Knotless full suture anchor and implantation device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of knot-free full suture anchor and implant device. The knot-free full suture anchor includes anchor body, repair line and traction line, using flexible braided body fold as anchor body and make anchor body have open end and fold end, after repair line passes through anchor body, on the side of open end away from fold end, the first repair section of repair line is wound into prefabricated knot with traction line, traction line has free section and connecting section placed outside prefabricated knot, then by the second repair section of repair line or extraneous suture is sequentially passed through soft tissue and the connecting section of traction line, then the free section of traction line is pulled, the second repair section or extraneous suture is pulled along the traction path of traction line and passed through prefabricated knot, need not knot operation in operation, continue to pull prefabricated knot and drive anchor body to contract, to fix soft tissue, replace existing closed loop type whole circle contraction mode, avoid transition contraction, effectively reduce the risk of anchor body failure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a knotless, fully sutured anchor and implantation device. Background Technology

[0002] Knotless suture anchors are advanced implantation devices used in sports medicine and orthopedic surgery. Through special design, they can fix soft tissues (such as ligaments and tendons) to bone tissue without knots, while using a full suture structure to reduce damage to bone.

[0003] In existing technologies, knotless suture anchors use sutures that are wrapped around the entire anchor body. This creates a closed loop structure within the anchor body, which encircles the soft tissue and uses friction between the suture and the anchor body to achieve knotless fixation. However, the closed loop structure can easily cause excessive contraction or displacement of the anchor body within the bone tunnel, leading to anchor failure and a higher surgical risk.

[0004] Therefore, there is an urgent need to provide a knotless, fully sutured anchor and implantation device to solve the problems of existing closed-loop full-circumference contraction that easily leads to anchor failure and high surgical risks. Utility Model Content

[0005] The purpose of this invention is to provide a knotless, fully sutured anchor and implantation device to solve the problems of existing closed-loop, full-circle shrinkage anchors that easily lead to anchor failure and high surgical risks.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a knotless suture anchor, which includes an anchor body, a repair suture, and a traction suture. The anchor body is made of a flexible braided material folded in half for implantation into bone tissue. The anchor body has an open end and a folded end. The repair suture movably passes through the anchor body and has a first repair section and a second repair section located outside the open end. Both the first repair section and the second repair section are located on the side of the open end away from the folded end.

[0008] The first repair segment and the traction suture are wound into a pre-made knot. The traction suture has a free segment and a connecting segment outside the pre-made knot. The second repair segment or external suture is used to pass through the soft tissue and the connecting segment in sequence. The free segment is used to be subjected to tension to pull the second repair segment or the external suture along the traction path of the traction suture through the pre-made knot.

[0009] As an optional technical solution for knotless, fully sutured anchors, the first repair section has a loop knot, the loop knot having at least two holes, and the prefabricated knot being formed by the traction line passing through all the holes in sequence and then passing back through all the holes in reverse sequence.

[0010] As an optional technical solution for knotless full-stitch anchors, the first repair section is provided with a coil, and the loop is formed by the coils rotating and overlapping along the axial direction. The inner hole of the coil is divided into at least two holes by the rotation point.

[0011] As an optional technical solution for knotless, fully sewn anchors, the coil is a double-wire coil, which is formed by simultaneously inserting the two free ends of the first repair section after it has been folded in half into the folded end of the first repair section.

[0012] As an optional technical solution for knotless, fully sewn anchors, the eyelets are provided in two places, both located on the side of the open end away from the folded end. The two eyelets are the first eyelet and the second eyelet, which are arranged sequentially towards the direction close to the open end. The pre-made knot is formed by the traction line passing through the first eyelet and the second eyelet in sequence and then passing back through the second eyelet and the first eyelet in reverse order, so that the free section and the connecting section both extend along the side of the pre-made knot away from the open end.

[0013] As an optional technical solution for knotless, fully sewn anchors, the inner side of the open end is provided with two opposing through holes, through which the repair thread enters, passes through the anchor body, and exits through the other through hole.

[0014] As an optional technical solution for knot-free, fully sutured anchors, the repair suture penetrates the anchor body axially or radially.

[0015] As an optional technical solution for knotless, fully sutured anchors, the flexible braid, the repair thread, and the traction thread are all woven from ultra-high molecular weight polyethylene fibers.

[0016] As an optional technical solution for knot-free, fully sewn anchors, the anchor body is an axisymmetric U-shaped structure in the length direction.

[0017] This invention provides an implantation device, including an implanter and the aforementioned knotless suture anchor, wherein the implanter is used to implant the anchor body into bone tissue.

[0018] Beneficial effects:

[0019] This invention provides a knotless, fully sutured anchor, comprising an anchor body, a repair suture, and a traction suture. The anchor body is made of a flexible braid folded in half for implantation into bone tissue. The anchor body has an open end and a folded end. The repair suture movably passes through the anchor body and has a first repair segment and a second repair segment located outside the open end. Both the first and second repair segments are located on the side of the open end away from the folded end. The first repair segment and the traction suture are wound into a pre-made knot. The traction suture has a free segment and a connecting segment located outside the pre-made knot. The second repair segment or external suture is used to sequentially pass through the soft tissue and the connecting segment. The free segment is used to be under tension to pull the second repair segment or external suture along the traction path of the traction suture through the pre-made knot. A flexible braided material is folded in half to form the anchor body, creating an open end and a folded end. After the suture passes through the anchor body, the first repair segment of the suture wraps around the traction suture to form a pre-knot on the side of the open end away from the folded end. The traction suture has a free segment and a connecting segment outside the pre-knot. Then, the second repair segment of the suture or an external suture passes through the soft tissue and the connecting segment of the traction suture in sequence. Pulling the free segment of the traction suture can pull the second repair segment or the external suture along the traction path of the traction suture through the pre-knot, eliminating the need for knotting during surgery. Continuing to pull tightens the pre-knot and causes the anchor body to contract, thereby fixing the soft tissue. This replaces the closed-loop full-circle contraction method in existing technologies, avoiding excessive contraction and effectively reducing the surgical risk of anchor body failure.

[0020] This invention provides an implantation device comprising an implanter and the aforementioned knotless suture anchor. The implanter is used to implant the anchor body into bone tissue. By using the implanter to implant the aforementioned knotless suture anchor into bone tissue, the fixation of soft tissue and bone tissue is completed, eliminating the need for knotting during surgery and improving intraoperative efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the knotless, fully sewn anchor provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the implantation device provided in this embodiment of the present invention before implantation;

[0023] Figure 3 This is a schematic diagram of the structure of the first repair segment provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first repair section after folding, provided in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the first repair section after folding and winding, provided in an embodiment of this utility model;

[0026] Figure 6This is a schematic diagram of the structure of the first repair segment after rotation, provided in an embodiment of this utility model;

[0027] Figure 7 This is a schematic diagram of the structure through which the traction wire is wound, provided in an embodiment of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure after the traction wire is wound according to an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the prefabricated structure provided in an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the anchor body after it has been implanted into the bone tissue, according to an embodiment of this utility model.

[0031] Figure 11 This is a schematic diagram of the structure of the repair suture connecting soft tissue provided in an embodiment of this utility model;

[0032] Figure 12 This is a schematic diagram of the structure of the repair line passing through the prefabricated knot provided in this embodiment of the utility model;

[0033] Figure 13 This is a schematic diagram of the structure of the knotless, fully sewn anchor provided in this embodiment of the present invention after tightening;

[0034] Figure 14 This is a schematic diagram of the structure after the excess thread is cut off after tightening, as provided in this embodiment of the utility model.

[0035] In the picture:

[0036] 10. Precast knot; 20. Ring knot; 200. Hole; 20a. First hole; 20b. Second hole;

[0037] 1. Anchor body; 11. Open end; 12. Folded end;

[0038] 2. Repair line; 21. First repair section; 210. Coil; 211. Free wire end; 212. Folded wire end; 22. Second repair section;

[0039] 3. Traction line; 31. Free section; 32. Connecting section; 321. End coil;

[0040] 4. Bone tissue; 5. Soft tissue; 6. Implant. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] like Figure 1 and Figure 2 As shown, this embodiment provides a knotless suture anchor and an implantation device. The implantation device includes an implanter 6 and a knotless suture anchor. The implanter 6 is used to implant the anchor body 1 into the bone tissue 4.

[0046] The knotless suture anchor includes an anchor body 1, a repair suture 2, and a traction suture 3. The anchor body 1 is made of a flexible braid folded in half for implantation into bone tissue 4. The anchor body 1 has an open end 11 and a folded end 12. The repair suture 2 movably passes through the anchor body 1 and has a first repair segment 21 and a second repair segment 22 located outside the open end 11. Both the first repair segment 21 and the second repair segment 22 are located on the side of the open end 11 away from the folded end 12. The first repair segment 21 and the traction suture 3 are wound together to form a pre-made knot 10. The traction suture 3 has a free segment 31 and a connecting segment 32 located outside the pre-made knot 10. The second repair segment 22 or an external suture is used to pass through the soft tissue 5 and the connecting segment 32 in sequence. The free segment 31 is used to be under tension to pull the second repair segment 22 or the external suture along the traction path of the traction suture 3 through the pre-made knot 10.

[0047] A flexible braided material is folded in half to form the anchor body 1, creating an open end 11 and a folded end 12. After the repair suture 2 passes through the anchor body 1, on the side of the open end 11 away from the folded end 12, the first repair segment 21 of the repair suture 2 is wrapped with the traction suture 3 to form a pre-knot 10. The traction suture 3 has a free segment 31 and a connecting segment 32 outside the pre-knot 10. Then, the second repair segment 22 of the repair suture 2 or an external suture passes through the soft tissue 5 and the connecting segment 32 of the traction suture 3 in sequence. By pulling the free segment 31 of the traction suture 3, the second repair segment 22 or the external suture can be pulled along the traction path of the traction suture 3 through the pre-knot 10 without the need for knotting during surgery. Continuing to pull tightens the pre-knot 10 and causes the anchor body 1 to contract, thereby fixing the soft tissue 5. This replaces the closed-loop full-circle contraction method in the prior art, avoiding excessive contraction and effectively reducing the surgical risk of anchor body 1 failure.

[0048] It is understandable that the knotless full-stitch anchor provided in this embodiment can be used as an inner row anchor, with the second repair section 22 being threaded into the prefabricated knot 10 using the traction line 3 to achieve the knotless effect, or it can be used as an outer row anchor, with the external suture (i.e. the suture of the inner row anchor) being threaded into the prefabricated knot 10 using the traction line 3 to achieve tightening and fixation.

[0049] Specifically, the anchor body 1 is an axisymmetric U-shaped structure along its length. The symmetrical U-shaped structure effectively prevents the anchor body 1 from rotating within the bone tissue 4, ensuring a durable and reliable fixation effect; and during implantation and suturing, the tension of the suture can be symmetrically distributed on both sides of the anchor body 1, avoiding stress concentration on one side.

[0050] The way the repair line 2 passes through the anchor body 1 is not limited. The repair line 2 can pass through the anchor body 1 axially or radially, so as to achieve a movable connection between the repair line 2 and the anchor body 1.

[0051] In this embodiment, two opposing through-holes are provided on the inner side of the opening end 11. The repair suture 2 enters through one of the through-holes, passes through the anchor body 1, and exits through the other through-hole. By providing opposing through-holes on the inner side of the opening end 11, after the repair suture 2 passes through the anchor body 1, the end of the repair suture 2 can exit through the corresponding through-hole, preventing displacement or loosening of the anchor body 1 due to unilateral force. The repair suture 2 exiting from the inner side of the opening end 11 can reduce interference with surrounding tissues and reduce the risk of postoperative abrasion.

[0052] Optionally, the flexible braid, repair suture 2, and traction suture 3 are all woven from ultra-high molecular weight polyethylene (UHMWPE) fibers. UHMWPE fibers have high strength and low elongation, which can reduce the risk of postoperative laxity. They also have excellent biocompatibility with human tissue, with no allergic or rejection reactions, and can reduce inflammation and irritation.

[0053] After the repair line 2 is connected to the anchor body 1, the middle part of the repair line 2 is located inside the anchor body 1, and the repair line 2 has a first repair section 21 and a second repair section 22 located outside the anchor body 1. The first repair section 21 and the second repair section 22 are both located on the side of the open end 11 away from the folded end 12.

[0054] See Figures 3 to 9 The first repair section 21 is provided with a coil 210, which rotates and overlaps along the axial direction to form a loop 20. The inner hole of the coil 210 is separated by the rotation point, thus obtaining at least two holes 200 in the loop 20. Pre-forming the loop 20 on the first repair section 21 helps to improve the fixing strength; the loop 20 forms at least two holes 200, and the double-hole structure can disperse the line tension and reduce single-point stress concentration.

[0055] Optionally, the coil 210 is a double-wire coil, which is formed by simultaneously inserting the two free wire ends 211 of the first repair section 21 after folding it into the folded wire ends 212 of the first repair section 21.

[0056] See Figure 3 Taking the first repair segment 21 as an example, fold the first repair segment 21 in half; see [link / reference] Figure 4 The first repair segment 21 is U-shaped and has a folded end 212 and two free ends 211; see also Figure 5 By simultaneously passing the two free ends 211 through the folded end 212 to form a double-wire loop, the tensile strength can be increased, further reducing the risk of anchor loosening; see also Figure 5 and Figure 6 The two-wire coils are rotated and overlapped along the axial direction at the middle position to form a loop 20. The inner hole of the original coil 210 is separated by the rotation point, thereby obtaining at least two holes 200 of the loop 20.

[0057] See Figure 1 , Figures 7 to 9The traction wire 3 is passed through all the holes 200 in sequence and then passed back through all the holes 200 in reverse sequence to obtain the prefabricated knot 10. Passing the traction wire 3 through the holes 200 further increases the anti-slip ability; compared with the traction wire 3 passing through one side, the traction wire 3 passes through the holes 200 in sequence and then passes back through in reverse, realizing that the traction wire 3 passes through both sides of the loop knot 20, making the prefabricated knot 10 more secure.

[0058] In this embodiment, there are two holes 200, both located on the side of the open end 11 away from the folded end 12. The two holes 200 are a first hole 20a and a second hole 20b, which are arranged in sequence toward the direction of the open end 11.

[0059] The traction wire 3 is passed through the first eyelet 20a and the second eyelet 20b in sequence, and then passed back through the second eyelet 20b and the first eyelet 20a in reverse order to obtain the prefabricated knot 10, so that the free section 31 and the connecting section 32 both extend along the side of the prefabricated knot 10 away from the open end 11.

[0060] After the traction suture 3 is threaded through, tension is applied to both free ends 211 to tighten the loop 20. After tightening, the traction suture 3 is wrapped and locked in the loop 20, finally forming a prefabricated knot 10. This forms a structure prefabricated in the suture anchor. During the operation, the doctor does not need to tie the knot. The second repair segment 22 or the external suture is simply threaded into the traction suture 3, and the traction suture 3 pulls it into the prefabricated knot 10 to complete the knotting operation.

[0061] Figure 2 , Figures 10 to 14 The process of using the implanted device is described in detail, specifically:

[0062] See Figure 2 Pre-drill holes in bone tissue 4 to pre-assemble the implant 6 and knotless suture anchors together; see [link to documentation]. Figure 10 Tap the implanter 6 to insert the anchor body 1 of the knotless, fully sutured anchor into the pre-drilled hole; see also Figure 11 The second repair segment 22 of the repair suture 2 is passed through the soft tissue 5 and then inserted into the end coil 321 of the connecting segment 32; see also Figure 12 The free segment 31 of the traction wire 3 is pulled, and the repair wire 2, which passes through the end coil 321, will pass through the loop 20 along the traction path of the traction wire 3; see also Figure 13 Remove the implanter 6, then continue to pull the free segment 31 of the repair suture 2, causing the loop 20 to tighten while simultaneously causing the anchor body 1 in the bone tunnel to contract. See [link to relevant documentation]. Figure 14 Cut off the excess repair sutures 2, and complete the soft tissue fixation 5.

[0063] In this embodiment, a prefabricated knot 10 is provided at the open end 11 of the anchor body 1, so that the prefabricated knot 10 is located on the side of the soft tissue 5 away from the bone tissue 4. This not only fixes the soft tissue 5 to the bone tissue 4, but also avoids the excessive contraction problem caused by the existing closed-loop full-circle contraction, reducing the risk of the anchor body 1 failing and falling out of the bone tissue 4. In this embodiment, the traction suture 3 is bidirectionally wrapped around the loop knot 20 to form a "handshake structure", so that the traction suture 3 and the loop knot 20 of the first repair segment 21 are tightly gripped in both directions, making it more secure and reliable. During the operation, the second repair segment 22 or the external suture is simply passed through the soft tissue 5 and the prefabricated knot 10 in sequence to complete the tightening action, which can simultaneously complete the knot closure and the contraction of the anchor body 1, simplifying the surgical operation steps and making it more convenient for doctors to operate.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A knotless, fully sewn anchor, characterized in that, The device includes an anchor body (1), a repair suture (2), and a traction suture (3). The anchor body (1) is made of a flexible braid folded in half for implantation into bone tissue (4). The anchor body (1) has an open end (11) and a folded end (12). The repair suture (2) movably passes through the anchor body (1) and has a first repair segment (21) and a second repair segment (22) located outside the open end (11). The first repair segment (21) and the second repair segment (22) are both located on the side of the open end (11) away from the folded end (12). The first repair segment (21) and the traction line (3) are wound into a prefabricated knot (10). The traction line (3) has a free segment (31) and a connecting segment (32) outside the prefabricated knot (10). The second repair segment (22) or the external suture is used to pass through the soft tissue (5) and the connecting segment (32) in sequence. The free segment (31) is used to be pulled to pull the second repair segment (22) or the external suture along the traction path of the traction line (3) through the prefabricated knot (10).

2. The knotless, fully sewn anchor pin according to claim 1, characterized in that, The first repair section (21) has a loop (20), the loop (20) has at least two holes (200), and the prefabricated knot (10) is formed by the traction line (3) passing through all the holes (200) in sequence and then passing back through all the holes (200) in reverse sequence.

3. The knotless, fully sewn anchor pin according to claim 2, characterized in that, The first repair section (21) is provided with a coil (210), and the loop (20) is formed by the coil (210) rotating and overlapping along the axial direction. The inner hole of the coil (210) is divided into at least two holes (200) by the rotation point.

4. The knotless, fully sewn anchor pin according to claim 3, characterized in that, The coil (210) is a double-wire coil, which is formed by simultaneously inserting the two free wire ends (211) of the first repair section (21) after folding into the folded wire end (212) of the first repair section (21).

5. The knotless, fully sewn anchor pin according to claim 4, characterized in that, The eyelets (200) are provided in two places, both located on the side of the open end (11) away from the folded end (12). The two eyelets (200) are the first eyelet (20a) and the second eyelet (20b), respectively. The first eyelet (20a) and the second eyelet (20b) are arranged in sequence towards the direction close to the open end (11). The prefabricated knot (10) is formed by the traction line (3) passing through the first eyelet (20a) and the second eyelet (20b) in sequence and then passing back through the second eyelet (20b) and the first eyelet (20a) in reverse order, so that the free section (31) and the connecting section (32) both extend along the side of the prefabricated knot (10) away from the open end (11).

6. The knotless, fully sewn anchor according to any one of claims 1-5, characterized in that, The inner side of the opening end (11) is provided with two opposing through holes, and the repair line (2) enters from one of the through holes, passes through the anchor body (1) and exits from the other through hole.

7. The knotless, fully sewn anchor according to any one of claims 1-5, characterized in that, The repair line (2) passes through the anchor body (1) axially or radially.

8. The knotless, fully sewn anchor according to any one of claims 1-5, characterized in that, The flexible braid, the repair line (2), and the traction line (3) are all woven from ultra-high molecular weight polyethylene fibers.

9. The knotless, fully sewn anchor according to any one of claims 1-5, characterized in that, The anchor body (1) is a U-shaped structure that is axially symmetrical in the length direction.

10. An implantable device, characterized in that, Includes an implanter (6) and a knotless, fully sutured anchor as described in any one of claims 1-9, wherein the implanter (6) is used to implant the anchor body (1) into bone tissue (4).

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