A system and method for repairing damaged tissue, and a system and method for reconstructing cruciate ligament

Abstract

A system and method for repairing damaged tissue, a system and method for cruciate ligament reconstruction, the cruciate ligament reconstruction system includes a fixing plate, a flexible support member, and a plurality of traction lines. The fixing plate is provided with traction line holes that match the number of traction lines and at least two reinforcement holes for the flexible support member to pass through. The two ends of the flexible support member are respectively used to pass through the two reinforcement holes to enter the stump channel for pre-repairing the damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support member is used to provide support for the self-repair of the damaged tissue of the stump and provide a repair channel, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing. This method has good overall reinforcement effect and high mechanical strength; it also perfectly solves the problem of stump sagging, says goodbye to bulging eye deformity, and has small surgical trauma. In addition, the fixing plate has been improved in design to solve the problem of fitting the fixing plate to the bone surface.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular, relates to a system and method for repairing damaged tissue and a system and method for reconstructing anterior cruciate ligament. Background Art

[0002] Intra-articular tissues, such as the anterior cruciate ligament (ACL), do not heal after rupture. In addition, the menisci and articular cartilage in human joints often fail to heal after injury. Tissues found outside of joints heal by forming a fibrin clot that connects the ends of the ruptured tissue and then reshapes to form a scar that heals the tissue. In synovial joints, fibrin clots cannot form or dissolve quickly after knee injuries, thereby preventing arthrosis of the joint and stiffness after minor injuries. Joints contain synovial fluid, which, as part of normal joint movement, naturally prevents clot formation in the joint. This fibrinolytic process results in premature loss of the fibrin clot scaffold and interruption of the healing process of intra-articular or intra-articular tissues.

[0003] The treatment approach for repair after anterior cruciate ligament rupture involves removing the ruptured scalloped ligament and replacing it with a point-to-point tendon graft (ACL reconstruction). While this approach can initially restore stability in most patients, longer-term follow-up shows that many postoperative patients have abnormal structural laxity, suggesting that the reconstruction may not be able to withstand the physiological forces applied over time.

[0004] ACL reconstruction currently requires the use of a graft such as a tendon graft that is harvested from elsewhere in the patient's leg, or from a donor. Placement of such a graft requires removal of a large amount of the torn ACL, thereby removing ligament function but destroying the dynamic stability of the knee joint, which is of utmost importance. Placement of the graft is also recommended within the original ACL insertion site, so these areas of specialized tissue are also removed to create a channel for the graft.

[0005] Because the tendon graft used in reconstructive surgery is often larger than the mid- or distal-segment width of the ACL it replaces, incision plasty is often performed as an adjunctive surgical procedure to widen the intercondylar incision space to avoid graft impingement.

[0006] Arthrex, Inc. (Rui Shi Medical Devices) mentioned a method of cross-pin ACL reconstruction in US13109390, which includes the following steps: forming a tibial socket in the tibia in a retrograde manner by drilling into the tibia from the articular surface of the tibia with a retrograde cutter, the socket having an entrance connected to the joint space and the side wall; passing a guide pin through a guide member, the guide member is oriented to be roughly parallel to the tibial plateau, and passes through the side wall of the tibial socket so as to intersect the tibial socket laterally; using the guide pin to pull the flexible strand through the tibial socket laterally The invention relates to a method for treating a femoral condyle and a femoral fossa. The method comprises the steps of: guiding a flexible strand into the joint cavity with a retrograde cutter, forming a loop in the flexible strand, and pulling the loop in the flexible strand out through the entrance of the tibial fossa; engaging a graft in the joint joint space with the loop in the flexible strand pulled out from the entrance of the tibial fossa; pulling the flexible strand in a direction transverse to the tibial fossa so as to pull the graft engaged therewith into the tibial fossa; passing the implant transversely through the loop formed in the graft in the tibial fossa; and fixing the graft in the femoral fossa by attaching the graft to a fixation device. The fixation device is an interference screw or a suture / button-and-loop structure having a button with at least one small hole and a continuous suture loop connected to the small hole.

[0007] The above is an ACL repair technology. ACL repair technologies have been emerging one after another, and researchers have focused on the fixation of the wire band. However, a large number of reports show that there are problems such as poor clinical application. For example, how to effectively fix the stump, there is a lack of relevant technology and corresponding devices. Once the stump prolapses, it may cause bulging eye deformity, resulting in various symptoms, which may easily lead to secondary surgery and potential disputes. Summary of the invention

[0008] Based on the above technical problems, the present invention provides a system and method for repairing damaged tissue and a system and method for reconstructing anterior cruciate ligament.

[0009] To achieve the above object, the first technical solution provided by the present invention is:

[0010] A system for repairing damaged tissue comprises at least a fixing plate, a flexible support member, and a plurality of traction wires. The fixing plate is provided with traction wire holes matching the number of traction wires and at least two reinforcement holes for passing the flexible support member. One end of the traction wire is used for traction of the proximal tissue of the stump, and the other end is used for passing through the traction wire hole and fixing it on the fixing plate; the two ends of the flexible support member are respectively used for passing through two reinforcement holes to enter the stump channel for pre-repairing the damaged tissue, and tightening and fixing it at the distal side of the stump channel; the flexible support member is used to provide support for the self-repair of the damaged tissue of the stump and provide a repair channel to solve the problem of stump sagging.

[0011] Preferably, the fixing plate is used to be set on the bone surface near the proximal tunnel of the stump, and the traction line holes and the reinforcement holes are distributed with the center of the fixing plate as the origin, and the outer edges of the traction line holes and the reinforcement holes are respectively located in a circle with a diameter of R1 with the center of the fixing plate as the origin, so that the fixing plate is tightly fitted to the bone surface in the proximal tunnel, and the size of the proximal tunnel is compatible with the circle with a diameter of R1.

[0012] Preferably, both ends of the flexible support member are used to be tightened and fixed on the bone surface in the distal tunnel near the distal end side.

[0013] Preferably, the two reinforcement holes are arranged corresponding to each other with the center of the fixing plate as the origin, and the bridge portion between the two reinforcement holes should be the middle suspension tensioning portion of the flexible support member, and the stress of the bridge portion should be greater than the maximum tension of the middle suspension tensioning of the flexible support member.

[0014] Preferably, the flexible support member includes a first end, a first middle support member, an middle suspension tensioning member, a second middle support member and a second end in sequence; the middle suspension tensioning member is located at the bridge portion, and the support points for tensioning and fixing both ends of the flexible support member are located on the middle suspension tensioning member. The first middle support member and the second middle support member are at least partially located in the stump channel for pre-repair of damaged tissue, and are used to provide support and a repair channel for the self-repair of the damaged tissue in the stump.

[0015] The second aspect provided by the present invention is: a system for cruciate ligament reconstruction, which at least includes a fixing plate for fixing on the femur, a flexible support member, and a plurality of traction wires. The fixing plate is provided with traction wire holes adapted to the number of traction wires and at least two reinforcement holes for passing the flexible support member. One end of the traction wire is used to pull the proximal ligament tissue of the stump, and the other end is used to pass through the traction wire hole through the femoral tunnel and fix it on the fixing plate; the two ends of the flexible support member are respectively used to penetrate two reinforcement holes into the stump channel for pre-repairing the damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support member is used to provide support and a repair channel for the self-repair of the damaged tissue of the stump, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing.

[0016] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0017] 1. The two ends of the flexible support provided by the present invention are respectively provided with two reinforcement holes to enter the stump channel of the pre-repaired damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support can be used to provide support and a repair channel for the self-repair of the damaged tissue of the stump, so that the damaged tissue of the stump maintains tension and position, which is conducive to its short-term repair and long-term healing. This method greatly reduces the implantation and attachment of the graft, has a good overall reinforcement effect, and has high mechanical strength (3.66 times that of the natural human ACL);

[0018] 2. The present invention can perfectly solve the problem of stump sagging and say goodbye to bulging eye deformity;

[0019] 3. During the operation, there is no need to create a tunnel space large enough for the implant to be implanted. Only a tunnel space large enough for the flexible support member to pass through is needed. The operation is less traumatic, and the tunnel cross-sectional area can even be only 1 / 4 of the reconstruction area. Symptoms can be effectively relieved within 2 weeks after the operation, and return to sports can be achieved within 8 weeks (jogging);

[0020] 4. The fixation plate has been improved in design. By controlling the aperture spacing, the problem of the fixation plate fitting the bone surface is perfectly solved, eliminating the problems of postoperative traction line compression, plate warping, and even fixation failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A- Figure 1 C is a schematic diagram showing the principle structure implementation of a fixing plate, a flexible support member, and a plurality of traction lines in a system for repairing damaged tissue;

[0022] Figure 2 A cross-sectional example diagram for use with a system for damaged tissue repair;

[0023] Figure 3 A schematic diagram showing the principle of the system for repairing damaged tissue. DETAILED DESCRIPTION

[0024] The following is a further detailed description of an anchor and an anchor system for fixing soft tissue proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer based on the following description. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, the “proximal end” refers to the end close to the operator, and the “distal end” refers to the end far from the operator.

[0030] Although the methods and systems described in this application can be used to repair a torn anterior cruciate ligament (ACL), these methods and systems are not limited to ACL repair, but are generally applicable to repairing tissue, particularly tissue within contracted areas of the body (including joints) that would benefit from connection to bone. Therefore, although the embodiments described herein illustrate ACL repair, it should be understood that these methods and systems can be used to repair any tissue, graft or implant. For example, repair of torn ligaments in the shoulder, hip, spine, etc.

[0031] The present application may include the steps of forming a tunnel, a passage, a tunnel, or the like (which may be referred to as a "tunnel" for convenience) through a bone (e.g., a femoral head, a tibial head) from a first side of the bone (the first side with a stump) to a second side of the bone, and passing a flexible support member through the tunnel from the first side or the second side and all the way through the bone passage to the opposite side, where it is tightened and fixed in place.

[0032] The present application describes a method for percutaneous repair of tissue, which includes the following steps: forming a tunnel through a bone so that the tunnel extends from a first side of the bone to a second side of the bone; passing a flexible support member through the tunnel from the first side of the bone, through the tunnel and adjacent to the second side of the bone; fixing the flexible support member in the tunnel adjacent to the second side of the bone; and suturing the torn ends of the tissue.

[0033] Typically, after the torn tissue (e.g., ligament) is tightened and fixed in or on the bone, the passage through the bone can be filled and / or closed. For example, any method described herein can include the step of filling the tunnel through the bone after the flexible support is fixed. The tunnel can be filled with bone cement (e.g., polymethyl methacrylate) and / or bone fragments, etc.

[0034] The core of the present application is that the method and system can allow minimally invasive repair of torn tissue, even in very narrow or confined spaces such as bone joints, without having to expand or otherwise open the space and potentially damage surrounding tissue as currently required in many tissue repairs. Most importantly, the two ends of the flexible support provided by the present invention are respectively penetrated by the two reinforcement holes into the stump channel of the pre-repaired damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support can be used to provide support and a repair channel for the self-repair of the damaged tissue of the stump, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing. This method greatly reduces the need for graft implantation and attachment, has good overall reinforcement effect, and has high mechanical strength (3.66 times that of natural human ACL); 2. It can perfectly solve the problem of stump sagging and say goodbye to bulging eye deformity; 3. During the operation, there is no need to open a tunnel space large enough to allow the graft to be implanted. Only a tunnel space is needed to allow the flexible support to pass through. The operation is less traumatic, and the cross-sectional area of ​​the tunnel can even be only 1 / 4 of the reconstructed area. Symptoms after surgery can be effectively relieved within 2 weeks, and return to sports can be achieved within 8 weeks (jogging); 4. The fixation plate has been improved in design. By controlling the aperture spacing, the problem of fit between the fixation plate and the bone surface is perfectly solved, eliminating the problems of postoperative traction line compression, plate warping, and even fixation failure.

[0035] For example, the present application describes methods and systems for repairing anterior cruciate ligament (ACL) of a patient. These methods (and systems for performing them) allow for repair, rather than just replacement of the ACL. As mentioned above, although the ACL is used to illustrate the systems and methods of the present invention, these systems (devices and systems) may also be used with many other tissues and are not limited to repair and / or replacement of ACL tissue.

[0036] First embodiment

[0037] See also Figure 1 A- Figure 1C is a schematic diagram showing a schematic implementation example of a system for repairing damaged tissue. Figure 2 , which is a cross-sectional diagram of an example of the use of the system for damaged tissue repair. Figure 3 , which is a diagram showing the principle of use of a system for damaged tissue repair. It at least includes a fixing plate 11, a flexible support member 12, and a plurality of traction wires 13, 14.

[0038] The fixing plate 11 is provided with traction wire holes 111, 112 matching the number of traction wires 13, 14 and at least two reinforcement holes 113, 114 for the flexible support member 12 to pass through. One end of the traction wires 12, 14 is used to pull the proximal tissue of the stump 21, and the other end is used to pass through the traction wire holes 111, 112 and fix it on the fixing plate 11. After the traction wires 12, 14 pass through their respective traction wire holes 111, 112, they can be cross-knotted and fixed, and a movable knot can also be tied at the initial stage. After the end of the flexible support member 12 for repairing damaged tissue is fixed, the traction wire 12 can be re-knotted and fixed, so as to facilitate the tight fixation of the fixing plate and the bone surface. Of course, the above is only an example and is not used to limit this solution.

[0039] The fixing plate 11 is used to be set on the bone surface near the proximal tunnel of the stump, and the traction line holes 111, 112 and the reinforcement holes 113, 114 are distributed with the center of the fixing plate as the origin, and the outer edges of the traction line holes 111, 112 and the outer edges of the reinforcement holes 113, 114 are respectively located in a circle with a diameter of R1 with the center of the fixing plate 11 as the origin, so that the fixing plate 11 is tightly fitted with the bone surface in the proximal tunnel, and the size of the proximal tunnel is suitable for the circle with a diameter of R1. The cross-section of the proximal tunnel can be set in a circular, elliptical, long strip or other shapes, but generally a circular or elliptical or similar shape is selected. The size of the fixing plate 11 is similar to the cross-section of the proximal tunnel, such as being set to a circle with a diameter of R1. The two reinforcement holes 113 and 114 are arranged correspondingly with the center of the fixed plate 11 as the origin, and the bridge part 115 between the two reinforcement holes 113 and 114 should be the middle suspension tensioning part of the flexible support member 12, and the stress of the bridge part should be greater than the maximum tension of the middle suspension tensioning of the flexible support member 12.

[0040] The flexible support member 12 can be made of medical sutures, or partially made of medical sutures. The flexible support member includes a first end 121, a first intermediate support portion 122, an intermediate suspension tensioning portion 123, a second intermediate support portion 124, and a second end 125 in sequence; the intermediate suspension tensioning portion 123 is located at the bridge portion 115, and the support points for tightening and fixing the two ends of the flexible support member 12 are located on the intermediate suspension tensioning portion 123, and the first intermediate support portion 122 and the second intermediate support portion 124 are at least partially located in the stump channel 21 of the pre-repair of the damaged tissue, which is used to provide support for the self-repair of the damaged tissue of the stump and provide a repair channel to solve the problem of stump sagging. The flexibility of the flexible support member 12 mainly refers to the fact that it can be flexibly folded at a certain point of the intermediate suspension tensioning portion 123, and the bridge portion 115 can be a corresponding point or a certain part as a support point, which is convenient for the subsequent end fixation of the flexible support member 12. Furthermore, the first end 121, the first intermediate support portion 122, the intermediate suspension tensioning portion 123, the second intermediate support portion 124 and the second end 125 can be made in one piece, or can be made by splicing several parts. Furthermore, the intermediate suspension tensioning portion 123 can be slightly thinner than the first intermediate support portion 122 and the second intermediate support portion 124. For the convenience of fixing, the first end 121 and the second end 125 can also be slightly thinner than the first intermediate support portion 122 and the second intermediate support portion 124.

[0041] The two ends of the flexible support member 12 are respectively used to penetrate the two reinforcement holes 113 and 114 to enter the stump channel 21 for pre-repair of the damaged tissue, and be fixed to the distal side 15 of the stump channel; the flexible support 12 is tightened and fixed at the supporting point of the bridge portion 115 between the two reinforcement holes 113 and 114, and is used to provide support and a repair channel for the self-repair of the damaged tissue of the stump 222.

[0042] The proximal tunnel and the distal tunnel can be in one channel of the same bone. In this case, only one channel needs to be opened, and the fixing plate 11 is fixed on the bone surface of the proximal tunnel, while the two ends of the flexible support member 12 are fixed on the bone surface in the distal tunnel.

[0043] The proximal tunnel and the distal tunnel can be two channels in different bones. If in this case, two channels need to be opened, the fixing plate 11 is fixed on the bone surface of the proximal tunnel, and the two ends of the flexible support member 12 are fixed on the bone surface in the distal tunnel.

[0044] A method for repairing damaged tissue, comprising the following steps:

[0045] One end of the traction wire is configured to pull the proximal tissue of the stump;

[0046] forming a tunnel through the bone near the stump adjacent to the damaged tissue so that the tunnel extends from a first side of the bone to a second side of the bone, and a fixation plate is fixed to the bone surface through the tunnel;

[0047] The other end of the traction line is configured to pass through the traction line hole and be fixed to the fixing plate;

[0048] Two ends of the flexible support member are respectively provided with two reinforcement holes to enter the stump channel for pre-repair of damaged tissue, and are tightened and fixed at the distal side of the stump channel; the flexible support member is used to provide support for the self-repair of the damaged tissue of the stump and provide a repair channel to solve the problem of stump sagging.

[0049] The two reinforcement holes are arranged correspondingly with the center of the fixed plate as the origin, and the bridge part between the two reinforcement holes should be the middle suspension tensioning part of the flexible support member, and the stress of the bridge part should be greater than the maximum tension of the middle suspension tensioning of the flexible support member.

[0050] Flexible support members can be used to provide support and repair channels for the damaged tissue of the stump to repair itself, so that the damaged tissue of the stump can maintain tension and position, which is conducive to its short-term repair and long-term healing. This method greatly reduces the implantation and attachment of grafts, has good overall enhancement effect, and high mechanical strength.

[0051] Second embodiment

[0052] A cruciate ligament reconstruction system at least comprises a fixing plate for fixing on a femur, a flexible supporting member, and a plurality of traction wires.

[0053] The fixing plate is provided with traction line holes matched with the number of traction lines and at least two reinforcement holes for passing the flexible support member. One end of the traction line is used for traction of the proximal ligament tissue of the stump, and the other end is used for passing through the traction line hole through the femoral tunnel and fixing it on the fixing plate; the two ends of the flexible support member are respectively used for passing through the two reinforcement holes to enter the stump channel for pre-repair of the damaged tissue, and then passing through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support member is used to provide support and a repair channel for the self-repair of the damaged tissue of the stump, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing.

[0054] See also Figure 3 The fixing plate is used to be set on the femoral bone surface of the femoral tunnel. The traction line hole and the reinforcement hole are distributed with the center of the fixing plate as the origin, and the outer edges of the traction line hole and the reinforcement hole are respectively located in a circle with a diameter of R1 with the center of the fixing plate as the origin, so that the fixing plate and the bone surface in the femoral tunnel are closely fitted, and the size of the femoral tunnel is suitable for the circle with a diameter of R1. The size of the femoral tunnel is not more than 4.5mm.

[0055] The two reinforcement holes are arranged correspondingly with the center of the fixed plate as the origin, and the bridge part between the two reinforcement holes is used as the middle suspension tensioning part of the flexible support member. The stress of the bridge part should be greater than the maximum tension of the middle suspension tensioning of the flexible support member, and the bridge part is in an upward, concave or smooth filtering structure.

[0056] The flexible support member includes a first end, a first middle support member, an middle suspension and tensioning member, a second middle support member and a second end in sequence; the middle suspension and tensioning member is located on the bridge portion, and the support points for tightening and fixing the two ends of the flexible support member are located on the middle suspension and tensioning member. The first middle support member and the second middle support member are at least partially located in the stump channel for pre-repair of damaged tissue, and are used to provide support and a repair channel for the self-repair of the damaged tissue of the stump.

[0057] The thickness of the middle suspension tensioning part is 1 mm, and its width is no more than 1 mm. The width of the bridge part between the two reinforcement holes should be no more than 1.2 mm.

[0058] The width of the first intermediate support portion and the second intermediate support portion is no more than 3 mm, and the overall breaking strength of the flexible support member is greater than 7686N.

[0059] A method of cruciate ligament reconstruction, comprising:

[0060] A fixing plate, a flexible support member, and a plurality of traction wires are provided for fixing on the femur. The fixing plate is provided with traction wire holes matching the number of traction wires and at least two reinforcement holes for the flexible support member to pass through.

[0061] At least one end of the two traction lines is used to traction the proximal ligament tissue of the stump;

[0062] It is configured to open a femoral tunnel and fix the fixation plate to the femur;

[0063] The other ends of at least two traction wires are used to pass through the traction wire holes through the femoral tunnel and be fixed on the fixing plate by ligation and suturing;

[0064] The two ends of the flexible support are respectively penetrated with the two reinforcement holes to enter the stump channel 21 of the pre-repaired damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; the flexible support is used to provide support and a repair channel for the self-repair of the damaged tissue 22 of the stump, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing. It is particularly beneficial for the generation of nerve tissue 26 and vascular tissue 25, which is beneficial to short-term repair and long-term healing.

[0065] The two ends are tightened and fixed to the flexible support fixture, and the flexible support fixture is fixed to the tibial bone surface opposite to the stump. The repair of the posterior cruciate ligament 23 and the anterior cruciate ligament 24 is particularly utilized.

[0066] Application Examples

[0067] The ACL repair method using the above system includes:

[0068] 1. Evaluate the structure and texture of the ACL stump and confirm ACL femoral insertion avulsion;

[0069] 2. Treat the ACL stump, clean up the inactivated tissue, and preserve the natural structure as much as possible;

[0070] 3. Two traction lines are used to fix the ACL stump, which are ligated and sutured evenly and horizontally distributed at the proximal end of the stump;

[0071] 4. Prepare a femoral tunnel in the ACL femoral foot area with a diameter of 4.5MM;

[0072] 5. Beath needle is passed through the lateral femoral skin via AM-assisted approach;

[0073] 6. Cut the skin along the Beath needle exit point and use three cannulas to separate the muscle tissue to the bone surface;

[0074] 7. Lead the stump fixation traction wire out of the femoral tunnel along the Beath needle and pass it through the traction wire hole of the fixation plate;

[0075] 8. Prepare a tibial tunnel with a diameter of 4.5 mm;

[0076] 9. The support piece is disassembled and suspended in the reinforcement hole of the fixation plate, introduced into the joint through the Beath needle, and led out through the tibial tunnel;

[0077] 10. The ends of the support members are fixed;

[0078] 11. Tighten the traction wires, tie them together, and fix them to the surface of the femoral fixation plate.

[0079] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A system for repairing damaged tissue, characterized in that: At least comprises a fixing plate, a flexible support member, and a plurality of traction wires, wherein the fixing plate is provided with traction wire holes adapted to the number of the traction wires and at least two reinforcement holes for the flexible support member to pass through, one end of the traction wire is used for traction of the proximal tissue of the stump, and the other end is used for passing through the traction wire hole and fixing it on the fixing plate; The two ends of the flexible support member are respectively used to penetrate the two reinforcement holes into the stump channel of the pre-repaired damaged tissue, and to tighten and fix to the distal side of the stump channel; the flexible support member is used to provide support and a repair channel for the self-repair of the damaged tissue of the stump, so as to solve the problem of sagging of the stump; The fixing plate is used to be arranged on the bone surface near the proximal tunnel of the stump, the traction line holes and the enhancement holes are distributed with the center of the fixing plate as the origin, and the outer edges of the traction line holes and the enhancement holes are respectively located in a circle with a diameter of R1 with the center of the fixing plate as the origin, so that the fixing plate is closely fitted with the bone surface in the proximal tunnel, and the size of the proximal tunnel is suitable for the circle with a diameter of R1; The two reinforcement holes are arranged correspondingly with the center of the fixing plate as the origin, and the bridge between the two reinforcement holes should be the middle suspension tensioning part of the flexible support member, and the stress of the bridge should be greater than the maximum tension of the middle suspension tensioning of the flexible support member; The flexible support member includes a first end portion, a first intermediate support portion, an intermediate suspension tensioning portion, a second intermediate support portion and a second end portion in sequence; the intermediate suspension tensioning portion is located at the bridge portion, and support points for tightening and fixing the two ends of the flexible support member are located on the intermediate suspension tensioning portion, and the first intermediate support portion and the second intermediate support portion are at least partially located in the stump channel for pre-repair of the damaged tissue, and are used to provide support and a repair channel for the self-repair of the damaged tissue of the stump; The flexible support member is a flexible medical suture, and the middle suspension tensioning portion is slightly thinner than the first middle support portion and the second middle support portion.

2. The system for repairing damaged tissue according to claim 1, characterized in that: The two ends of the flexible support member are used to be tightened and fixed on the bone surface in the distal tunnel near the distal end side.

3. A system for cruciate ligament reconstruction, characterized in that: At least comprises a fixing plate for fixing on the femur, a flexible support member, and a plurality of traction wires, wherein the fixing plate is provided with traction wire holes adapted to the number of the traction wires and at least two reinforcement holes for the flexible support member to pass through, one end of the traction wire is used for traction of the proximal ligament tissue of the stump, and the other end is used for passing through the traction wire hole through the femoral tunnel and fixing it on the fixing plate; The two ends of the flexible support member are respectively used to penetrate the two reinforcement holes and enter the stump channel of the pre-repaired damaged tissue, and then pass through the tibial tunnel to tighten and fix the two ends to the tibial ends opposite to the stump; The flexible support member is used to provide support and a repair channel for the damaged tissue of the stump to repair itself, so that the damaged tissue of the stump maintains tension and position, which is beneficial to its short-term repair and long-term healing; Wherein, the fixing plate is used to be arranged on the femoral bone surface of the femoral tunnel, the traction line hole and the reinforcement hole are distributed with the center of the fixing plate as the origin, and the outer edges of the traction line hole and the outer edges of the reinforcement hole are respectively located in a circle with a diameter of R1 and the center of the fixing plate as the origin, so that the fixing plate and the bone surface in the femoral tunnel are closely fitted, and the size of the femoral tunnel is suitable for the circle with a diameter of R1; The two reinforcement holes are arranged correspondingly with the center of the fixing plate as the origin, and the bridge part between the two reinforcement holes is used as the middle suspension tensioning part of the flexible support member, the stress of the bridge part should be greater than the maximum tension of the middle suspension tensioning of the flexible support member, and the bridge part is in an upward, concave or smooth filtering structure; The flexible support member includes a first end portion, a first intermediate support portion, an intermediate suspension tensioning portion, a second intermediate support portion and a second end portion in sequence; the intermediate suspension tensioning portion is located on the bridge portion, and the support points for tightening and fixing the two ends of the flexible support member are located on the intermediate suspension tensioning portion, and the first intermediate support portion and the second intermediate support portion are at least partially located in the stump channel for pre-repair of the damaged tissue, and are used to provide support and a repair channel for the self-repair of the damaged tissue of the stump; The flexible support member is a flexible medical suture, and the middle suspension tensioning portion is slightly thinner than the first middle support portion and the second middle support portion.

4. The cruciate ligament reconstruction system according to claim 3, characterized in that: The size of the femoral tunnel opened is no larger than 4.5 mm.

5. The cruciate ligament reconstruction system according to claim 3, characterized in that: The thickness of the intermediate suspension tensioning portion is 1 mm, and its width is no greater than 1 mm. The width of the bridge portion between the two reinforcement holes should be no greater than 1.2 mm.

6. The cruciate ligament reconstruction system according to claim 3, characterized in that: The widths of the first intermediate support portion and the second intermediate support portion are no greater than 3 mm, and the overall breaking strength of the flexible support member is greater than 7686N.

7. The cruciate ligament reconstruction system according to claim 3, characterized in that: The system further comprises a flexible support member fixing member for fixing both ends of the flexible support member.

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