily, the proximal fixing portion 521 is a hollow structure, and the end of the proximal fixing portion 521 close to the proximal connector 510 has a through hole (e.g., a second through hole 523) for the pull wire 100 to pass through, and the end of the proximal fixing portion 521 facing the proximal connector 510 is an open structure, and the open structure allows the proximal connector 510 to enter the proximal fixing portion 521 and connect with the proximal fixing portion 521. It can be understood that the hollow inner cavity of the proximal fixing portion 521 can be used as a part of the second receiving channel 530. When the proximal fixing portion 521 is separated from the proximal connector 510, the hollow inner cavity allows the pull wire 100 to pass through, and the second through hole 523 at the end of the proximal fixing portion 521 serves as another part of the second receiving channel 530, so that the proximal end of the pull wire 100 can pass through the proximal locking structure 500.

[0214] Exemplarily, the proximal fixing portion 521 can be a proximal locking nut, which is threadedly connected to the proximal connecting member 510 to simplify the connection structure between the proximal fixing portion 521 and the proximal connecting member 510, and also facilitate the fixing of the proximal locking portion 522 in the proximal fixing portion 521 and the cooperation of the proximal locking portion 522 with the proximal connecting member 510.

[0215] When the proximal fixing portion 521 is fixed on the proximal connecting member 510, one end of the proximal connecting member 510 extends into the proximal fixing portion 521 and abuts against the proximal locking portion 522. Under the abutment of the proximal connecting member 510, one end of the proximal locking portion 522 acts on the pulling wire 100, for example, one end abuts against the pulling wire 100 to lock the pulling wire 100.

[0216] When the proximal fixing portion 521 is released from the proximal connecting member 510 , the proximal locking portion 522 is configured to be detached from the proximal connecting member 510 to release the pulling wire 100 .

[0217] For example, when the proximal fixing portion 521 is released from the proximal connecting member 510, one end of the proximal connecting member 510 will be disengaged from the interior of the proximal fixing portion 521, thereby disengaging from the proximal locking portion 522. After the proximal locking portion 522 is disengaged from the abutment of the proximal connecting member 510, it can be restored to its original position, so that one end of the proximal locking portion 522 is disengaged from the pull wire 100 to release the pull wire 100.

[0218] Exemplarily, the proximal locking portion 522 can be a lever (e.g., a second lever) disposed on the inner wall of the proximal fixing portion 521 , the initial angle between the second lever and the inner wall of the proximal fixing portion 521 is less than 90°, and is inclined toward the direction of the proximal connector 510 .

[0219] When the proximal fixing portion 521 is fixed on the proximal connecting member 510, one end of the proximal connecting member 510 extends into the proximal fixing portion 521 and abuts against the second lever. The second lever rotates under the abutment and push of the proximal connecting member 510, so that the second lever rotates in a direction perpendicular to the inner wall of the proximal fixing portion 521 until the free end of the second lever is on the pulling wire 100, thereby locking the pulling wire 100.

[0220] When the proximal fixing portion 521 is released from the proximal connecting member 510, one end of the proximal connecting member 510 will be separated from the interior of the proximal fixing portion 521, thereby separating from the second lever. After the second lever is separated from the abutment of the proximal connecting member 510, it can be rotated to the initial position, that is, the angle between the second lever and the inner wall of the proximal fixing portion 521 is the initial angle, so that the free end of the second lever is separated from the pull wire 100 to release the pull wire 100.

[0221] The embodiment of the present application links the locking and releasing process of the pull wire 100 by the proximal locking portion 522 with the fixing and releasing of the proximal fixing portion 521 relative to the proximal connecting member 510. For example, when the proximal fixing portion 521 is fixed to the proximal connecting member 510, the proximal locking portion 522 will lock the pull wire 100 with the cooperation of the proximal connecting member 510; when the proximal fixing portion 521 is released from the proximal connecting member 510, the proximal locking portion 522 will release the pull wire 100. In this way, the operator can achieve the locking and releasing of the pull wire 100 by the proximal locking portion 522 by operating the proximal fixing portion 521 without performing other additional locking operations, thereby simplifying the locking and releasing process of the pull wire 100.

[0222] In some examples, the proximal locking portion 522 may be a proximal elastic member embedded in the proximal fixing portion 521, and the proximal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the pull wire 100;

[0223] When the proximal fixing portion 521 is fixed to the proximal connecting member 510 , the proximal elastic member is squeezed by the proximal connecting member 510 and contacts the pulling wire 100 along the first direction to lock the pulling wire 100 ;

[0224] When the proximal fixing portion 521 is released from the proximal connecting member 510 , the proximal elastic member is separated from the proximal connecting member 510 to release the pulling wire 100 during the rebound process.

[0225] Exemplarily, the proximal elastic member is disposed between the inner wall of the proximal fixing portion 521 and the pull wire 100, wherein the proximal elastic member has a first end and a second end opposite to each other along a first direction, the first end abuts against the inner wall of the proximal fixing portion 521, and the second end contacts the outer wall of the pull wire 100. It should be noted that the first direction may be perpendicular to the extension direction of the pull wire 100, or the angle between the first direction and the extension direction of the pull wire 100 may be an obtuse angle or an acute angle. It is understandable that the angle between the extension directions of the pull wire 100 refers to the angle between the first end of the proximal elastic member and the pull wire 100 toward the proximal connector 510.

[0226] Taking the first direction perpendicular to the extension direction of the pull wire 100 as an example, there is a certain gap between the portion of the first end of the proximal elastic member close to the proximal connecting member 510 and the inner wall of the proximal fixing portion 521. It can be understood that in the initial state, when the second end of the proximal elastic member contacts the pull wire 100, the pull wire 100 can move relative to the proximal fixing portion 521, that is, in the initial state, the second end of the proximal elastic member is only in simple contact with the pull wire 100, and the force between the second end of the proximal elastic member and the pull wire 100 is small.

[0227] When the proximal fixing portion 521 is fixed to the proximal connecting member 510, the proximal connecting member 510 extends into the gap between the first end of the proximal elastic member and the proximal fixing portion 521, and the proximal elastic member is squeezed by the proximal connecting member 510 and contacts the pulling wire 100 along the first direction. For example, the proximal connecting member 510 squeezes the proximal elastic member along the first direction, so that the second end of the proximal elastic member is in close contact with the pulling wire 100, that is, the force between the second end of the proximal elastic member and the pulling wire 100 is increased to lock the pulling wire 100; when the proximal fixing portion 521 is released from the proximal connecting member 510, the proximal elastic member is detached from the proximal connecting member 510, and the proximal elastic member returns to its initial state, so that the force between the second end of the proximal elastic member and the pulling wire 100 is reduced, that is, the proximal elastic member releases the pulling wire 100 during the rebound process.

[0228] Of course, in some examples, when the first direction and the extension direction of the pull line 100 are at an acute angle, when the proximal fixing portion 521 is fixed to the proximal connecting member 510, the proximal connecting member 510 tilts and squeezes the proximal elastic member along the first direction, and under the squeezing of the proximal connecting member 510, the second end of the proximal elastic member contacts the pull line 100 to lock the pull line 100; when the proximal fixing portion 521 is released from the proximal connecting member 510, the proximal elastic member detaches from the proximal connecting member 510, and the proximal elastic member returns to its initial state along the first direction, so that the acting force between the second end of the proximal elastic member and the pull line 100 is reduced, that is, the proximal elastic member releases the pull line 100 during the rebound process.

[0229] In some examples, the proximal elastic member may be a spring, an elastic gasket, etc. When the proximal elastic member is a structure such as a spring or an elastic gasket, the proximal elastic member may be one or more. When there is one proximal elastic member, the proximal elastic member is disposed at any position along the circumference of the proximal fixing portion 521. When there are multiple proximal elastic members, the multiple proximal elastic members may be disposed at intervals along the circumference of the inner wall of the proximal fixing portion 521, that is, the multiple proximal elastic members are disposed at intervals around the circumference of the pull wire 100, so that the second ends of the multiple proximal elastic members can contact multiple positions of the pull wire 100 along the circumference when squeezed by the proximal connector 510, thereby achieving stable locking of the pull wire 100.

[0230] By setting the proximal locking member 520 as a proximal elastic member, on the one hand, it is convenient to assemble the proximal locking member 520 between the proximal fixing portion 521 and the pull wire 100, and on the other hand, it also enables the proximal locking member 520 to reliably cooperate with the proximal connecting member 510 and deform accordingly, thereby improving the reliability of locking the pull wire 100. In addition, the proximal locking member 520 is set as a proximal elastic member, which also enables the proximal locking member 520 to smoothly rebound to the original position after being detached from the proximal connecting member 510, thereby improving the release reliability of the pull wire 100.

[0231] In some examples, the proximal elastic member may be a proximal elastic sleeve;

[0232] The proximal elastic sleeve is formed with a second through hole for the pull wire 100 to pass through.

[0233] For example, the proximal elastic sleeve is disposed on a portion of the outer wall of the pulling wire 100 , and the proximal elastic sleeve is received in the inner cavity of the end of the proximal fixing portion 521 relative to the opening structure.

[0234] When the proximal elastic sleeve is in the initial state, ie, not matched with the proximal connector 510 , the hole wall of the second through hole is only in simple contact with the pull wire 100 , and the pull wire 100 can move relatively in the second through hole.

[0235] When the proximal connector 510 enters the proximal fixing portion 521 and squeezes the proximal elastic sleeve, the wall of the second through hole of the proximal elastic sleeve contacts the pulling wire 100 under the squeezing of the proximal connector 510 to lock the driving tube 300, and after detaching from the proximal connector 510, the wall of the through hole rebounds to release the pulling wire 100.

[0236] For example, when the proximal fixing portion 521 is fixed to the proximal connecting member 510, the proximal connecting member 510 squeezes the proximal elastic sleeve along a first direction. After being squeezed by the proximal connecting member 510, the proximal elastic sleeve is deformed, i.e. compressed, at least along the first direction, and the hole wall of the second through hole thereof contacts the pulling wire 100, so that the force between the hole wall of the second through hole and the pulling wire 100 increases to lock the pulling wire 100; when the proximal fixing portion 521 is released from the proximal connecting member 510, the proximal elastic sleeve is detached from the proximal connecting member 510, and the proximal elastic sleeve returns to its initial state, so that the force between the hole wall of the second through hole and the pulling wire 100 is reduced, that is, the proximal elastic sleeve releases the pulling wire 100 during the rebound process.

[0237] By configuring the proximal elastic member as a proximal elastic sleeve, the proximal elastic sleeve can contact the entire circumferential surface of the pull wire 100 after being squeezed by the proximal connector 510 , thereby achieving stable locking of the pull wire 100 .

[0238] Exemplarily, the proximal elastic sleeve may include a sleeve body structure with elastic deformation, such as a silicone sleeve, and the embodiment of the present application does not limit the material of the proximal elastic sleeve.

[0239] For example, the proximal elastic sleeve can be an elastic ball so that the outer surface of the elastic ball can be evenly squeezed and deformed by the end wall of the proximal connector 510, so that the inner wall of the second through hole and the pull wire 100 at each circumferential position have the same force, thereby ensuring that the pull wire 100 is evenly stressed without tilting.

[0240] Of course, in some examples, the proximal elastic sleeve may also be a square or irregular sleeve structure, and the embodiment of the present application does not limit the shape of the proximal elastic sleeve.

[0241] The following continues to take the first tissue as the intestine and the target tissue as the gallbladder as an example to illustrate the implantation process of the anchoring device:

[0242] The distal connecting piece 410 of the distal locking structure 400 is fixed on the fixing part 21 at the proximal end of the puncture needle 20, and the distal fixing part 421 is fixed to the distal connecting piece 410, the driving tube 300 is locked in the distal connecting piece 410, and the puncture needle 20 with the anchor 10 at the proximal end moves toward the target tissue until the puncture needle 20 is implanted in place, and then the distal fixing part 421 is released from the distal connecting piece 410, and the driving tube 300 is released from the distal connecting piece 410;

[0243] The proximal fixing portion 521 is fixed to the proximal connecting member 510 to tighten the pull wire 100, and the driving tube 300 is pushed to move into the needle track of the puncture needle 20, so as to push the pull wire 100 and the anchor 200 at the distal end of the pull wire 100 from the proximal end of the puncture needle 20 into the needle track of the puncture needle 20;

[0244] Continue to push the driving tube 300 so that the anchor 200 is advanced toward the distal end of the puncture needle 20 until the anchor 200 extends out of the distal end of the puncture needle 20, for example, the proximal end of the anchor 200 is flush with the distal end of the puncture needle 20, and the proximal end of the anchor 200 abuts against the distal end of the driving tube 300, and the proximal fixing portion 521 is released from the proximal connecting piece 510 to release the pulling wire 100, and then the pulling wire 100 is pulled to flip the anchor 200 to the anchoring angle.

[0245] The puncture needle 20 is withdrawn so that the puncture needle 20 is withdrawn into the clamp channel of the endoscope, and the drive tube 300 is withdrawn into the puncture needle 20; then the distal fixing portion 421 is fixed to the distal connecting member 410 to lock the drive tube 300 at the proximal end of the puncture needle 20, and the puncture needle 20 is withdrawn together with the drive tube 300, leaving the pull wire 100 in the clamp channel;

[0246] The pull wire 100 is pulled, for example, from the proximal end of the pull wire 100 , so that the anchor 200 is first attached to the inner wall of the gallbladder, and then the gallbladder is pulled to the outer wall of the intestine to achieve anchoring of the gallbladder.

[0247] Fig. 9 yes Figure 3 Schematic diagram of the coordination between the mid-proximal locking structure and the limiting member. Figure 3 and Fig. 9 As shown, in some examples, the anchor 10 may further include a stopper 600 .

[0248] The stopper 600 is selectively disposed between the driving tube 300 and the puncture needle 20. In other words, the stopper 600 can be located between the driving tube 300 and the puncture needle 20, or can be separated from the driving tube 300 and the puncture needle 20. For example, the stopper 600 is disposed between the driving tube 300 and the puncture needle 20 in one state, and is separated from the driving tube 300 and the puncture needle 20 in another state.

[0249] When the anchor 200 is located in the puncture needle 20 and has a preset distance from the distal end of the puncture needle 20, the stopper 600 is respectively matched with the driving tube 300 and the puncture needle 20 to limit the movement of the driving tube 300 in the puncture needle 20;

[0250] When the anchor 200 moves from the first position toward the distal end of the puncture needle 20 , the stopper 600 is separated from between the drive tube 300 and the puncture needle 20 ; wherein the first position is the position when the anchor 200 has a preset distance from the distal end of the puncture needle 20 .

[0251] For example, the limiting member 600 may include an elastic buckle and a slot, wherein the elastic buckle is disposed on one of the driving tube 300 and the puncture needle 20 , and the slot is disposed on the other of the driving tube 300 and the puncture needle 20 .

[0252] When the anchor 200 is located in the puncture needle 20 and has a preset distance from the distal end of the puncture needle 20, the elastic buckle is snapped into the slot to limit the movement of the driving tube 300 in the puncture needle 20;

[0253] When the anchor 200 moves from the first position to the distal end of the puncture needle 20 , the elastic buckle is disengaged from the slot, and the driving tube 300 can continue to move along the puncture needle 20 .

[0254] For example, the preset distance may be 0, that is, the distal end of the anchor 200 is flush with the distal end of the puncture needle 20; the preset distance may also be any value less than or equal to 10 mm, for example, the preset distance may be a suitable value such as 2 mm, 4 mm, 7 mm or 10 mm. Of course, the preset distance is only used to express the distance closer to the distal end of the puncture needle 20, and the present application embodiment does not limit the preset distance.

[0255] By setting a limiter 600 between the driving tube 300 and the puncture needle 20, when the anchor 200 moves along the needle path of the puncture needle 20 to a preset distance from the distal end of the puncture needle 20, the driving tube 300 can be stopped to prompt the operator that the anchor 200 is about to reach the distal end of the puncture needle 20 or has reached the distal end of the puncture needle 20, and then the advancement speed of the driving tube 300 can be controlled to make the anchor 200 slowly approach the distal end of the puncture needle 20 or slowly extend out of the distal end of the puncture needle 20, thereby ensuring that when the proximal end of the anchor 200 approaches the distal end of the puncture needle 20 or reaches the distal end of the puncture needle 20, the pulling wire 100 can be pulled back in time to make the anchor 200 flip over in time, and avoid the anchor 200 extending too far from the distal end of the puncture needle 20, which affects the flipping of the anchor 200 or causes damage to the target tissue.

[0256] In addition, when the stopper 600 does not lock the driving tube 300 on the puncture needle 20 , that is, before the anchor 200 reaches the first position, the advancement speed of the driving tube 300 can be accelerated to improve the implantation efficiency of the anchor 10 .

[0257] In specific configuration, the stopper 600 can be disposed at any position along the length direction of the driving tube 300. For example, the stopper 600 is disposed between the proximal end of the driving tube 300 and the proximal end of the puncture needle 20, and selectively protrudes from the side wall of the driving tube 300.

[0258] At least when the anchor 200 is located in the puncture needle 20 and has a preset distance from the distal end of the puncture needle 20, the stopper 600 protrudes from the side wall of the driving tube 300, so that the proximal end of the driving tube 300 is blocked by the stopper 600 and disposed on the proximal side of the puncture needle 20. For example, when the anchor 200 is located in the puncture needle 20 and has a preset distance from the distal end of the puncture needle 20, the stopper 600 protrudes from the side wall of the driving tube 300; or, when the distance between the anchor 200 and the distal end of the puncture needle 20 is greater than the preset distance, the stopper 600 protrudes from the side wall of the driving tube 300, that is, before the anchor 200 moves from the proximal end of the puncture needle 20 to the first position, the stopper 600 may always protrude from the side wall of the driving tube 300.

[0259] Exemplarily, the limit member 600 is arranged between the proximal locking structure 500 and the distal locking structure 400, and when the limit member 600 protrudes from the side wall of the driving tube 300, when the limit member 600 moves to one end of the distal locking structure 400 with the driving tube 300, the limit member 600 can be blocked on one side of the distal locking structure 400 (i.e., the side facing the proximal locking structure 500).

[0260] It can be understood that, when set, the outer diameter of the driving tube 300 can be adapted to the first through hole 423 of the distal locking structure 400. When a limiting member 600 protrudes from the side wall of the driving tube 300, the radial distance between the outer end of the limiting member 600 and the driving tube 300 is greater than the radius of the first through hole 423, so that the limiting member 600 is blocked on one side of the distal locking structure 400, that is, the proximal end of the driving tube 300 is blocked on the proximal side of the puncture needle 20 to prevent the driving tube 300 from continuing to advance along the puncture needle 20.

[0261] In addition, during the movement of the anchor 200 from the first position toward the distal end of the puncture needle 20, the limit member 600 is detached from the side wall of the driving tube 300. In other words, when the limit member 600 reaches one side of the distal locking structure 400, there is a preset distance between the distal end of the anchor 200 and the distal end of the puncture needle 20. Then, the limit member 600 is detached from the side wall of the driving tube 300, so that the driving tube 300 continues to slowly advance into the puncture needle 20, so that the anchor 200 extends out of the distal end of the puncture needle 20 and flips over.

[0262] In some examples, the stopper 600 may be an elastic protrusion that may extend out of the side wall of the driving tube 300 or retract into the driving tube 300. For example, a receiving groove may be formed on the driving tube 300, and the distal end of the elastic protrusion may be fixed in the receiving groove. In a natural state, the elastic protrusion protrudes out of the receiving groove, and when the elastic protrusion is squeezed laterally or vertically, it may retract into the receiving groove.

[0263] For example, when the anchor 200 is located in the puncture needle 20 and reaches the first position and before the first position, the elastic protrusion protrudes from the side wall of the driving tube 300, so that when the anchor 200 reaches the first position, the elastic protrusion is blocked on one side of the distal locking structure 400, and then the driving tube 300 continues to be pushed into the puncture needle 20. The elastic protrusion retracts into the storage groove under the pressure of the inner wall of the distal locking structure 400, so that the driving tube 300 is smoothly pushed into the puncture needle 20.

[0264] In other examples, the stopper 600 can be detachably disposed on the driving tube 300. When the anchor 200 moves from the first position to the distal end of the puncture needle 20, the stopper 600 is configured to be detached from the driving tube 300. In this way, the assembly process between the stopper 600 and the driving tube 300 can be simplified, making the process control of the stopper 600 being separated from the side wall of the driving tube 300 more convenient and quick. In addition, the integrity of the structure of the driving tube 300 itself does not need to be destroyed, so that the strength of the driving tube 300 is not affected.

[0265] Exemplarily, the limit member 600 can be a limit splint, which is clamped on the driving tube 300. When the anchor 200 reaches the first position and continues to move toward the distal end of the puncture needle 20, the limit splint can be removed from the driving tube 300, so that the driving tube 300 continues to advance along the puncture needle 20.

[0266] In some examples, the stopper 600 can be disposed at one end of the proximal locking structure 500 of the anchor 10 toward the distal locking structure 400. In this example, the preset distance is 0, that is, when the anchor 200 is in the first position, its distal end is just flush with the distal end of the puncture needle 20. The length of the stopper 600 is equal to the maximum length of the anchor 200 extending from the distal end of the puncture needle 20.

[0267] In this way, when the stopper 600 arrives at one end of the distal locking structure 400 toward the proximal locking structure 500 along with the driving tube 300, the proximal locking structure 500 and the distal locking structure 400 are just separated by the stopper 600, and at this time, the distal end of the anchor 200 is flush with the distal end of the puncture needle 20. After the stopper 600 is removed, the driving tube 300 continues to advance toward the puncture needle 20 until the proximal locking structure 500 moves to one end of the distal locking structure 400, and the movement distance of the driving tube 300 is the length of the stopper 600, and the movement distance of the anchor 200 is also the length of the stopper 600, so that the length of the anchor 200 extending from the distal end of the puncture needle 20 is the length of the stopper 600.

[0268] By setting the limiter 600 at one end of the proximal locking structure 500 toward the distal locking structure 400, the operator can intuitively determine the maximum length of the anchor 200 extending out of the distal end of the puncture needle 20 based on the length of the limiter 600, thereby providing a reliable basis for the subsequent pullback distance of the pulling line 100.

[0269] Exemplarily, the length of the limit member 600 can be equal to the length of the anchor 200, so that when the proximal locking structure 500 moves to the end of the distal locking structure 400, the proximal end of the anchor 200 is just flush with the distal end of the puncture needle 20, that is, the length of the anchor 200 extending out of the distal end of the puncture needle 20 is equal to the entire length of the anchor 200. In this way, the proximal locking structure 500 can be moved to the end of the distal locking structure 400, and the proximal fixing portion 521 can be released from the proximal connecting member 510 to release the pull wire 100, and then the pull wire 100 is pulled back to cause the anchor 200 to flip over.

[0270] Fig.10 is a schematic diagram of the structure of one of the anchors provided in one embodiment of the present application. Fig.11 yes Fig.10 The assembly cross-sectional view of the anchor and the pull line in Fig.12 yes Fig.11 Cross-sectional view of the middle anchor, Fig.13 yes Figure 6 A partial enlarged view of the C in the middle. Figures 10 to 13 As shown, in some examples, a limiting groove 210 and a side notch 210b connected to the limiting groove 210 may be formed on the anchor 200. The limiting groove 210 and the side notch 210b both extend along the length direction of the anchor 200, and one end of the limiting groove 210 and the side notch 210b both pass through the proximal end of the anchor 200. The length direction of the anchor 200 can be referred to as Figures 10 to 13 As shown in the direction b.

[0271] It can be understood that the side notch 210b can be an opening of the limiting groove 210 on the side wall of the anchor 200. For the convenience of description, the two opposite ends of the limiting groove 210 along the length direction can be respectively referred to as the first end and the second end, wherein the end passing through the proximal end of the anchor 200 is referred to as the first end, and the end facing away from the proximal end of the anchor 200 is referred to as the second end.

[0272] The first end of the limiting groove 210 penetrates to the proximal end of the anchor 200, which means that the first end of the limiting groove 210 is formed with an end notch, and the end notch is communicated with the side notch 210b and has a different direction.

[0273] When the proximal end of the anchor 200 is located at the puncture needle 20, at least a portion of the pull wire 100 is located in the limiting groove 210, and extends out of the anchor 200 from the end notch of the limiting groove 210 and extends into the driving tube 300. When the pull wire 100 pulls the anchor 200 to flip, a portion of the pull wire 100 is separated from the anchor 200 from the side notch 210b.

[0274] Exemplarily, when the pull wire 100 is fixed, it can be fixed at any position in the limiting groove 210 , or it can be fixed at a position in the anchor 200 other than the limiting groove 210 , as long as part of the pull wire 100 is ensured to be received in the limiting groove 210 .

[0275] In the embodiment of the present application, a limiting groove 210 is provided on the anchor 200 to limit the pull wire 100 in the radial direction of the anchor 200, so that when the anchor 200 is in the puncture needle 20, the pull wire 100 is located in the anchor 200, which plays a good storage role for the pull wire 100 and avoids the pull wire 100 rubbing against the puncture needle 20 and accumulating.

[0276] In some other examples, a mounting hole perpendicular to the length direction may be formed in the anchor 200, so that the distal end of the puller wire 100 is fixed in the anchor 200 and extends outside the anchor 200 through the mounting hole. When the proximal end of the anchor 200 is located at the puncture needle 20, the puller wire 100 extends into the driving tube 300 along the outer side wall of the anchor 200.

[0277] Reference Figures 10 to 13As shown, in order to achieve better flipping of the anchor 200, in some examples, a relief opening 240 is formed at one end (i.e., the first end) of the limiting groove 210 located at the proximal end of the anchor 200, and one end 240a of the relief opening 240 extends to the side notch 210b, and the other end 240b of the relief opening 240 extends to the side of the axis l of the limiting groove 210 that is away from the side notch 210b. It should be noted that the axis of the limiting groove 210 is consistent with the axis of the anchor 200, that is, the limiting groove 210 and the anchor 200 are coaxially arranged.

[0278] For the convenience of description, the portion of the limiting groove 210 having the avoidance opening 240 in the length direction may be referred to as the first portion, and the other portion of the limiting groove 210 in the length direction may be referred to as the second portion. The angle at which the second portion of the groove wall of the limiting groove 210 extends circumferentially around the axis 1 is the second angle, and the angle at which the first portion of the groove wall extends circumferentially around the axis 1 is the first angle.

[0279] The first angle and the second angle are both less than 360°, so that a side notch 210b is formed on the side wall of the anchor 200, that is, the limiting groove 210 is not closed in the circumferential direction. The first angle is smaller than the second angle, so that the first end of the limiting groove 210 forms an avoidance opening 240.

[0280] In some examples, the first angle can be reduced in the direction from the second part of the limiting groove 210 to the proximal end of the anchor 200, and the slope of the reduction is equal, so that the end surface of the avoidance opening 240 communicating with the side wall notch is formed into an inclined plane. Of course, in other examples, when the slope of the first angle in the direction from the second part of the limiting groove 210 to the proximal end of the anchor 200 is different, for example, the reduction slope gradually increases, so that the end surface of the avoidance opening 240 communicating with the side wall notch is formed into an arc surface.

[0281] In some examples, the first angle is constant in the direction from the second portion of the limiting groove 210 to the proximal end of the anchor 200, and the end surface of the avoidance opening 240 communicating with the side wall notch is a vertical surface perpendicular to the side notch, and the avoidance opening 240 has a horizontal surface perpendicular to the vertical surface, that is, the entire end surface of the avoidance opening 240 is a right-angle surface. The embodiment of the present application does not limit the shape of the end surface of the avoidance opening 240.

[0282] In addition, the other end of the avoidance opening 240 extends to the side of the axis l of the limiting groove 210 that is away from the side groove 210b, that is, the first angle of the end of the first part of the limiting groove 210 located at the proximal end of the anchor 200 is less than 180°, that is, the end groove wall of the first part of the limiting groove 210 located at the proximal end of the anchor 200 extends circumferentially around the axis l to a plane lower than the axis l, that is, the other end of the avoidance opening 240 has a first distance from the axis l of the limiting groove 210 in the radial direction of the anchor 200 (refer to Fig.13It can be understood that the plane where the axis l is located is arranged opposite to the groove bottom 210a.

[0283] By forming an avoidance opening 240 at the first end of the limiting groove 210, and extending one end of the avoidance opening 240 to the side groove 210b, and the other end extending to the side of the axis l of the limiting groove 210 facing away from the side groove 210b, the other end surfaces of the proximal end of the anchor 200 except the avoidance opening 240 are abutted against the distal end of the driving tube 300, and the end of the avoidance opening 240 away from the side groove 210b serves as the turning fulcrum P of the anchor 200.

[0284] When the proximal end of the anchor 200 reaches or is about to reach the distal end of the puncture needle 20, the pulling wire 100 is pulled, so that the flipping fulcrum P is subjected to the resistance force of the distal end of the driving tube 300. Because the flipping fulcrum P has a first distance from the axis l of the limiting groove 210, after the anchor 200 is pulled by the pulling wire 100, the flipping fulcrum P is resisted by the distal end of the driving tube 300, thereby forming a flipping torque, so that the anchor 200 can achieve better flipping.

[0285] In some examples, there is a gap between the other end of the avoidance opening 240 (i.e., the flipping fulcrum P) and the bottom 210a of the limiting groove 210. In other words, the other end of the avoidance opening 240 does not extend to the bottom 210a of the limiting groove 210, so that the proximal end of the anchor 200 reserves a portion of the end surface perpendicular to the axis l, so that the distal end of the driving tube 300 can stably abut against the end notch side of the limiting groove 210 without entering into the limiting groove 210, or shaking on the end notch side of the limiting groove 210, so that the driving tube 300 can push the anchor 200 to move stably along the puncture needle 20, and the driving tube 300 can stably abut against the flipping fulcrum P, and pull the anchor 200 to flip stably under the pull of the pulling wire 100.

[0286] The groove bottom 210a of the limiting groove 210 is arranged opposite to the side groove opening 210b.

[0287] Exemplarily, the distance between the other end of the avoidance opening 240 and the bottom 210a of the limiting groove 210 can be less than or equal to 5 mm. For example, the distance can be a suitable value such as 1 mm, 3 mm or 5 mm. The embodiment of the present application does not limit the distance.

[0288] In some examples, when the proximal end of the anchor 200 is located at the puncture needle 20, the pull wire 100 can extend along the axis l of the limiting groove 210, so that the pull wire 100 pulls the anchor 200 along the axis l of the limiting groove 210, so that the anchor 200 is flipped.

[0289] In some other examples, when the proximal end of the anchor 200 is located at the puncture needle 20 , the puller wire 100 may be located between the axis 1 of the limiting groove 210 and the side notch 210 b.

[0290] For the convenience of description, the side of the limit groove 210 located on the axis l toward the side groove 210b can be called the first side, and the side of the limit groove 210 located on the axis l toward the flip fulcrum P (or the groove bottom 210a) can be called the second side. The pulling wire 100 is set on the first side of the limit groove 210 to deviate from the second side, that is, deviate from the flip fulcrum P side. In this way, the pulling wire 100 pulls the anchor 200 along the side away from the flip fulcrum P, which can increase the flipping torque of the anchor 200, so that the anchor 200 can achieve better flipping under the pulling of the pulling wire 100 and the resistance of the driving tube 300.

[0291] In some examples, the distal end of the pull wire 100 can be fixed at any position of the limiting groove 210 , for example, can be fixed inside the second end of a single limiting groove 210 .

[0292] Reference Fig.10 As shown, in some other examples, a release cavity 220 may be formed on the anchor 200;

[0293] The wire release cavity 220 is connected to the groove cavity of the limiting groove 210 through the through hole 210 c , the distal end of the pull wire 100 is restricted in the wire release cavity 220 , and the pull wire 100 extends from the through hole 210 c into the limiting groove 210 .

[0294] Exemplarily, the wire release cavity 220 and the limiting groove 210 may be spaced apart along the length direction of the anchor 200 , so that the portion of the puller wire 100 located in the anchor 200 extends along the length direction of the anchor 200 .

[0295] The through hole 210c is located in the anchor 200 and extends along the length direction of the anchor 200. The provision of the through hole 210c can better limit the specific radial position of the pull wire 100 on the anchor 200 and simplify the matching structure of the anchor 200 and the pull wire 100. For example, the through hole 210c can be set on the axis l of the limiting groove 210, that is, the axis l of the through hole 210c coincides with the axis l of the limiting groove 210. In this way, when the distal end of the pull wire 100 is fixed in the wire release cavity 220 and the pull wire 100 enters the limiting groove 210 along the through hole 210c, the pull wire 100 can extend along the axis l of the limiting groove 210. Similarly, when the through hole 210c is set on the extension area of ​​the first side of the limiting groove 210, the pull wire 100 is limited to the extension area of ​​the first side of the limiting groove 210.

[0296] In some examples, the distal end of the puller wire 100 may be fixed in the wire release cavity 220 by bonding or welding.

[0297] In some other examples, a first limiting portion 110 is formed at the distal end of the pull wire 100 , and the first limiting portion 110 is clamped in the wire release cavity 220 to restrict the distal end of the pull wire 100 in the wire release cavity 220 .

[0298] It can be understood that the width dimension of the first limiting portion 110 is greater than the opening width dimension of the wire release cavity 220, so that the first limiting portion 110 is stuck in the wire release cavity 220, so that the distal end of the puller wire 100 is limited in the wire release cavity 220 and will not escape from the notch of the wire release cavity 220. In addition, the outer contour dimension of the first limiting portion 110 is greater than the first opening of the through hole 210c, so that the first limiting portion 110 will not enter the limiting groove 210 from the through hole 210c, ensuring that the first limiting portion 110, i.e. the distal end of the puller wire 100, is limited in the wire release cavity 220.

[0299] In some examples, the first limiting portion 110 may be movable in the wire-releasing cavity 220 , or may be fixed in the wire-releasing cavity 220 , which is not limited in the embodiments of the present application.

[0300] Exemplarily, the first stopper 110 can be an integral part with the distal end of the puller wire 100, for example, the first stopper 110 can be a knot at the distal end of the puller wire 100. In some examples, the first stopper 110 can also be a block or spherical stopper structure fixed at the distal end of the puller wire 100.

[0301] In some examples, when the anchor 200 is flipped to the anchoring position, the position where the pull wire 100 is detached from the anchor 200 is located at the center of the anchor 200 along the length direction.

[0302] It is understandable that when the anchor 200 is flipped to the anchoring position, a portion of the pull line 100 is located inside the anchor 200, and another portion is detached from the anchor 200, that is, another portion is located outside the anchor 200, and the pull line 100 is detached from the anchor 200 (refer to Figure 7 24 (shown in FIG. 25 ) refers to the position on the anchor 200 corresponding to the turning point between the portion of the pull wire 100 located inside the anchor 200 and the portion located outside the anchor 200.

[0303] By setting the position where the pull wire 100 detaches from the anchor 200 at the center position of the anchor 200 along the length direction, the anchor 200 will not deviate from the anchoring position during the pulling process of the pull wire 100, that is, the angle between the anchor 200 and the pull wire 100 will not deviate from the anchoring angle, ensuring that the anchor 200 can stably fit against the inner wall of the target tissue 40 during the pulling process of the pull wire 100 without causing damage to the target tissue 40.

[0304] It can be understood that when the anchor 200 is flipped to the anchoring position, the position where the pull line 100 detaches from the anchor 200 is the second end of the limiting groove 210. Therefore, the second end of the limiting groove 210 can be extended to the center of the anchor 200 so that the position where the pull line 100 detaches from the anchor 200 is the center of the anchor 200.

[0305] In some examples, the distal end of the pull wire 100 may be directly fixed to the center of the anchor 200 , for example, may be fixed to the second end of the limiting groove 210 .

[0306] In some other examples, the distal end of the puller wire 100 may be located between the center of the anchor 200 and the distal end of the anchor 200. For example, the distal end of the puller wire 100 is confined within the wire release cavity 220. Since the wire release cavity 220 is located on the side of the limiting groove 210 facing the distal end of the anchor 200, for example, the wire release cavity 220 is located between the center of the anchor 200 and the distal end of the anchor 200, the distal end of the puller wire 100 deviates from the center of the anchor 200, for example, it may be located between the center of the anchor 200 and the distal end of the anchor 200, and the puller wire 100 extends toward the proximal end of the anchor 200.

[0307] Reference Fig.11 To Tuhe Fig.12 As shown, in some examples, a mounting channel 260 is formed on the anchor 200, one end of the mounting channel 260 is connected to the through hole 210c, and the other end of the mounting channel 260 passes through to the distal end of the anchor 200. For example, the mounting channel 260 is located on the side of the limiting groove 210 facing the distal end of the anchor 200, and the through hole 210c is located between the mounting channel 260 and the limiting groove 210, and connects the mounting channel 260 and the limiting groove 210.

[0308] In some examples, the distal end of the anchor 200 has an end cap 250, which is embedded in the mounting channel 260 from the distal end of the anchor 200, and one end of the end cap 250 is spaced apart from the through hole 210c, and a wire release cavity 220 is formed between one end of the end cap 250 and the through hole 210c.

[0309] For example, the through hole 210c has a first opening and a second opening that are relatively arranged along the length direction of the anchor 200, wherein the first opening faces the limiting groove 210 and is connected to the limiting groove 210, and the end face where the second opening is located is spaced apart from one end of the end cap 250, and the end face where the second opening is located and one end of the end cap 250 form a wire release cavity 220.

[0310] By providing a mounting channel 260 on the anchor 200 and extending the mounting channel 260 to the distal end of the anchor 200 and providing an end cap 250 at the distal end of the anchor 200 to form a wire release cavity 220, the structural setting of the anchor 200 is simplified, and the distal end of the puller wire 100 is easily assembled in the wire release cavity 220.

[0311] Fig.14 Schematic diagram of another anchor structure provided by an embodiment of the present application. Fig.14 As shown, in some other examples, the side wall of the anchor 200 is recessed inwardly to form a wire release groove 220 a , and the groove cavity of the wire release groove 220 a is configured as a wire release cavity 220 .

[0312] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. An anchor, characterized in that: include: A pulling wire, wherein the pulling wire is a flexible member; an anchor connected to the distal end of the pull wire and capable of being pulled by the pull wire; The drive tube is at least partially sleeved on at least a portion of the pull wire; the anchor is configured to move along the puncture needle under the drive of the drive tube, and can be flipped when extending out of the distal end of the puncture needle to form an angle with the pull wire so that the anchor stops at the inner wall of the target tissue.

2. The anchor according to claim 1, characterized in that: The driving tube is sleeved on the pulling wire, and the anchor is located at the distal end side of the driving tube; When the anchor is located in the puncture needle, the proximal end of the anchor abuts against the distal end of the drive tube, so that when the anchor extends out of the puncture needle, the anchor can be turned over under the abutment of the drive tube and the pulling of the pull wire.

3. The anchor according to claim 2, characterized in that: The anchor also includes: The distal locking structure is configured to be fixed to the proximal end of the puncture needle. A first receiving channel is formed in the distal locking structure. The first receiving channel is connected to the needle track of the puncture needle. Part of the drive tube and the anchor are located in the first receiving channel. The anchor is configured to enter the needle track of the puncture needle through the first receiving channel under the drive of the drive tube.

4. The anchor according to claim 3, characterized in that: The distal locking structure is configured to selectively cooperate with the drive tube to lock the drive tube and the anchor in the first receiving channel.

5. The anchor according to claim 4, characterized in that: The distal locking structure comprises: a distal connector, configured to be fixed to the proximal end of the puncture needle and formed with at least a portion of the first receiving channel for the driving tube and the anchor to pass through; The distal locking member is disposed on the distal connecting member and is configured to selectively cooperate with the driving tube to lock or release the driving tube and the anchor on the distal connecting member.

6. The anchor according to claim 5, characterized in that: The distal locking member comprises: A distal fixing portion, formed with the first receiving channel, and capable of being selectively fixed to or released from the distal connecting member; A distal locking portion, located inside the distal fixing portion; When the distal fixing portion is fixed to the distal connecting member, the distal locking portion is configured to cooperate with the distal connecting member and act on the driving tube to lock the driving tube and the anchor; When the distal fixing portion is released from the distal connecting piece, the distal locking portion is configured to be disengaged from the distal connecting piece to release the driving tube and the anchor.

7. The anchor according to claim 6, characterized in that: The distal locking portion is a distal elastic member embedded in the distal fixing portion, and the distal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the driving tube; When the distal fixing portion is fixed to the distal connecting member, the distal elastic member is squeezed by the distal connecting member and contacts the driving tube along the first direction to lock the driving tube and the anchor; When the distal fixing portion is released from the distal connecting member, the distal elastic member is disengaged from the distal connecting member to release the driving tube and the anchor during the rebound process.

8. The anchor according to claim 7, characterized in that: The distal elastic member is a distal elastic sleeve; The distal elastic sleeve is formed with a first through hole for the driving tube to pass through; When the distal elastic sleeve is squeezed by the distal connector, the hole wall of the first through hole contacts the drive tube to lock the drive tube and the anchor, and after being detached from the distal connector, the hole wall of the first through hole rebounds to release the drive tube and the anchor.

9. The anchor according to claim 7, characterized in that: The distal fixing portion is a distal locking nut, and the distal locking nut is threadedly connected to the distal connecting piece.

10. The anchor according to claim 1, characterized in that: The anchor also includes: A proximal locking structure, disposed at the proximal end of the drive tube and fixedly connected to the drive tube; A second receiving channel is formed in the proximal locking structure, and the pulling wire is passed through the second receiving channel; The proximal locking structure is configured to selectively cooperate with the puller wire to lock the puller wire on the drive tube.

11. The anchor according to claim 10, characterized in that: The proximal locking structure comprises: A proximal connecting piece, fixed to the proximal end of the driving tube and forming at least a portion of the second receiving channel for the pulling wire to pass through; The proximal locking member is disposed on the proximal connecting member and is configured to selectively cooperate with the pull wire to lock or release the pull wire on the proximal connecting member.

12. The anchor according to claim 11, characterized in that: The proximal locking member comprises: A proximal fixing portion, formed with the second receiving channel, and capable of being selectively fixed to or released from the proximal connecting member; A proximal locking portion, located inside the proximal fixing portion; When the proximal fixing portion is fixed to the proximal connecting member, the proximal locking portion is configured to cooperate with the proximal connecting member and act on the pull wire to lock the pull wire; When the proximal fixing portion is released from the proximal connecting piece, the proximal locking portion is configured to be disengaged from the proximal connecting piece to release the pulling wire.

13. The anchor according to claim 12, characterized in that: The proximal locking portion is a proximal elastic member embedded in the proximal fixing portion, and the proximal elastic member is elastic at least along a first direction; the first direction intersects with the extension direction of the pulling wire; When the proximal fixing portion is fixed to the proximal connecting member, the proximal elastic member is pressed by the proximal connecting member and contacts the pulling wire along the first direction to lock the pulling wire; When the proximal fixing portion is released from the proximal connecting member, the proximal elastic member is separated from the proximal connecting member to release the pulling wire during the rebound process.

14. The anchor according to claim 13, characterized in that: The proximal elastic member is a proximal elastic sleeve; The proximal elastic sleeve is formed with a second through hole for the pulling wire to pass through; Under the compression of the proximal connector, the hole wall of the second through hole of the proximal elastic sleeve contacts the pulling wire to lock the driving tube, and after detaching from the proximal connector, the hole wall of the through hole rebounds to release the pulling wire.

15. The anchor according to claim 13, characterized in that: The proximal fixing portion is a proximal locking nut, and the proximal locking nut is threadedly connected to the proximal connecting piece.

16. The anchor according to any one of claims 1 to 15, characterized in that: The anchor also includes: A stopper, selectively disposed between the driving tube and the puncture needle; When the anchor is located in the puncture needle and has a preset distance from the distal end of the puncture needle, the limiting member is respectively matched with the driving tube and the puncture needle to limit the movement of the driving tube in the puncture needle; During the movement of the anchor from the first position toward the distal end of the puncture needle, the limiter is disengaged from between the drive tube and the puncture needle; wherein the first position is the position of the anchor at a preset distance from the distal end of the puncture needle.

17. The anchor according to claim 16, characterized in that: The stopper is disposed between the proximal locking structure and the distal locking structure of the anchor, and selectively protrudes from the side wall of the driving tube; At least when the anchor is located in the puncture needle and has a preset distance from the distal end of the puncture needle, the stopper protrudes from the side wall of the driving tube so that the proximal end of the driving tube is blocked by the stopper at the proximal end side of the puncture needle; During the movement of the anchor from the first position toward the distal end of the puncture needle, the stopper is separated from the side wall of the driving tube.

18. The anchor according to claim 17, characterized in that The limiting member is detachably arranged on the driving tube; When the anchor moves from the first position toward the distal end of the puncture needle, the stopper is configured to be detached from the drive tube.

19. The anchor according to claim 17, characterized in that: The stopper is arranged at one end of the proximal locking structure of the anchor toward the distal locking structure; The preset distance is 0, and the length of the limiting member is equal to the maximum length of the anchor extending out of the distal end of the puncture needle.

20. The anchor according to any one of claims 1 to 15, characterized in that: A limiting groove and a side notch connected to the limiting groove are formed on the anchor, the limiting groove and the side notch both extend along the length direction of the anchor, and one end of the limiting groove and the side notch both pass through the proximal end of the anchor; When the proximal end of the anchor is located at the puncture needle, at least a portion of the pull wire is located in the limiting groove, and when the pull wire pulls the anchor to flip, a portion of the pull wire is separated from the anchor from the side notch.

21. The anchor according to claim 20, characterized in that An escape opening is formed at one end of the limiting groove located at the proximal end of the anchor, one end of the escape opening extends to the side notch, and the other end of the escape opening extends to a side of the axis of the limiting groove facing away from the side notch.

22. The anchor according to claim 21, characterized in that There is a distance between the other end of the avoidance opening and the bottom of the limiting groove; Wherein, the groove bottom of the limiting groove is arranged opposite to the side groove opening.

23. The anchor according to claim 21, characterized in that When the proximal end of the anchor is located at the puncture needle, the pulling wire extends along the axis of the limiting groove; or, When the proximal end of the anchor is located at the puncture needle, the pulling wire is located between the axis of the limiting groove and the side notch.

24. The anchor according to claim 20, characterized in that A line-releasing cavity is formed on the anchor; The wire-releasing cavity is communicated with the groove cavity of the limiting groove through a through hole, the distal end of the pulling wire is restricted in the wire-releasing cavity, and the pulling wire extends from the through hole into the limiting groove.

25. The anchor according to claim 24, characterized in that A first limiting portion is formed at the distal end of the pull wire, and the first limiting portion is embedded in the wire-releasing cavity so that the distal end of the pull wire is restricted in the wire-releasing cavity.

26. The anchor according to claim 24, characterized in that A wire-releasing groove is recessed inwardly on the side wall of the anchor, and the groove cavity of the wire-releasing groove is configured as the wire-releasing cavity.

27. The anchor according to claim 24, characterized in that A mounting channel is formed in the anchor, one end of the mounting channel is communicated with the through hole, and the other end of the mounting channel penetrates to the distal end of the anchor; The distal end of the anchor has an end cap, the end cap is embedded in the installation channel from the distal end of the anchor, and one end of the end cap is spaced apart from the through hole; The wire release cavity is formed between one end of the end cap and the through hole.

28. An anchoring device, characterized in that: include: a puncture needle, the distal end of which is configured to extend into the interior of the target tissue; An anchor as described in any one of claims 1 to 27; The anchor of the anchor moves along the puncture needle under the drive of the driving tube to enter into the target tissue.

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