A double-hollow tube braided full suture anchor

Abstract

The present invention provides a double-hollow tube braided all-suture anchor, belonging to the technical field of all-suture anchors, which includes a tube and a suture. The tube is a hollow braided structure. Two tubes are arranged in parallel and cross-connected to form a cross point. The suture penetrates into one end of the first tube, passes through the cross point and then penetrates out from the other end of the first tube. Subsequently, the suture penetrates into one end of the second tube close to the penetrating end of the first tube, passes through the cross point and then penetrates out from the other end of the second tube; both ends of the tube are hardened. The implantation method of the present invention is simple, the required bone tunnel diameter is small, the amount of autologous bone to be removed is small, the damage to the human body is small, and the overall structure is simple, the operation is convenient, the fixation is firm after implantation, and the folded mass formed when the suture is tightened is uniform, effectively ensuring the uniform and stable anti-pull-out force of the product, and also facilitating operations such as postoperative repair, patching, and replacement.

Description

Technical Field

[0001] The present invention belongs to the technical field of all-suture anchors, and in particular relates to a double-hollow tube braided all-suture anchor. Background Art

[0002] During the repair of the injury at the junction of soft tissue and bone tissue, anchors are usually used to fix the soft tissue. Its essence is that the anchor is implanted in the human matrix or abuts against the matrix to provide a reliable attachment position for the suture. For example, the suture-anchored technology made of titanium alloy, PEEK (polyetheretherketone) and polylactic acid materials is widely used in rotator cuff injury, glenoid labrum injury, proximal femoral tendon injury, superior labrum anterior and posterior (SLAP) injury of the shoulder joint, ulnar collateral ligament injury reconstruction, scapholunate ligament repair, triangular fibrocartilage repair and other surgical procedures. Such anchors are of hard structure, generally made by injection molding or machining, and their physical shape is similar to that of a screw. After the anchor is screwed into the human matrix, the suture pre-loaded on the anchor fixes the soft tissue on the surface of the bone tissue by bundling and tightening the suture, thereby completing the repair of the damaged tissue.

[0003] There are some deficiencies and defects in the use of such hard-structured anchors. Their implanted bone tunnels are relatively large, the amount of bone removed is large, and postoperative repair and patching are difficult. In addition, after the metal anchor is implanted, it is easy to cause inflammation and bone lysis, resulting in loosening and falling off of the screw-in point of the anchor and fixation failure. For absorbable anchors such as polylactic acid, due to uncontrollable factors such as individual differences in the human body, the degradation period of the anchor is too small, and it cannot provide sufficient fixation strength within the required period of fixation and healing, resulting in secondary problems such as synovitis and bone lysis, and surgical failure.

[0004] In recent years, soft suture anchors have been developed by braiding soft materials such as sutures. They can be deformed to remain in a pre-formed bone hole so that their diameter increases to a size larger than the diameter of the bone hole, thus staying in cancellous bone and under the bone cortex. It is a new type of all-suture anchor technology with a series of advantages. Nevertheless, there are still certain deficiencies and defects in the prior art. Either it requires a bone tunnel size twice the diameter when entering for the first time, which takes twice the time and greatly affects the efficiency when entering the bone tunnel and the surgical effect; or it cannot ensure that the suture and the wire tube form a closed structure that is completely symmetrical left and right when entering the bone tunnel, and thus cannot ensure that the folded mass formed when the suture is tightened is uniform, and thus cannot ensure the uniform and stable anti-pull-out force of the product. Summary of the Invention

[0005] In view of this, the present invention aims to provide a double-hollow tube braided all-suture anchor, which can solve the above problems.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows: A double-hollow tube braided full suture anchor, comprising a tube and a suture. The tube is a hollow braided structure. Two tubes are arranged in parallel and cross-connected to form a cross point. The suture penetrates into one end of the first tube, passes through the cross point and then penetrates out from the other end of the first tube. Subsequently, the suture penetrates into one end of the second tube near the penetrating end of the first tube, passes through the cross point and then penetrates out from the other end of the second tube; both ends of the tube are hardened.

[0007] Further, the tube is braided by a braiding machine or a weft knitting machine, with a wire diameter range of 1 mm - 30 mm, a braiding density of 10 - 100 PPI, a hardening temperature of 50 - 300 °C, and the length range of the hardened hollow tube: 10 mm - 50 mm.

[0008] Further, the suture is a suture or a tape, and the material is a medical polymer material, including absorbable materials such as polyglycolic acid (PGA), polylactic acid (PLA), polydioxanone (PDO), or polyglycolic acid - lactic acid (PGLA), and non - absorbable materials such as polypropylene, polyethylene, nylon 6, nylon 66, polyester, or polytetrafluoroethylene (PTFE).

[0009] Further, the material of the tube is a non - absorbable material such as polypropylene, polyethylene, nylon 6, nylon 66, polyester, or polytetrafluoroethylene (PTFE).

[0010] Further, the cross point is located at the 1 / 3 division point and 2 / 3 division point of the tube, and the tube can be trisected through the cross point; the cross point can also be located at the quarter division point or the fifth division point of the tube, so as to achieve the quartering or fifth - dividing of the tube.

[0011] Further, after the suture is threaded through the tube, the two tubes are left - right symmetric.

[0012] Further, the suture passes through the two tubes in sequence, and when the suture passes through the cross point, it avoids mutual entanglement.

[0013] Compared with the prior art, the double - hollow tube braided full suture anchor of the present invention has the following advantages: All materials used in the present invention are braided polymer materials, which belong to a kind of full suture anchor. It uses a pusher to directly push into the bone tunnel instead of a screw - in type. The implantation method is simple, the required bone tunnel diameter is small, the amount of autologous bone to be removed is small, the damage to the human body is small, and the overall structure is simple, the operation is convenient, the fixation is firm after implantation, and the folding mass formed when the suture is tightened is uniform, thus effectively ensuring the uniform and stable anti - pull - out force of the product, and also facilitating operations such as postoperative repair, repair, and replacement. Description of the Drawings

[0014] The accompanying drawings, which form a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0015] Figure 1 is a schematic structural diagram before the implantation of the present invention;

[0016] Figure 2 is a schematic structural diagram after the implantation and tightening of the suture of the present invention.

[0017] Explanation of reference numerals in the drawings:

[0018] 1. Wire tube; 2. Suture; 3. Intersection point; 4. Positioning hole. Detailed implementation manners

[0019] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] As Figure 1 and Figure 2As shown in the figure, the present invention is a double-hollow tube braided full suture anchor, including a tube 1 and a suture 2. The tube 1 is a hollow braided structure. The two tubes 1 are arranged in parallel and cross-connected to form a cross point 3, which can ensure that the suture 2 and the tube 1 form a closed structure that is completely symmetrical left and right when entering the bone tunnel. Furthermore, when the suture 2 is tightened, the formed folded mass is uniform, thus effectively ensuring the uniform and stable anti-pull-out force of the product. The suture 2 penetrates into one end of the first tube 1, passes through the cross point 3 and then penetrates out from the other end of the first tube 1. Subsequently, the suture 2 penetrates into one end of the second tube 1 close to the penetration end of the first tube 1, passes through the cross point 3 and then penetrates out from the other end of the second tube 1. The two ends of the tube 1 are hardened, which can effectively prevent the suture 2 from being damaged and having hair filaments at the edges during the threading process.

[0024] The tube 1 is braided by a braiding machine or a weft knitting machine, with a wire diameter range of 1 mm - 30 mm, a braiding density of 10 - 100 PPI, a hardening treatment temperature of 50 - 300 °C, and the length range of the hardened hollow tube: 10 mm - 50 mm. Preferably, a hollow tube 1 with a wire diameter of 10 mm and a PPI of 50 made of ultra-high molecular weight polyethylene material is braided by a braiding machine. The hardening treatment at both ends of the tube 1 is: hardening at both ends at 150 °C to obtain a shearing length of 20 mm.

[0025] The suture 2 is a suture or a tape, and the material is a medical polymer material, including absorbable materials such as polyglycolic acid (PGA), polylactic acid (PLA), poly-p-dioxanone (PDO), or polyglycolic acid and lactic acid (PGLA), and non-absorbable materials such as polypropylene, polyethylene (including ultra-high molecular weight polyethylene), nylon 6, nylon 66, polyester, or polytetrafluoroethylene (PTFE), etc.

[0026] The material of the tube 1 is non-absorbable materials such as polypropylene, polyethylene (including ultra-high molecular weight polyethylene), nylon 6, nylon 66, polyester, or polytetrafluoroethylene (PTFE), etc.

[0027] The cross point 3 is located at the 1 / 3 division point and 2 / 3 division point of the tube 1. Through the cross point 3, the tube 1 can be trisected. The equal division structure can ensure that when the suture 2 is stretched subsequently, multiple braided masses of the same size are formed at the cross point 3 of the tube 1. At the same time, the diameter of the braided mass is much larger than the diameter of the positioning hole 4, thereby realizing the fixation of the full suture anchor at the bone tissue repair site. The cross point 3 can also be located at the quarter division point or the fifth division point of the tube 1, thereby realizing the quarter or fifth division of the tube 1.

[0028] After the suture 2 is threaded through the wire tube 1, the two wire tubes 1 are symmetric left and right, which can ensure that the folded mass formed when the suture 2 is tightened is uniform, thus effectively ensuring the uniform and stable anti-pull-out force of the product.

[0029] The suture 2 passes through the two wire tubes 1 in sequence, and at the same time, when the suture 2 passes through the intersection point 3, it is prevented from being entangled with each other, thus effectively avoiding the suture 2 from being knotted at the intersection.

[0030] In the actual working process, first, a pusher is used to implant the wire tube 1 threaded with the suture 2 into the positioning hole 4 on the bone tissue to be repaired. The two ends of the wire tube 1 tighten the suture 2 at the same time. The hollow braided wire tube 1 deforms under the drive of the tensile force, and the braided structure shrinks into a mass, forming three mass-shaped braided fabrics with the same size and a diameter range much larger than the diameter range of the positioning hole 4 at the two intersection points 3 and the positioning hole 4 respectively, thus realizing the fixation of the full suture anchor at the bone tissue repair site. The pusher is a prior art.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double-hollow tube braided full suture anchor, characterized in that: It includes a tube (1) and a suture (2). The tube (1) is a hollow braided structure. Two tubes (1) are arranged in parallel and cross-connected to form a cross point (3), which can ensure that the suture (2) and the tube (1) form a closed structure that is completely symmetrical left and right when entering the bone tunnel. The suture (2) penetrates into one end of the first tube (1), passes through the cross point (3) and then penetrates out from the other end of the first tube (1). Subsequently, the suture (2) penetrates into one end of the second tube (1) close to the penetrating end of the first tube (1), passes through the cross point (3) and then penetrates out from the other end of the second tube (1); both ends of the tube (1) have been hardened. The cross point (3) is located at the 1 / 3 division point and 2 / 3 division point of the tube (1). Through the cross point (3), the tube (1) can be trisected; the cross point (3) can also be located at the quarter division point or fifth division point of the tube (1), so as to achieve the quartering or fifth division of the tube (1). The suture (2) passes through the two tubes (1) in sequence, and the suture (2) avoids entanglement with each other when passing through the cross point (3).

2. A double-hollow tube braided full suture anchor according to claim 1, characterized in that: The tube (1) is braided by a knitting machine or a weft knitting machine, its wire diameter ranges from 1 mm to 30 mm, the knitting density is 10-100 PPI, the hardening temperature is 50-300 °C, and the length range of the hardened hollow tube is: 10 mm-50 mm.

3. A double-hollow tube braided full suture anchor according to claim 1, characterized in that: The suture (2) is a suture or a tape, and the material is a medical polymer material, including absorbable materials such as polyglycolic acid PGA, polylactic acid PLA, poly-p-dioxanone PDO or polyglycolide-lactide PGLA, and non-absorbable materials such as polypropylene, polyethylene, nylon 6, nylon 66, polyester or polytetrafluoroethylene PTFE.

4. A double-hollow tube braided full suture anchor according to claim 2, characterized in that: The material of the tube (1) is a non-absorbable material such as polypropylene, polyethylene, nylon 6, nylon 66, polyester or polytetrafluoroethylene PTFE.

5. A double-hollow tube braided full suture anchor according to claim 1, characterized in that: After the suture (2) is threaded through the tube (1), the two tubes (1) are symmetrical left and right.

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