Full-suture anchor

Abstract

The invention relates to a full-suture anchor, and relates to the technical field of anchor with suture, the full-suture anchor comprises a restraint part, at least two anchor bodies and suture, one ends of the anchor bodies are arranged on the restraint part, and the other ends of the anchor bodies are far away from each other; the restraining part and the anchor body are both of an elastic braided tubular structure, and the anchor body is easier to deform than the restraining part; the suture penetrates through the restraining part, sequentially penetrates through the two anchor bodies and then penetrates out of the restraining part; the suture penetrates out of the same anchor body and then penetrates into the same anchor body to form a fastening section, and the suture penetrates through the ends, away from the restraining part, of the two adjacent anchor bodies to form a connecting section. The ends, away from the constraint part, of the multiple anchor bodies abut against one another by pulling the suture, the multiple anchor bodies abut against one another and are fastened into a whole when the suture continues to be tensioned, and finally the suture is knotted for fixation, so that the multiple anchor bodies form the positioning part, the concave part and the protruding part, and the stability of the full-suture anchor after being implanted into the bone is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wire anchors, and in particular to a full suture anchor. Background Art

[0002] Wire anchors are a simple and effective way to fix soft tissues such as tendons and ligaments in open and arthroscopic surgeries, and are the primary method of fixing soft tissues on bones. Wire anchors can be used throughout the body, including the shoulder, hand, wrist, and lower limb joints, to reattach torn tissue to bones. Traditional wire anchors are made of hard materials, which will cause a large amount of bone removal when implanted in the human body, and are prone to displacement, loosening, jamming, cartilage damage, and interference with diagnostic imaging. Degradable wire anchors may also cause adverse reactions due to rapid degradation and interfere with bone ingrowth.

[0003] The full suture anchor is a new type of anchor with a full suture structure. With its advantages of small size, soft texture, knotless design, and less bone removal, and its mechanical properties also meet the requirements of conventional arthroscopic surgery, it has become a new hot spot in the current research and clinical application of sports medicine. However, due to the particularity of its structure, the existing technology still has some shortcomings. The full suture anchor is prone to loosening when implanted in the bone, and the knot is not tight enough, resulting in the anchor falling off. Summary of the invention

[0004] In order to improve the stability of the full-suture anchor after being implanted into the bone, the present application provides a full-suture anchor.

[0005] The present application provides a full suture anchor, which adopts the following technical solution: A full suture anchor comprises a constraint portion, an anchor body and a suture, wherein at least two anchor bodies are provided and one end is provided on the constraint portion and the other end is away from each other, the constraint portion and the anchor body are both elastic braided tubular structures and the anchor body is easier to deform than the constraint portion; The suture passes through the constraint portion, passes through the two anchor bodies in sequence, and then passes out of the constraint portion; The suture passes through the same anchor body and then passes through again to form a fastening section, the fastening sections on two adjacent anchor bodies pass through the anchor bodies and are connected to each other, the suture passes through the ends of two adjacent anchor bodies away from the constraint portion to form a connecting section, the fastening section and the connecting section cooperate to fasten the multiple anchor bodies into one, and the connecting section pulls the ends of the anchor bodies away from the constraint portion to abut against each other, and forms a positioning portion protruding outward in the middle of the anchor body, the fastening section causes the anchor body to be concave inward to form a concave portion, and causes the anchor body to be partially squeezed to form a protrusion protruding outward.

[0006] By adopting the above technical solution, the suture passes through the constraint part and then passes through the two anchor bodies in sequence and then passes out from the constraint part. When the suture passes through the two anchor bodies, the suture first passes out of one anchor body and then passes back into the anchor body, then the suture passes through the anchor body again close to the adjacent anchor body and moves to the outside of the anchor body, and after the suture passes through the adjacent anchor body and moves into the anchor body, it repeats the moving path of the previous anchor body, that is, the suture continues to pass out of the anchor body and then passes back into the anchor body, and the suture continues to pass out of the anchor body again and then passes back into the previous anchor body. If more than three anchor bodies are provided, if the suture has passed through the first two anchor bodies, the suture is passed into the third anchor body, and the threading is repeated in sequence.

[0007] After the threading is completed, the suture comes out from the end of the anchor body away from the constraint part and then goes into the end of another anchor body away from the constraint part. If there are more than three anchor bodies, the suture passes through the ends of multiple anchor bodies away from the constraint part in sequence, and finally the suture passes through the anchor body and comes out from the constraint part. Finally, the suture is pulled so that the ends of the multiple anchor bodies away from the constraint part abut against each other. The suture continues to be tightened so that the multiple anchor bodies abut against each other and are fastened as a whole. Finally, the suture is knotted for fixation, so that a positioning part protruding outward is formed in the middle position of the multiple anchor bodies, the suture passes out of the anchor body and then passes into the position inside the anchor body to form an inwardly concave depression, and at the same time, the anchor body is pulled and squeezed by the suture, so that a protrusion protruding outward is locally formed on the anchor body, thereby forming a larger nodule, that is, the anchoring point, and the bone tissue will wrap the nodule inside after growth, so that the anchoring is more firm, thereby improving the stability of the full suture anchor after implantation in the bone.

[0008] At the same time, the design of the positioning part, the recessed part and the protruding part enables the bone tissue to enter the recessed part after production and attach to the positioning part, the protruding part and the anchor body. The entered bone tissue and the bone tissue located at the positioning part and on both sides of the positioning part can block the movement of the anchor body, so that the anchor structure can be embedded in the bone tissue after the bone tissue grows, making the anchor structure more firm, thereby improving the stability of the full-suture anchor after implantation in the bone, and the position of the positioning part can be closer to the middle position of the anchor body, so that the anchor bodies located on both sides of the positioning part are more evenly stressed, thereby further improving the stability of the full-suture anchor after implantation in the bone.

[0009] Furthermore, the suture is passed out of the anchor body and then passed back. Compared with designing a pull wire inside the anchor body to pull and squeeze the anchor body, the structure of the present application can make the depression deeper by simply tightening the suture, thereby increasing the size of the recess and making it easier to form. In addition, the friction between the suture and the anchor body is greater, so that when the suture is tightened for knotting, the suture is not easy to move back under the action of the elastic force of the anchor body, thereby improving the fastening effect and convenience of the anchor body, and improving the stability of the full suture anchor after implantation in the bone and the convenience during operation.

[0010] At the same time, when the suture is pulled, the constraint part will be squeezed, so that the outer wall of the constraint part forms an uneven structure, so that the bone tissue grows into the recessed position and attaches to the protruding position, thereby further improving the stability of the full suture anchor after implantation into the bone.

[0011] Optionally, the anchor body is provided with a plurality of passage holes for passing sutures at intervals along its axis, and the anchor body is provided with a treatment surface for increasing roughness by etching.

[0012] By adopting the above technical solution, the fastening section is formed through the through hole, so that the fastening section is evenly arranged, so that the anchor body is more evenly stressed, the nodule formed by tightening is larger and the stress is more stable, and the design of the treated surface increases the friction force after the bone tissue adheres to the anchor body, making the anchor more externally stable, and improving the stability of the full suture anchor after implantation into the bone.

[0013] Optionally, the constraint portion is provided with a plurality of through holes, and both ends of the suture pass through at least two through holes so that the suture passes out of the constraint portion and then enters again, and is used to prevent the two ends of the suture from slipping after being knotted.

[0014] By adopting the above technical scheme, one end of the suture is first passed through at least two through holes on the constraint part, that is, passed out from the inside of the constraint part and then passed into the constraint part from the outside of the constraint, and then the suture is passed through multiple anchor bodies in sequence and then passed into the constraint part. The suture passes through at least two through holes on the constraint part, that is, passed out from the inside of the constraint part and then passed into the constraint part from the outside of the constraint, and then the suture is pulled to tighten the anchor body, and then the suture is tied after tightening the anchor body and the constraint part, so that the suture knot is located in the constraint part, and the design of the suture passing out of the constraint part and then entering can prevent the knot from slipping, which greatly improves the convenience during tightening and the stability after knotting, thereby greatly improving the stability of the full suture anchor after implantation in the bone and the convenience during operation.

[0015] Optionally, a plurality of accommodating spaces for bone tissue to enter are formed between two adjacent anchor bodies.

[0016] By adopting the above technical solution, more bone tissue can enter the inner side of multiple anchor bodies, and the entered bone tissue can block the movement of the anchor bodies, making the anchors more stable, thereby greatly improving the stability of the full suture anchors after implantation into the bone.

[0017] Optionally, the anchor body includes a tight zone and a loose zone located on one side of the tight zone close to the accommodation space, the weaving density of the tight zone is greater than the weaving density of the loose zone and when the suture is pulled, the loose zone is deformed first with the tight zone.

[0018] By adopting the above technical solution, the design of the tight area and the loose area makes it easier for the loose area of ​​the anchor body to deform when the suture is tightened, that is, the end of the anchor body away from the constraint portion is easier to bend toward the accommodating space, while the middle position of the anchor body is easier to protrude outward, thereby making it easier to form a positioning portion protruding outward and an accommodating space, so that the fixation effect of bone tissue entering the accommodating space is better, which greatly improves the stability of the full suture anchor after implantation into the bone.

[0019] Optionally, a passage cavity is formed inside the constraint portion, through which only the two ends of the suture can pass.

[0020] By adopting the above technical solution, the two sutures pass through the through cavity, so that the side wall of the through cavity presses on the two sutures, increasing the friction between the restraining part and the two sutures, making the sutures better fixed and achieving the purpose of restraining the sutures, thereby improving the stability of the full suture anchor after implantation in the bone.

[0021] Optionally, both the anchor body and the constraint portion are not homogeneous structures, and the number of braided strands, braiding density, diameter and thickness of the anchor body gradually change along the axis of the anchor body and are largest near one end of the constraint portion, and the number of braided strands, braiding density, diameter and thickness of the constraint portion gradually change along the axis of the constraint portion and are largest far from one end of the constraint portion.

[0022] By adopting the above technical solution, the end of the anchor body close to the constraint part is squeezed and pressed against the constraint part. Therefore, the end of the anchor body and the constraint part close to each other requires a certain strength to achieve support. However, if the overall strength of the anchor body and the constraint part meets the support strength, the force required to tighten the suture will be relatively large, which greatly reduces the convenience of operation and also makes the fixing effect poor when knotting.

[0023] Therefore, the number of braided strands, braiding density, diameter and thickness of the anchor body and the constraint part are gradually changed, and the end where the anchor body and the constraint part are close to each other is the largest, so that the supporting strength can be met when the ends where the anchor body and the constraint part are close to each other are abutted, and the force required for tightening the suture is reduced, thereby improving the convenience and fixing effect during operation, thereby improving the stability of the full suture anchor after implantation in the bone and the convenience during operation.

[0024] At the same time, the number of braided strands, braiding density, diameter and thickness at the end where the anchor body and the constraint part are far away from each other are the smallest, that is, the braid is relatively sparse during braiding, and when the suture is tightened, the anchor body and the constraint part can be squeezed and deformed against each other, so that the braids of the anchor body and the constraint part are close to each other, that is, the sparse braids are close to each other and become tight, so that the tightness of the braids of the anchor body and the constraint part as a whole tends to be consistent, that is, the suture is relatively sparse before being tightened, which can be convenient for tightening, and after the suture is tightened, the braid tends to be tight, so that the supporting force of the anchor body and the constraint part is enhanced and the overall tends to be consistent, thereby improving the stability of the full suture anchor after implantation into the bone and the convenience during operation.

[0025] Optionally, the anchor body has 8-16 braided strands, a braiding density of 8-15 strands / cm, and a diameter of 0.3-0.7cm; the constraint portion has 16-32 braided strands, a braiding density of 20-40 strands / cm, and a diameter of 0.2-0.4cm, and the constraint portion and the anchor body are both 0.1-0.3cm thick.

[0026] By adopting the above technical solution, the number of braided strands, braiding density, diameter and thickness of the anchor body and the constraint part can meet the needs of use, so that the anchor body and the constraint part can meet the strength during support, while also improving the convenience when tightening the suture, and making the texture of the constraint part harder than the anchor body, that is, making the anchor body easier to deform than the constraint part, thereby improving the stability of the full suture anchor after implantation in the bone and the convenience during operation.

[0027] Optionally, the length of the constraint portion is L1, the length of the anchor body is L2, L2=1-2 cm, and L2≥5L1.

[0028] Optionally, a plurality of the anchor bodies are arranged in a circular array around the axis of the constraint portion.

[0029] By adopting the above technical solution, when more than three anchor bodies are provided, the multiple anchor bodies can form a three-dimensional structure, so that the three-dimensional structure can be wrapped by the bone tissue after growth, thereby further improving the stability of the anchor structure.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: 1. By pulling the suture, the ends of the multiple anchor bodies away from the constraint part are pressed against each other. The suture is further tightened to make the multiple anchor bodies press against each other and be fastened as a whole. Finally, the suture is knotted for fixing, so that a positioning part protruding outward is formed in the middle of the multiple anchor bodies. The suture passes out of the anchor body and then passes into the outer position of the anchor body to form an inwardly concave concave part. At the same time, the anchor body is pulled and squeezed by the suture, so that a protrusion protruding outward is formed locally on the anchor body, thereby forming a larger nodule. After the bone tissue grows, the nodule is wrapped inside, which improves the stability of the full suture anchor after implantation into the bone.

[0031] 2. Through the design of the positioning part, the recessed part and the protruding part, the bone tissue can enter the recessed part after production and adhere to the positioning part, the protruding part and the anchor body. The bone tissue that has entered and the bone tissue located at the positioning part and on both sides of the positioning part can block the movement of the anchor body, so that the anchor structure can be embedded in the bone tissue after the bone tissue grows, making the anchor structure more firm and improving the stability of the full suture anchor after implantation in the bone. The position of the positioning part can be closer to the middle position of the anchor body, so that the anchor bodies located on both sides of the positioning part are more evenly stressed, thereby further improving the stability of the full suture anchor after implantation in the bone.

[0032] 3. By passing the suture out of the anchor body and then passing it back, compared with designing a pull wire inside the anchor body to pull and squeeze the anchor body, the structure of the present application can make the depression deeper by simply tightening the suture, thereby increasing the size of the depression and making it easier to form. In addition, the friction between the suture and the anchor body is greater, so that when the suture is tightened for knotting, the suture is not easy to move back under the action of the elastic force of the anchor body, thereby improving the fastening effect and convenience of the anchor body, and improving the stability of the full suture anchor after implantation into the bone and the convenience during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the full suture anchor when it is just placed in the bone; Figure 2 It is a schematic diagram of the structure after full suture anchor fixation.

[0034] Figure numerals: 1. Constraint portion; 11. Through cavity; 12. Through hole; 2. Anchor body; 21. Accommodation space; 23. Tight area; 24. Loose area; 25. Passage hole; 26. Positioning portion; 27. Recessed portion; 28. Protrusion; 3. Suture; 31. Fastening section; 32. Connecting section. DETAILED DESCRIPTION

[0035] The present application is described in further detail below.

[0036] The embodiment of the present application discloses a full suture anchor.

[0037] Reference Figure 1 and Figure 2 The full suture anchor comprises a constraint portion 1, an anchor body 2 and a suture 3. At least two anchor bodies 2 are provided and one end is provided on the constraint portion 1, and the other ends of the plurality of anchor bodies 2 are far away from each other. The constraint portion 1 and the anchor body 2 are both elastic braided tubular structures, and the anchor body 2 is easier to deform than the constraint portion 1. After the suture 3 passes through the constraint portion 1, it passes through the two anchor bodies 2 in turn and then passes out from the constraint portion 1. The suture 3 is tightened so that the plurality of anchor bodies 2 are fastened together.

[0038] The anchor bodies 2 are arranged in a circular array around the axis of the constraint part 1. When the number of the anchor bodies 2 is at least three, the multiple anchor bodies 2 cooperate to form a three-dimensional structure. After the bone tissue grows, it wraps the three-dimensional structure, thereby further improving the stability of the anchor structure.

[0039] The constraint part 1 and the anchor body 2 are not homogeneous structures. A homogeneous structure is a structure with uniform texture or uniform weaving. The number of braided strands, braiding density, diameter and thickness of the anchor body 2 gradually change along the axis of the anchor body 2 and are the largest at the end close to the constraint part 1. The number of braided strands, braiding density, diameter and thickness of the constraint part 1 gradually change along the axis of the constraint part 1 and are the largest at the end far from the constraint part 1.

[0040] The anchor body 2 has 8-16 braided strands, a braiding density of 8-15 strands / cm, a diameter of 0.3-0.7cm, and a braided fiber diameter range of 50-100tex. The number of braided strands, braiding density, diameter, and thickness of the anchor body 2 vary within the above range. The number of braided strands of the constraint part 1 is 16-32, a braiding density of 20-40 strands / cm, and a diameter of 0.2-0.4cm. The constraint part 1 and the anchor body 2 have the same thickness, which is 0.1-0.3cm, and the braided fiber diameter range is 50-100tex. The number of braided strands, braiding density, diameter, and thickness of the constraint part 1 and the anchor body 2 vary within the above range. The length of the constraint part 1 is L1, and the length of the anchor body 2 is L2, and L2≥5L1, L2=1-2cm, or, L2=1.5cm.

[0041] After the multiple anchor bodies 2 are fastened together, a receiving space 21 for bone tissue to enter is formed between two adjacent anchor bodies 2. After the bone tissue grows, it enters the receiving space 21 to fill it, thereby improving the stability of the anchor structure. The surface of the anchor body 2 will be etched to increase the surface roughness of the anchor body 2. When the implanted bone tissue is tightened, the friction between the anchor body 2 and the bone tissue can be increased, thereby improving the stability of the anchor structure. Etching treatment includes commonly used etching modification methods such as acid solution etching, organic solution etching, electrochemical anodizing, plasma treatment, microwave radiation, and ultrasonic etching.

[0042] The anchor body 2 includes a tight zone 23 and a loose zone 24 located on the side of the tight zone 23 close to the accommodating space 21. The weaving density of the tight zone 23 is greater than the weaving density of the loose zone 24. At the same time, the number of weaving strands, weaving density, diameter and thickness of the anchor body 2 gradually change along the axis of the anchor body 2 and are the largest at the end close to the constraint portion 1, that is, the weaving density of the anchor body 2 at the same position along its own axis close to the accommodating space 21 is greater than the weaving density at the side away from the accommodating space 21, so that when the suture 3 is pulled, the loose zone 24 is deformed first with the tight zone 23, that is, the end of the anchor body 2 away from the constraint portion 1 is bent and deformed toward the accommodating space 21, so that the accommodating space 21 is easier to form.

[0043] A plurality of through holes 12 are provided on the constraint portion 1 and are located on both sides of its own axis and are spaced apart along its own axis. A plurality of passage holes 25 are provided on the anchor body 2 and are located on both sides of its own axis and are evenly spaced apart along its own axis. A through cavity 11 is formed in the constraint portion 1 through which only the two ends of the suture 3 can pass, so that the two ends of the suture 3 can be tightly attached to the through cavity 11, thereby increasing the contact area between the suture 3 and the through cavity 11, that is, increasing the friction force on the suture 3.

[0044] The anchor body 2 is a soft, non-absorbable medical polymer material, including ultra-high molecular weight polyethylene, polyester, etc. The soft fiber material ensures that the anchor body 2 has excellent deformation ability; the constraint part 1 is made of silicone rubber, polyurethane, and polytetrafluoroethylene fiber, which is woven to form an elastic tube with certain elasticity; the suture 3 is a wire body or a flat belt, and the material is non-absorbable material ultra-high molecular weight polyethylene, and its molecular weight is between 3 and 6 million.

[0045] One end of the suture 3 passes through the cavity 11, and then passes through at least two through holes 12, so that the suture 3 passes through the constraint portion 1 and then passes into the constraint portion 1, and then the suture 3 passes into one of the anchor bodies 2, and the suture 3 passes through at least two through holes 25 located on the same anchor body 2, so that the suture 3 passes through the anchor body 2 and then passes into the anchor body 2, that is, the suture 3 passes from the same anchor body 2 and then passes into the same anchor body 2 to form a fastening section 31, and one anchor body 2 forms at least one fastening section 31.

[0046] Then, the suture 3 passes through the passage hole 25 close to the side of the adjacent anchor body 2 and moves to the outside of the anchor body 2, thereby passing through one anchor body 2, and then uses the same method to pass through multiple anchor bodies 2, so that the fastening sections 31 on the two adjacent anchor bodies 2 are connected to each other when the suture 3 passes through the anchor body 2, and at the same time, when the suture 3 passes through the anchor body 2, it gradually approaches the end of the anchor body 2 close to the constraint portion 1 to the end of the anchor body 2 away from the constraint portion 1, and finally, the suture 3 passes through the end of one of the anchor bodies 2 away from the constraint portion 1, that is, the suture 3 passes through the passage hole 25, and then the suture 3 passes through the adjacent one of the anchor bodies 2. The nail body 2 is inserted at one end away from the constraint part 1. Similarly, the suture 3 passes through the through hole 25. The suture 3 passes through two through holes 25 to form a connecting section 32, and then repeats passing through multiple anchor bodies 2. Finally, the suture 3 enters the constraint part 1 through one of the anchor bodies 2, and then the suture 3 continues to pass through at least two through holes 12, so that the suture 3 passes out of the constraint part 1 and then passes into the constraint part 1. Then, the two ends of the suture 3 are tightened and knotted, so that the knot is located in the through cavity 11 after the knotting, and at the same time, the suture 3 can prevent the knot from slipping after passing through the through hole 12.

[0047] The fastening section 31 and the connecting section 32 cooperate to fasten the multiple anchor bodies 2 together, and the connecting section 32 pulls the end of the anchor body 2 away from the constraint part 1 to abut against each other, and forms a positioning part 26 protruding outward at the middle of the anchor body 2. The fastening section 31 is tightened to make the anchor body 2 concave inward to form a concave part 27. As the anchor body 2 moves inward, the anchor body 2 is squeezed, so that a protruding part 28 protruding outward is formed locally on the anchor body 2. At the same time, after the suture 3 is tightened and knotted, the constraint part 1 can also form an uneven plane. After the bone tissue grows, it covers the anchor body 2, and the bone tissue extends into the concave part 27 and attaches to the positioning part 26 and the protruding part 28. The bone tissue can also extend to the concave part on the constraint part 1 and attach to the constraint part 1, thereby further improving the stability of the anchor structure.

[0048] First, an inserter is used to implant the anchor body 2 and the constraint part 1 with the suture 3 threaded through them into the bone, that is, into the mounting hole opened on the bone; the inserter is pulled out, and the anchor body 2 and the constraint part 1 remain in the bone; the two ends of the suture 3 are tightened and knotted, and the anchor body 2 shrinks and folds into a ball under the action of the pulling force, and the ends of the anchor body 2 away from the constraint part 1 are pressed against each other for positioning, and a recessed part 27, a positioning part 26 and a protruding part 28 are formed on the anchor body 2, so that multiple anchor bodies 2 are fastened together to form a larger nodule, and the bone tissue grows and covers the nodule formed by the anchor structure, thereby further improving the stability of the anchor structure.

[0049] The surface of the anchor body 2 is etched to form a treated surface for increasing friction, which increases the friction between the anchor body 2 and the bone tissue, making it more firmly fixed after tightening; after pulling the suture 3, the elastic contraction force of the constraint part 1 achieves the purpose of constraining the suture 3, thereby realizing the fixation of the entire suture 3 anchor in the bone tissue. The inserter is a prior art and will not be described here.

[0050] The working principle of the embodiment of the present application is as follows: First, use an inserter to implant the anchor body 2 and the constraint part 1 with the suture 3 into the bone, pull out the inserter, and the anchor body 2 and the constraint part 1 remain in the bone; tighten the two ends of the suture 3 and tie a knot, the anchor body 2 is fastened together to form a larger nodule, and the bone tissue grows and covers the nodule, thereby further improving the stability of the anchor structure. At the same time, because the surface of the anchor body 2 is etched, the friction between the anchor body 2 and the bone tissue is increased, so that it is more firmly fixed after tightening, thereby improving the stability of the anchor structure.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A full suture anchor, characterized in that: It comprises a restraining portion (1), an anchor body (2) and a suture (3), wherein at least two anchor bodies (2) are provided, one end of which is provided on the restraining portion (1) and the other end is away from each other, the restraining portion (1) and the anchor body (2) are both elastic braided tubular structures, and the anchor body (2) is easier to deform than the restraining portion (1); The suture (3) passes through the constraint portion (1), then passes through the two anchor bodies (2) in sequence, and then passes out of the constraint portion (1); The suture (3) passes through the same anchor body (2) and then passes through it again to form a fastening section (31). The fastening sections (31) located on two adjacent anchor bodies (2) pass through the anchor bodies (2) to be connected to each other. The suture (3) passes through the ends of the two adjacent anchor bodies (2) away from the constraint portion (1) to form a connecting section (32). The fastening section (31) and the connecting section (32) cooperate to fasten the plurality of anchor bodies (2) into one body and the connecting section (32) pulls the ends of the anchor bodies (2) away from the constraint portion (1) to abut against each other, and forms a positioning section (26) protruding outward in the middle of the anchor body (2). The fastening section (31) causes the anchor body (2) to be recessed inward to form a recessed section (27) and causes the anchor body (2) to be partially squeezed to form a protruding section (28) protruding outward.

2. A full suture anchor according to claim 1, characterized in that: The anchor body (2) is provided with a plurality of passage holes (25) spaced apart along its axis for the suture (3) to pass through, and the anchor body (2) is provided with a treatment surface for increasing the roughness by etching.

3. The full suture anchor according to claim 1, characterized in that: The constraint portion (1) is provided with a plurality of through holes (12), and both ends of the suture (3) pass through at least two through holes (12), so that the suture (3) passes through the constraint portion (1) and then re-enters, and is used to prevent the two ends of the suture (3) from slipping after being knotted.

4. The full suture anchor according to claim 1, characterized in that: A plurality of accommodating spaces (21) for bone tissue to enter are formed between two adjacent anchor bodies (2).

5. A full suture anchor according to claim 4, characterized in that: The anchor body (2) comprises a tight zone (23) and a loose zone (24) located on a side of the tight zone (23) close to the accommodation space (21); the weaving density of the tight zone (23) is greater than the weaving density of the loose zone (24); and when the suture (3) is pulled, the loose zone (24) is deformed first together with the tight zone (23).

6. The full suture anchor according to claim 1, characterized in that: A through cavity (11) is formed inside the restraining portion (1) and is only capable of allowing the two ends of the suture (3) to pass through.

7. The full suture anchor according to claim 1, characterized in that: The anchor body (2) and the constraint portion (1) are not homogeneous structures; the number of braided strands, braiding density, diameter and thickness of the anchor body (2) gradually change along the axis of the anchor body (2) and are largest at one end close to the constraint portion (1); the number of braided strands, braiding density, diameter and thickness of the constraint portion (1) gradually change along the axis of the constraint portion (1) and are largest at one end away from the constraint portion (1).

8. The full suture anchor according to claim 7, characterized in that: The anchor body (2) has 8 to 16 braided strands, a braiding density of 8 to 15 strands / cm, and a diameter of 0.3 to 0.7 cm; the constraint portion (1) has 16 to 32 braided strands, a braiding density of 20 to 40 strands / cm, and a diameter of 0.2 to 0.4 cm; the constraint portion (1) and the anchor body (2) are both 0.1 to 0.3 cm thick.

9. The full suture anchor according to claim 7, characterized in that: The length of the constraint portion (1) is L1, the length of the anchor body (2) is L2, L2=1-2 cm, and L2≥5L1.

10. The full suture anchor according to claim 1, characterized in that: The plurality of anchor bodies (2) are arranged in a circular array around the axis of the constraint portion (1).

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