A full suture anchor

Abstract

The present application relates to a full suture anchor, which relates to the technical field of suture anchors with threads. The full suture anchor includes a restraint part, an anchor body, and a suture. There are at least two anchor bodies, one end of which is arranged on the restraint part and the other end is arranged to be away from each other. Both the restraint part and the anchor body are elastic braided tubular structures, and the anchor body is more deformable than the restraint part; the suture passes through the restraint part, then passes through the two anchor bodies in sequence, and then passes out of the restraint part; the suture forms a fastening section after passing out of and then passing into the same anchor body, and the suture forms a connection section after passing through one end of the adjacent two anchor bodies away from the restraint part. In the present application, by pulling the suture, the ends of the multiple anchor bodies away from the restraint part are made to abut against each other. When the suture is further tightened, the multiple anchor bodies are abutted and fastened together. Finally, the suture is knotted for fixation, so that the multiple anchor bodies form a positioning part, a concave part, and a protruding part, improving the stability of the full suture anchor after being implanted into the bone.

Description

Technical Field

[0001] The present application relates to the technical field of suture - attached anchors, and particularly to a fully suture - type anchor. Background Art

[0002] Suture - attached anchors can simply and effectively fix soft tissues such as tendons and ligaments in open and arthroscopic surgeries, and are the main method for fixing soft tissues on bones. Suture - attached anchors can be used in various parts of the human body, including the shoulder, hand, wrist joint, and lower limb joints, to re - attach torn tissues to bones. Traditional suture - attached anchors are composed of hard materials, which will cause a large amount of bone removal when implanted into the human body, and are prone to displacement, loosening, jamming, cartilage damage, and interference with diagnostic imaging. Degradable suture - attached anchors may also cause adverse reactions due to too - fast degradation, interfering with bone in - growth and other problems.

[0003] The fully suture - type anchor is a new type of suture - attached anchor with a fully suture structure. With advantages such as small size, soft texture, knot - free design, and less bone exclusion, and its mechanical properties also meeting the requirements of conventional arthroscopic surgeries, it has become a new research and clinical application hotspot in the field of sports medicine. Nevertheless, due to the particularity of its structure, there are still some deficiencies in the prior art. The fully suture - type anchor is prone to looseness when implanted into the bone, and the knotting is not tight enough, resulting in problems such as anchor detachment. Summary of the Invention

[0004] In order to improve the stability of the fully suture - type anchor after implantation into the bone, the present application provides a fully suture - type anchor.

[0005] The fully suture - type anchor provided by the present application adopts the following technical solutions:

[0006] A fully suture - type anchor includes a restraint part, an anchor body, and a suture. At least two anchor bodies are provided, one end of which is arranged on the restraint part and the other end is arranged to be away from each other. Both the restraint part and the anchor body are elastic braided tubular structures, and the anchor body is more deformable than the restraint part;

[0007] The suture passes through the restraint part, then passes through two anchor bodies in sequence, and then passes out of the restraint part;

[0008] The suture passes out of and then passes into the same anchor body to form a fastening section. The fastening sections located on adjacent two anchor bodies pass through the anchor bodies and are connected to each other. The suture forms a connection section when passing through one - end away from the restraint part of adjacent two anchor bodies. The cooperation of the fastening section and the connection section makes multiple anchor bodies fastened together, and the connection section pulls the one - end away from the restraint part of the anchor bodies to abut against each other, and makes a positioning part protruding outward formed in the middle of the anchor body. The fastening section makes the anchor body form a concave part inwardly and makes a protruding part protruding outward locally after the anchor body is extruded.

[0009] By adopting the above technical solution, the suture passes through the restraint part and then successively passes through two anchor bodies and then passes out of the restraint 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 and moves to the outside of the anchor body near the adjacent anchor body. After the suture passes through the adjacent anchor body and moves into the anchor body, the movement path of the previous anchor body is repeated, that is, the suture continues to pass out of the anchor body and then passes back into the anchor body. The suture continues to pass out of the anchor body and then passes back into the previous anchor body. If there are more than three anchor bodies, and if the suture has passed through the first two anchor bodies, the suture penetrates into the third anchor body, and thus the threading is sequentially repeated.

[0010] After the threading is completed, the suture passes out of one end of the anchor body away from the restraint part and penetrates into one end of another anchor body away from the restraint part. If there are more than three anchor bodies, the suture sequentially passes through one ends of multiple anchor bodies away from the restraint part. Finally, the suture passes through the anchor body and then passes out of the restraint part. Finally, the suture is pulled so that one ends of multiple anchor bodies away from the restraint part abut against each other. When the suture is further tightened, multiple anchor bodies are abutted and fastened together. Finally, the suture is knotted for fixation, so that a positioning part protruding outward is formed at the middle position of multiple anchor bodies. The position where the suture passes out of the anchor body and then passes back into the anchor body forms a concave part recessed inward. At the same time, the anchor body is pulled and squeezed by the suture, so that a protruding part protruding outward is formed locally on the anchor body, so as to form a larger nodule, that is, an anchoring point. After the bone tissue grows, the nodule is wrapped therein, thereby making the anchoring more firm and improving the stability of the full suture anchor implanted into the bone.

[0011] At the same time, due to the design of the positioning part, the concave part and the protruding part, after the bone tissue grows, it can enter the concave part and adhere to the positioning part, the protruding part and the anchor body. The bone tissue that enters and the bone tissue located on both sides of the positioning part can block the movement of the anchor body, so that after the bone tissue grows, the anchor structure can be embedded in the bone tissue, making the anchor structure more firm, improving the stability of the full suture anchor implanted into the bone, and the position of the positioning part can be closer to the middle position of the anchor body, making the forces on both sides of the positioning part of the anchor body more uniform when stressed, thereby further improving the stability of the full suture anchor implanted into the bone.

[0012] Furthermore, the suture passes out of the anchor body and then passes back. Compared with designing a wire in the anchor body to pull and squeeze the anchor body, the structure of the present application can make the concave part sink deeper only by tightening the suture, increasing the size of the concave part and making it easier to form. Moreover, the friction between the suture and the anchor body is greater, so that when the suture is tightened and knotted, the suture is not easily displaced under the elastic force of the anchor body, improving the fastening effect and convenience of the anchor body, and improving the stability of the full suture anchor implanted into the bone and the convenience during operation.

[0013] When pulling the suture at the same time, the restraining part will also be squeezed, so that the outer wall of the restraining part forms an uneven structure, so that after bone tissue grows, it enters the concave position and adheres to the protruding position, thus further improving the stability of the full suture anchor after being implanted into the bone.

[0014] Optionally, a plurality of passage holes for the suture to pass through are formed at intervals along the axis of the anchor body, and a treatment surface for increasing the roughness is formed on the anchor body by etching treatment.

[0015] By adopting the above technical solution, the fastening section is formed by passing through the passage hole, so that the fastening section is uniformly arranged, the force on the anchor body is more uniform, the tightened knot is larger and the force is more stable. The design of the treatment surface increases the friction force after the bone tissue adheres to the anchor body, makes the anchor more stable externally, and improves the stability of the full suture anchor after being implanted into the bone.

[0016] Optionally, a plurality of through holes are formed in the restraining part, and both ends of the suture pass through at least two through holes and are used to block the sliding of the suture ends after knotting after the suture passes out of the restraining part and then passes in again.

[0017] By adopting the above technical solution, one end of the suture first passes through at least two through holes in the restraining part, that is, passes out of the restraining part and then passes into the restraining part from the outside of the restraining part, and then the suture passes through a plurality of anchor bodies in sequence and then passes into the restraining part. The suture passes through at least two through holes in the restraining part, that is, passes out of the restraining part and then passes into the restraining part from the outside of the restraining part, and then the suture is pulled to fasten the anchor body, and then the suture tightens the anchor body and the restraining part and then knots, so that the suture knot is located in the restraining part, and the design of passing out of the restraining part and then passing in again can block the sliding of the knot, greatly improving the convenience during tightening and the stability after knotting, thus greatly improving the stability of the full suture anchor after being implanted into the bone and the convenience during operation.

[0018] Optionally, a plurality of accommodation spaces for bone tissue to enter are formed between adjacent two of the anchor bodies.

[0019] By adopting the above technical solution, more bone tissue can enter the inner sides of the plurality of anchor bodies, and the entered bone tissue can block the movement of the anchor bodies, making the anchor more stable, thus greatly improving the stability of the full suture anchor after being implanted into the bone.

[0020] Optionally, the anchor body includes a dense area and a loose area located on one side of the dense area close to the accommodation space, and the weaving density of the dense area is greater than that of the loose area, and the loose area deforms first with the dense area when the suture is pulled.

[0021] By adopting the above technical solution, the design of the tight area and the loose area enables the anchor body to be more easily deformed in the loose area when subjected to the tension force of the suture, that is, the end of the anchor body far from the constraint part is more easily bent towards the accommodation space, and the middle position of the anchor body is more easily protruded outwards, so as to more conveniently form the positioning part protruding outwards and more easily form the accommodation space, making the fixing effect of the bone tissue entering the accommodation space better and greatly improving the stability of the all-suture anchor after being implanted into the bone.

[0022] Optionally, a through cavity that can only allow the two ends of the suture to pass through is formed inside the constraint part.

[0023] By adopting the above technical solution, the two sutures pass through the through cavity, so that the side wall at the through cavity presses against the two sutures, increasing the friction between the constraint part and the two sutures, making the fixation of the suture better and serving the purpose of restraining the suture, and improving the stability of the all-suture anchor after being implanted into the bone.

[0024] Optionally, neither the anchor body nor the constraint part is a homogeneous structure. The number of braided strands, braided density, diameter and thickness of the anchor body gradually change along the axis of the anchor body and are the largest at the end close to the constraint part. The number of braided strands, braided density, diameter and thickness of the constraint part gradually change along the axis of the constraint part and are the largest at the end far from the constraint part.

[0025] By adopting the above technical solution, the end of the anchor body close to the constraint part is pressed against the constraint part after being squeezed. Therefore, certain strength is required at both ends of the anchor body and the constraint part that are close to each other to achieve support. However, if the overall strength of the anchor body and the constraint part both meet the support strength, it will make the force required to tighten the suture by the suture larger, greatly reducing the convenience of operation, and also making the fixing effect during knotting and fixing poor.

[0026] Therefore, the number of braided strands, braided density, diameter and thickness of the anchor body and the constraint part gradually change, and are the largest at the ends where the anchor body and the constraint part are close to each other, that is, the support strength can be met when the ends where the anchor body and the constraint part are close to each other abut, and at the same time, the force required to tighten the suture is reduced, improving the convenience of operation and the fixing effect, so as to improve the stability of the all-suture anchor after being implanted into the bone and the convenience of operation.

[0027] Meanwhile, the number of braided strands, braiding density, diameter, and thickness at the ends of the anchor body and the restraint part that are away from each other are the smallest. That is, the braided fabric is relatively sparse during braiding. When the suture is tightened, the anchor body and the restraint part can be deformed by mutual extrusion, so that the braided fabrics of the anchor body and the restraint part approach each other, that is, the sparse braided fabrics approach each other and become tight, making the tightness of the overall braided fabric of the anchor body and the restraint part tend to be consistent. That is, it is relatively sparse before the suture is tightened, which is convenient for tightening. After the suture is tightened, the braided fabric tends to be tight, making the support force of the anchor body and the restraint part enhanced and the overall tendency to be consistent, thereby improving the stability after the all-suture anchor is implanted into the bone and the convenience during operation.

[0028] Optionally, the number of braided strands of the anchor body is 8 - 16 strands, the braiding density is 8 - 15 strands / cm, and the diameter is 0.3 - 0.7 cm; the number of braided strands of the restraint part is 16 - 32 strands, the braiding density is 20 - 40 strands / cm, the diameter is 0.2 - 0.4 cm, and the thicknesses of both the restraint part and the anchor body are 0.1 - 0.3 cm.

[0029] By adopting the above technical solution, the number of braided strands, braiding density, diameter, and thickness of the anchor body and the restraint part can all meet the requirements during use, enabling the anchor body and the restraint part to meet the strength during support, improving the convenience when tightening the suture at the same time, and making the texture of the restraint part harder than that of the anchor body, that is, making the anchor body more deformable than the restraint part, thereby improving the stability after the all-suture anchor is implanted into the bone and the convenience during operation.

[0030] Optionally, the length of the restraint part is L1, the length of the anchor body is L2, L2 = 1 - 2 cm, and L2 ≥ 5L1.

[0031] Optionally, a plurality of the anchor bodies are arranged in a circumferential array around the axis of the restraint part.

[0032] By adopting the above technical solution, when there are more than three anchor bodies, a three-dimensional structure can be formed by the plurality of anchor bodies, so that after bone tissue grows, the three-dimensional structure can be wrapped, thereby further improving the stability of the anchor structure.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. By pulling the suture, the ends of multiple anchor bodies away from the restraint part abut against each other. Continuing to tighten the suture causes the multiple anchor bodies to abut and fasten together as one. Finally, the suture is knotted for fixation, resulting in a positioning part protruding outward at the middle position of the multiple anchor bodies. The suture passes out of the anchor body and then passes into the anchor body to form a recessed part that is recessed inward. At the same time, the anchor body is pulled and squeezed by the suture, causing a protruding part to protrude outward locally at the anchor body, thereby forming a larger nodule. After bone tissue grows, it wraps the nodule inside, improving the stability of the all-suture anchor after implantation into the bone.

[0035] 2. Through the design of the positioning part, the recessed part and the protruding part, after bone tissue grows, it can enter the recessed part and adhere to the positioning part, the protruding part and the anchor body. The bone tissue that enters and the bone tissue located on both sides of the positioning part can both prevent the anchor body from moving, so that after the bone tissue grows, the anchor structure can be embedded in the bone tissue, making the anchor structure more firm, improving the stability of the all-suture anchor after implantation into the bone, and the position of the positioning part can be closer to the middle position of the anchor body, making the forces on the anchor bodies on both sides of the positioning part more uniform, thereby further improving the stability of the all-suture anchor after implantation into the bone.

[0036] 3. By passing the suture out of the anchor body and then back in, compared with designing a pull wire inside the anchor body to pull and squeeze the anchor body, the structure of this application can make the recess deeper only by tightening the suture, increasing the size of the recessed part and making it easier to form. Moreover, the friction between the suture and the anchor body is greater, so that when tightening the suture for knotting, the suture is not easily displaced under the elastic force of the anchor body, improving the fastening effect and convenience of the anchor body, and improving the stability of the all-suture anchor after implantation into the bone and the convenience during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram when the all-suture anchor is just placed into the bone;

[0038] Figure 2 is a schematic structural diagram after the all-suture anchor is fixed.

[0039] Reference numerals: 1, restraint part; 11, through cavity; 12, through hole; 2, anchor body; 21, accommodation space; 23, tight area; 24, loose area; 25, passage hole; 26, positioning part; 27, recessed part; 28, protruding part; 3, suture; 31, fastening section; 32, connecting section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following further details this application.

[0041] The embodiments of this application disclose an all-suture anchor.

[0042] Refer toFigure 1 and Figure 2 As shown in Figure 2 , the all-suture anchor includes a constraint part 1, an anchor body 2, and a suture 3. There are at least two anchor bodies 2, and one end of each is arranged on the constraint part 1. The other ends of the multiple anchor bodies 2 are arranged to be away from each other. Both the constraint part 1 and the anchor body 2 are elastic braided tubular structures, and the anchor body 2 is more deformable than the constraint part 1; the suture 3 passes through the constraint part 1, then passes through two anchor bodies 2 in sequence, and then passes out of the constraint part 1. The suture 3 is tightened so that the multiple anchor bodies 2 are fastened together.

[0043] The anchor bodies 2 are arranged in a circumferential array around the axis of the constraint part 1. When the number of anchor bodies 2 is at least three, the multiple anchor bodies 2 cooperate to form a three-dimensional structure, and after the bone tissue grows, the three-dimensional structure is wrapped, thereby further improving the stability of the anchor structure.

[0044] Neither the constraint part 1 nor the anchor body 2 is a homogeneous structure. A homogeneous structure means a structure with uniform texture or uniform braiding. 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 away from the constraint part 1.

[0045] The number of braided strands of the anchor body 2 is 8 - 16 strands, the braiding density is 8 - 15 strands / cm, the diameter is 0.3 - 0.7 cm, the range of the diameter of the braided fiber is 50 - 100 tex, and the number of braided strands, braiding density, diameter, and thickness of the anchor body 2 change within the above ranges. The number of braided strands of the constraint part 1 is 16 - 32 strands, the braiding density is 20 - 40 strands / cm, the diameter is 0.2 - 0.4 cm. The constraint part 1 and the anchor body 2 have the same thickness, and the thickness is 0.1 - 0.3 cm, and the range of the diameter of the braided fiber is 50 - 100 tex; the number of braided strands, braiding density, diameter, and thickness of the constraint part 1 and the anchor body 2 change within the above ranges; the length of the constraint part 1 is L1, the length of the anchor body 2 is L2, and L2 ≥ 5L1, L2 = 1 - 2 cm, or L2 = 1.5 cm.

[0046] After the multiple anchor bodies 2 are fastened together, a receiving space 21 for bone tissue to enter is formed between adjacent two anchor bodies 2. After the bone tissue grows, it enters the receiving space 21 for filling, 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 bone tissue is tightened during implantation, the friction between the anchor body 2 and the bone tissue can be increased, improving the stability of the anchor structure. The etching treatment includes common etching modification methods such as etching with acidic solution, etching with organic solution, electrochemical anodic oxidation, plasma treatment, microwave radiation, and ultrasonic etching.

[0047] The anchor body 2 includes a dense area 23 and a loose area 24 located on the side of the dense area 23 close to the accommodation space 21. The weaving density of the dense area 23 is greater than that of the loose area 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 one end close to the constraint part 1. That is, the weaving density of the anchor body 2 at the same position along its own axis on the side close to the accommodation space 21 is greater than that on the side far from the accommodation space 21. When the suture 3 is pulled, the loose area 24 deforms first with the dense area 23, that is, the end of the anchor body 2 far from the constraint part 1 bends towards the inside of the accommodation space 21, so that the accommodation space 21 is more easily formed.

[0048] On the constraint part 1 and on both sides of its own axis, a plurality of through holes 12 are arranged at intervals along its own axis. On the anchor body 2 and on both sides of its own axis, a plurality of passage holes 25 are arranged at uniform intervals along its own axis. A through cavity 11 for only the two ends of the suture 3 to pass through is formed in the constraint part 1, so that the two ends of the suture 3 can be closely attached to the through cavity 11, increasing the contact area between the suture 3 and the through cavity 11, that is, increasing the friction force on the suture 3.

[0049] The anchor body 2 is made of 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 material of the constraint part 1 is silicone rubber, polyurethane, polytetrafluoroethylene fiber, and a flexible elastic tube is formed by weaving; the suture 3 is a thread or a flat belt, and the material is an non-absorbable material ultra-high molecular weight polyethylene with a molecular weight of 3 million to 6 million.

[0050] One end of the suture 3 penetrates into the through cavity 11, and then passes through at least two through holes 12, so that after the suture 3 passes out of the constraint part 1, it penetrates into the constraint part 1 again, and then the suture 3 penetrates into one of the anchor bodies 2. The suture 3 passes through at least two passage holes 25 on the same anchor body 2, so that after the suture 3 passes out of the anchor body 2, it penetrates into the anchor body 2 again, that is, the suture 3 passes out of the same anchor body 2 and then penetrates into the same anchor body 2 to form a fastening section 31, and at least one fastening section 31 is formed on one anchor body 2.

[0051] Next, the suture 3 passes through the passage hole 25 near one side of the adjacent anchor body 2 and moves to the outside of the anchor body 2, thus passing through one anchor body 2. Then, the same method is used to pass through multiple anchor bodies 2. When the suture 3 exits, the fastening sections 31 on two adjacent anchor bodies 2 are connected to each other. At the same time, when the suture 3 passes through the anchor body 2, it gradually approaches from the end of the anchor body 2 close to the restraint part 1 to the end of the anchor body 2 away from the restraint part 1. Finally, the suture 3 exits from the end of one of the anchor bodies 2 away from the restraint part 1, that is, the suture 3 passes through the passage hole 25, and then the suture 3 penetrates into the anchor body 2 from the end of an adjacent anchor body 2 away from the restraint part 1. Similarly, the suture 3 passes through the passage hole 25, and the suture 3 passes through two passage holes 25 to form a connecting section 32. Then, the process of passing through multiple anchor bodies 2 is repeated. Finally, the suture 3 enters the restraint part 1 through one of the anchor bodies 2. Then, the suture 3 continues to pass through at least two through holes 12, so that after the suture 3 exits from the restraint part 1 and then penetrates into the restraint part 1 again, the two ends of the suture 3 are tightened and knotted, so that the knot is located in the through cavity 11 after knotting. At the same time, after the suture 3 passes through the through hole 12, it can prevent the knot from slipping.

[0052] The cooperation of the fastening section 31 and the connecting section 32 makes multiple anchor bodies 2 fastened together as a whole. And the connecting section 32 pulls the ends of the anchor bodies 2 away from the restraint part 1 to abut against each other, and a positioning part 26 protruding outward is formed at the middle part of the anchor body 2. The tightening of the fastening section 31 makes the anchor body 2 recess inward to form a recessed part 27. Due to the inward movement of the anchor body 2, the anchor body 2 is extruded, and a protruding part 28 protruding outward is formed at a local part of the anchor body 2. At the same time, after the suture 3 is tightened and knotted, it can also make the restraint part 1 form an uneven plane. After the bone tissue grows, it wraps around the anchor body 2. The bone tissue extends into the recessed part 27 and adheres to the positioning part 26 and the protruding part 28. The bone tissue can also extend into the recess on the restraint part 1 and adhere to the restraint part 1, thereby further improving the stability of the anchor structure.

[0053] First, use an inserter to implant the anchor body 2 with the suture 3 and the restraint part 1 into the bone, that is, put them into the installation hole opened on the bone; pull out the inserter, and the anchor body 2 and the restraint part 1 stay in the bone; after tightening the two ends of the suture 3 and knotting, under the action of the pulling force of the anchor body 2, it contracts and folds into a ball at the same time. The ends of the anchor body 2 away from the restraint part 1 abut 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 as a whole to form a larger nodule. After the bone tissue grows, it wraps around the nodule formed by the anchor structure, thereby further improving the stability of the anchor structure.

[0054] The surface of the anchor body 2 is formed with a treated surface for increasing friction through etching treatment. The treated surface increases the friction between the anchor body 2 and bone tissue, making it more firmly fixed after tightening. After the constraint part 1 pulls the suture 3, its elastic contraction force is used to achieve the purpose of constraining the suture 3, thereby realizing the fixation of the all-suture 3 anchor in bone tissue. The inserter is a prior art and will not be elaborated here.

[0055] The working principle of the embodiment of the present application is as follows:

[0056] First, use the inserter to implant the anchor body 2 with the suture 3 passed through and the constraint part 1 into the bone. After pulling out the inserter, the anchor body 2 and the constraint part 1 remain in the bone. After tightening both ends of the suture 3 and tying a knot, the anchor body 2 is fastened into one body, forming a larger nodule. After bone tissue grows and wraps around the nodule, the stability of the anchor structure is further improved. At the same time, due to the etching treatment on the surface of the anchor body 2, the friction between the anchor body 2 and bone tissue is increased, making it more firmly fixed after tightening, thereby improving the stability of the anchor structure.

[0057] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within 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 concave inward to form a concave section (27) and causes the anchor body (2) to be partially squeezed to form a protruding section (28) protruding outward. 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).

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) 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.

8. The full suture anchor according to claim 1, 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.

9. 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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