Wire anchors and wire anchor systems

Abstract

This invention provides a suture anchor and a suture anchor system. The suture anchor includes a balloon anchoring assembly. The balloon anchoring assembly includes an insert and a self-expanding balloon body. When the balloon body is placed inside a delivery tube, it is in a contracted state due to the restriction of the delivery tube. When the balloon body is dislodged from the delivery tube and implanted into a predetermined object, the balloon body expands outward based on its self-expanding property, transitioning from the contracted state to an expanded state to anchor itself in the predetermined object. The balloon body includes a plurality of mesh holes. When the balloon body is in the expanded state, the insert is used to embed the predetermined object, and the mesh holes allow the predetermined object to enter. With this configuration, the balloon anchoring assembly can be reliably and securely fixed in the patient's bone, meeting the clinical needs of different patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a wire anchor and a wire anchor system. Background Technology

[0002] Tendon and ligament injuries around joints are common orthopedic injuries. Clinically, suture anchors are often used to fix the injured tendon stump to the bone tissue in order to restore the normal structure of the tendon and joint function, and to achieve the final fixation through tendon-bone healing.

[0003] The process of tendon-bone healing requires a certain contact area and strong contact stability between the rough surfaces of the tendon and the bone end. Therefore, the fixation strength of the suture anchor within the bone is the key and foundation for surgical success.

[0004] Most existing suture anchors involve creating a threaded structure on the anchor body. A channel with a diameter slightly smaller than the anchor body is pre-drilled, and the anchor body is then screwed in or directly driven into the bone to achieve fixation. However, the stability of the pressure exerted by the threads on the bone tissue is limited. Clinically, loosening or pull-out of the anchor body after implantation, leading to fixation failure and surgical failure, is common, especially in cases of bone loss or osteoporosis, and is more likely to occur in joints with large range of motion and strong tendons, such as the shoulder and elbow. Summary of the Invention

[0005] The purpose of this invention is to provide a wire anchor and a wire anchor system to solve the problem that existing wire anchors are prone to loosening and pull-out.

[0006] To solve the above-mentioned technical problems, the present invention provides a suture anchor, which includes a balloon anchoring assembly; the balloon anchoring assembly includes a self-expanding balloon body and an embedding portion;

[0007] When the balloon body is placed inside the delivery tube, it is in a contracted state due to the restriction of the delivery tube; when the balloon body is dislodged from the delivery tube and implanted into the predetermined object, the balloon body expands outward based on self-expansion, changing from the contracted state to the expanded state, so as to anchor itself in the predetermined object.

[0008] The balloon body includes a plurality of mesh holes; when the balloon body is in the expanded state, the embedding part is used to embed the predetermined object, and the mesh holes allow the predetermined object to enter.

[0009] Optionally, the plurality of mesh holes are formed by multiple mesh rods intersecting and connecting with each other, and / or the plurality of mesh holes are formed through a hollowed-out balloon body.

[0010] Optionally, the embedded portion includes at least one of an edge, a corner, and a cone angle disposed on the grid bar and / or on the adjacent portion of the grid hole.

[0011] Optionally, the embedding portion includes a rod passing through the mesh hole, wherein the cross-sectional shape of the rod is adapted to the inner contour shape of the mesh hole.

[0012] Optionally, the rod extends through the balloon body.

[0013] Optionally, when the balloon body is in the expanded state, the mesh holes are at least one of rhombus, parallelogram, rectangle, circle, and ellipse.

[0014] Optionally, the suture anchor further includes a connecting portion connected to the balloon body along the axial direction of the balloon body. The connecting portion is used to connect with a pusher to drive the balloon body out of the delivery tube and implant it into a predetermined object.

[0015] Optionally, the connecting portion extends along the axial direction of the balloon body and has a through hole that is angled to the axial direction of the balloon body.

[0016] Optionally, the connecting portion has a receiving cavity extending axially along the balloon body, the receiving cavity communicating with the suture hole, and the cross-sectional dimension of the receiving cavity being not less than the cross-sectional dimension of the suture, so as to allow the suture to be received therein.

[0017] Optionally, the balloon body includes a prismatic segment arranged along its own axial direction, and when the balloon body is in the expanded state, the edges of the prismatic segment are configured as the embedding portion.

[0018] To address the aforementioned technical problems, the present invention also provides a suture anchor system, which includes the suture anchor as described above, and further includes an operating tool. The operating tool includes a delivery tube arranged along its own axial direction and a pusher movably inserted through the delivery tube. The delivery tube is used to load the balloon body, and the pusher is used to drive the balloon body out of the delivery tube and implant it into a predetermined object.

[0019] In summary, in the suture anchor and suture anchor system provided by the present invention, the suture anchor includes a balloon anchoring assembly; the balloon anchoring assembly includes an embedding portion and a self-expanding balloon body; when the balloon body is placed inside the delivery tube, it is in a contracted state due to the restriction of the delivery tube; when the balloon body is dislodged from the delivery tube and implanted into a predetermined object, the balloon body expands outward based on its self-expansion, changing from the contracted state to an expanded state, to anchor itself in the predetermined object; wherein, the balloon body includes a plurality of mesh holes; when the balloon body is in the expanded state, the embedding portion is used to embed the predetermined object, and the mesh holes allow the predetermined object to enter.

[0020] This configuration allows the balloon to transition from a contracted to an expanded state when it is dislodged from the delivery tube and implanted into a predetermined target (such as the patient's bone). This self-expanding property of the balloon allows it to anchor itself within the target. Furthermore, the balloon adapts to the patient's bone structure during this process; its self-expanding property results in smaller expansion for harder bone and larger expansion for more porous bone, ensuring reliable and stable fixation and meeting the clinical needs of different patients. Additionally, the implantation of the suture anchor is quick and simple, requiring only the balloon to be pushed out of the delivery tube and inserted into the patient's bone. Unlike threaded fixation, it expands instantly to achieve fixation. Moreover, the embedding portion can embed into the bone, further enhancing the connection strength and reliability, while the mesh openings allow bone to enter, promoting inward bone fusion. Attached Figure Description

[0021] Those skilled in the art will understand that the accompanying drawings are provided to better understand the invention and do not constitute any limitation on the scope of the invention. Wherein:

[0022] Figure 1 This is a schematic diagram of a wire anchor system according to an embodiment of the present invention, wherein the balloon body is located inside the delivery tube;

[0023] Figure 2 yes Figure 1 A cross-sectional view along the axial direction of the wire anchor system shown.

[0024] Figure 3 This is a schematic diagram of a suture anchor according to an embodiment of the present invention, wherein the balloon body is in a contracted state;

[0025] Figure 4 This is a cross-sectional view of the operating tool along the axial direction according to an embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of a wire anchor system according to an embodiment of the present invention, wherein the balloon body is pushed out of the delivery tube;

[0027] Figure 6 This is a schematic diagram of a first preferred example of a suture anchor according to an embodiment of the present invention, wherein the balloon body is in a state of maximum expansion;

[0028] Figure 7 This is a schematic diagram of a second preferred example of a wire anchor according to an embodiment of the present invention;

[0029] Figure 8 yes Figure 7 A magnified view of the anchor bolt with wire shown;

[0030] Figure 9 This is a schematic diagram of a third preferred example of a wire anchor according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of a fourth preferred example of a wire anchor according to an embodiment of the present invention;

[0032] Figure 11 yes Figure 10 A schematic diagram of another perspective of the anchor bolt with a wire.

[0033] Figure 12 This is a schematic diagram of the fifth preferred example of a wire anchor according to an embodiment of the present invention.

[0034] In the attached image:

[0035] 1-Anchor pin with suture; 10-Balloon anchoring assembly; 110-Balloon body; 111-Grid rod; 112-Grid hole; 113-Pyramidal segment; 120-Embedding part; 121-Rod; 13-Suture; 14-Connecting part; 141-Threading hole; 142-Accommodation cavity; 2-Operating tool; 21-Delivery tube; 22-Pushing component; 23-Handle; 230-Inner hole; 231-Side hole; 24-Push button. Detailed Implementation

[0036] To make the objectives, advantages, and features of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the embodiments of this invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and may sometimes use different scales.

[0037] As used herein, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; and the term “at least two” is generally used to mean “two or more”. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature; “one end” and “the other end,” and “proximal end” and “distal end” generally refer to two corresponding parts, which include not only endpoints. In manual or hand-operated applications, the terms “proximal end” and “distal end” are defined herein relative to the operator, such as a surgeon or clinician. The term “proximal end” refers to the position of the element closer to the operator, and the term “distal end” refers to the position of the element further away from the operator. Furthermore, the terms "installed," "connected," and "attached," as used in this invention, and the term "set" on one element from another, should be interpreted broadly. They generally only indicate a connection, coupling, cooperation, or transmission relationship between the two elements, which can be direct or indirect through an intermediate element. They should not be construed as indicating or implying a spatial relationship between the two elements, meaning one element can be located inside, outside, above, below, or to one side of another element, unless otherwise explicitly stated. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Additionally, directional terms such as above, below, up, down, upward, downward, left, and right are used relative to exemplary embodiments as shown in the figures, with upward or upper directions pointing towards the top of the corresponding figure, and downward or lower directions pointing towards the bottom of the corresponding figure.

[0038] The purpose of this invention is to provide a wire anchor and a wire anchor system to solve the problem of existing wire anchors being prone to loosening and pull-out. The following description refers to the accompanying drawings.

[0039] Please refer to Figures 1 to 12 This invention provides a suture anchor 1, which includes a balloon anchoring assembly 10; the balloon anchoring assembly 10 includes an embedding portion 120 and a self-expanding balloon body 110; when the balloon body 110 is placed inside a delivery tube 21, it is in a contracted state due to the restriction of the delivery tube 21 (e.g., Figure 1 and Figure 2(As shown); when the balloon body 110 is dislodged from the delivery tube 21 and implanted into the predetermined object, the balloon body 110 expands outward based on self-expansion, changing from the contracted state to the expanded state, so as to anchor itself in the predetermined object (see reference). Figure 5 (As shown); wherein, the balloon body 110 includes a plurality of mesh holes 112, and when the balloon body 110 is in the expanded state, the embedding part 120 is used to embed the predetermined object, and the mesh holes 112 allow the predetermined object to enter. It should be noted that allowing the predetermined object to enter through the mesh holes 112 can be understood as follows: after the balloon body 110 expands and compresses relative to the predetermined object, a portion of the predetermined object is directly squeezed into the mesh holes 112; or it can be understood as the predetermined object growing into the mesh holes 112 after the balloon body 110 is implanted.

[0040] Based on the suture anchor 1 described above, this embodiment of the invention also provides a suture anchor system, which includes the suture anchor 1 and an operating tool 2 as described above. The operating tool 2 includes a delivery tube 21 arranged along its own axial direction and a pusher 22 movably inserted through the delivery tube 21; the delivery tube 21 is used to load the balloon body 110 of the suture anchor 1, and the pusher 22 is used to drive the balloon body 110 out of the delivery tube 21 and implant it into a predetermined object.

[0041] For ease of explanation, the following surgical application scenario will be described using the patient's bone as the predetermined object. It should be noted that in other application scenarios, such as simulation or training, a bone prosthesis model can also be used as the predetermined object. Those skilled in the art can make corresponding substitutions and understandings, and should not understand the predetermined object as simply the patient's bone.

[0042] Please refer to Figure 1 , Figure 2 and Figure 4 In an alternative example, the operating tool 2 further includes a handle 23 and a push button 24, the handle 23 having an axially extending inner bore 230, and the proximal end of the delivery tube 21 ( Figure 2 The right end of the conveying tube 21 is fixedly connected to the handle 23, and the inner cavity of the conveying tube 21 is in communication with the inner hole 230. The pusher 22 is movably inserted into the inner cavity and the inner hole 230 of the conveying tube 21 along the axial direction. The handle 23 has a side hole 231 communicating with the inner hole 230. The push button 24 is movably disposed in the side hole 231 along the axial direction of the handle 23, and the push button 24 is connected to the pusher 22. Thus, when the handle 23 is pushed, it will drive the pusher 22 to move along the axial direction of the conveying tube 21.

[0043] Furthermore, after being compressed, the balloon body 110 can be switched to a contracted state and loaded into the delivery tube 21, such as... Figure 2and Figure 3 As shown. The balloon body 110 is preferably mounted at the distal end of the delivery tube 21. Figure 2 The balloon body 110 is located near the left end of the delivery tube 21. As the pusher 22 moves distally, it drives the balloon body 110 to dislodge from the delivery tube 21. In use, a hole is first drilled in the patient's bone. Then, the distal end of the delivery tube 21, carrying the balloon body 110, is inserted into the drilled hole in the bone. Pushing the push button 24 and using the pusher 22, the balloon body 110 is dislodged from the delivery tube 21. At this point, the balloon body 110 is no longer constrained by the delivery tube 21 and, due to its self-expansion, enters an expanded state, thus allowing it to embed into the bone. Optionally, the delivery tube 21 is provided with graduations to facilitate identification of the depth of insertion into the bone.

[0044] Furthermore, the suture anchor 1 also includes a suture 13, which is connected to the balloon anchoring assembly 10. Optionally, the pusher 22 has an axial through hole for the suture 13 to pass through. Thus, after the balloon body 110 is implanted into the hole drilled in the bone, the operating tool 2 can be withdrawn proximally, leaving the suture 13 and the balloon anchoring assembly 10 in place in the bone.

[0045] Based on the above configuration, when the balloon body 110 is dislodged from the delivery tube and implanted into a predetermined object (such as the patient's bone), it can transition from a contracted state to an expanded state due to the self-expansion of the balloon body 110, thereby anchoring itself in the predetermined object. Furthermore, during this process, the balloon body 110 can adaptively adjust according to the patient's bone condition; based on the self-expansion of the balloon body 110, if the patient's bone is harder, the expansion range of the balloon anchoring component is smaller; if the patient's bone is more porous, the expansion range of the balloon body 110 is larger, thus reliably and firmly fixing itself in the patient's bone, meeting the clinical needs of different patients. In addition, the implantation process of the suture anchor 1 is quick and simple; it only requires pushing the balloon body 110 out of the delivery tube 21 and inserting it into the patient's bone, without the need for screwing as in threaded fixation, but rather immediate self-expansion to complete the fixation. Furthermore, the embedding part 120 can embed into the bone, further improving the connection strength and reliability with the bone, while the mesh holes 112 allow bone to enter, which is beneficial for bone ingrowth and fusion.

[0046] It should be noted that the contracted state and the expanded state refer to a set of relative states of the balloon body 110. It should be understood that when the balloon body 110 is in the contracted state, its radial outer dimension (the diameter of the smallest outer envelope circle of the cross-section of the balloon body 110) is smaller than its radial outer dimension when in the expanded state. However, the contracted state and the expanded state do not limit the specific dimensions of the balloon body 110. Specifically, when the balloon body 110 is in the contracted state, it is constrained by the delivery tube 21. Therefore, its radial outer dimension in the contracted state is adapted to different inner diameters of the delivery tube 21 and is not fixed. The radial outer dimension of the balloon body 110 in the contracted state is preferably 2mm to 20mm.

[0047] Similarly, when the balloon body 110 is in the expanded state, it is constrained by the bone. Since different patients have different bone conditions, the radial outer dimension of the balloon body 110 in the expanded state after implantation into the bone is not actually the same, and even the circumferential outer contour shape of the balloon body 110 in the expanded state may not be the same. The radial outer dimension of the balloon body 110 in the expanded state is preferably 3mm to 40mm. Preferably, the balloon body 110 is in its maximum expanded state when not subjected to external force, and can then be compressed by external force to convert it to a contracted state or a smaller than contracted state, so that it can be loaded into the delivery tube 21.

[0048] Please refer to Figure 3 and Figure 6 It exemplifies a preferred example of a wire anchor 1, wherein Figure 3 The central balloon body 110 is in a contracted state. Figure 6 The balloon body 110 is in its maximum inflated state. In an alternative example, the lumen of the delivery tube 21 is cylindrical, and correspondingly, the balloon body 110 is approximately cylindrical when in its deflated state. Optionally, the distal end of the balloon body 110 is closed and preferably has a rounded shape to avoid undesirable damage to the bone. When the balloon body 110 is in its maximum inflated state, it is approximately spherical, such as... Figure 6 As shown. It is understandable that when the balloon body 110 is implanted in the bone and expands, it may not necessarily expand to the extent shown. Figure 6 The maximum expansion state shown is likely to be in a state of... Figure 3 The contraction state shown and Figure 6 A state between the maximum expansion states shown (i.e., the expansion state).

[0049] Furthermore, the plurality of mesh holes 112 are formed by the intersecting connection of a plurality of mesh rods 111, and / or, the plurality of mesh holes 112 are formed by a hollowed-out balloon body 110. In some embodiments, the balloon body 110 includes a plurality of mesh rods 111, which are intersecting to form mesh holes 112, giving the balloon body 110 good elasticity, facilitating contraction and expansion. In other embodiments, the mesh holes 112 can also be formed by a hollowed-out balloon body 110. The balloon body 110 is made of stainless steel, titanium alloy, polymer material, absorbable material, or nickel-titanium alloy, and can be shaped by cutting a substrate with prismatic, spherical, sac-like, or ellipsoidal shapes. Optionally, when the balloon body 110 is in the expanded state, the mesh holes 112 are at least one of rhombus, parallelogram, rectangle, circle, and ellipse. Figure 6 As shown, in one example, most of the mesh holes 112 are rhomboid, while a small number of mesh holes 112 may be parallelograms or rectangles.

[0050] Optionally, the embedding portion 120 includes at least one of an edge, a corner, and a cone angle disposed on the grid rod 111 and / or on the adjacent portion of the grid hole 112. Here, the adjacent portion of the grid hole 112 refers to the adjacent portion such as the common edge or common corner of adjacent grid holes 112.

[0051] like Figure 6 As shown, in the first preferred example, the embedding portion 120 includes sharp edges disposed on the grid rod 111. These sharp edges are the junctions between the outer surface of the grid rod 111 and the side facing the grid hole 112. When the balloon body 110 expands, these sharp edges can cut into the bone, increasing the expansion deformation of the balloon body 110. Correspondingly, some bone will enter the area of ​​the grid hole 112, which is beneficial for inward bone fusion. It is understood that in some embodiments, the embedding portion 120 can actually be directly formed by the edge of the grid rod 111; that is, the embedding portion 120 does not need to be additionally provided, and the edge of the grid rod 111 is directly configured as the embedding portion 120. In such cases, the embedding portion 120 can also be considered integrally formed with the grid rod 111. In other embodiments, the embedding portion 120 can be additionally provided on the grid rod 111, and its connection method is not limited. For example, it can be fused or bonded.

[0052] like Figure 7 and Figure 8As shown, in the second preferred example, the embedding portion 120 includes sharp angles disposed at adjacent portions of the grid rods 111 and / or the grid holes 112. The sharp angles can be acute, obtuse, or right angles, and their shape is not limited. The sharp angles can be evenly distributed or concentrated in the middle portion of the balloon body 110; this embodiment is not limited in this regard. The sharp angles allow the balloon body 110 to more easily penetrate the bone during expansion, and the sharp angles can increase the friction between the balloon body 110 and the bone, improving the fixation effect of the balloon body 110.

[0053] like Figure 9 As shown, in the third preferred example, the embedding part 120 includes a cone-shaped angle disposed on the adjacent portion of the mesh hole 112. The cone-shaped angle extends outward like a spike, allowing it to penetrate the bone more easily when the balloon body 110 expands. Furthermore, the cone-shaped angle increases the friction between the balloon body 110 and the bone, improving the fixation effect of the balloon body 110. Similarly, structures such as angular or cone-shaped angles can be additionally disposed on the adjacent portion of the mesh rod 111 or the mesh hole 112, or they can be integrally formed with the adjacent portion of the mesh rod 111 or the mesh hole 112; this embodiment is not limited to this.

[0054] like Figure 10 As shown, in a fourth preferred example, the insert 120 includes a rod 121 passing through the mesh hole 112, wherein the cross-sectional shape of the rod 121 is adapted to the inner contour shape of the mesh hole 112. Optionally, the rod 121 is configured to be movably inserted into the mesh hole 112. Figure 10 In the example shown, the rod 121 is generally cylindrical with a sharp end for puncture. Some of the mesh holes 112 are rhomboid, and some are circular; the inner diameter of the circular mesh holes 112 is slightly larger than the outer diameter of the rod 121. Thus, after the balloon body 110 is implanted into the bone and expanded, the rod 121 can be inserted into the bone and placed within the mesh holes 112. Preferably, the rod 121 penetrates the balloon body 110. It should be noted that there can be one or more rods 121; when there are two or more rods 121, they are preferably inserted in a crisscross pattern. Preferably, after the rod 121 is inserted to an appropriate depth, the portion of the rod 121 exposed outside the bone surface can be cut off.

[0055] like Figure 11 and Figure 12 As shown, in the fifth preferred example, the balloon body 110 includes a prism segment 113 arranged along its own axial direction. When the balloon body 110 is in the inflated state, the edges of the prism segment 113 are configured as the embedding portion 120. In some embodiments, the embedding portion 120 is not necessarily a structure additionally provided on the balloon body 110, but can be constructed based on the shape of the balloon body 110 itself. Figure 11 In the illustrated example, the prismatic segment 113 of the balloon body 110 is approximately hexagonal prism, with its six edges forming sharp points that can penetrate the bone. Furthermore, the prismatic segment 113 of the balloon body 110 also functions as a rotation limiter, restricting the balloon body 110 from rotating circumferentially around its own axis. This reduces or prevents the balloon body 110 from rotating under external forces after implantation. It is understood that the prismatic shape is merely an example and not a limitation of the prismatic segment 113. In other embodiments, the prismatic segment 113 can also be a triangular prism, a quadrangular prism, a pentagonal prism, or have more edges, and is not limited to a regular polygonal prism shape, but can be an irregularly shaped prism.

[0056] It should be noted that the various structures of the embedded part 120 in the above-mentioned preferred examples are not limited to being set independently, but can be combined with each other. For example, while setting edges and corners, rods 121, etc., can be set at the same time. Those skilled in the art can make reasonable combinations and configurations according to actual conditions.

[0057] Optionally, the suture anchor 1 further includes a connecting portion 14, which is connected to the balloon body 110 along its axial direction. The connecting portion 14 is used to connect with the pusher 22 to drive the balloon body 110 out of the delivery tube 21 and implant it into a predetermined object. The connecting portion 14 extends along the axial direction of the balloon body 110 and has a suture hole 141 that communicates with the axial direction of the balloon body 110 at an angle. The connecting portion 14 has a receiving cavity 142 extending along the axial direction of the balloon body 110, which communicates with the suture hole 141. The cross-sectional dimension of the receiving cavity 142 is not less than the cross-sectional dimension of the suture 13 to allow the suture 13 to be received therein.

[0058] Since the suture anchor 1 is mainly used to drive the balloon body 110 into the bone along the axial direction, for ease of operation and actuation, the connecting part 14 is preferably located on the proximal side of the balloon body 110 and extends proximally to facilitate connection of the operating tool 2. Correspondingly, the distal end of the operating tool 2 has a sleeve 21 that matches the cross-sectional shape of the connecting part 14 to facilitate pushing the balloon body 110. Furthermore, based on the application requirements of the suture anchor 1, on the one hand, its balloon anchoring component 10 needs to be able to be stably anchored to the bone, and on the other hand, the balloon anchoring component 10 also needs to be able to reliably connect with the suture 13. The suture 13 can be easily connected by passing it through the suture hole 141.

[0059] Furthermore, the connecting portion 14 has a receiving cavity 142 extending axially along the balloon body 110, the receiving cavity 142 communicating with the suture hole 141, and the cross-sectional dimension of the receiving cavity 142 (referring to the dimension of the cross-section perpendicular to the axial direction of the balloon body 110) is not less than the cross-sectional dimension of the suture 13, so as to allow the suture 13 to be received therein.

[0060] For ease of operation, the suture 13 is often threaded into the suture hole 141 before the suture anchor 1 is driven into the bone. Therefore, the connection between the operating tool 2 and the connecting part 14 occurs after the suture 13 is threaded. The accommodating cavity 142 allows the suture 13 to be accommodated in a section parallel to the connecting part 14, thereby preventing the suture 13 from being squeezed and cut due to the shape fit of the sleeve 21 when it is fitted onto the connecting part 14. Figure 3 and Figure 6 As shown, in a preferred embodiment, the receiving cavity 142 is a recessed groove formed in the connecting portion 14. Of course, in other embodiments, the receiving cavity 142 may also be a blind hole formed along the axial direction of the balloon body 110, with its proximal end open and its distal end communicating with the threading hole 141.

[0061] In summary, in the suture anchor and suture anchor system provided by this invention, the suture anchor includes a balloon anchoring assembly; the balloon anchoring assembly includes an insert and a self-expanding balloon body; when the balloon body is placed inside the delivery tube, it is in a contracted state due to the restriction of the delivery tube; when the balloon body is dislodged from the delivery tube and implanted into a predetermined object, the balloon body expands outward based on its self-expanding property, transitioning from the contracted state to an expanded state to anchor itself in the predetermined object; wherein, the balloon body includes a plurality of mesh rods, which are interconnected to form mesh holes; when the balloon body is in the expanded state, the insert is used to embed the predetermined object, and the mesh holes allow the predetermined object to enter. With this configuration, when the balloon body is dislodged from the delivery tube and implanted into a predetermined object (such as the patient's bone), it can transition from a contracted state to an expanded state based on the self-expanding property of the balloon body, thereby anchoring itself in the predetermined object. Furthermore, during this process, the balloon body can adaptively adjust according to the patient's bone condition. Based on the balloon body's self-expansion property, if the patient's bone is harder, the balloon body expands less; if the patient's bone is more porous, the balloon body expands more, thus reliably and stably fixing itself in the patient's bone, meeting the clinical needs of different patients. In addition, the implantation process of the suture anchor is quick and simple; the balloon body is simply pushed out of the delivery tube and inserted into the patient's bone, without the need for screwing as in threaded fixation, but rather immediately self-expands to complete the fixation. Furthermore, the embedding part can embed into the bone, further improving the connection strength and reliability with the bone, while the mesh holes allow bone to enter, which is beneficial for bone fusion.

[0062] It should be noted that the above embodiments can be combined with each other. The above description is only a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A suture anchor, comprising: The balloon anchoring assembly comprises an embedding part and a balloon body with self-expansion; When the balloon body is placed in a delivery tube, the balloon body is in a contracted state due to the restriction of the delivery tube; when the balloon body is detached from the delivery tube and implanted into a drilled hole on a predetermined object, the balloon body is converted from the contracted state to an expanded state based on the self-expansion and can be self-adaptively adjusted according to the bone quality to be anchored in the predetermined object; The balloon body comprises a plurality of grid holes, and when the balloon body is in the expanded state, the embedding part is used to embed the predetermined object, and the grid holes allow the predetermined object to enter; The plurality of grid holes are formed by a plurality of grid rods intersecting and connecting with each other, and / or the plurality of grid holes are formed by a hollow balloon body, and the embedding part comprises at least one of edges, corners and taper angles arranged on the grid rods and / or adjacent parts of the grid holes.

2. The suture anchor of claim 1, wherein, When the balloon body is in the expanded state, the grid holes are at least one of rhombic, parallelogram, rectangular, circular and elliptical.

3. The suture anchor of claim 1, wherein, The suture anchor further comprises a connecting part connected with the balloon body along the axial direction of the balloon body, and the connecting part is used to connect with a pushing member to drive the balloon body to be detached from the delivery tube and implanted into a predetermined object.

4. The suture anchor of claim 3, wherein, The connecting part extends along the axial direction of the balloon body and has a wire hole penetrating in a direction at an angle with the axial direction of the balloon body.

5. The suture anchor of claim 4, wherein, The connecting part has a receiving cavity extending along the axial direction of the balloon body, the receiving cavity communicates with the wire hole, and the cross-sectional dimension of the receiving cavity is not less than the cross-sectional dimension of the suture to allow the suture to be accommodated therein.

6. The suture anchor of Claim 1, wherein, The balloon body comprises a prism segment arranged along the axial direction of the balloon body, and when the balloon body is in the expanded state, the edges of the prism segment are configured as the embedding part.

7. A suture anchor system, comprising: The suture anchor according to any one of claims 1-6 further comprises an operating tool, and the operating tool comprises a delivery tube arranged along the axial direction of the delivery tube and a pushing member movably arranged in the delivery tube; the delivery tube is used to load the balloon body, and the pushing member is used to drive the balloon body to be detached from the delivery tube and implanted into a predetermined object.

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