Self-locking knotting-free full-suture anchor

Abstract

The invention discloses a self-locking knotting-free full-suture anchor, and relates to the technical field of medical instruments, the self-locking knotting-free full-suture anchor comprises a suture anchor and a suture penetrating through the suture anchor, a plurality of suture penetrating holes are formed in the suture anchor, and the suture sequentially penetrates through the suture penetrating holes alternately from inside to outside. The two ends of the suture are located on the same side of the suture anchor, an auxiliary line penetrating hole is formed in the suture anchor, and an auxiliary line penetrates through the auxiliary line penetrating hole, so that operation steps in an operation can be reduced, a knotless product has better biocompatibility, and the probability of inflammation is reduced; the suture for knotting-free fixation is a suture ring formed by assembling hollow sutures, so that the implementation mode is simpler; the two suture lines play a fixing role at the same time, and cutting damage to soft tissue is smaller; as the far end of the suture passes through the gap between the suture anchor and the suture, the suture can play a self-locking role after being tightened, and the fatigue resistance of the product is higher.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a self-locking knot-free full suture anchor. Background Art

[0002] Wire anchor products are now commonly used instruments for bone and soft tissue injury repair and fixation. Traditional hard anchors are large in size and have a high risk of causing bone damage. Metal anchors may also cause some inconvenience to the daily life of patients. Full suture anchors are an emerging soft anchor with a smaller size, which reduces the damage to the bone during implantation. They are soft in texture and have better biocompatibility.

[0003] Conventional wire anchors generally need to be knotted and fixed after implantation. Wire anchors are often used for fixation and repair in labrum injury repair surgery. Taking the full suture anchor as an example, when using it, first open a bone tunnel, insert the full suture anchor into the bone tunnel, pull the suture to complete the fixation of the anchor in the bone tunnel, and then tie a knot and fix it after the distal end of the suture passes through the damaged soft tissue. Currently, most of the full suture anchor products on the market are non-knot-free products. Non-knot-free products require the formation of a knot when fixed. The knot may cause friction with the tissue and cause inflammation, and the knotting operation steps during the operation are cumbersome. The full suture anchor, thanks to its soft material, can be designed as a knot-free structure. The structure of the knot-free product is generally that the suture and the auxiliary line pass through the round sheath suture anchor together, and then the suture is braided and closed. The current knot-free full suture anchor products generally have a more complex braiding structure and are at risk of fatigue failure. Summary of the invention

[0004] Purpose of the invention: The technical problem to be solved by the present invention is to provide a self-locking knot-free full suture anchor, which solves the problem that the existing wire anchor needs to be knotted to be fixed during surgery.

[0005] Technical Solution

[0006] To solve the above problems, the technical solution provided by the present invention is:

[0007] A self-locking knot-free full suture anchor comprises a suture anchor and a suture passing through the suture anchor, wherein the suture anchor is provided with a plurality of suture perforations, the suture passes through the plurality of suture perforations alternately inside and outside, both ends of the suture are located on the same side of the suture anchor, the suture anchor is provided with an auxiliary line perforation, an auxiliary line is passed through the auxiliary line perforation.

[0008] Furthermore, the suture anchor is braided from polyethylene or polyester yarn.

[0009] Furthermore, a suture loop is provided at any end of the suture, and an auxiliary line loop is provided at any end of the auxiliary line.

[0010] Furthermore, the suture anchor is a thread belt, and one of the auxiliary thread perforations is provided on the suture anchor. There are six suture perforations, and the six suture perforations are arranged in sequence and equidistantly on the suture anchor.

[0011] Furthermore, the suture anchor is a hollow wire tube, the suture through-holes are respectively arranged on the inner side surface of the suture anchor and the outer side surface of the suture anchor, and two suture through-holes are symmetrically arranged on the inner side surface of the suture anchor and the outer side surface of the suture anchor.

[0012] Furthermore, the two suture through-holes located on the inner side of the suture anchor are close to two ends of the suture anchor, and the two suture through-holes located on the outer side of the suture anchor are close to the center of the suture anchor.

[0013] Furthermore, the suture anchor is provided with four auxiliary line perforations, two of which are respectively provided on the inner and outer surfaces of the suture anchor, the auxiliary line perforations on the inner surface of the suture anchor share the same opening with the suture perforations on the inner surface of the suture anchor, the two auxiliary line perforations on the outer surface are arranged on the inner sides of the two suture perforations on the outer surface of the suture anchor, and the two auxiliary line perforations on the outer surface are symmetrically and eccentrically arranged.

[0014] Furthermore, the suture anchor is a line belt, the suture perforations are double rows of suture perforations arranged in parallel, each row is provided with six suture perforations, both ends of the suture alternately penetrate the suture perforations on the same side, and the sutures in the two rows of suture perforations do not cross.

[0015] Furthermore, the end of the suture without the suture loop passes through the suture loop.

[0016] A method for using a self-locking knot-free full suture anchor comprises the method for using the self-locking knot-free full suture anchor described above: after the suture anchor is inserted into a bone tunnel in conjunction with an auxiliary instrument, the suture is turned around soft tissue and connected to the auxiliary line loop of the auxiliary line, the auxiliary line at one end without the auxiliary line loop is pulled so that the auxiliary line pulls the suture through the auxiliary line perforation, and the direction is turned to the opening direction of the suture anchor, the distal end of the suture is tightened, the suture anchor contracts, the suture anchor will deform according to the force direction of the suture in the suture perforation on the suture anchor, and the suture loop will pull the suture so that the suture locks the soft tissue, thereby completing the contraction, deformation and fixation of the suture anchor.

[0017] Beneficial Effects

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The technical solution provided by the present invention can reduce the number of operating steps during surgery, and the knotless product has better biocompatibility and reduces the probability of inflammation; the suture used for knot-free fixation is a wire loop assembled from hollow sutures, and the implementation method is simpler; the suture has two wires that play a fixing role at the same time, and the cutting damage to soft tissue is smaller; because the distal end of the suture passes through the gap between the suture anchor and the suture, the suture can play a self-locking role after being tightened, and the product has greater fatigue resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the suture anchor structure of Example 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the use status of Example 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the positions of suture perforation and auxiliary thread perforation in Example 1 of the present invention;

[0023] Figure 4 This is a schematic diagram of the suture structure of Example 1 of the present invention;

[0024] Figure 5 It is a schematic diagram of the suture passing through the auxiliary line perforation in Example 1 of the present invention;

[0025] Figure 6 This is a schematic diagram of the deformation and fixation of the suture anchor according to Example 1 of the present invention;

[0026] Figure 7 This is a schematic diagram of the suture anchor structure of Example 2 of the present invention;

[0027] Figure 8 This is a schematic diagram of the suture anchor structure of Example 3 of the present invention. DETAILED DESCRIPTION

[0028] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] Combined with Figure 1-6 A self-locking, knot-free full suture anchor consists of a suture anchor 1 and a suture 2 that passes through the suture anchor 1 multiple times. The suture anchor 1 is a line belt woven from polyethylene or polyester yarn. Since the suture anchor 1 is woven from polyethylene or polyester yarn, it is a soft structure. When in use, the suture anchor 1 cooperates with an inserter, and the inserter deforms the suture anchor 1, thereby turning the suture anchor 1 into a "U"-shaped line belt.

[0031] The suture anchor 1 is provided with a plurality of suture perforations 11 . Since the suture anchor 1 is a woven body, many gaps and pores are formed on the suture anchor 1 due to the loose fit of the yarns. The suture anchor 1 can directly use the gaps between the yarns as the suture perforations 11 .

[0032] The suture perforations 11 of the suture anchor 1 are arranged evenly in sequence. There are six suture perforations 11, which are located in the middle of the short side of the suture anchor 1 and are arranged parallel to the long side of the suture anchor 1. The suture perforations 11 are arranged evenly in the center so that the suture anchor 1 is subjected to uniform force.

[0033] The suture anchor 1 is also provided with an auxiliary thread through hole 12, which is located in the middle of the long side of the suture anchor 1 and is eccentrically arranged. The auxiliary through hole 12 is located close to the long side of the suture anchor 1 on either side.

[0034] The suture 2 is a thread body with a suture loop at either end. The suture 2 is provided with a suture loop at one end and a suture end at the other end, thereby facilitating the suture end to pass through the suture loop.

[0035] In this embodiment, the suture 2 is a hollow suture, and any side of the suture 2 is a wire loop formed by wrapping the hollow wire body and inserting it into its own wire body. The wire loop is preferably assembled, and an opening hole is set on one side of the hollow suture, and the suture at the end of the hollow suture passes through the opening hole into the hollow space in the suture, thereby forming a wire loop. In other embodiments, a method of forming the wire loop can also be selected, including weaving, gluing and other methods.

[0036] When suture 2 is inserted into a hollow suture to form a loop, suture 2 is divided into a loop part, an overlapping part, and a single part. In actual use, for the convenience of medical staff, the loop part can be extended as much as possible. The function of the loop is to allow the end of suture 2 without a loop to pass through the loop, so that after suture 2 is tightened, the loop can locally tighten the suture.

[0037] The suture 2 passes through all the suture perforations 11. The suture 2 passes through the suture anchor 1 starting from the suture perforation 11 at any end of the suture anchor 1, and passes through all the suture perforations 11 in sequence, and is led out from the suture perforation 11 at the other end. The penetration direction of the suture 2 follows the suture perforations 11 on the suture anchor 1 and switches alternately in sequence. The suture 2 needs to satisfy that the suture loop and the suture end at the other end are located on the same side of the suture anchor 1.

[0038] Since the suture anchor 1 is in a "U" structure when in use, the suture loop and the suture end at the other end are both located on the inner side of the suture anchor 1. The suture 2 is passed through the suture perforation 11 with the suture anchor 1 in a "U" structure in the following manner: when the suture 2 passes through the first suture perforation 11 located at the end, the suture 2 passes through the inner side of the suture anchor 1 toward the outer side of the suture anchor 1, and then turns around and passes through the second suture perforation 11 adjacent to the initial suture perforation 11 from the outer side of the suture anchor 1 toward the inner side of the suture anchor 1. After each suture perforation 11 is passed through, the suture 2 turns around and passes through six suture perforations 11 in sequence. Through the above-mentioned threading method, the suture 2 enters the suture anchor 1 from the inside of the suture perforation 11 at one end toward the outside, and passes through the suture anchor 1 from the outside toward the inside of the suture perforation 11 at the other end. After the suture 2 passes through all the suture holes 12 , both ends of the suture 2 are located inside the suture anchor 1 .

[0039] After the suture 2 passes through the suture perforation 11 , the end of the suture 2 without the loop passes through the loop of the suture 2 and is held, that is, the single part of the suture 2 passes through the loop of the loop part of the suture 2 .

[0040] In practical applications, the loop portion of the suture 2 is relatively long, and the loop can pass through part or all of the suture perforations 11, thereby facilitating the passing of the single portion of the suture therethrough.

[0041] An auxiliary line 3 is passed through the auxiliary line perforation 12. The auxiliary line 3 is used to help the suture 2 pass through the auxiliary line perforation 12 when in use. The auxiliary line perforation 12 can also directly use the gap on the suture anchor 1. The auxiliary line 3 takes the opening direction of the suture anchor 1 as the starting point, passes through the auxiliary line perforation 12, turns around and goes back to the opening direction of the suture anchor 1 again.

[0042] An auxiliary wire loop 31 is provided at any end of the auxiliary wire 3, and the auxiliary wire loop 31 is woven by the auxiliary wire 3 itself. The auxiliary wire loop 31 is used to connect with the end of the suture 2 without a loop, so as to facilitate medical staff to pull the suture 2 through the auxiliary wire 3.

[0043] The end of the auxiliary line 3 without the loop passes through the auxiliary line perforation 12, and the end of the auxiliary line 3 without the loop passes through the auxiliary line perforation 12 from one side of the suture anchor, and then turns around and returns to the starting side of the auxiliary line 3.

[0044] When the suture anchor 1 is a "U"-shaped structure, the auxiliary line 3 passes from the inside of the suture anchor 1 to the outside of the suture anchor 1, passes through the auxiliary line perforation 12, turns around and passes through the gap between the suture anchor 1 and the suture 2, and the auxiliary line 3 approaches the long side of the suture anchor 1 on the side away from the auxiliary line perforation 12 of the suture anchor 1, and returns to the opening direction of the suture anchor 1.

[0045] The specific usage is:

[0046] After the suture anchor 1 is inserted into the bone tunnel with the auxiliary instrument (inserter), the suture 2 is turned around the soft tissue and connected to the auxiliary line loop of the auxiliary line 3. Then, with the help of the auxiliary line, the auxiliary line at the end without the auxiliary line loop is pulled to pull the suture through the auxiliary line perforation. The threading method of the suture and the auxiliary line is the same. After passing through the auxiliary line perforation, the suture 2 is turned to the opening direction of the suture anchor 1. At this time, the distal end of the suture 2 is tightened. As the suture 2 is pulled in, the suture anchor 1 contracts. The suture anchor 1 will deform according to the force direction of the suture 2 in the suture perforation 11 on the suture anchor 1, and the loop of the suture 2 will pull the suture 2 to lock the soft tissue. The suture anchor 1 will shrink, deform and be fixed under the pulling of the suture 2.

[0047] In other embodiments, one or more additional sutures are passed through the suture anchor in the same manner and at the same position; so that the product can be applied to rotator cuff tear surgery.

[0048] Example 2

[0049] like Figure 7 The self-locking knot-free full suture anchor of Example 2 consists of a suture anchor 1 and a suture 2 that passes through the suture anchor 1 multiple times. The suture anchor 1 is a hollow wire tube woven from polyethylene or polyester yarn. The suture anchor 1 is also "U"-shaped when in use, and the gap on the suture anchor 1 can also be used as a suture perforation 12. The suture perforations 12 on the suture anchor 1 are respectively arranged on the inner side surface of the suture anchor 1 and the outer side surface of the suture anchor 1. Two suture perforations 11 are symmetrically arranged on the inner side surface of the suture anchor 1 and the outer side surface of the suture anchor 1, respectively. The two suture perforations 12 located on the inner side surface of the suture anchor 1 are close to the two ends of the suture anchor 1, and the two suture perforations located on the outer side surface of the suture anchor 1 are close to the center of the suture anchor 1.

[0050] The suture anchor 1 is also provided with an auxiliary thread perforation 12, and two auxiliary thread perforations 12 are respectively arranged on the inner side and the outer side of the suture anchor 1. The auxiliary thread perforation located on the inner side and the suture perforation located on the inner side of the suture anchor 1 share the same opening, and the two auxiliary thread perforations located on the outer side are arranged on the inner side of the two suture perforations located on the outer side of the suture anchor 1, and the two auxiliary thread perforations located on the outer side are arranged symmetrically and eccentrically.

[0051] A suture loop is also provided on either end of the suture 2, and both ends of the suture 2 are also located on the same side. The suture 2 is inserted into the suture anchor 1 through the suture hole located on the inner side, and then passes out through the suture hole located on the outer side on the same side, and then again enters the suture anchor 1 through the suture hole located on the outer side on the other side, and then passes out through the suture hole located on the inner side on the other side.

[0052] An auxiliary line loop 31 is also provided on the auxiliary line 3, and the auxiliary line loop and the suture loop are located on the same side. The auxiliary line 3 is inserted into the suture anchor 1 through the auxiliary line perforation (i.e., the suture perforation) located on the inner side, and then passes out through the auxiliary line perforation located on the outer side on the same side, and then again enters the suture anchor 1 through the auxiliary line perforation located on the outer side on the other side, and then passes out through the auxiliary line perforation (i.e., the suture perforation) located on the inner side on the other side.

[0053] When the auxiliary line 3 enters the auxiliary line perforation on the other side from the auxiliary line perforation on one side located on the outer side of the suture anchor 1 , the auxiliary line passes through the gap between the suture anchor 1 and the suture 2 .

[0054] The method of use of this embodiment 2 is the same as that of embodiment 1. After the suture anchor 1 is inserted into the bone tunnel with the auxiliary instrument (inserter), the suture 2 is turned around the soft tissue, and the suture 2 is connected to the auxiliary line loop 31. The end of the auxiliary line without the loop is pulled, so that the suture follows the auxiliary line through the four auxiliary line perforations. After the suture 2 is pulled in, the suture deforms the suture anchor 1, and the loop of the suture 2 pulls the suture 2 so that the suture 2 locks the soft tissue, thereby completing the fixation.

[0055] Example 3

[0056] like Figure 8 The self-locking knot-free full suture anchor consists of a suture anchor 1 and a suture 2 wound on the suture anchor 1. The difference between Example 3 and Example 1 is that the suture perforations 12 are double-row suture perforations arranged in parallel. The double-row suture perforations in Example 3 are consistent with the suture perforations in Example 1 in position, and the thread gaps on the suture anchor 1 are also used as the suture perforations 12, and the two rows of suture perforations 12 are arranged in parallel and symmetrically.

[0057] The suture 2 is a thread body without a thread loop. When the suture 2 is inserted into the suture perforation, the two ends of the suture 2 are overlapped and then pass through all the suture perforations from the suture perforation 12 on the same side at the same time. The two ends of the suture 2 each only pass through the corresponding suture perforations 12 on the same straight line and will not cross each other. The perforation method of the two ends of the suture 2 is the same as the method of the suture passing through the suture perforation in Example 1.

[0058] Both ends of the suture 2 are inserted through the suture perforation on the same side of the inner side of the suture anchor 1 , and after all the suture perforations are passed through, they are inserted into the inner side of the suture anchor 1 again through the suture perforation on the other side of the inner side of the suture anchor 1 .

[0059] After the two ends of the suture 2 pass through the last suture perforation and enter the inner side of the suture anchor 1, the two ends of the suture 2 are combined into one thread, and the bent connection part of the suture 2 plays the same role as the suture loop. When the suture is a hollow suture, one end of the suture 2 passes through the opening on the other end into the hollow space inside the suture, thereby combining into one thread for easy passage through the loop.

[0060] The auxiliary line perforations and the arrangement of the auxiliary lines 3 in this embodiment are the same as those in the first embodiment.

[0061] After passing through the auxiliary line perforation, the auxiliary line 3 passes through the gaps between all the sutures 2 and the suture anchors 1 .

[0062] When used, the method of use of this embodiment 3 is the same as that of embodiment 1:

[0063] After the suture anchor 1 is inserted into the bone tunnel together with the auxiliary instrument (inserter), the suture 2 is turned around the soft tissue and connected to the auxiliary line loop of the auxiliary line. Then, with the help of the auxiliary line, it passes through the auxiliary line perforation and tightens the distal end of the suture 2. Under the tension of the suture 2, the suture anchor 1 is deformed, and the bent part of the suture 2 will pull the suture 2 so that the suture 2 locks the soft tissue, thereby completing the fixation.

[0064] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A self-locking knot-free full suture anchor, characterized in that: It comprises a suture anchor and a suture passing through the suture anchor, wherein the suture anchor is provided with a plurality of suture perforations, the suture passes through the plurality of suture perforations alternately inside and outside, both ends of the suture are located on the same side of the suture anchor, the suture anchor is provided with an auxiliary line perforation, and an auxiliary line passes through the auxiliary line perforation.

2. A self-locking knot-free suture anchor according to claim 1, characterized in that: The suture anchor is braided from polyethylene or polyester yarn.

3. A self-locking knot-free suture anchor according to claim 2, characterized in that: A suture loop is provided at any end of the suture, and an auxiliary line loop is provided at any end of the auxiliary line.

4. A self-locking knot-free suture anchor according to claim 3, characterized in that: The suture anchor is a line belt, and one of the auxiliary line perforations is provided on the suture anchor. There are six suture perforations, and the six suture perforations are arranged in sequence and equidistantly on the suture anchor.

5. The self-locking knot-free suture anchor according to claim 3, characterized in that: The suture anchor is a hollow wire tube, the suture perforations are respectively arranged on the inner side surface of the suture anchor and the outer side surface of the suture anchor, and two suture perforations are symmetrically arranged on the inner side surface of the suture anchor and the outer side surface of the suture anchor.

6. A self-locking knot-free full suture anchor according to claim 5, characterized in that: The two suture perforations located on the inner side of the suture anchor are close to two ends of the suture anchor, and the two suture perforations located on the outer side of the suture anchor are close to the center of the suture anchor.

7. A self-locking knot-free suture anchor according to claim 6, characterized in that: Four auxiliary line perforations are arranged on the suture anchor, and two auxiliary line perforations are respectively arranged on the inner side and the outer side of the suture anchor, the auxiliary line perforations located on the inner side of the suture anchor share the same opening with the suture perforations located on the inner side of the suture anchor, and the two auxiliary line perforations located on the outer side are arranged on the inner sides of the two suture perforations located on the outer side of the suture anchor, and the two auxiliary line perforations located on the outer side are centrally symmetrically and eccentrically arranged.

8. The self-locking knot-free suture anchor according to claim 2, characterized in that: The suture anchor is a line belt, and the suture perforations are double rows of suture perforations arranged in parallel, each row of the suture perforations is provided with six suture perforations, and the two ends of the suture alternately penetrate the suture perforations on the same side in sequence, and the sutures in the two rows of the suture perforations do not cross.

9. The self-locking knot-free suture anchor according to claim 3, characterized in that: The end of the suture without the suture loop passes through the suture loop.

10. A method for using a self-locking knotless suture anchor, characterized in that it includes the method for using the self-locking knotless suture anchor according to any one of claims 1 to 9: after the suture anchor is inserted into a bone tunnel with the aid of an auxiliary instrument, the suture is turned around soft tissue and connected to the auxiliary line loop of the auxiliary line, the auxiliary line at one end without the auxiliary line loop is pulled so that the auxiliary line pulls the suture through the auxiliary line perforation and turns the direction to the opening direction of the suture anchor, the distal end of the suture is tightened, the suture anchor contracts, the suture anchor will deform according to the force direction of the suture in the suture perforation on the suture anchor, and the suture loop will pull the suture so that the suture locks the soft tissue, thereby completing the contraction, deformation and fixation of the suture anchor.

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