Anchor nail with line

Abstract

The utility model discloses an anchor with a thread, which comprises an anchor body, the anchor body comprises a front end and a rear end, and the front end is a conical implanting end; the nail body comprises a first side wall and a second side wall; the containing groove is formed in the rear end and extends in the axial direction of the nail body; the two first threading holes are formed in the first side wall of the nail body at intervals; the first wiring trough is arranged between the two first threading holes; the two second threading holes are formed in the second side wall of the nail body at intervals; the second wire guide groove is arranged between the two second threading holes; and the first threading hole and the second threading hole are communicated with the accommodating groove. According to the anchor with the threads, due to the fact that the two sets of threading holes and the two sets of thread guide grooves are formed, the two threads in the anchor can be separated, the phenomena of winding and knotting of the threads are effectively avoided, and the risk that the anchor with the threads fails is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an anchor nail with a wire. Background Art

[0002] Sports medicine is a discipline that prevents and treats injuries related to physical exercise, focusing on the repair of soft tissues such as ligaments and tendons in combination with arthroscopic or minimally invasive surgery. The scope of treatment includes joint injuries and osteoarthritis of the knee, shoulder, foot, ankle, hip, elbow, wrist, etc. Sports medicine surgery uses implants such as screws, anchors, and titanium plates with loops to suture soft tissues such as ligaments and tendons and reconnect and fix them to bones to achieve functional reconstruction.

[0003] The wire anchor is a very small implant that uses sutures to reattach soft tissues such as tendons and ligaments to the bone surface to restore their anatomical structure. In clinical use, the corresponding hole-making tool is first used to make a hole to establish a suitable bone channel, and the anchor is implanted under the cortical bone through the anchor inserter. Sutures are used to fix the avulsed or torn soft tissue on the bone surface to achieve a repair effect.

[0004] Existing commonly used absorbable suture anchors usually adopt a hollow structure, with a threading hole and a wire groove set on the anchor head. Two sutures are set on the wire groove and pass through the threading hole and then pass out from the hollow inside of the anchor. Internal routing can effectively prevent suture wear and breakage, but there are also many problems. For example, the two sutures inside the anchor are very easy to be entangled or knotted due to frequent contact, resulting in loose fixation of soft tissue or fixation failure, affecting the surgical fixation effect; the absorbable wire groove has a small diameter and is prone to breakage, resulting in the risk of suture dislocation, affecting the growth rate and healing time of free bone and soft tissue, and severe cases may require a secondary revision.

[0005] Therefore, providing a wire anchor capable of separating two sutures to avoid entanglement of the sutures is a technical problem to be solved urgently by those skilled in the art. Utility Model Content

[0006] The utility model provides a wire anchor nail, which can separate two sutures inside the anchor nail by arranging two groups of threading holes and wire grooves, effectively avoiding the occurrence of entanglement and knotting of the sutures, and also reducing the risk of the wire anchor nail failing as a whole due to the breakage of one wire groove.

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0008] A wire anchor comprises a nail body, wherein the nail body comprises a front end and a rear end, wherein the front end is a tapered implantation end; the nail body comprises a first side wall and a second side wall;

[0009] A receiving groove is formed at the rear end and extends along the axial direction of the nail body.

[0010] Two first wire passing holes are arranged at intervals on the first side wall of the nail body.

[0011] A first wire guiding groove is arranged between the two first wire passing holes.

[0012] Two second wire passing holes are arranged at intervals on the second side wall of the nail body.

[0013] A second wire guiding groove is arranged between the two second wire passing holes.

[0014] Wherein, both the first wire passing hole and the second wire passing hole communicate with the receiving groove.

[0015] Furthermore, it further includes:

[0016] A hollow groove is coaxially arranged inside the nail body, communicates with the receiving groove, and is located between the first wire passing hole and the second wire passing hole.

[0017] Furthermore, the inner diameter of the hollow groove is smaller than the inner diameter of the receiving groove.

[0018] Furthermore, the two second wire passing holes are symmetrically arranged with respect to the first wire passing hole; the second wire guiding groove is symmetrically arranged with respect to the first wire guiding groove.

[0019] Furthermore, both the first wire guiding groove and the second wire guiding groove are cylindrical.

[0020] Furthermore, both the first wire guiding groove and the second wire guiding groove are quadrangular prism-shaped, and each edge is chamfered.

[0021] Furthermore, wire accommodating grooves are arranged along the axial direction on both the first wire guiding groove and the second wire guiding groove, and the wire accommodating grooves are located outside the nail body.

[0022] Furthermore, the length of the center connection line of the two first wire passing holes is 1 / 5 to 1 / 3 of the length of the nail body.

[0023] Furthermore, the side wall surfaces of the holes of the first wire passing hole and the second wire passing hole are set to be smooth arcs.

[0024] Furthermore, external threads are provided on the circumferential direction of the nail body, and a plurality of connection holes communicating with the receiving groove are provided on the nail body at the bottom of the thread groove of the external threads.

[0025] Furthermore, the length of the nail body is 2.5 - 20 mm; the wire - carrying anchor nail is made of absorbable material.

[0026] Advantages of the present utility model: The present utility model provides a suture - attached anchor, which is symmetrically provided with two groups of thread - passing holes and wire grooves, and can effectively separate two sutures located inside the anchor, avoiding the entanglement and knotting of the sutures inside the anchor and affecting the surgical operation. At the same time, due to the provision of two groups of wire grooves and thread - passing holes, even if a wire groove breaks and the suture slips out, there is still another wire groove and suture for fixation, improving the surgical efficiency and ensuring the effect of suture fixation. Brief Description of the Drawings

[0027] Figure 1 is the overall structure diagram of the suture - attached anchor of the present utility model;

[0028] Figure 2 is the schematic diagram of the structure on the other side of the suture - attached anchor of the present utility model;

[0029] Figure 3 is the longitudinal sectional view of the suture - attached anchor of the present utility model (the section is the mirror - symmetric plane of the first wire groove and the second wire groove);

[0030] Figure 4 is another longitudinal sectional view of the suture - attached anchor of the present utility model (this section is perpendicular to the section of Figure 3 ).

[0031] The reference numerals include:

[0032] 100 - nail body, 110 - front end, 120 - rear end

[0033] 130 - accommodation groove, 140 - first thread - passing hole, 141 - first wire groove

[0034] 150 - second thread - passing hole, 151 - second wire groove, 160 - external thread

[0035] 170 - hollow groove Detailed Embodiment

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] The utility model discloses a specific embodiment of a wire anchor, the key improvement of which is to optimize the structure of the wire anchor, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it mainly includes a nail body 100, and the nail body 100 includes a front end 110 and a rear end 120. The front end 110 is a tapered implantation end, and the sharp tapered structure makes it easier to implant into the bone tunnel. A receiving groove 130 is coaxially provided on the rear end 120, and the receiving groove 130 extends along the axial direction of the nail body 100, but does not penetrate the nail body 100. The receiving groove 130 is a hexagonal groove for use with an insertion tool. The nail body 100 includes a first side wall and a second side wall, and the first side wall and the second side wall are connected end to end and integrally formed to form the nail body 100. Two first threading holes 140 are arranged at intervals on the first side wall of the nail body 100 and are arranged close to the front end 110, and a first wire groove 141 is arranged between the two first threading holes 140. Two second threading holes 150 are arranged at intervals on the second side wall of the nail body 100, and a second wire groove 151 is arranged between the two second threading holes 150. Two groups of threading holes and guide grooves are distributed on both sides of the nail body 100 near the front end 110, and the first threading hole 140 and the second threading hole 150 are both connected with the receiving groove 130. One suture is sleeved on the first guide groove 141, and its two ends pass through the two first threading holes 140 and then pass out of the nail body 100 from the receiving groove 130; another suture is sleeved on the second guide groove 151, and its two ends pass through the two second threading holes 150 and then pass out of the nail body 100 from the receiving groove 130. Therefore, the two sutures are respectively located on both sides of the inner wall of the nail body 100, and there is no contact at the entanglement point, so there will be no entanglement or knotting, which will not affect the operation of the operation.

[0041] Preferably, the two sets of wire threading holes and wire grooves can be symmetrically distributed on the two side walls of the nail body 100, or asymmetrically distributed on the two side walls of the nail body 100. When the two sets of wire threading holes and wire grooves are symmetrically distributed, the central connection line of the two first wire threading holes 140 is parallel and symmetrical to the central connection line of the two second wire threading holes 150. When the two sets of wire threading holes and wire grooves are asymmetrically distributed, the central connection line of the two sets of wire threading holes can be parallel but asymmetric (that is, the two sets of wire threading holes and wire grooves are axially distributed at different heights), or non-parallel (that is, the two sets of wire threading holes and wire grooves are both relatively close to any connection point between the first side wall and the second side wall). Different distributions of the two sets of wire threading holes and wire grooves can all achieve the function of threading and avoiding entanglement, but the symmetrical structural distribution will be more convenient to adjust the position of the nail body 100 by adjusting the suture during implantation.

[0042] Preferably, the distribution method of the two first wire threading holes 140 and the two second wire threading holes 150 can be axially spaced (as Figure 1 shown), or circumferentially spaced. Both distribution methods can achieve the wire threading function in the above embodiments and will not knot.

[0043] The nail body 100 is preferably cylindrical, integrally formed, with a length of 2.5 - 50 mm and a diameter of 6 - 20 mm. It is made of an absorbable polymer material, and the suture is also made of an absorbable material, both of which can be metabolized and absorbed in the human body.

[0044] As Figure 3 shown, a hollow groove 170 is coaxially arranged near the front end 110 inside the nail body 100. The hollow groove 170 is coaxially arranged with the receiving groove 130 and communicates with each other. The hollow groove 170 is located between the first wire threading hole 140 and the second wire threading hole 150, and the inner diameter of the hollow groove 170 is smaller than the inner diameter of the receiving groove 130. The hollow groove 170 is used to connect the first wire threading hole 140, the second wire threading hole 150 and the receiving groove 130, and at the same time allows the growth of surrounding tissues to promote soft tissue healing.

[0045] As Figure 1 and Figure 4 shown, both the first wire groove 141 and the second wire groove 151 are cylindrical or quadrangular prism-shaped. When the first wire groove 141 and the second wire groove 151 are quadrangular prism-shaped, the edges of the quadrangular prism are all chamfered to reduce the cutting and wear of the suture. The side wall surfaces of the holes of the first wire threading hole 140 and the second wire threading hole 150 are set as smooth arcs, which can also avoid the wear of the suture. Due to the provision of two sets of wire grooves and wire threading holes, even if a wire groove breaks during the operation or after implantation, resulting in the suture coming out, there is still another wire groove and suture for fixing the soft tissue, effectively avoiding the failure of the operation and ensuring the effect of suture fixation.

[0046] In another embodiment, the length of the central connection line of the two first wire threading holes is 1 / 5 to 1 / 3 of the length of the nail body 100. Wire accommodating grooves are axially arranged on both the first wire groove 141 and the second wire groove 151. The central axis of the wire accommodating groove is parallel to the axial direction of the nail body 100, and the wire accommodating grooves are both located outside the nail body 100. The longitudinally arranged wire accommodating grooves are used to accommodate the suture, and the suture is fixed in the accommodating groove to prevent it from moving around.

[0047] In yet another embodiment, external threads 160 are circumferentially arranged on the nail body 100. The edges of the threads of the external threads 160 are all arc-shaped to avoid cutting tissues. A plurality of connection holes communicating with the accommodating groove 130 are formed in the nail body 100 at the root positions of the external threads 160. The connection holes can be filled with functional drugs. After the nail body 100 is implanted into the human body, the drugs can enter the surrounding tissues through the connection holes, effectively promoting the growth of the surrounding tissues.

[0048] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, many changes can be made in the specific implementation manners and application scopes according to the idea of the present invention. As long as these changes do not depart from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A suture - attached anchor, characterized in that, It includes a nail body (100), the nail body (100) includes a front end (110) and a rear end (120), and the front end (110) is a conical implantation end; the nail body (100) includes a first side wall and a second side wall; A receiving groove (130) is formed in the rear end (120) and extends along the axial direction of the nail body (100); Two first wire passing holes (140) are spaced apart on the first side wall of the nail body (100); A first wire groove (141) is arranged between the two first wire passing holes (140); Two second wire passing holes (150) are spaced apart on the second side wall of the nail body (100); A second wire groove (151) is arranged between the two second wire passing holes (150); Wherein, the first wire passing hole (140) and the second wire passing hole (150) both communicate with the receiving groove (130).

2. The wire - threaded anchor according to claim 1, wherein, It further includes: A hollow groove (170) is coaxially arranged inside the nail body (100), communicates with the receiving groove (130), and is located between the first wire passing hole (140) and the second wire passing hole (150).

3. The wire - carrying anchor bolt according to claim 2, wherein, The inner diameter of the hollow groove (170) is smaller than the inner diameter of the receiving groove (130).

4. The suture - attached anchor according to claim 3, wherein, The two second wire passing holes (150) are symmetrically arranged with respect to the first wire passing hole (140), and the second wire groove (151) is symmetrically arranged with respect to the first wire groove (141).

5. The wire - threaded anchor according to claim 3, wherein Both the first wire groove (141) and the second wire groove (151) are cylindrical.

6. The wire - carrying anchor bolt according to claim 5, wherein, Both the first wire groove (141) and the second wire groove (151) are quadrangular prismatic, and each edge is chamfered.

7. The suture - attached anchor according to claim 5 or 6, characterized in that, Axially arranged wire receiving grooves are provided on both the first wire groove (141) and the second wire groove (151), and the wire receiving grooves are located outside the nail body (100).

8. The wire - threaded anchor according to claim 7, wherein The length of the center connection line of the two first wire passing holes (140) is 1 / 5 to 1 / 3 of the length of the nail body (100).

9. The wire - threaded anchor according to claim 8, wherein, The side wall surfaces of the holes of the first wire passing hole (140) and the second wire passing hole (150) are set to be smooth arcs.

10. The wire - carrying anchor bolt according to claim 9, wherein, External threads (160) are circumferentially provided on the nail body (100), and a plurality of connection holes communicating with the receiving groove (130) are provided on the nail body (100) at the bottom of the teeth of the external threads (160).

Images