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

[0001] This application is a divisional application. The original application has the application number 2024209493060 and the original application date is April 30, 2024. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of medical device technology, and in particular relates to an anchor and an anchoring device. Background Technology

[0003] Endoscopic ultrasound (EUS) is a minimally invasive surgical procedure used to assess diseases of the digestive tract and lungs. It involves medical procedures on the patient's gastrointestinal tract, such as endoscopic ultrasound-guided gallbladder drainage, in which a fixator is implanted between the gallbladder and the intestine. This fixator acts as a fistula to connect the gallbladder and the intestine.

[0004] To quickly install the fixation device, an anchor is typically implanted into the gallbladder via the intestine under endoscopic guidance. By pulling the anchor's traction wire outward, the anchor pulls the gallbladder tightly against the intestinal wall. However, how to more smoothly implant the anchor into the target tissue, such as the gallbladder, is a problem that urgently needs to be solved. Utility Model Content

[0005] This application provides an anchor and an anchoring device that enables the anchor of the anchor to be successfully implanted into the target tissue.

[0006] On one hand, embodiments of this application provide an anchor, including:

[0007] The tension wire is a flexible component.

[0008] An anchor is attached to the far end of a pull line and can be pulled by the pull line.

[0009] The drive tube is at least partially sleeved on at least a portion of the pull wire;

[0010] The anchor is configured to move along the puncture needle under the drive of the drive tube and to flip when it extends to the distal end of the puncture needle so as to form an angle with the traction line so that the anchor stops against the inner wall of the target tissue.

[0011] In one embodiment, the drive tube is sleeved on the tension line and anchored at the distal end of the drive tube.

[0012] When the anchor is inside 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 flipped under the pressure of the drive tube and the pull of the traction line.

[0013] In one embodiment, the anchor further includes a distal locking structure configured to fix to the proximal end of the puncture needle. A first receiving channel is formed within the distal locking structure, which communicates with the needle track of the puncture needle. A portion of the drive tube and the anchor are located within 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.

[0014] In one embodiment, the remote locking structure is configured to selectively engage with the drive tube to lock the drive tube and anchor within the first receiving channel.

[0015] In one embodiment, the remote locking structure includes:

[0016] The distal connector is configured to be fixed to the proximal end of the puncture needle and forms at least a partial first reception channel for the drive tube and anchor to pass through;

[0017] A remote locking element, disposed on the remote connector, is configured to selectively engage with the drive tube to lock or release the drive tube and anchor onto the remote connector.

[0018] In one embodiment, the remote locking member includes:

[0019] The distal fixing part has a first storage channel and can be selectively fixed or released from the distal connector;

[0020] The distal locking part is located within the distal fixing part;

[0021] When the distal fixing part is fixed to the distal connector, the distal locking part is configured to cooperate with the distal connector and act on the drive tube to lock the drive tube and the anchor.

[0022] When the distal fixing part is released from the distal connector, the distal locking part is configured to disengage from the distal connector to release the drive tube and the anchor.

[0023] 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 the extension direction of the drive tube;

[0024] When the distal fixing part is fixed to the distal connector, the distal elastic element is squeezed by the distal connector and abuts against the drive tube in the first direction to lock the drive tube and the anchor.

[0025] When the distal fixing part is released from the distal connector, the distal elastic element disengages from the distal connector to release the drive tube and anchor during the rebound process.

[0026] In one embodiment, the distal elastic element is a distal elastic sleeve;

[0027] The distal elastic sleeve has a first through hole for the drive tube to pass through;

[0028] Under the compression of the distal elastic sleeve by the distal connector, the wall of the first through hole abuts against the drive tube to lock the drive tube and the anchor. After disengaging from the distal connector, the wall of the first through hole rebounds to release the drive tube and the anchor.

[0029] In one embodiment, the distal fixing part is a distal locking nut, which is threadedly connected to the distal connector.

[0030] In one embodiment, the anchor further includes:

[0031] A proximal locking structure is located at the proximal end of the drive tube and is fixedly connected to the drive tube.

[0032] A second storage channel is formed within the proximal locking structure, and the pull line passes through the second storage channel;

[0033] The proximal locking structure is configured to selectively engage with the pull wire to lock the pull wire onto the drive tube.

[0034] In one embodiment, the proximal locking structure includes:

[0035] The proximal connector is fixed to the proximal end of the drive tube and forms at least a partial second receiving channel for the pull wire to pass through;

[0036] A proximal locking element is disposed on the proximal connector and configured to selectively engage with the pull line to lock or release the pull line on the proximal connector.

[0037] In one embodiment, the proximal locking member includes:

[0038] The proximal fixing part has a second storage channel and can be selectively fixed or released from the proximal connector;

[0039] The proximal locking part is located within the proximal fixing part;

[0040] When the proximal fixing part is fixed to the proximal connector, the proximal locking part is configured to cooperate with the proximal connector and act on the pull line to lock the pull line;

[0041] When the proximal fixing part is released from the proximal connector, the proximal locking part is configured to disengage from the proximal connector to release the pull line.

[0042] 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 the extension direction of the pull line;

[0043] When the proximal fixing part is fixed to the proximal connector, the proximal elastic element is squeezed by the proximal connector and abuts against the pull line in the first direction to lock the pull line.

[0044] When the proximal fixation part is released from the proximal connector, the proximal elastic element disengages from the proximal connector to release the tension line during the rebound process.

[0045] In one embodiment, the proximal elastic element is a proximal elastic sleeve;

[0046] The proximal elastic sleeve has a second through hole for the pull wire to pass through;

[0047] Under the compression of the proximal end elastic sleeve by the proximal end connector, the wall of the second through hole abuts against the pull wire to lock the drive tube, and after disengaging from the proximal end connector, the wall of the through hole springs back to release the pull wire.

[0048] In one embodiment, the proximal fixing part is a proximal locking nut, which is threadedly connected to the proximal connector.

[0049] In one embodiment, the anchor further includes:

[0050] A limiting element is selectively positioned between the drive tube and the puncture needle;

[0051] When the anchor is located inside the puncture needle and there is a preset distance between it and the distal end of the puncture needle, the limiting member is respectively engaged with the drive tube and the puncture needle to restrict the movement of the drive tube in the puncture needle;

[0052] During the movement of the anchor from the first position toward the distal end of the puncture needle, the limiting member disengages from the drive tube and the puncture needle; wherein, the first position is the position where the anchor is at a preset distance from the distal end of the puncture needle.

[0053] In one embodiment, the limiting member is disposed between the proximal locking structure and the distal locking structure of the anchor, and selectively protrudes from the sidewall of the drive tube;

[0054] At least when the anchor is located inside the puncture needle and there is a preset distance between it and the distal end of the puncture needle, the limiting member protrudes from the side wall of the drive tube so that the proximal end of the drive tube is blocked by the limiting member on the proximal side of the puncture needle.

[0055] During the movement of the anchor from the first position toward the distal end of the puncture needle, the limiting member disengages from the side wall of the drive tube.

[0056] In one embodiment, the limiting member is detachably disposed on the drive tube;

[0057] As the anchor moves from the first position toward the distal end of the puncture needle, the limiting member is configured to detach from the drive tube.

[0058] In one embodiment, a limiting member is disposed at the end of the anchor's proximal locking structure facing the distal locking structure;

[0059] The preset distance is 0, and the length of the limiting component is equal to the maximum length of the anchor extending beyond the distal end of the puncture needle.

[0060] In one embodiment, a limiting groove and a side groove communicating with the limiting groove are formed on the anchor. Both the limiting groove and the side groove extend along the length direction of the anchor, and one end of the limiting groove and the side groove penetrates the proximal end of the anchor.

[0061] When the proximal end of the anchor is located at the puncture needle, at least a portion of the pull line is located within the limiting groove, and during the process of the pull line pulling the anchor to flip, a portion of the pull line detaches from the anchor from the side groove.

[0062] In one embodiment, a clearance opening is formed at one end of the limiting groove near the anchor, one end of the clearance opening extends to the side groove opening, and the other end of the clearance opening extends to the side of the limiting groove opposite to the axis of the side groove opening.

[0063] In one embodiment, there is a gap between the other end of the clearance opening and the bottom of the limiting groove;

[0064] The bottom of the limiting groove is positioned opposite to the side opening.

[0065] In one embodiment, when the proximal end of the anchor is located at the puncture needle, the traction line extends along the axis of the limiting groove; or,

[0066] When the proximal end of the anchor is located near the puncture needle, the traction line is positioned between the axis of the limiting groove and the side groove opening.

[0067] In one embodiment, a line-laying cavity is formed on the anchor;

[0068] The wire feeding cavity and the limiting groove are connected by a through hole. The far end of the pull wire is confined in the wire feeding cavity, and the pull wire extends from the through hole into the limiting groove.

[0069] 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 release cavity so that the distal end of the pull wire is restricted within the wire release cavity.

[0070] In one embodiment, the sidewall of the anchor is recessed inward with a line-laying groove, and the groove cavity is configured as a line-laying cavity.

[0071] In one embodiment, an installation channel is formed inside the anchor, one end of which communicates with a through hole, and the other end of which extends to the distal end of the anchor.

[0072] The anchor has an end cap at its distal end, which is embedded in the installation channel from the distal end of the anchor, with one end spaced apart from the through hole.

[0073] A wire-feeding cavity is formed between one end of the end cap and the through hole.

[0074] On the other hand, embodiments of this application also provide an anchoring device, including:

[0075] The distal end of the puncture needle is configured to extend into the target tissue.

[0076] Anchors as shown above;

[0077] The anchor of the anchor moves along the puncture needle under the drive of the drive tube to enter the target tissue.

[0078] This application provides an anchor and anchoring device. By setting the traction wire as a flexible element and placing it inside a drive tube, when an anchor needs to be implanted at one end of the traction wire, a puncture needle can be first inserted into the target tissue. Then, the drive tube drives the traction wire and anchor to move along the puncture needle towards the target tissue until the anchor extends beyond the distal end of the puncture needle. At this point, the anchor can be flipped to form an angle with the traction wire, allowing it to stop against the inner wall of the target tissue. Thus, by pulling the traction wire, the target tissue is forced to adhere tightly to other tissues under the influence of the anchor. The drive tube allows the flexible traction wire and anchor to be smoothly implanted into the target tissue via the puncture needle. Attached Figure Description

[0079] Figure 1 This is a schematic diagram of the structure of one of the anchoring devices provided in an embodiment of this application;

[0080] Figure 2a This is a schematic diagram of another anchoring device provided in an embodiment of this application;

[0081] Figure 2b yes Figure 2a A magnified view of a section at point A in the middle;

[0082] Figure 3 This is a schematic diagram of the overall structure of an anchor provided in one embodiment of this application;

[0083] Figure 4 yes Figure 3 Cross-sectional view of the mid-to-rear locking structure;

[0084] Figure 5 yes Figure 4 A partial schematic diagram at point B in the middle;

[0085] Figure 6 This is a schematic diagram of the anchor in a first state according to an embodiment of this application;

[0086] Figure 7 This is a schematic diagram of the anchor in the second state according to an embodiment of this application;

[0087] Figure 8 yes Figure 3 A cross-sectional view of the mid-proximal locking structure;

[0088] Figure 9 yes Figure 3 A schematic diagram showing the fit between the mid-proximal locking structure and the limiting component;

[0089] Figure 10 This is a schematic diagram of the structure of one type of anchor provided in an embodiment of this application;

[0090] Figure 11 yes Figure 10 A cross-sectional view of the anchor and tie wire assembly in the middle;

[0091] Figure 12 yes Figure 11 Cross-sectional view of the central anchor;

[0092] Figure 13 yes Figure 6 A magnified view of a section at point C;

[0093] Figure 14 This is a schematic diagram of another anchor structure provided in one embodiment of this application.

[0094] Explanation of reference numerals in the attached figures:

[0095] 10 - Anchor; 20 - Puncture needle;

[0096] 100-Pull line; 200-Anchor; 300-Drive tube; 400-Distant locking structure; 500-Proximal locking structure; 600-Limiting component; 21-Fixing part;

[0097] 410 - Distant connector; 420 - Distant locking element; 430 - First storage channel; 510 - Proximal connector; 520 - Proximal locking element; 530 - Second storage channel;

[0098] 411-Guide part; 421-Distal fixing part; 422-Distal locking part; 423-First through hole; 521-Proximal fixing part; 522-Proximal locking part; 523-Second through hole;

[0099] 110 - First limiting part; 210 - Limiting groove; 220 - Wire feeding cavity; 220a - Wire feeding groove; 240 - Clearance opening; 250 - End cap; 260 - Installation channel; 410 - Second limiting part;

[0100] 210a - Groove bottom; 210b - Side groove opening; P - Flipping fulcrum; 210c - Through hole;

[0101] 300a - Proximal side of the drive transistor; 300b - Distal side of the drive transistor;

[0102] 240a - One end of the clearance opening; 240b - The other end of the clearance opening. Detailed Implementation

[0103] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0104] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0105] In the description of this application, it should be understood that the terms "upper," "lower," "horizontal," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In this application, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean 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.

[0106] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two entities connected are not linked by an intermediate structure, but are simply connected to form a whole. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0107] In this application, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0108] Endoscopic ultrasound (EUS) is a minimally invasive surgical procedure used to evaluate diseases of the digestive tract and lungs. In medical procedures involving the gastrointestinal tract, a fixator is inserted between two tissues to be drained, acting as a fistula to connect them. For example, in endoscopic ultrasound-guided gallbladder drainage, a fixator is inserted between the gallbladder and intestines, serving as a fistula to connect them.

[0109] Understandably, the gallbladder is in a free state, which makes it difficult to quickly install the fixation device between the gallbladder and the intestine.

[0110] To ensure rapid installation of the mounting bracket, this application provides an endoscope ultrasonic anchoring system, including an endoscope and an anchoring device. Figure 1 This is a structural schematic diagram of one embodiment of the anchoring device provided in this application. (Refer to...) Figure 1 As shown, the anchoring device includes an anchor 10, which has a pull line 100 and an anchor 200. The anchor 200 is connected to the distal end of the pull line 100 (see reference). Figure 1 (As shown in 100b).

[0111] When surgery is required, an anchor 200 can be first implanted into a target tissue, such as the gallbladder, through a first tissue, such as the intestine, under the guidance of an endoscope. For example, the endoscope cannula can be first introduced into the intestine, and then the anchor 10 can be inserted along the cannula channel. When the anchor 200 of the anchor 10 reaches the gallbladder through the intestine, the anchor 200 is stopped on the inner wall of the target tissue by pulling the traction line 100 outward. The traction line 100 is then pulled further, causing the anchor 200 to move the gallbladder tightly against the side wall of the intestine, that is, the gallbladder is anchored. This makes the gallbladder stable on the outside of the intestine. On the one hand, it facilitates the quick installation of a fixation frame between the intestine and the gallbladder. On the other hand, it makes the fixation frame more stable between the intestine and the gallbladder.

[0112] 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 embedded within the outer tube, the traction wire 100 of the anchor 10 is located in the inner tube, and the anchor 200 of the anchor 10 is located in the outer tube, with the proximal end of the anchor 200 abutting against the distal end of the inner tube. When the anchor 200 needs to be implanted, the inner tube, the anchor 200 inside, and the traction wire 100 can be inserted into the intestine through the endoscopic cannula via the outer tube. Then, keeping the outer tube stationary, the anchor 200 on the distal side of the inner tube is gradually extended out of the outer tube by pushing the inner tube, and passes through the intestine and the side wall of the gallbladder until it reaches the gallbladder. Then, the traction wire 100 is pulled, so that the anchor 200 stops against the side wall of the gallbladder, and the traction wire 100 is continued to be pulled, so that the gallbladder is closely attached to the intestine.

[0113] It is understandable that in the above example, anchor 200 not only serves to retract the gallbladder but also to puncture tissue. During the tissue puncture process, it is difficult for the endoscope to visualize anchor 200, making its position uncertain and thus affecting the implantation efficiency. Additionally, the anchor 200 may not be implanted far enough; for example, if anchor 200 is implanted on the lateral wall of the gallbladder but not fully inserted into the gallbladder, pulling the traction wire 100 will cause anchor 200 to flip, potentially damaging the gallbladder during this process. Conversely, the anchor 200 may be implanted too far, potentially damaging the gallbladder's inner wall and other tissues.

[0114] In addition, in the above example, the distal end of the pull line 100 is fixed to the middle position of the anchor 200 to ensure that the anchor 200 can achieve better flipping during the pulling of the pull line 100. In order to allow the pull line 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. The notch extends from the middle position to the proximal end of the anchor 200, so that the pull line 100 is introduced into the inner tube through the notch.

[0115] However, the aforementioned gap causes the contact point between the inner tube and the proximal end of the anchor 200 to deviate from the axis of motion of the inner tube. This makes it very easy for the inner tube to push the anchor 200 away from the axis of motion 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 form an angle with the inner tube, thus making it impossible for the anchor 200 to enter the interior of the gallbladder smoothly.

[0116] Figure 2a This is a schematic diagram of another anchoring device provided in one embodiment of this application. Figure 2b yes Figure 2a A magnified view of a portion at point A. (Refer to...) 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 sequentially through the intestine and gallbladder under the guidance of an endoscope. When the distal end of the puncture needle 20, i.e. the needle tip, reaches the preset position in the gallbladder, the anchor 10 is then moved along the needle path of the puncture needle 20 until the anchor 200 of the anchor 10 extends out of the distal end of the puncture needle 20, thus achieving the purpose of implanting the anchor 200 into the gallbladder.

[0117] To facilitate the implantation of the anchor 10, in some examples, the traction wire 100 is made of a rigid material and has a rebound force with the anchor 200, meaning the anchor 200 has a force that rebounds towards the anchoring position, where the anchoring position is the position where the anchor 200 has a preset angle with the traction wire 100. During implantation, the anchor 200 moves along the needle track of the puncture needle 20 under the push of the rigid traction wire 100 until the anchor 200 extends beyond the needle tip of the puncture needle 20. Under the action of the rebound force, the anchor 200 forms a preset angle with the traction wire 100, thereby pulling the traction wire 100, which allows the anchor 200 to pull the gallbladder tightly against the intestine.

[0118] 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 traction line 100 or have a retraction angle smaller than the preset angle under the constraint of the puncture needle 20. However, because the anchor 200 has a rebound force to return to the anchoring position, the force between the anchor 200 and the inner wall of the needle channel of the puncture needle 20 is relatively large, which makes the resistance between the anchor 200 and the inner wall of the needle channel of the puncture needle 20 relatively large during the movement, thus affecting the smooth implantation of the anchor 10.

[0119] Furthermore, because the traction wire 100 is made of a rigid material, it needs to push the anchor 200 along the puncture needle 20. Therefore, the diameter of the traction wire 100 is relatively large; for example, in this example, the diameter of the rigid traction wire 100 could be 0.63 mm. To avoid occupying too much space in the endoscope channel, in actual surgery, after the anchor 200 is inserted into the target tissue and before the fixation device is inserted, the endoscope is first withdrawn, then lowered to the side of the traction wire so that the traction wire is outside the endoscope channel, and then the fixation device is inserted through the endoscope channel. The entire surgical procedure is cumbersome and complex.

[0120] In addition, when there is no need to re-implant the endoscope, the size of the fixation device needs to be reduced, which affects the installation of the fixation device and the actual drainage effect.

[0121] This application provides an anchoring device and anchor. By setting the traction wire as a flexible element and placing it inside a drive tube, when an anchor needs to be implanted at one end of the traction wire, a puncture needle can be first inserted into the target tissue. Then, the drive tube drives the traction wire and anchor to move along the puncture needle towards the target tissue until the anchor extends beyond the distal end of the puncture needle. The anchor can then be flipped under the pull of the traction wire to form an angle with the traction wire, allowing the anchor to stop against the inner wall of the target tissue. By continuing to pull the traction wire, the target tissue can be pressed tightly against other tissues under the action of the anchor. The drive tube allows the flexible traction wire and anchor to be smoothly implanted into the target tissue via the puncture needle.

[0122] Furthermore, by using a flexible traction wire to avoid rebound force between the flexible element and the anchor, the anchor does not excessively contact the side wall of the puncture needle when moving within it. This reduces friction between the anchor and the puncture needle, ensuring stable movement of the anchor along the puncture needle under the drive tube, thereby improving the anchor's implantation stability and efficiency. Additionally, because the puncture needle is pre-implanted, the anchor in this embodiment does not require tissue puncture; it simply moves along the puncture needle to the gallbladder, preventing tilting during implantation and further improving implantation efficiency and success rate.

[0123] The structure of the anchoring device and anchor provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0124] Figure 3 This is a schematic diagram of the overall structure of an anchor provided in one embodiment of this application. Figure 4 yes Figure 3 A cross-sectional view of the mid-to-rear locking structure. Figure 5 yes Figure 4 A partial schematic diagram at point B in the middle. Figure 6 This is a schematic diagram of the anchor in a first state according to an embodiment of this application. Figure 7 This is a schematic diagram of the anchor in a second state according to an embodiment of this application. See also... Figures 1 to 7 As shown, this application embodiment 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 As shown in Figure 20b, the puncture needle 20 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 inserted along the cannula of the endoscope into a first tissue, such as the intestine, and then the puncture needle 20 can be further inserted 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 predetermined position in the target tissue, such as the gallbladder. The predetermined position is a position where the distal end of the puncture needle 20 can be well visualized.

[0125] For example, the puncture needle 20 may include, but is not limited to, a 19G ultrasonic needle.

[0126] In this embodiment, the anchor 10 includes a tension line 100, which is a flexible element. For example, the tension line 100 can be a flexible line made of fiber material or other flexible material. This embodiment does not limit the material of the tension line 100, as long as the tension line 100 is a flexible element.

[0127] Anchor 10 includes anchor 200, which is connected to the distal end of pull line 100 and can be pulled by pull line 100.

[0128] In some examples, anchor 200 can be flipped under the pull of pull line 100, so that there is an anchoring angle between anchor 200 and pull line 100.

[0129] In other examples, the anchor 200 can also be flipped in other ways. For example, the anchor 200 can be flipped by a drive unit located at the distal end of the puncture needle 20 or the traction line 100. This application embodiment does not limit the flipping method of the anchor 200.

[0130] The anchoring angle is the angle between the anchor 200 and the traction line 100 when the anchor 200 pulls the target tissue, such as the gallbladder, close to the intestine. For example, the anchoring angle can be 90° or 90°±10°, and can be adjusted according to the angle of the gallbladder's sidewall, ensuring that the anchor 200 fits snugly against the sidewall of the gallbladder. This embodiment does not limit the anchoring angle.

[0131] Reference Figure 3 and Figure 4 As shown, the anchor 10 in this embodiment includes a drive tube 300, at least a portion of which is sleeved on at least a portion of the pull wire 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 (see reference 100) under the drive of the drive tube 300. Figure 1 As shown in Figure 20a, the anchor 200 enters the needle channel of the puncture needle 20 and moves along the needle channel of the puncture needle 20. When it extends to the distal end of the puncture needle 20, it can be flipped under the pull of the traction line 100 to form an angle with the traction line 100, such as an anchoring angle, so that the anchor 200 stops against the inner wall of the target tissue, thereby continuing to pull the traction line 100, so that the target tissue adheres tightly to the outer wall of the first tissue under the action of the anchor 200, thus completing the anchoring of the target tissue.

[0132] For ease of description, the needle path of the puncture needle 20 can extend in the x-direction, and the radial direction of the needle path can be in the y-direction. The radial dimension of the drive tube 300 can be less than or equal to the radial dimension of the puncture needle 20 along the y-direction, allowing the drive tube 300 to move smoothly along the needle path of the puncture needle 20.

[0133] In some examples, the drive tube 300 may be entirely sleeved on the pull line 100, for example, the drive tube 300 may be entirely sleeved on the first part of the pull line 100. When the anchor 200 is located outside the drive tube 300, the first part may be the portion between the distal end 100b and the proximal end 100a of the pull line 100, such that a portion of the pull line 100 near the proximal end extends from the proximal side 300a of the drive tube 300 and is exposed on the proximal side of the drive tube 300, allowing the operator to pull the pull line 100 from the proximal end to cause the pull line 100 to rotate the anchor 200. Conversely, a portion of the pull line 100 near the distal end extends from the distal side 300b of the drive tube 300 and is located outside the drive tube 300, and can be connected to the anchor 200 to achieve the rotation of the anchor 200.

[0134] In other examples, a portion of the drive tube 300 may be fitted onto the pull wire 100. For instance, a hole may be formed in the sidewall of the drive tube 300, through which the proximal or distal end of the pull wire 100 may extend out of the drive tube 300. Exemplarily, a hole may be formed in the sidewall of the drive tube 300 near its proximal end, through which the proximal end of the pull wire 100 may extend out of the drive tube 300.

[0135] When the anchor 200 is located inside the drive tube 300, the first portion can also be the portion between the distal end of the pull line 100 and a position a first length from the distal end. Exemplarily, the first length can be a suitable length such as 2 / 3 or 3 / 4 of the total length of the pull line 100, that is, the proximal end of the pull line 100 (refer to...) Figure 1 As shown in 100a, the position at the second length from the proximal end can be exposed on the proximal side of the drive tube 300 so that the operator can pull the pull line 100 from the proximal end of the pull line 100 to cause the pull line 100 to drive the anchor 200 to flip.

[0136] It is understood that the second length is equal to the difference between the total length of the traction wire 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 traction wire 100. This application embodiment does not limit the first length and the second length, as long as it ensures that the drive tube 300 can drive the traction wire 100 and the anchor 200 to be smoothly implanted into the target tissue along the puncture needle 20, and that the operator can pull the proximal end of the traction wire 100 to flip the anchor 200 and anchor the target tissue to the outer wall of the first tissue.

[0137] Reference Figures 1 to 7 As shown, the following example illustrates the implantation process of the anchor 10, using the intestine as the first tissue and the gallbladder as the target tissue:

[0138] After the puncture needle 20 is implanted, the traction wire 100 and the anchor 200 at the distal end of the traction wire 100 can be pushed from the proximal end of the puncture needle 20 into the needle tract of the puncture needle 20 through the drive tube 300.

[0139] Continue pushing the drive tube 300 to advance the anchor 200 toward the distal end of the puncture needle 20 until the anchor 200 extends beyond the distal end of the puncture needle 20 and extends to the distal side of the drive tube 300. Then pull the traction line 100 to flip the anchor 200 to the anchoring angle.

[0140] It should be noted that in this step, "anchor 200 extending beyond the distal end of puncture needle 20" means that the entire part of anchor 200 extends beyond the distal end of puncture needle 20, or it can mean that part of anchor 200 extends beyond the distal end of puncture needle 20. As long as the pulling line 100 is pulled, the proximal end of anchor 200 can move to the outside of the distal end of puncture needle 20 during the flipping process.

[0141] The puncture needle 20 is retracted so that it is retracted into the forceps channel of the endoscope, and the drive tube 300 is retracted into the puncture needle 20; then the puncture needle 20 is withdrawn along with the drive tube 300, leaving the traction wire 100 in the forceps channel.

[0142] Pulling the traction line 100, for example, can be done from the proximal end of the traction line 100, so that the anchor 200 first adheres to the inner wall of the gallbladder, and then the gallbladder is pulled to the outer wall of the intestine, thus achieving the anchoring of the gallbladder.

[0143] The anchoring device of this application embodiment can also be used in ESD surgery. For example, during the tissue cutting process in ESD surgery, the anchor 200 in the anchoring device can pull the mucosa to prevent the tissue from obscuring the electrosurgical unit and improve the surgical field of vision.

[0144] Reference Figure 6 and Figure 7 As shown, in some examples, the drive tube 300 can be sleeved on the pull line 100, and the anchor 200 is located on the distal side of the drive tube 300. That is, the drive tube 300 is only sleeved on the pull line 100, and the anchor 200 is exposed outside the drive tube 300 and located on the distal side of the drive tube 300.

[0145] When the anchor 200 is located within the puncture needle 20, the proximal end of the anchor 200 (refer to...) Figure 5 and Figure 6 (As shown in 200a) it abuts against the distal end of the drive 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 drive tube 300 and the pull of the traction line 100.

[0146] Reference Figure 6 and Figure 7As shown, for example, during the implantation of anchor 10, drive tube 300 can first push the distal end of anchor 200 (see reference). Figures 5 to 7 As shown in Figure 200b, the anchor 20 is gradually inserted into the needle channel of the puncture needle 20 from the proximal end of the puncture needle 20. Then, the distal end of the drive tube 300 pushes against the proximal end of the anchor 200, causing the anchor 200 to advance towards the distal end of the puncture needle 20. When the anchor 200 extends beyond 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 drive tube 300 can continue to push against the anchor 200 and simultaneously pull the traction line 100, so that the anchor 200 achieves stable flipping under the assistance of the push of the drive tube 300 and the pull of the traction line 100.

[0147] Of course, in some examples, when the anchor 200 extends beyond the distal end of the puncture needle 20, the drive tube 300 does not need to press against the anchor 200, and the anchor 200 can be flipped under the pull of the traction line 100.

[0148] When the anchor 200 is located inside the puncture needle 20, the length direction of the anchor 200 can be parallel to the extension direction of the puncture needle 20 or at an angle to the extension direction of the puncture needle 20. However, because the traction wire 100 is a flexible component, there is no elastic force between the traction wire 100 and the anchor 200. This prevents the anchor 200 from excessively contacting the side wall of the puncture needle 20 when it moves inside the puncture needle 20. Instead, it moves only along the side wall of the puncture needle 20, reducing the friction between the anchor 200 and the puncture needle 20. This ensures that the anchor 200 moves stably along the puncture needle 20 under the drive of the drive tube 300, thereby improving the implantation stability and efficiency of the anchor 200.

[0149] In other examples, the drive tube 300 can be sleeved around the periphery of the traction wire 100 and the anchor 200, i.e., both the anchor 200 and the traction wire 100 are located inside the drive tube 300. During the implantation of the anchor 10, the distal end of the drive tube 300 can gradually enter the needle tract of the puncture needle 20 from the proximal end of the puncture needle 20, allowing the anchor 200 and part of the traction wire 100 to enter the needle tract of the puncture needle 20, thereby pushing the drive tube 300 and advancing it towards the distal end of the puncture needle 20 until the anchor 200 reaches the distal end of the puncture needle 20 under the drive of the drive tube 300. For example, the distal end of the drive tube 300 is flush with the distal end of the anchor 200. When the 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 has reached the distal end of the puncture needle 20. Then the drive tube 300 can be retracted, so that the anchor 200 is exposed by the drive tube 300, and the proximal end of the anchor 200 can be pressed against the distal end of the drive tube 300. Then the drive tube 300 is pushed towards the distal end of the puncture needle 20, so that the anchor 200 is exposed by the drive tube 300 until the proximal end of the anchor 200 just reaches the distal end of the puncture needle 20. Then the drive tube 300 can continue to press against the anchor 200, and at the same time pull the traction line 100, so that the anchor 200 can achieve stable flipping with the assistance of the pressing of the drive tube 300 and the pulling of the traction line 100.

[0150] Of course, in some examples, a portion of the anchor 200 can be placed inside the drive tube 300, while the other portion is exposed outside the drive tube 300. When the distal end of the anchor 200 reaches the distal end of the puncture needle 20, the drive tube 300 can be retracted, so that the proximal end of the anchor 200 abuts against the distal end of the drive tube 300. The drive tube 300 is then pushed further 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 drive tube 300. When the proximal end of the anchor 200 just reaches the distal end of the puncture needle 20, the drive tube 300 can continue to abut against the anchor 200, so that the anchor 200 can achieve stable flipping with the abutment assistance of the drive tube 300 and the pull of the traction line 100.

[0151] Understandably, in the above example, since the traction wire 100 is a flexible component, there is no rebound force between the traction wire 100 and the anchor 200. This prevents the anchor 200 from tightly contacting the side wall of the drive tube 300, allowing the anchor 200 and the drive tube 300 to move relative to each other when the drive tube 300 is retracted. It is sufficient to ensure that the anchor 200 and the traction wire 100 can be pushed together to the distal end of the puncture needle 20 during the advancement of the drive tube 300.

[0152] In addition, because the puncture needle 20 is pre-implanted, the anchor 200 in this embodiment of the application does not need to puncture the tissue. It 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 at an angle into the target tissue, and further improving the implantation efficiency and implantation success rate of the anchor 200.

[0153] Compared to the rigid traction suture 100 example mentioned above, the flexible traction suture 100 and drive tube 300 configuration allow for a smaller diameter of the traction suture 100. This reduces the space occupied by the traction suture 100 in the endoscope channel, eliminating the need to remove the endoscope and re-insert it beside the traction suture 100 before implanting the fixation device. This simplifies the surgical procedure and improves efficiency. Furthermore, it eliminates the need to reduce the size of the fixation device, ensuring installation efficiency and stability, as well as effective drainage.

[0154] For example, the diameter of the flexible pull line 100 can be 0.15mm, 0.1mm or 0.2mm, etc., which is smaller than the diameter of the rigid pull line 100. In this embodiment of the application, the diameter of the pull line 100 is not limited, as long as it is ensured that the pull line 100 can pull the anchor 200 to flip.

[0155] 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 secure to the proximal end of the puncture needle 20, for example, see reference to Figure 2b The proximal end of the puncture needle 20 shown may have a fixing part 21, and the distal locking structure 400 may be fixed to the fixing part 21 by means of internal and external thread engagement, snap connection, flange connection, etc., so as to realize the fixation of the anchor 10 and the proximal end of the puncture needle 20.

[0156] For example, one end of the remote locking structure 400 that mates with the fixing part 21 has an inclined guide surface, so that the end of the remote locking structure 400 forms a tapered guide part 411. During assembly, the guide part 411 can be inserted into the fixing part 21 first to achieve pre-positioning of the remote locking structure 400 and the fixing part 21, and then the remote locking structure 400 can be fixed to the fixing part 21 by means of thread engagement or the like.

[0157] Because the anchor 10 is relatively long, the guide part 411 can initially position the distal locking structure 400 on the fixing part 21 of the puncture needle 20, thereby facilitating the rapid assembly and fixing of the distal locking structure 400 and the fixing part 21, and avoiding the situation where the anchor 10 shakes randomly and cannot be quickly assembled with the fixing part 21.

[0158] For example, a first receiving channel 430 is formed within the distal locking structure 400, the first receiving channel 430 communicating with the needle path of the puncture needle 20, and a portion of the drive tube 300 and the anchor 200 are located within the first receiving channel 430. For instance, the drive tube 300 and the anchor 200 located on the distal side of the drive tube 300 are located within the first receiving channel 430.

[0159] During the implantation of the anchor 10, the distal locking structure 400 can be first fixed to the fixing part 21 at the proximal end of the puncture needle 20 to fix the anchor 10. Then, the drive tube 300 is pushed so that the drive tube 300 and the anchor 200 transition along the first receiving channel 430 to the puncture needle 20. The distal locking structure 400 facilitates the alignment of the drive tube 300 and the anchor 200 with the distal end of the puncture needle 20 and can quickly push the anchor 200 into the needle channel of the puncture needle 20, thereby improving the implantation efficiency of the anchor 10 into the puncture needle 20.

[0160] In some examples, the distal locking structure 400 may selectively engage with the drive tube 300 to lock the drive tube 300 and the anchor 200 within the first receiving channel 430, allowing the drive tube 300 to rapidly insert the anchor 200 into the needle channel of the puncture needle 20 when the anchor 10 is abutted against the proximal end of the puncture needle 20. For example, before inserting the anchor 200 into the puncture needle 20, the distal locking structure 400 may engage with the drive tube 300 to lock the drive tube 300 and the anchor 200 within the first receiving channel 430. This prevents the drive tube 300 from accidentally inserting the anchor 200 into the first receiving channel 430 before the anchor 10 is secured to the puncture needle 20, leaving the anchor 200 in a free state and thus unable to rapidly abut against the proximal end of the puncture needle 20.

[0161] In addition, when the anchor 200 is flipped to the anchoring angle, during the process of retracting the puncture needle 20 and the drive tube 300, the drive tube 300 can be locked onto the puncture needle 20 by the cooperation of the distal locking structure 400 with the drive tube 300. This allows the drive tube 300 to be retracted outside the body simultaneously during the retraction of the puncture needle 20, leaving the traction wire 100 in the forceps channel of the endoscope.

[0162] When it is necessary for the drive tube 300 to move relative to the puncture needle 20, the drive tube 300 can be released through the distal locking structure 400, allowing the drive tube 300 to move along the puncture needle 20. For example, when the distal end of the puncture needle 20 reaches a preset position, the drive tube 300 can be released through the distal locking structure 400. In this way, by advancing the drive tube 300 towards the puncture needle 20, the traction wire 100 and the anchor 200 can be advanced along the puncture needle 20 towards the target tissue.

[0163] In some examples, the remote locking structure 400 may be a cylindrical structure, the interior of which forms a first receiving channel 430 along the length of the cylindrical structure for the drive tube 300 and the anchor 200 to pass through.

[0164] For example, an elastic protrusion can be formed on the inner wall of the distal locking structure 400, extending towards the first receiving channel 430. By abutting the outer wall of the drive tube 300, the drive tube 300 and the anchor 200 are locked onto 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 can detach from the outer wall of the drive tube 300, allowing the drive tube 300 and the anchor 200 to be released from the distal locking structure 400, thereby allowing the drive tube 300 to move along the puncture needle 20. By forming an elastic protrusion on the inner wall of the distal locking structure 400 to lock the drive tube 300, the structure and assembly process of the distal locking structure 400 can be simplified.

[0165] 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 forms at least a portion of a first receiving channel 430 for the drive tube 300 and the anchor 200 to pass through. For example, the distal connector 410 is fixedly connected to the fixation portion 21 of the proximal end of the puncture needle 20.

[0166] The remote locking member 420 is disposed on the remote connector 410 and is configured to selectively engage with the drive tube 300 to lock or release the drive tube 300 and the anchor 200 on the remote connector 410.

[0167] For example, when the distal locking member 420 engages with the drive tube 300, the drive tube 300 can be locked onto the distal connector 410; when the distal locking member 420 disengages from the drive tube 300, the drive tube 300 can be released onto the distal connector 410, allowing the drive tube 300 to move relative to the distal connector 410, so that the drive tube 300 can push the anchor 200 along the first receiving channel 430 into the needle channel of the puncture needle 20.

[0168] In some examples, the distal locking member 420 may be a limiting pin passing through the distal connector 410. For example, the distal connector 410 has a pin hole, and the limiting pin passes through the pin hole. After the distal connector 410 is fixedly connected to the fixing part 21 of the puncture needle 20, the limiting pin can be pushed further into the pin hole until one end of the limiting pin abuts against the outer wall of the drive tube 300, thereby locking the drive tube 300 and the anchor 200. When the limiting pin is pulled outward, causing one end of the limiting pin to disengage from the drive tube 300, the drive tube 300 and the anchor 200 can be released.

[0169] In other examples, the remote locking member 420 may include a remote fixing portion 421 and a remote locking portion 422. The remote fixing portion 421 forms a first receiving channel 430 and can be selectively fixed to or detached from the remote connector 410. In other words, the remote fixing portion 421 can be fixed to or detached from the remote connector 410.

[0170] The remote locking part 422 is located within the remote fixing part 421. When the remote fixing part 421 is fixed to the remote connector 410, the remote locking part 422 is configured to cooperate with the remote connector 410 and act on the drive tube 300 to lock the drive tube 300 and the anchor 200.

[0171] For example, the distal fixing part 421 is a cylindrical structure. When the cylindrical structure is fixed with the distal connector 410, it can be sleeved on part of the structure of the distal connector 410. The distal locking part 422 is located on the inner wall of the distal fixing part 421, that is, on the inner wall of the first storage channel 430.

[0172] For example, the distal fixing part 421 is a hollow structure, and the end of the distal fixing part 421 away from the distal connector 410 has a through hole (e.g., a first through hole 423) through which the drive tube 300 passes. The end of the distal fixing part 421 facing the distal connector 410 is an open structure, which allows the distal connector 410 to enter into the distal fixing part 421 and connect with it. It can be understood that the hollow cavity of the distal fixing part 421 can serve as part of the first receiving channel 430. When the distal fixing part 421 is detached from the distal connector 410, the hollow cavity allows the drive tube 300 to pass through. The first through hole 423 at the end of the distal fixing part 421 serves as another part of the first receiving channel 430, allowing the proximal end of the drive tube 300 to pass through the distal locking structure 400.

[0173] For example, the remote fixing part 421 may be a remote locking nut, which is threadedly connected to the remote connector 410 to simplify the connection structure between the remote fixing part 421 and the remote connector 410, and also facilitates fixing the remote locking part 422 in the remote fixing part 421, and facilitates the engagement of the remote locking part 422 with the remote connector 410.

[0174] When the remote fixing part 421 is fixed to the remote connector 410, one end of the remote connector 410 extends into the remote fixing part 421 and abuts against the remote locking part 422. Under the abutment of the remote connector 410, one end of the remote locking part 422 acts on the drive tube 300, for example, one end abuts against the drive tube 300 to lock the drive tube 300 and the anchor 200.

[0175] When the distal fixing part 421 is released from the distal connector 410, the distal locking part 422 is configured to disengage from the distal connector 410 to release the drive tube 300 and the anchor 200. For example, when the distal fixing part 421 is released from the distal connector 410, one end of the distal connector 410 will disengage from the interior of the distal fixing part 421, thereby disengaging from the distal locking part 422. After the distal locking part 422 disengages from the abutment of the distal connector 410, it can return to its original position, causing one end of the distal locking part 422 to disengage from the drive tube 300 to release the drive tube 300 and the anchor 200.

[0176] For example, the remote locking part 422 may be a lever (e.g., a first lever) provided on the inner wall of the remote fixing part 421, the initial angle between the first lever and the inner wall of the remote fixing part 421 is less than 90°, and it is inclined toward the direction of the remote connector 410.

[0177] When the distal fixing part 421 is fixed to the distal connector 410, one end of the distal connector 410 extends into the distal fixing part 421 and abuts against the first lever. The first lever rotates under the abutment and push of the distal connector 410, causing the first lever to rotate in a direction perpendicular to the inner wall of the distal fixing part 421 until the free end of the first lever is on the drive tube 300, thereby locking the drive tube 300.

[0178] When the distal fixing part 421 is removed from the distal connector 410, one end of the distal connector 410 will detach from the interior of the distal fixing part 421, thereby disengaging from the first lever. After the first lever disengages from the abutment of the distal connector 410, it can rotate to the initial position, that is, the angle between the lever and the inner wall of the distal fixing part 421 is the initial angle, so that the free end of the first lever disengages from the drive tube 300, thereby releasing the drive tube 300.

[0179] In this embodiment, the locking and releasing process of the remote locking part 422 on the drive tube 300 is linked with the fixing and releasing of the remote fixing part 421 relative to the remote connector 410. For example, when the remote fixing part 421 is fixed to the remote connector 410, the remote locking part 422 will lock the drive tube 300 with the cooperation of the remote connector 410. When the remote fixing part 421 is released from the remote connector 410, the remote locking part 422 will release the drive tube 300 and the anchor 200. In this way, the operator can lock and release the drive tube 300 by operating the remote fixing part 421 without performing any other additional locking operations, thus simplifying the locking and releasing process of the drive tube 300.

[0180] In some examples, the distal locking portion 422 may be a distal elastic member embedded within the distal fixing portion 421, and the distal elastic member is elastic at least along a first direction; the first direction intersects the extension direction of the drive tube 300. When the distal fixing portion 421 is fixed to the distal connector 410, the distal elastic member is compressed by the distal connector 410 and abuts against the drive tube 300 along the first direction to lock the drive tube 300 and the anchor 200; when the distal fixing portion 421 is released from the distal connector 410, the distal elastic member disengages from the distal connector 410 to release the drive tube 300 and the anchor 200 during the rebound process.

[0181] For example, a distal elastic member is disposed between the inner wall of the distal fixing portion 421 and the drive tube 300. 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 drive tube 300. It should be noted that the first direction can be perpendicular to the extending direction of the drive tube 300, or the angle between the first direction and the extending direction of the drive tube 300 can be an obtuse angle or an acute angle. The first direction can be referred to... Figure 4 In the direction 'a'. It can be understood that direction 'a' can be the y-direction, or it can form an angle with the y-direction.

[0182] It is understandable that the angle between the extending directions of the drive tube 300 refers to the angle between the first end of the distal elastic member and the drive tube 300 toward the distal connector 410.

[0183] Taking the first direction as perpendicular to the extension direction of the drive tube 300, i.e., the first direction being the y-direction, as an example, there is a certain gap between the portion of the first end of the distal elastic member near the distal connector 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 drive tube 300, the drive 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 only has simple contact with the drive tube 300, and the force between them is relatively small.

[0184] When the distal fixing part 421 is fixed to the distal connector 410, the distal connector 410 extends into the gap between the first end of the distal elastic member and the distal fixing part 421. The distal elastic member is squeezed by the distal connector 410 and abuts against the drive tube 300 in the first direction. For example, the distal connector 410 squeezes the distal elastic member in the first direction, so that the second end of the distal elastic member is in close contact with the drive tube 300, that is, the force between the second end of the distal elastic member and the drive tube 300 increases, so as to lock the drive tube 300 and the anchor 200. When the distal fixing part 421 is released from the distal connector 410, the distal elastic member is released from the distal connector 410, and the distal elastic member returns to the initial state, so that the force between the second end of the distal elastic member and the drive tube 300 decreases, that is, the distal elastic member releases the drive tube 300 and the anchor 200 during the rebound process.

[0185] Of course, in some examples, when the first direction is at an acute angle to the extension direction of the drive tube 300, when the distal fixing part 421 is fixed to the distal connector 410, the distal connector 410 tilts and presses the distal elastic member along the first direction. Under the pressure of the distal connector 410, the second end of the distal elastic member abuts against the drive tube 300 to lock the drive tube 300 and the anchor 200. When the distal fixing part 421 is released from the distal connector 410, the distal elastic member disengages from the distal connector 410 and returns to its initial state along the first direction, thereby reducing the force between the second end of the distal elastic member and the drive tube 300. That is, the distal elastic member releases the drive tube 300 and the anchor 200 during the rebound process.

[0186] In some examples, the distal elastic element can be a spring, an elastic washer, or the like. When the distal elastic element is a spring or an elastic washer, there can be one or more distal elastic elements. When there is one distal elastic element, it is positioned at any circumferential position of the distal fixing part 421. When there are multiple distal elastic elements, they can be spaced apart circumferentially along the inner wall of the distal fixing part 421, that is, spaced apart circumferentially around the drive tube 300. This allows the second ends of the multiple distal elastic elements to abut against multiple circumferential positions of the drive tube 300 when pressed by the distal connector 410, thereby achieving stable locking of the drive tube 300.

[0187] By setting the remote locking member 420 as a remote elastic member, on the one hand, it is convenient to assemble the remote locking member 420 between the remote fixing part 421 and the drive tube 300. On the other hand, it also enables the remote locking member 420 to reliably cooperate with the remote connector 410 and deform accordingly, thereby improving the reliability of locking the drive tube 300. In addition, setting the remote locking member 420 as a remote elastic member also enables the remote locking member 420 to smoothly spring back to its original position after disengaging from the remote connector 410, thereby improving the reliability of releasing the drive tube 300.

[0188] In some examples, the distal elastic element may be a distal elastic sleeve. The distal elastic sleeve has a first through hole for the drive tube 300 to pass through. For example, the distal elastic sleeve is fitted onto a portion of the outer wall of the drive tube 300, and the distal elastic sleeve is housed in the end cavity of the distal fixing portion 421.

[0189] When the distal elastic sleeve is in its initial state, that is, when it is not engaged with the distal connector 410, the wall of the first through hole is in simple contact with the drive tube 300, and the drive tube 300 can move relative to the first through hole.

[0190] When the distal connector 410 enters the distal fixing part 421 and squeezes the distal elastic sleeve, the wall of the first through hole of the distal elastic sleeve abuts against the drive tube 300 under the squeezing of the distal connector 410, so as to lock the drive tube 300 and the anchor 200. After disengaging from the distal connector 410, the wall of the first through hole rebounds to release the drive tube 300 and the anchor 200.

[0191] For example, when the distal fixing part 421 is fixed to the distal connector 410, the distal connector 410 presses the distal elastic sleeve along the first direction. After being pressed by the distal connector 410, the distal elastic sleeve deforms at least along the first direction, i.e., is compressed. The wall of its first through hole abuts against the drive tube 300, which increases the force between the wall of the first through hole and the drive tube 300, thereby locking the drive tube 300 and the anchor 200. When the distal fixing part 421 is released from the distal connector 410, the distal elastic sleeve disengages from the distal connector 410 and returns to its initial state, which reduces the force between the wall of the first through hole and the drive tube 300. That is, the distal elastic sleeve releases the drive tube 300 and the anchor 200 during the rebound process.

[0192] By setting the distal elastic element as a distal elastic sleeve, after the distal elastic sleeve is squeezed by the distal connector 410, it can abut against the entire circumferential surface of the drive tube 300, thereby achieving stable locking of the drive tube 300.

[0193] For example, the distal elastic sleeve may include a sleeve structure with elastic deformation such as a silicone sleeve. The embodiments of this application do not limit the material of the distal elastic sleeve.

[0194] 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 compressed and deformed by the circumferential end wall of the distal connector 410, thereby making the inner wall of the first through hole and the force at each position of the drive tube 300 in the circumferential direction the same, thereby ensuring that the drive tube 300 is subjected to uniform force and will not tilt.

[0195] Of course, in some examples, the distal elastic sleeve can also be a square or irregular sleeve structure. This application embodiment does not limit the shape of the distal elastic sleeve.

[0196] Figure 8 yes Figure 3 Cross-sectional view of the mid-proximal locking structure. (Refer to...) Figure 3 and Figure 8 As shown, in some examples, the anchor 10 may also include a proximal locking structure 500.

[0197] The proximal locking structure 500 is disposed at the proximal end of the drive tube 300 and is fixedly connected to the drive tube 300. For example, the proximal locking structure 500 can be fixedly connected to the drive tube 300 by welding, bonding, snap-fitting, etc. The embodiments of this application do not limit the connection method between the proximal locking structure 500 and the drive tube 300.

[0198] In some examples, a second receiving channel 530 is formed within the proximal locking structure 500, through which the pull wire 100 passes. Exemplarily, a portion of the second receiving channel 530 may directly pass through the pull wire 100 exposed on the proximal side of the drive tube 300, while another portion may receive a portion of the proximal end of the drive tube 300 and be fixedly connected to the drive tube 300.

[0199] Because the pull wire 100 in this embodiment is a flexible component, the drive tube 300, during the process of pushing the flexible component and the anchor 200 towards the distal end of the puncture needle 20,

[0200] The proximal locking structure 500 is configured to selectively engage with the pull line 100 to lock the pull line 100 onto the drive tube 300.

[0201] It is understandable that, since the proximal end of the drive tube 300 is fixed to the proximal locking structure 500, the pull line 100 is locked within the proximal locking structure 500, thereby locking the pull line 100 to the drive tube 300.

[0202] For example, the distal end of the pull line 100 is fixed to the anchor 200, which is located on the distal side of the drive tube 300, and the proximal end of the anchor 200 abuts against the distal end of the drive tube 300. When it is not necessary for the pull line 100 to move relative to the drive tube 300, the pull line 100 can be tightened inside the drive tube 300, and the pull line 100 can be tightened and locked onto the drive tube 300 by the proximal locking structure 500. In this way, the pull line 100 can be prevented from moving relative to the drive tube 300.

[0203] For example, before the drive tube 300 carries the traction wire 100 and anchor 200 into the puncture needle 20, the traction wire 100 can be tightened and locked onto the drive tube 300 by the proximal locking structure 500. Then, the drive tube 300 can drive the traction wire 100 and anchor 200 to move synchronously along the puncture needle 20 into the target tissue. In this way, the traction wire 100 can be prevented from accumulating in the puncture needle 20 during the delivery of the anchor 200 by the drive tube 300.

[0204] For example, if the anchor 200 is accidentally pulled back during the delivery process and then continues to move forward, compared to the tensionless tension line 100, the tension line 100 tightened by the proximal locking structure 500 can alleviate or prevent it from accumulating between the far end of the drive tube 300 and the anchor 200. This prevents the accumulated and tangled tension line 100 from affecting the smooth pushing of the anchor 200 by the drive tube 300. In addition, it also prevents the anchor 200 from being affected by the normal rotation during the subsequent pullback of the tension line 100.

[0205] 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 line 100, so that the pull line 100 can move relative to the drive tube 300. In this way, the anchor 200 can be flipped by pulling the pull line 100.

[0206] In some examples, the proximal locking structure 500 may be a cylindrical structure, the interior of which forms a second receiving channel 530 along the length of the cylindrical structure for the pull wire 100 to pass through. Exemplarily, an elastic protrusion may be formed on the inner wall of the proximal locking structure 500, the elastic protrusion extending toward the second receiving channel 530.

[0207] When the proximal locking structure 500 is fixed to the proximal end of the drive tube 300, the elastic protrusion abuts against the outer wall of the pull wire 100, locking the pull wire 100 onto the proximal locking structure 500. Because the proximal locking structure 500 is fixed to the drive tube 300, the pull wire 100 is locked to the drive tube 300 and cannot move relative to it. When the proximal locking structure 500 is released from the drive tube 300, i.e., after being released from the drive tube 300, the elastic protrusion can detach from the outer wall of the pull wire 100, allowing the pull wire 100 to be released from the proximal locking structure 500 and thus freed from the drive tube 300, enabling relative movement along it. By forming an 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.

[0208] 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 drive tube 300 and forms at least a portion of a second receiving channel 530 for the pull wire 100 to pass through. Exemplarily, the proximal portion of the drive tube 300 may also be fixed within the second receiving channel 530, with the portion of the pull wire 100 extending from the proximal end of the drive tube 300 passing through other portions of the second receiving channel 530.

[0209] The proximal locking member 520 is disposed on the proximal connector 510 and is configured to selectively engage with the pull line 100 to lock or release the pull line 100 onto the proximal connector 510.

[0210] For example, when the proximal locking member 520 engages with the pull line 100, the pull line 100 can be locked onto the proximal connector 510, and the proximal connector 510 is fixed to the proximal end of the drive tube 300, thus locking the pull line 100 onto the drive tube 300, so that the pull line 100 is taut inside the drive tube 300 and cannot move relative to the drive tube 300; when the proximal locking member 520 disengages from the proximal connector 510, the pull line 100 can be released onto the proximal connector 510, that is, released onto the drive tube 300, so that the pull line 100 can move relative to the drive tube 300.

[0211] In some examples, the proximal locking member 520 can be a limiting pin passing through the proximal connector 510. For example, the proximal connector 510 has a pin hole, and the limiting pin passes through the pin hole. After the proximal connector 510 is fixedly connected to the proximal end of the drive tube 300, the limiting pin can be pushed further into the pin hole until one end of the limiting pin abuts against the outer wall of the pull line 100, thereby locking the pull line 100. When the limiting pin is pulled outward, causing one end of the limiting pin to disengage from the pull line 100, the pull line 100 can be released.

[0212] In 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 forms a second receiving channel 530 and can be selectively fixed to or detached from the proximal connector 510. In other words, the proximal fixing portion 521 can be fixed to or detached from the proximal connector 510.

[0213] The proximal locking part 522 is located within the proximal fixing part 521. When the proximal fixing part 521 is fixed to the proximal connector 510, the proximal locking part 522 is configured to engage with the proximal connector 510 and act on the pull line 100 to lock the pull line 100. For example, the proximal fixing part 521 is a cylindrical structure. When this cylindrical structure is fixed to the proximal connector 510, it can be sleeved on a portion of the structure of the proximal connector 510. The proximal locking part 522 is located on the inner wall of the proximal fixing part 521, that is, on the inner wall of the second storage channel 530.

[0214] For example, the proximal fixing part 521 is a hollow structure, and one end of the proximal fixing part 521 near the proximal connector 510 has a through hole (e.g., a second through hole 523) through which the pull wire 100 passes. The end of the proximal fixing part 521 facing the proximal connector 510 is an open structure, which allows the proximal connector 510 to enter into the proximal fixing part 521 and connect with it. It can be understood that the hollow cavity of the proximal fixing part 521 can serve as part of a second receiving channel 530. When the proximal fixing part 521 is detached from the proximal connector 510, the hollow cavity allows the pull wire 100 to pass through, and the second through hole 523 at the end of the proximal fixing part 521 serves as another part of the second receiving channel 530, allowing the proximal end of the pull wire 100 to pass through the proximal locking structure 500.

[0215] For example, the proximal fixing part 521 may be a proximal locking nut, which is threadedly connected to the proximal connector 510 to simplify the connection structure between the proximal fixing part 521 and the proximal connector 510, and also facilitates fixing the proximal locking part 522 inside the proximal fixing part 521, and facilitates the cooperation between the proximal locking part 522 and the proximal connector 510.

[0216] When the proximal fixing part 521 is fixed to the proximal connector 510, one end of the proximal connector 510 extends into the proximal fixing part 521 and abuts against the proximal locking part 522. Under the abutment of the proximal connector 510, one end of the proximal locking part 522 acts on the pull line 100, for example, one end abuts against the pull line 100 to lock the pull line 100.

[0217] When the proximal fixing part 521 is released from the proximal connector 510, the proximal locking part 522 is configured to disengage from the proximal connector 510 to release the pull line 100.

[0218] For example, when the proximal fixing part 521 is removed from the proximal connector 510, one end of the proximal connector 510 will disengage from the interior of the proximal fixing part 521, thereby disengaging from the proximal locking part 522. After the proximal locking part 522 disengages from the abutment of the proximal connector 510, it can return to its original position, so that one end of the proximal locking part 522 disengages from the pull line 100, thereby releasing the pull line 100.

[0219] For example, the proximal locking part 522 may be a lever (e.g., a second lever) provided on the inner wall of the proximal fixing part 521, the initial included angle between the second lever and the inner wall of the proximal fixing part 521 is less than 90°, and it is inclined toward the proximal connector 510.

[0220] When the proximal fixing part 521 is fixed to the proximal connector 510, one end of the proximal connector 510 extends into the proximal fixing part 521 and abuts against the second lever. The second lever rotates under the abutment and push of the proximal connector 510, causing the second lever to rotate in a direction perpendicular to the inner wall of the proximal fixing part 521 until the free end of the second lever is on the pull line 100, thereby locking the pull line 100.

[0221] When the proximal fixing part 521 is removed from the proximal connector 510, one end of the proximal connector 510 will detach from the interior of the proximal fixing part 521, thereby disengaging from the second lever. After the second lever disengages from the abutment of the proximal connector 510, it can rotate to the initial position, that is, the angle between the second lever and the inner wall of the proximal fixing part 521 is the initial angle, so that the free end of the second lever disengages from the pull line 100, thereby releasing the pull line 100.

[0222] In this embodiment, the locking and releasing process of the pull wire 100 by the proximal locking part 522 is linked with the fixing and releasing of the proximal fixing part 521 relative to the proximal connector 510. For example, when the proximal fixing part 521 is fixed to the proximal connector 510, the proximal locking part 522 will lock the pull wire 100 with the cooperation of the proximal connector 510. When the proximal fixing part 521 is released from the proximal connector 510, the proximal locking part 522 will release the pull wire 100. In this way, the operator can lock and release the pull wire 100 by operating the proximal fixing part 521 without performing any other additional locking operations, thus simplifying the locking and releasing process of the pull wire 100.

[0223] 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 the extension direction of the pull wire 100;

[0224] When the proximal fixing part 521 is fixed to the proximal connector 510, the proximal elastic member is squeezed by the proximal connector 510 and abuts against the tension line 100 in the first direction to lock the tension line 100.

[0225] When the proximal fixing part 521 is released from the proximal connector 510, the proximal elastic member disengages from the proximal connector 510 to release the tension line 100 during the rebound process.

[0226] For example, a proximal elastic member is disposed between the inner wall of the proximal fixing portion 521 and the tension wire 100. 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 tension wire 100. It should be noted that the first direction may be perpendicular to the extension direction of the tension wire 100, or the angle between the first end of the proximal elastic member and the extension direction of the tension wire 100 may be an obtuse angle or an acute angle. It is understood that the angle between the extension directions of the tension wire 100 refers to the angle between the first end of the proximal elastic member and the tension wire 100 towards the proximal connector 510.

[0227] Taking the direction perpendicular to the extension direction of the tension wire 100 as an example, there is a certain gap between the portion of the first end of the proximal elastic member near the proximal connector 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 tension wire 100, the tension 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 only has simple contact with the tension wire 100, and the force between them is small.

[0228] When the proximal fixing part 521 is fixed to the proximal connector 510, the proximal connector 510 extends into the gap between the first end of the proximal elastic member and the proximal fixing part 521. The proximal elastic member is squeezed by the proximal connector 510 and abuts against the tension line 100 in the first direction. For example, the proximal connector 510 squeezes the proximal elastic member in the first direction, so that the second end of the proximal elastic member is in close contact with the tension line 100, that is, the force between the second end of the proximal elastic member and the tension line 100 increases, so as to lock the tension line 100. When the proximal fixing part 521 is released from the proximal connector 510, the proximal elastic member is released from the proximal connector 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 tension line 100 decreases, that is, the proximal elastic member releases the tension line 100 during the rebound process.

[0229] Of course, in some examples, when the first direction is at an acute angle to the extension direction of the tension line 100, when the proximal fixing part 521 is fixed to the proximal connector 510, the proximal connector 510 tilts and presses the proximal elastic member along the first direction. Under the pressure of the proximal connector 510, the second end of the proximal elastic member abuts against the tension line 100 to lock the tension line 100. When the proximal fixing part 521 is released from the proximal connector 510, the proximal elastic member disengages from the proximal connector 510 and returns to its initial state along the first direction, thereby reducing the force between the second end of the proximal elastic member and the tension line 100. That is, the proximal elastic member releases the tension line 100 during the rebound process.

[0230] In some examples, the proximal elastic element can be a spring, an elastic washer, or the like. When the proximal elastic element is a spring or an elastic washer, there can be one or more proximal elastic elements. When there is one proximal elastic element, it is positioned at any circumferential position of the proximal fixing part 521. When there are multiple proximal elastic elements, they can be spaced apart circumferentially along the inner wall of the proximal fixing part 521, that is, spaced apart circumferentially around the tension line 100. This allows the second ends of the multiple proximal elastic elements to abut against multiple circumferential positions of the tension line 100 when compressed by the proximal connector 510, thereby achieving stable locking of the tension line 100.

[0231] 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 part 521 and the pull line 100. 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 line 100. In addition, setting the proximal locking member 520 as a proximal elastic member also enables the proximal locking member 520 to smoothly spring back to its original position after disengaging from the proximal connecting member 510, thereby improving the reliability of releasing the pull line 100.

[0232] In some examples, the proximal elastic element can be a proximal elastic sleeve;

[0233] The proximal elastic sleeve has a second through hole for the pull wire 100 to pass through.

[0234] For example, a proximal elastic sleeve is fitted onto a portion of the outer wall of the traction wire 100, and the proximal elastic sleeve is housed in the end cavity of the proximal fixing portion 521 relative to the opening structure.

[0235] When the proximal elastic sleeve is in its initial state, that is, when it is not engaged with the proximal connector 510, the wall of the second through hole is in simple contact with the pull wire 100, and the pull wire 100 can move relative to the second through hole.

[0236] When the proximal connector 510 enters the proximal fixing part 521 and squeezes the proximal elastic sleeve, the wall of the second through hole abuts the pull wire 100 under the compression of the proximal connector 510 to lock the drive tube 300, and after disengaging from the proximal connector 510, the wall of the through hole rebounds to release the pull wire 100.

[0237] For example, when the proximal fixing part 521 is fixed to the proximal connector 510, the proximal connector 510 compresses the proximal elastic sleeve in the first direction. After being compressed by the proximal connector 510, the proximal elastic sleeve deforms at least in the first direction, i.e., it is compressed. The wall of its second through hole abuts against the tension wire 100, which increases the force between the wall of the second through hole and the tension wire 100, thereby locking the tension wire 100. When the proximal fixing part 521 is released from the proximal connector 510, the proximal elastic sleeve disengages from the proximal connector 510 and returns to its initial state, which reduces the force between the wall of the second through hole and the tension wire 100. That is, the proximal elastic sleeve releases the tension wire 100 during the rebound process.

[0238] By setting the near-end elastic element as a near-end elastic sleeve, after the near-end elastic sleeve is squeezed by the near-end connector 510, it can abut against the entire circumferential surface of the pull wire 100, thereby achieving stable locking of the pull wire 100.

[0239] For example, the proximal elastic sleeve may include a sleeve structure with elastic deformation such as a silicone sleeve. The embodiments of this application do not limit the material of the proximal elastic sleeve.

[0240] For example, the proximal elastic sleeve can be an elastic ball, so that the outer surface of the elastic ball can be uniformly compressed and deformed by the circumferential end wall of the proximal connector 510, thereby making the inner wall of the second through hole and the force at each position of the circumference of the pulling wire 100 the same, thus ensuring that the pulling wire 100 is subjected to uniform force and will not tilt.

[0241] Of course, in some examples, the proximal elastic sleeve can also be a square or irregular sleeve structure. The embodiments of this application do not limit the shape of the proximal elastic sleeve.

[0242] The following example, using the intestine as the first tissue and the gallbladder as the target tissue, illustrates the implantation process of the anchoring device:

[0243] The distal connector 410 of the distal locking structure 400 is fixed on the fixation part 21 at the proximal end of the puncture needle 20, and the distal fixation part 421 is fixed to the distal connector 410. The drive tube 300 is locked in the distal connector 410. 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. Then, the distal fixation part 421 is released from the distal connector 410, and the drive tube 300 is released from the distal connector 410.

[0244] The proximal fixing part 521 is fixed to the proximal connector 510 to tighten the traction line 100 and push the drive tube 300 into the needle channel of the puncture needle 20 so as to push the traction line 100 and the anchor 200 at the distal end of the traction line 100 from the proximal end of the puncture needle 20 into the needle channel of the puncture needle 20.

[0245] Continue pushing the drive tube 300 to advance the anchor 200 toward the distal end of the puncture needle 20 until the anchor 200 extends beyond 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 drive tube 300. The proximal fixing part 521 is removed from the proximal connector 510 to release the pull line 100. Then, pulling the pull line 100 can cause the anchor 200 to flip to the anchoring angle.

[0246] The puncture needle 20 is retracted so that it is retracted into the endoscope's forceps channel, and the drive tube 300 is retracted into the puncture needle 20; then the distal fixing part 421 is fixed to the distal connector 410 to lock the drive tube 300 at the proximal end of the puncture needle 20, and the drive tube 300 is withdrawn from the puncture needle 20, leaving the traction wire 100 in the forceps channel;

[0247] Pulling the traction line 100, for example, can be done from the proximal end of the traction line 100, so that the anchor 200 first adheres to the inner wall of the gallbladder, and then the gallbladder is pulled to the outer wall of the intestine, thus achieving the anchoring of the gallbladder.

[0248] Figure 9 yes Figure 3 A schematic diagram showing the fit between the mid-to-proximal locking structure and the limiting component. (Refer to...) Figure 3 and Figure 9 As shown, in some examples, the anchor 10 may also include a limiting member 600.

[0249] The limiting member 600 is selectively disposed between the drive tube 300 and the puncture needle 20. In other words, the limiting member 600 can be located between the drive tube 300 and the puncture needle 20, or it can be detached from the drive tube 300 and the puncture needle 20. For example, the limiting member 600 may be disposed between the drive tube 300 and the puncture needle 20 in one state, and detached from the drive tube 300 and the puncture needle 20 in another state.

[0250] When the anchor 200 is located inside the puncture needle 20 and there is a preset distance between it and the distal end of the puncture needle 20, the limiting member 600 is respectively engaged with the drive tube 300 and the puncture needle 20 to restrict the movement of the drive tube 300 in the puncture needle 20.

[0251] During the movement of the anchor 200 from the first position toward the distal end of the puncture needle 20, the limiting member 600 disengages from the drive tube 300 and the puncture needle 20; wherein, the first position is the position of the anchor 200 when there is a preset distance between it and the distal end of the puncture needle 20.

[0252] For example, the limiting member 600 may include an elastic buckle and a slot, wherein the elastic buckle is disposed on one of the drive tube 300 and the puncture needle 20, and the slot is disposed on the other of the drive tube 300 and the puncture needle 20.

[0253] When the anchor 200 is located inside the puncture needle 20 and there is a preset distance between it and the distal end of the puncture needle 20, the elastic buckle engages in the slot to restrict the movement of the drive tube 300 in the puncture needle 20.

[0254] During the movement of the anchor 200 from the first position toward the distal end of the puncture needle 20, the elastic buckle disengages from the slot, and the drive tube 300 can continue to move along the puncture needle 20.

[0255] For example, the preset distance can be 0, meaning the distal end of the anchor 200 is flush with the distal end of the puncture needle 20; the preset distance can also be any value less than or equal to 10 mm, such as 2 mm, 4 mm, 7 mm, or 10 mm. Of course, the preset distance is only used to express a distance relatively close to the distal end of the puncture needle 20, and the embodiments of this application do not limit the preset distance.

[0256] By setting a limiting member 600 between the drive 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 drive tube 300 can be stopped to indicate to the operator that the anchor 200 is about to reach or has already reached the distal end of the puncture needle 20. Then, the advancing speed of the drive tube 300 can be controlled so that the anchor 200 slowly approaches or extends from the distal end of the puncture needle 20. This ensures that when the proximal end of the anchor 200 approaches or reaches the distal end of the puncture needle 20, the traction line 100 can be pulled back in time, allowing the anchor 200 to flip in time. This avoids the anchor 200 extending too far from the distal end of the puncture needle 20, which would affect the flipping of the anchor 200 or cause damage to the target tissue.

[0257] In addition, when the limiting member 600 does not lock the drive tube 300 onto the puncture needle 20, that is, before the anchor 200 reaches the first position, the advancement speed of the drive tube 300 can be accelerated to improve the implantation efficiency of the anchor 10.

[0258] In a specific configuration, the limiting member 600 can be positioned at any location along the length of the drive tube 300. For example, the limiting member 600 can be positioned between the proximal end of the drive tube 300 and the proximal end of the puncture needle 20, and selectively protrude from the side wall of the drive tube 300.

[0259] At least when the anchor 200 is located inside the puncture needle 20 and at a predetermined distance from the distal end of the puncture needle 20, the limiting member 600 protrudes from the side wall of the drive tube 300, so that the proximal end of the drive tube 300 is blocked by the limiting member 600 on the proximal side of the puncture needle 20. For example, when the anchor 200 is located inside the puncture needle 20 and at a predetermined distance from the distal end of the puncture needle 20, the limiting member 600 protrudes from the side wall of the drive tube 300; or, when the distance between the anchor 200 and the distal end of the puncture needle 20 is greater than the predetermined distance, the limiting member 600 protrudes from the side wall of the drive tube 300, that is, the limiting member 600 can protrude from the side wall of the drive tube 300 until the anchor 200 moves from the proximal end of the puncture needle 20 to the first position.

[0260] For example, the limiting member 600 is disposed between the proximal locking structure 500 and the distal locking structure 400, and when the limiting member 600 protrudes from the side wall of the drive tube 300, when the limiting member 600 moves with the drive tube 300 to one end of the distal locking structure 400, the limiting member 600 can be blocked on one side of the distal locking structure 400 (i.e. the side facing the proximal locking structure 500).

[0261] It is understood that, during setup, the outer diameter of the drive tube 300 can be adapted to the first through hole 423 of the distal locking structure 400. When the limiting member 600 protrudes from the side wall of the drive tube 300, the radial distance between the outer end of the limiting member 600 and the drive tube 300 is greater than the radius of the first through hole 423, thereby causing the limiting member 600 to be blocked on one side of the distal locking structure 400, that is, the proximal end of the drive tube 300 is blocked on the proximal side of the puncture needle 20 to prevent the drive tube 300 from continuing to advance along the puncture needle 20.

[0262] Furthermore, during the movement of the anchor 200 from the first position toward the distal end of the puncture needle 20, the limiting member 600 disengages from the side wall of the drive tube 300. In other words, when the limiting 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 limiting member 600 disengages from the side wall of the drive tube 300, causing the drive tube 300 to continue to slowly advance into the puncture needle 20, causing the anchor 200 to extend out of the distal end of the puncture needle 20 and flip over.

[0263] In some examples, the limiting member 600 may be an elastic protrusion that extends out of the side wall of the drive tube 300 and retracts into the drive tube 300. For example, a receiving groove may be formed on the drive tube 300, and the distal end of the elastic protrusion may be fixed within the receiving groove. In its natural state, the elastic protrusion protrudes from the receiving groove, and when the elastic protrusion is subjected to lateral or vertical pressure, it may retract into the receiving groove.

[0264] For example, when the anchor 200 is inside the puncture needle 20 and before reaching the first position, the elastic protrusion protrudes from the side wall of the drive tube 300 so that when the anchor 200 reaches the first position, the elastic protrusion blocks one side of the distal locking structure 400, and then continues to push the drive tube 300 into the puncture needle 20. The elastic protrusion retracts into the receiving groove under the pressure of the inner wall of the distal locking structure 400, so that the drive tube 300 is smoothly pushed into the puncture needle 20.

[0265] In other examples, the limiting member 600 can be detachably mounted on the drive tube 300. When the anchor 200 moves from the first position toward the distal end of the puncture needle 20, the limiting member 600 is configured to be detached from the drive tube 300. This simplifies the assembly process between the limiting member 600 and the drive tube 300, making the process of the limiting member 600 disengaging from the side wall of the drive tube 300 more convenient and faster. Furthermore, the integrity of the drive tube 300 itself can be maintained without compromising its structural integrity, thus preserving its strength.

[0266] For example, the limiting member 600 may be a limiting clamp that is clamped on the drive tube 300. When the anchor 200 reaches the first position and continues to move toward the distal end of the puncture needle 20, the limiting clamp can be removed from the drive tube 300 so that the drive tube 300 continues to advance along the puncture needle 20.

[0267] In some examples, the limiting member 600 may be located at the end of the anchor 10's proximal locking structure 500 facing the distal locking structure 400. In this example, the preset distance is 0, meaning that 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 limiting member 600 is equal to the maximum length of the anchor 200 extending beyond the distal end of the puncture needle 20.

[0268] Thus, when the limiting member 600, along with the drive tube 300, reaches the end of the distal locking structure 400 facing the proximal locking structure 500, the proximal locking structure 500 and the distal locking structure 400 are just separated by the limiting member 600. At this time, the distal end of the anchor 200 is flush with the distal end of the puncture needle 20. After removing the limiting member 600, the drive tube 300 continues to advance towards the puncture needle 20 until the proximal locking structure 500 moves to the end of the distal locking structure 400. The movement distance of the drive tube 300 is the length of the limiting member 600, and the movement distance of the anchor 200 is also the length of the limiting member 600, thereby making the length of the anchor 200 extending beyond the distal end of the puncture needle 20 the length of the limiting member 600.

[0269] By setting the limiting member 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 beyond the distal end of the puncture needle 20 based on the length of the limiting member 600, thereby providing a reliable basis for the pullback distance of the subsequent pull line 100.

[0270] For example, the length of the limiting member 600 can be equal to the length of the anchor 200, such 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 beyond the distal end of the puncture needle 20 is equal to the entire length of the anchor 200. In this way, when the proximal locking structure 500 moves to the end of the distal locking structure 400, the proximal fixing part 521 can be released from the proximal connector 510 to release the pull line 100, and then the pull line 100 can be pulled back to make the anchor 200 flip.

[0271] Figure 10 This is a structural schematic diagram of one type of anchor provided in an embodiment of this application. Figure 11 yes Figure 10 A cross-sectional view of the anchor and tie wire assembly. Figure 12 yes Figure 11 Sectional view of the middle anchor. Figure 13 yes Figure 6 A magnified view of a section at point C. (Refer to...) Figures 10 to 13 As shown, in some examples, a limiting groove 210 and a side groove 210b communicating with the limiting groove 210 can be formed on the anchor 200. Both the limiting groove 210 and the side groove 210b extend along the length direction of the anchor 200, and one end of both the limiting groove 210 and the side groove 210b penetrates through the proximal end of the anchor 200. The length direction of the anchor 200 can be referenced... Figures 10 to 13 As shown in the direction of b.

[0272] It is understandable that the side groove 210b can be an opening of the limiting groove 210 on the side wall of the anchor 200. For ease of description, the two opposite ends of the limiting groove 210 along the length direction can be referred to as the first end and the second end, respectively. The end that passes through the near end of the anchor 200 is called the first end, and the end facing away from the near end of the anchor 200 is called the second end.

[0273] If the first end of the limiting groove 210 extends to the near end of the anchor 200, it indicates that the first end of the limiting groove 210 has an end slot, which is connected to the side slot 210b and has a different orientation.

[0274] When the proximal end of the anchor 200 is located at the puncture needle 20, at least a portion of the pull line 100 is located within the limiting groove 210, extends out of the anchor 200 from the end opening of the limiting groove 210, and extends into the drive tube 300. During the process of the pull line 100 pulling the anchor 200 to flip, a portion of the pull line 100 detaches from the anchor 200 from the side opening 210b.

[0275] For example, when fixing, the pull line 100 can be fixed at any position within the limiting groove 210, or at a position in the anchor 200 other than the limiting groove 210, as long as part of the pull line 100 is contained within the limiting groove 210.

[0276] In this embodiment, a limiting groove 210 is provided on the anchor 200 to restrict the pull line 100 in the radial direction of the anchor 200, so that when the anchor 200 is inside the puncture needle 20, the pull line 100 is located inside the anchor 200, which plays a good role in storing the pull line 100 and avoids the pull line 100 from rubbing against the puncture needle 20 and accumulating.

[0277] In other examples, a mounting hole perpendicular to the length direction can be formed within the anchor 200, such that the distal end of the pull wire 100 is fixed within the anchor 200 and extends through the mounting hole to the outside of the anchor 200. When the proximal end of the anchor 200 is located at the puncture needle 20, the pull wire 100 extends along the outer wall of the anchor 200 into the drive tube 300.

[0278] Reference Figures 10 to 13As shown, in order to achieve better flipping of the anchor 200, in some examples, the limiting groove 210 has a clearance opening 240 at one end (i.e., the first end) near the anchor 200. One end 240a of the clearance opening 240 extends to the side opening 210b, and the other end 240b extends to the side of the limiting groove 210 opposite to the side opening 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.

[0279] For ease of description, the portion of the limiting groove 210 with the clearance opening 240 in the length direction can be referred to as the first part, and the other portions of the limiting groove 210 in the length direction can be referred to as the second part. The angle at which the groove wall of the second part of the limiting groove 210 extends circumferentially around the axis l is called the second angle, and the angle at which the groove wall of the first part extends circumferentially around the axis l is called the first angle.

[0280] The first angle and the second angle are both less than 360°, so that a side groove 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 less than the second angle, so that the first end of the limiting groove 210 forms a clearance opening 240.

[0281] In some examples, the first angle can decrease in the direction from the second part of the limiting groove 210 to the proximal end of the anchor 200, and the decreasing slope is always equal, so that the end face of the clearance opening 240 communicating with the side wall groove forms an inclined plane. Of course, in other examples, the first angle decreases at different slopes in the direction from the second part of the limiting groove 210 to the proximal end of the anchor 200, for example, the decreasing slope gradually increases, so that the end face of the clearance opening 240 communicating with the side wall groove forms an arc-shaped surface.

[0282] In some examples, the first angle remains unchanged in the direction from the second part of the limiting groove 210 to the near end of the anchor 200. In this case, the end face of the clearance opening 240 communicating with the side wall groove is a vertical surface perpendicular to the side groove, and the clearance opening 240 has a horizontal surface perpendicular to this vertical surface; that is, the entire end face of the clearance opening 240 is a right-angled surface. This application embodiment does not limit the shape of the end face of the clearance opening 240.

[0283] Furthermore, the other end of the clearance opening 240 extends to the side of the limiting groove 210 opposite to the side opening 210b along the axis l. That is, the first angle at the end of the first part of the limiting groove 210 near the anchor 200 is less than 180°. Specifically, the end wall of the first part of the limiting groove 210 near the anchor 200 extends circumferentially around the axis l to a plane lower than the plane containing the axis l. In other words, the other end of the clearance opening 240 and the axis l of the limiting groove 210 have a first distance in the radial direction of the anchor 200 (refer to...). Figure 13(As shown in L). It can be understood that the plane containing axis l is set relative to the bottom of the tank 210a.

[0284] By forming a clearance opening 240 at the first end of the limiting groove 210, and extending one end of the clearance opening 240 to the side opening 210b and the other end to the side of the axis l of the limiting groove 210 facing away from the side opening 210b, the proximal end of the anchor 200, except for the clearance opening 240, abuts against the distal end of the drive tube 300, and the end of the clearance opening 240 away from the side opening 210b serves as the turning fulcrum P of the anchor 200.

[0285] When the proximal end of the anchor 200 reaches or is about to reach the distal end of the puncture needle 20, the pulling line 100 is pulled, so that the flipping fulcrum P will be resisted by the distal end of the drive tube 300. Since the flipping fulcrum P and the axis l of the limiting groove 210 have a first distance, after the anchor 200 is pulled by the pulling line 100, the flipping fulcrum P is resisted by the distal end of the drive tube 300, thereby forming a flipping torque, so that the anchor 200 can achieve better flipping.

[0286] In some examples, there is a gap between the other end of the clearance 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 clearance opening 240 does not extend to the bottom 210a of the limiting groove 210, so that the near end of the anchor 200 leaves a portion of the end face perpendicular to the axis l, so that the far end of the drive tube 300 can stably abut against the end slot side of the limiting groove 210 without entering the limiting groove 210 or swaying at the end slot side of the limiting groove 210. This allows the drive tube 300 to push the anchor 200 to move stably along the puncture needle 20, and allows the drive tube 300 to stably abut against the flipping fulcrum P, and pulls the anchor 200 to flip stably under the pull of the traction line 100.

[0287] The bottom 210a of the limiting groove 210 is positioned opposite to the side opening 210b.

[0288] For example, the distance between the other end of the clearance opening 240 and the bottom 210a of the limiting groove 210 can be less than or equal to 5mm. For example, the distance can be a suitable value such as 1mm, 3mm or 5mm. This application embodiment does not limit the distance.

[0289] In some examples, when the proximal end of the anchor 200 is located at the puncture needle 20, the traction line 100 can extend along the axis l of the limiting groove 210, so that the traction line 100 pulls the anchor 200 along the axis l of the limiting groove 210, causing the anchor 200 to flip.

[0290] In other examples, when the proximal end of the anchor 200 is located at the puncture needle 20, the traction wire 100 may be located between the axis l of the limiting groove 210 and the side groove 210b.

[0291] For ease of description, the side of the limiting groove 210 facing the side opening 210b along the axis l can be designated as the first side, and the side of the limiting groove 210 facing the flipping fulcrum P (or the bottom of the groove 210a) along the axis l can be designated as the second side. The pull line 100 is set on the first side of the limiting groove 210 to deviate from the second side, that is, from the side of the flipping fulcrum P. In this way, the pull line 100 pulls the anchor 200 along the side away from the flipping fulcrum P, which can increase the flipping torque of the anchor 200, so that the anchor 200 can achieve better flipping under the pull of the pull line 100 and the push of the drive tube 300.

[0292] In some examples, the distal end of the pull wire 100 can be fixed at any position in the limiting groove 210, for example, it can be fixed inside the second end of a single limiting groove 210.

[0293] Reference Figure 10 As shown, in some other examples, a wire-laying cavity 220 may be formed on the anchor 200;

[0294] The wire release cavity 220 and the groove cavity of the limiting groove 210 are connected through the through hole 210c. The distal end of the pull line 100 is restricted in the wire release cavity 220, and the pull line 100 extends from the through hole 210c into the limiting groove 210.

[0295] For example, the wire release cavity 220 and the limiting groove 210 can be spaced apart along the length direction of the anchor 200, so that the portion of the pull line 100 located inside the anchor 200 extends along the length direction of the anchor 200.

[0296] The through hole 210c is located within the anchor 200 and extends along the length of the anchor 200. The through hole 210c better restricts the radial position of the pull wire 100 on the anchor 200 and simplifies the mating structure between the anchor 200 and the pull wire 100. For example, the through hole 210c can be positioned on the axis l of the limiting groove 210, i.e., the axis l of the through hole 210c coincides with the axis l of the limiting groove 210. Thus, when the distal end of the pull wire 100 is fixed within the 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 positioned on the extension area of ​​the first side of the limiting groove 210, the pull wire 100 is confined to the extension area of ​​the first side of the limiting groove 210.

[0297] In some examples, the distal end of the pull wire 100 may be fixed to the wire release cavity 220 by means of bonding or welding.

[0298] In other examples, the distal end of the pull wire 100 is provided with a first limiting portion 110, which is engaged within the wire release cavity 220 to restrict the distal end of the pull wire 100 within the wire release cavity 220.

[0299] Understandably, the width of the first limiting part 110 is greater than the opening width of the wire feeding cavity 220, causing the first limiting part 110 to be engaged within the wire feeding cavity 220, thus confining the distal end of the pull wire 100 within the wire feeding cavity 220 and preventing it from slipping out of the slot in the wire feeding cavity 220. Furthermore, the outer contour of the first limiting part 110 is larger than the first opening of the through hole 210c, preventing the first limiting part 110 from entering the limiting groove 210 through the through hole 210c, ensuring that the first limiting part 110, i.e., the distal end of the pull wire 100, is confined within the wire feeding cavity 220.

[0300] In some examples, the first limiting part 110 can move within the wire feeding cavity 220 or be fixed within the wire feeding cavity 220; the embodiments of this application do not limit this.

[0301] For example, the first limiting portion 110 may be integral with the distal end of the pull line 100. For instance, the first limiting portion 110 may be a knot at the distal end of the pull line 100. In some examples, the first limiting portion 110 may also be a block-shaped or spherical limiting structure fixed to the distal end of the pull line 100.

[0302] In some examples, when the anchor 200 is flipped to the anchoring position, the pull line 100 is disengaged from the anchor 200 at the center of the anchor 200 along its length.

[0303] It is understandable that when anchor 200 flips to the anchoring position, part of the pull line 100 is inside anchor 200, and another part is detached from anchor 200, that is, the other part is outside anchor 200. Therefore, the position where pull line 100 detaches from anchor 200 (refer to...) Figure 7 (M) refers to the position on the anchor 200 corresponding to the turning point of the part of the pull line 100 inside the anchor 200 and the part outside the anchor 200.

[0304] By setting the position where the pull line 100 leaves the anchor 200 at the center of the anchor 200 along its length, the anchor 200 will not deviate from its anchoring position during the pulling of the pull line 100, that is, the angle between the anchor 200 and the pull line 100 will not deviate from the anchoring angle. This ensures that the anchor 200 can stably adhere to the inner wall of the target tissue 40 during the pulling of the pull line 100 without causing damage to the target tissue 40.

[0305] It is understandable that when the anchor 200 is flipped to the anchoring position, the position where the pull line 100 leaves 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 leaves the anchor 200 is the center of the anchor 200.

[0306] In some examples, the distal end of the pull line 100 can be directly fixed to the center of the anchor 200, for example, it can be fixed to the second end of the limiting groove 210.

[0307] In other examples, the distal end of the pull line 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 pull line 100 may be confined within the aforementioned release cavity 220. Since the release cavity 220 is located on the side of the limiting groove 210 facing the distal end of the anchor 200, for example, if the 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 pull line 100 may deviate 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 pull line 100 may extend towards the proximal end of the anchor 200.

[0308] Reference Figure 11 To the diagram and Figure 12 As shown, in some examples, an installation channel 260 is formed on the anchor 200, one end of which communicates with a through hole 210c, and the other end of which extends to the distal end of the anchor 200. For example, the installation 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 installation channel 260 and the limiting groove 210, and connects the installation channel 260 and the limiting groove 210.

[0309] 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 the one end of the end cap 250 and the through hole 210c.

[0310] For example, the through hole 210c has a first opening and a second opening that are arranged opposite to each other along the length of the anchor 200. The first opening faces the limiting groove 210 and is connected to the limiting groove 210. 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.

[0311] By providing an installation channel 260 on the anchor 200, and the installation channel 260 extending to the far end of the anchor 200, and providing an end cap 250 at the far end of the anchor 200 to form a wire-laying cavity 220, the structural configuration of the anchor 200 is simplified, making it easier for the far end of the pull line 100 to be assembled into the wire-laying cavity 220.

[0312] Figure 14 This is a schematic diagram of another anchor structure provided in one embodiment of this application. (Refer to...) Figure 14 As shown, in some other examples, the sidewall of the anchor 200 is recessed inward with a line-laying groove 220a, and the groove cavity of the line-laying groove 220a is configured as a line-laying cavity 220.

[0313] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An anchor, characterized in that, include: The tension wire is a flexible component; An anchor is attached to the far end of the pull line and can be pulled by the pull line; The anchor is configured to move along the puncture needle and to flip as it extends beyond the distal end of the puncture needle to form an angle with the traction line, so that the anchor stops against the inner wall of the target tissue. The anchor has a limiting groove and a side groove communicating with the limiting groove. Both the limiting groove and the side groove extend along the length direction of the anchor, and one end of the limiting groove and the side groove penetrates 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 traction line is located within the limiting groove, and during the process of the traction line pulling the anchor to flip, a portion of the traction line detaches from the anchor from the side groove.

2. The anchor of claim 1, wherein The limiting groove has a clearance opening at one end near the anchor. One end of the clearance opening extends to the side groove opening, and the other end of the clearance opening extends to the side of the limiting groove opposite to the side groove opening.

3. The anchor of claim 2, wherein, There is a gap between the other end of the clearance opening and the bottom of the limiting groove; The bottom of the limiting groove is positioned opposite to the side groove opening.

4. The anchor of claim 2, wherein, When the proximal end of the anchor is located at the puncture needle, the traction line extends along the axis of the limiting groove; or, When the proximal end of the anchor is located at the puncture needle, the traction line is located between the axis of the limiting groove and the side groove.

5. The anchor of claim 1, wherein, A line-laying cavity is formed on the anchor; The wire feeding cavity is connected to the cavity of the limiting groove through a through hole. The distal end of the pull wire is confined within the wire feeding cavity, and the pull wire extends from the through hole into the limiting groove.

6. The anchor of claim 5, wherein, The distal end of the pull wire has a first limiting portion, which is embedded in the wire release cavity to restrict the distal end of the pull wire within the wire release cavity.

7. The anchor of claim 5, wherein, The anchor has an inwardly recessed line-laying groove on its sidewall, and the groove cavity of the line-laying groove is configured as the line-laying cavity.

8. The anchor according to claim 5, characterized in that, An installation channel is formed inside the anchor, one end of which communicates with the through hole, and the other end of which extends to the far end of the anchor. The anchor has an end cap at its distal end, which is embedded in the mounting channel from the distal end of the anchor, with one end spaced apart from the through hole. The wire feeding cavity is formed between one end of the end cap and the through hole.

9. The anchor of claim 1, wherein, The anchor also includes: A distal locking structure is configured to fix the proximal end of the puncture needle. A first receiving channel is formed within the distal locking structure. The first receiving channel communicates with the needle track of the puncture needle. An anchor is located within the first receiving channel and is configured to enter the needle track of the puncture needle through the first receiving channel.

10. An anchoring device, characterized by include: The distal end of the puncture needle is configured to extend into the target tissue. Anchor as claimed in any one of claims 1-9; The anchor of the anchor moves along the puncture needle to penetrate into the target tissue.

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