CN114869374A - Loop structure for ligament or tendon injury repair surgery - Google Patents

Abstract

The application relates to the technical field of medical devices, and specifically discloses a loop structure used in ligament or tendon injury repair surgery. A wire loop is provided on a part of the line segment of the wire loop, and the wire loop can be folded and contracted to form a coil. In this application, the hard titanium alloy plate is omitted, the step of turning over the loop is omitted, the operation steps are reduced, the operation time is reduced, and the operation risk is reduced; The larger contact area makes the force of the bone tunnel mouth more uniform, and it is not easy to slide, which is more stable and reliable, facilitates the healing and recovery of wounds after surgery, and improves the treatment effect.

Description

A loop structure used in ligament or tendon injury repair surgery

technical field

The present application relates to the technical field of medical devices, and in particular, to a loop structure used in ligament or tendon injury repair surgery.

Background technique

Ligament or tendon injury is one of the more common and serious human sports injuries, such as the tear of the anterior and posterior cruciate ligaments of the knee joint. If not treated properly, it will cause knee joint instability and severe knee joint dysfunction. Therefore, surgical treatment should be actively performed to reconstruct the ligament and its function.

Loops are often used for the fixation of ligaments or tendons and bones in orthopaedic reconstruction surgery, and can be used for reconstruction of the anterior and posterior cruciate ligaments of the knee joint, acromioclavicular joint dislocation fixation, etc. For example, in the anterior and posterior cruciate ligament surgery of the knee joint, it is necessary to drill bone tunnels in the femur and tibia respectively, and use the loop structure and screws to fix the ligament grafts without bone fragments at both ends in the bone tunnels of the femur and tibia. .

The loop structure currently used in the market is usually a titanium plate with a loop, which generally includes a titanium alloy plate with a hole, an adjustable or non-adjustable wire loop, a pulling wire and a flip wire. When applied in the treatment of ACL ruptures or injuries, tunnels are drilled through the tibia and femur, and one end of an artificial tendon or ligament graft for ligament reconstruction is passed through a wire loop on a titanium alloy plate and then through the titanium alloy plate. The traction wire pulls the artificial tendon or ligament graft and passes through the tibial and femoral canals until the titanium alloy plate reaches the surface of the cortical bone that can be turned over, and at this time, the titanium alloy plate is suspended from the femur through the loop wire. Lateral; pass the other end of the artificial tendon or ligament graft through the bony canal of the tibia and fix the tendon and ligament fixation instruments (such as tendon and ligament fixation screws, staples, etc., or a loop fixation plate) on the tibia end. By fixing the femoral end and the tibial end, and as the tissue gradually grows in to cover and wrap the looped titanium plate, it can provide sufficient mechanical fixation and restore the stability of the joint.

During the implantation process, it is necessary to use a traction wire to bring the looped titanium plate through the tunnel in the bone, and the complicated operation of turning the loop with a looping wire is required, which prolongs the operation time and is prone to errors. In addition, the titanium plate with a loop stretches the ligament or tendon at the bone end, and the ligament or tendon will stretch the wire loop during postoperative stretching. Due to the gap between the bone tunnel and the wire loop, the wire loop will be stretched. Movement phenomenon, resulting in the displacement of the titanium alloy plate, and the uneven pressure of the titanium alloy plate on the tunnel mouth, which eventually leads to delayed wound healing.

SUMMARY OF THE INVENTION

In order to reduce the operation steps in ligament injury repair surgery, improve the convenience and treatment effect of ligament injury repair surgery. The present application provides a loop structure for use in ligament or tendon injury repair surgery.

A kind of loop structure used in ligament or tendon injury repair operation provided by the application adopts the following technical scheme:

A loop structure for repairing ligament or tendon injury, comprising a wire loop connected end to end in a closed loop, a section of wire loop is provided on part of the wire loop, and the wire loop can be folded and contracted to form a wire group.

The loop structure is used in ligament or tendon injury repair surgery, such as in the knee joint anterior and posterior cruciate ligament repair surgery. When used, it is matched with the traction line. The traction line can be surgical suture or special line. Use surgical tools to drill bone tunnels on the tibia and femur, pass one end of the traction wire through the wire loop and then turn around to form a pulling wire. The traction wire is located at or as close as possible to the position where the wire loop is set on the wire loop; One end of the graft is also passed through the wire loop, and then the wire loop and artificial ligament graft are pulled through the traction wire and through the bone tunnel until the wire loop is completely passed through the tunnel opening, then the traction wire is removed, and the traction on the ligament end is used. Function, the thread loop is folded and contracted to form a coil, which is blocked at the tunnel opening to form a fixed seat, thereby fixing one end of the thread loop, and then involving and fixing one end of the artificial ligament graft.

By adopting the above technical solution, in the present application, the hard titanium alloy plate is omitted, the step of turning over the loop is omitted, the operation steps are reduced, the operation time is reduced, and the operation risk is reduced; The whole suture is manufactured, which increases the contact area, makes the tunnel mouth more uniform, and is not easy to slide, more stable and reliable, facilitates the healing and recovery of wounds after surgery, and improves the treatment effect; in addition, the loop structure in the present application does not Contains rigid components that greatly reduce the risk of scratching when passing through the bone tunnel; the wire loops, traction wires and loops in this application are capable of deforming and will not jam when passing through the bone tunnel and tunnel mouth , to improve the comfort of the loop structure with artificial ligament or tendon graft through the bone tunnel.

Optionally, the loop structure further includes a pulling wire, and one end of the pulling wire can pass through the wire loop.

By adopting the above technical solution and using a special traction wire, it is convenient to form a good match with the wire loop and the wire loop, so as to facilitate the pulling of the wire loop and the wire loop through the bone tunnel.

In the actual operation, one end of the artificial tendon or ligament graft is fixed by the loop structure in this application, and in the repair of the anterior and posterior cruciate ligaments of the knee joint, it is usually fixed on one side of the femur, and the other end is fixed by the existing fixation instruments (such as tendons). Ligament fixation screws, staples, etc., can also be fixed with a loop fixation plate); in the repair of the anterior and posterior cruciate ligaments of the knee joint, it is usually fixed on one side of the tibia after passing through the bone canal of the tibia.

Optionally, the wire loop is in the shape of a sleeve, and the entire section of the wire loop is slidably sleeved on the wire loop; or the middle of the wire loop is fixedly connected to the wire loop, and both ends are slidably sleeved on the wire loop. on the wire loop.

By adopting the above technical solution, after the wire loop passes through the tunnel mouth, the side wall of the tunnel mouth will block the end face of the wire loop, and the wire loop is tightened by the ligament to drive the wire loop to fold. After the wire loop is folded, it shrinks to form a The coil is then blocked at the opening of the bone canal, similar to forming a knot. The greater the tension of the ligament, the tighter and stronger the knot, and because the loop is made of ultra-high molecular weight polyethylene material, it has high strength and can play a very important role. Good support, will not deform and fall off from the tunnel mouth.

Optionally, the loops are woven into a mesh shape using fiber yarns made of ultra-high molecular weight polyethylene.

By adopting the above technical solution, the wire loop can normally pass through the tunnel mouth in a relaxed state, and when pulled by external force, it folds and shrinks to form a coil, so as to realize anchoring at the tunnel mouth, and the whole structure is simple, practical, stable and reliable; This structure is more breathable and comfortable.

Optionally, as another solution, the thread loop is made of ultra-high molecular weight polyethylene material and woven into a fiber cloth shape.

By adopting the above technical solution, the wire loop adopts a structure similar to a mask, which can be made softer and at the same time meet the purpose of folding and shrinking to form a coil stably anchored at the tunnel mouth.

Optionally, the wire loop is also made of ultra-high molecular weight polyethylene material.

By adopting the above technical solutions, both the wire loop and the wire loop have superior wear resistance, self-lubrication, high strength, stable chemical properties, strong anti-aging performance and long service life.

The central loop and loop of the present application are made of ultra-high molecular weight polyethylene (UHMW-PE). It can produce large deformation and smoothly pass through the bone tunnel, and at the same time, it can fold and shrink to form a stable coil under the pulling action of the ligament end, so as to realize the fixation of the coil ring; it is made of ultra-high molecular weight polyethylene (UHMW-PE) material. The wire loop can ensure its tensile strength and service life.

Optionally, the circumference of the wire loop is 20 mm to 100 mm; the length of the wire loop is 1/2 to 1/5 of the circumference of the wire loop.

The length of the wire loop is too long, which is inconvenient for the traction wire, the wire loop and the wire loop to pass through the bone tunnel, and wastes materials; the length of the wire loop is too short, and the wire loop cannot form a stable and reliable coil at the tunnel mouth; by using the above technology The solution can achieve the purpose of the invention of the present case, and at the same time has a relatively high cost performance.

Optionally, the length of the wire loop is 1/4 of the circumference of the wire loop.

By adopting the above technical solution, the length ratio of the wire loop and the wire loop can ensure that the wire loop forms a stable and reliable coil at the tunnel mouth, which has a better technical effect.

Optionally, the middle portion of the wire loop has an annular clip groove along its circumference, and when the pulling wire passes through the wire loop and the wire loop, the pulling wire is clipped into the annular clip groove.

The middle part of the thread loop can be bonded to a certain part of the thread loop by an adhesive, or when the thread loop is woven with the thread loop, part of the yarn in the middle part of the thread loop is directly embedded in the thread loop to form a connection; When driving the wire loop through the bone tunnel, both ends of the wire loop can pass through the wire loop tunnel opening at the same time. After the wire loop is folded in half, both ends have the same length. It is convenient for the quick and stable folding of the thread loop to form a coil structure.

Optionally, the cross sections of the wire loop and the wire loop are both oval or flat.

The bone tunnel and the tunnel mouth are usually round, and the wire loop and the wire loop are folded in half in use. By adopting the above technical solution, the wire loop and the wire loop can better adapt to the environment of the bone tunnel and the tunnel mouth, reducing the need for The cutting action of ligament or tendon implants and human tissue reduces secondary damage.

Optionally, the loop is made of a first yarn, and the loop is made of a second yarn, and the diameter of the second yarn is larger than that of the first yarn ; The weaving weft density of the wire loop is larger than the weaving weft density of the wire loop.

By adopting the above technical solutions, the wire loop is relatively soft, which is convenient for it to pass through the bone tunnel and avoids harm to the human body; the wire loop has a certain toughness and supporting strength, which can form a stable and reliable coil at the tunnel mouth to realize the anchoring fixed, so as to fix the wire loop and tendon or ligament.

Optionally, the wire diameter of the first yarn is 50 denier to 80 denier; the wire diameter of the second yarn is 100 denier to 300 denier; The weaving weft density is 60 knots/inch to 90 knots/inch, and the weaving weft density of the wire loops is 20 knots/inch to 50 knots/inch.

By adopting the above technical solution, the weaving texture of the thread loop is more prominent, and the surface friction force is greater, which facilitates the formation of a stable and reliable coil at the tunnel mouth.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. In this application, the hard titanium alloy plate is omitted, the step of turning over the loop is omitted, the operation steps are reduced, the operation time is reduced, and the operation risk is reduced.

2. The loop structure in this application is made of full suture, which increases the contact area, makes the tunnel mouth more uniform, and is not easy to slide, more stable and reliable, facilitates the healing and recovery of wounds after surgery, and improves the therapeutic effect.

3. The loop structure in the present application does not contain rigid parts, which greatly reduces the risk of scratching when passing through the bone tunnel.

4. The wire loop, the traction wire and the wire loop in the present application can all be deformed, and when passing through the bone tunnel and the tunnel mouth, it will not get stuck, and the loop structure is improved to carry the artificial ligament or tendon graft through the bone tunnel. comfort at times.

5. The thread loop in this application is made of ultra-high molecular weight polyethylene material, which can produce a large deformation, smoothly pass through the bone tunnel, and can fold and shrink to form a stable coil under the pulling action of the ligament end, so as to realize the thread Ring fixing.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the present loop structure.

Figure 2 is a schematic structural diagram of the loop structure during the installation process.

FIG. 3 is a partial enlarged schematic view of the structure at A in FIG. 2 .

Figure 4 is a schematic structural diagram of the loop structure after the installation is completed.

In the figure, 1, wire loop; 2, wire loop; 2a, wire ball; 2b, annular groove; 3, traction wire; 4, ligament; 5, bone; 5a, bone tunnel.

Detailed ways

The present application will be described in further detail below with reference to Figures 1 to 4 .

This embodiment discloses a loop structure used in ligament or tendon injury repair surgery; the loop structure is used in ligament or tendon injury repair surgery, for example, used in knee joint anterior and posterior cruciate ligament repair surgery, refer to Figure 1 It is shown that this loop structure includes a traction wire 3 and a loop 1 that is connected end to end to form a closed loop, one end of the traction wire 3 can pass through the loop 1, and a section of wire loop 2 is provided on a part of the line segment of the loop 1, and the loop 2 can be folded and contracted to form a coil 2a. Both the loop 2 and the loop 1 in this application are made of ultra-high molecular weight polyethylene material. Specifically, the loop 2 can be woven into a mesh shape with fiber yarns made of ultra-high molecular weight polyethylene; it can also be woven into a fiber cloth shape with ultra-high molecular weight polyethylene materials.

The implementation principle of the loop structure disclosed in the embodiment of the present application is as follows: referring to FIG. 2 and FIG. 3 , when in use, a bone tunnel 5 a is first drilled on the bone 5 with a surgical tool, and one end of the traction wire 3 passes through the wire loop 1 After turning around to form a pulling wire, the pulling wire 3 is located at or as close as possible to the wire loop 2 set on the wire loop 1; The artificial ligament graft is pulled and passed through the bone tunnel 5a of the bone 5; with reference to Figure 4, after the wire loop 2 completely passes through the tunnel mouth, the traction wire 3 is removed, and the wire loop 2 is folded and contracted by the pulling action of the ligament 4 A coil 2a is formed and plugged at the tunnel opening to form a fixing seat, thereby fixing one end of the wire loop 1, and then involving and fixing one end of the artificial ligament graft.

In this application, the hard titanium alloy plate is omitted, the step of turning over the loop is omitted, the operation steps are reduced, the operation time is reduced, and the operation risk is reduced; The larger contact area makes the tunnel mouth more evenly stressed, not easy to slide, more stable and reliable, facilitates the healing and recovery of wounds after surgery, and improves the therapeutic effect; When passing through the bone tunnel 5a, the risk of scratching will be greatly reduced; the wire loop 1, the traction wire 3 and the wire loop 2 in this application can all be deformed, and will not get stuck when passing through the bone tunnel 5a and the tunnel mouth, The comfort of the loop structure when passing the artificial ligament or tendon graft through the bone tunnel 5a is improved.

In the actual operation, one end of the artificial tendon or ligament graft is fixed by the loop structure in this application, and in the repair of the anterior and posterior cruciate ligaments of the knee joint, it is usually fixed on one side of the femur, and the other end is fixed by the existing fixation instruments (such as tendons). Ligament fixation screws, staples, etc., can also be fixed with a loop fixation plate); in the repair of the anterior and posterior cruciate ligaments of the knee joint, it is usually fixed on one side of the tibia after passing through the bone canal of the tibia.

The center loop 2 of the present application is made of ultra-high molecular weight polyethylene UHMW-PE material. Ultra-high molecular weight polyethylene is a linear structure with excellent comprehensive performance; using it to form the loop 2 has strong toughness and can produce relatively high performance. The large deformation can smoothly pass through the bone tunnel 5a, and at the same time, it can be folded and contracted under the pulling action of the ligament 4 to form a stable coil 2a, so as to realize the fixation of the coil 1 . Both the wire loop 1 and the wire loop 2 have super wear resistance, self-lubrication, stable chemical properties, strong anti-aging performance and long service life.

As shown in FIGS. 1 and 2 , the wire loop 2 in this embodiment is in the shape of a sleeve, and the entire section of the wire loop 2 is slidably sleeved on the wire loop 1; Set on the wire ring 1. After the wire loop 2 passes through the tunnel mouth, the side wall of the tunnel mouth will block the end face of the wire loop 2. The wire loop 1 is tightened by the ligament 4, and the wire loop 2 is folded. After the wire loop 2 is folded, it shrinks to form a The coil 2a is then blocked at the opening of the bone canal, similar to forming a knot, the greater the tension of the ligament 4, the tighter and stronger the knot, and because the thread loop 2 is made of ultra-high molecular weight polyethylene material, the strength is high and can be It plays a good supporting role and will not deform and fall off from the tunnel mouth.

In the present application, the circumference of the wire loop 1 is 20mm to 100mm; the length of the wire loop 2 is 1/2 to 1/5 of the circumference of the wire loop 1; the cross-sections of the wire loop 1 and the wire loop 2 are both oval or flat shape. As a preferred solution, the circumference of the wire loop 1 is 60 mm or 80 mm; the length of the wire loop 2 is 1/4 of the circumference of the wire loop 1 .

Further, as shown in FIG. 3 , the middle of the wire loop 2 has an annular groove 2b along its circumferential direction. When the pulling wire 3 passes through the wire loop 1 and pulls the wire loop 1, the pulling wire 3 is stuck in the annular groove 2b. The middle of the line loop 2 can be bonded to a certain part of the line loop 1 by adhesive, or when the line loop 2 is woven with the line loop 1, the part of the yarn in the middle of the line loop 2 is directly embedded in the line loop 1 to form a connection; traction; When the thread 3 drives the thread loop 1 to pass through the bone tunnel 5a, both ends of the thread loop 2 can pass through the tunnel mouth of the thread loop 2 at the same time. The end faces play a blocking role, thereby facilitating the rapid and stable folding of the thread loop 2 to form the coil 2a structure.

In the present application, the thread loop 1 is knitted with the first yarn, and the loop 2 is knitted with the second yarn, and the diameter of the second yarn is larger than that of the first yarn; It is larger than the weaving weft density of the loop 2. Specifically, the wire diameter of the first yarn is 50 denier to 80 denier; the wire diameter of the second yarn is 100 denier to 300 denier; the weft density of the loop 1 is 60 Nodes/inch to 90 nodes/inch, and the weaving weft density of the loop 2 is 20 nodes/inch to 50 nodes/inch. As a preferred solution, the wire diameter of the first yarn is 60 denier; the wire diameter of the second yarn is 200 denier; the weaving weft density of the loop 1 is 70 knots/inch, and the weaving weft of the loop 2 is 70 knots/inch. The density is 30 nodes/inch.

The embodiments of this specific implementation manner are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same components are denoted by the same reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims (10)

1. A loop structure used in ligament or tendon injury repair surgery comprises a loop (1) which is connected end to end and is in a closed loop shape, and is characterized in that a segment of loop (2) is arranged on part of the segment of the loop (1), and the loop (2) can be folded and contracted to form a coil (2 a).

2. The loop structure for use in ligament or tendon injury repair surgery according to claim 1, characterized in that it further comprises a pull wire (3), one end of the pull wire (3) being passable through the wire loop (1).

3. The loop structure for use in ligament or tendon injury repair surgery according to claim 2, characterized in that the loop (2) is in the shape of a sleeve, and the loop (2) is slidably fitted over the wire loop (1) in its entirety.

4. The loop structure used in ligament or tendon injury repair surgery according to claim 2, wherein the loop (2) is in the shape of a sleeve, the middle part of the loop (2) is fixedly connected with the wire loop (1), and both ends of the loop are slidably sleeved on the wire loop (1).

5. The loop structure for use in ligament or tendon injury repair surgery according to claim 1 or 2, wherein the loop (2) is woven in a grid using fiber yarns of ultra-high molecular weight polyethylene.

6. The loop structure for use in ligament or tendon injury repair surgery according to claim 1 or 2, wherein the loop (2) is woven from ultra-high molecular weight polyethylene into a fiber cloth shape.

7. The loop structure for use in ligament or tendon injury repair procedures of claim 2, said loop (1) being made of ultra-high molecular weight polyethylene material.

8. The loop structure for use in ligament or tendon injury repair surgery according to claim 2, 3, or 4, characterized in that the middle of the loop (2) has a ring-shaped snap groove (2 b) along its circumference, and when the traction wire (3) is pulled through the wire loop (1) and pulls the wire loop (1), the traction wire (3) snaps into the ring-shaped snap groove (2 b) of the loop (2).

9. The loop structure for use in ligament or tendon injury repair surgery according to claim 1 or 2 or 3 or 4, characterized in that the cross-sections of the wire loop (1) and the wire loop (2) are both oval or flat.

10. The loop structure for use in ligament or tendon injury repair procedures of claim 1 or 2 or 3 or 4, wherein the loop (1) is woven with a first yarn and the loop (2) is woven with a second yarn having a larger diameter than the first yarn; the weaving weft density of the thread loop (1) is larger than that of the thread loop (2).

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