Fixing titanium plate assembly for repairing anterior and posterior cruciate ligaments

Abstract

The utility model discloses a fixed titanium plate assembly for repairing anterior and posterior cruciate ligaments. The fixed titanium plate assembly comprises a fixed plate body and a wire passing hole group arranged on the fixed plate body in a penetrating manner, the thread passing hole group comprises a first hole for a turnover thread to pass through, a second hole and a third hole for a closed coil to pass through together, a fourth hole for a combined thread to pass through and a fifth hole for a titanium plate lead to pass through; and the titanium plate lead is arranged on the combined suture in a penetrating manner through the suture lead. The novel and efficient titanium plate fixing assembly is provided for anterior and posterior cruciate ligament repair by ingeniously combining the sutures, the belt carrier titanium plate and the anchor nails, the surgical operation process is optimized, the fixing stability of the graft is improved, the risk of surgical complications is reduced, meanwhile, the strength and durability of the graft are enhanced, and the application prospect is wide. Therefore, the recovery process of the patient is accelerated, and the operation success rate is improved.

Description

Technical Field

[0001] This utility model relates to titanium plate assemblies, and more particularly to a fixation titanium plate assembly for anterior and posterior cruciate ligament repair. Background Technology

[0002] In current clinical practice, arthroscopic anterior cruciate ligament (ACL) reconstruction has become the primary treatment for ACL injuries. Its core objective is to restore normal biomechanical function of the knee joint, helping patients return to sports. The fixation method of the graft is crucial in this process. Fixation methods for ACL reconstruction grafts include: femoral-side looped titanium plate fixation, tibial-side compression screw fixation, combined fixation with compression screws and looped titanium plates, and looped titanium plate fixation. Because the latter two methods require a higher level of surgical skill, the femoral-side looped titanium plate and tibial-side compression screw fixation method is currently widely used in ACL reconstruction due to its simplicity and significant effectiveness.

[0003] However, traditional looped titanium plate fixation methods have certain limitations, such as the possibility of fatigue extension of the coil and insufficient fixation strength, which may lead to decreased implant stability and affect the long-term results of the surgery. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a fixation titanium plate assembly for anterior and posterior cruciate ligament repair.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: a fixation titanium plate assembly for anterior and posterior cruciate ligament repair, comprising:

[0006] A fixed plate and a group of wire-passing holes installed on the fixed plate;

[0007] The thread guide hole group includes a hole for passing through the flip-up suture, two and three holes for passing through the closed loop together, a four hole for passing through the combined suture, and a five hole for passing through the titanium plate lead wire;

[0008] The titanium plate lead wire is threaded onto the composite seam through a seam lead wire.

[0009] Furthermore, the wire holes are arranged in a straight line along the length of the fixed plate.

[0010] Furthermore, the wire hole groups are arranged in a straight line as follows: one hole, two holes, three holes, four holes, and five holes.

[0011] Furthermore, the two ends of the fixed plate along the length direction are curved edges, and the two ends along the width direction are straight edges.

[0012] Furthermore, after the folded-over stitch is passed through a hole in the fixed plate, the thread ends are aligned and folded in half.

[0013] Furthermore, the closed coil is woven from a single thread with a one-way locking function.

[0014] Furthermore, the combined stitching consists of a thick thread and a tape. The tape is repeatedly passed through the thick thread and then through the four holes of the fixed plate. One end of the tape faces the direction of the closed coil, which has a one-way locking function.

[0015] Furthermore, the length of the coarse thread in the composite suture is 20mm-40mm and the diameter is 0.8mm-1.2mm; the width of the thread strip in the composite suture is 1.5mm-2.5mm and the length is 950mm-1200mm.

[0016] Furthermore, the titanium plate lead wire is a single thread that passes through five holes in the fixed plate and forms a loop on the five holes where the short end of the lead wire is hidden inside the long end of the lead wire.

[0017] Furthermore, the stitch length of the titanium plate lead wire is 900-1200mm, and the wire diameter is 0.6-0.8mm.

[0018] This invention proposes a fixation titanium plate assembly for anterior and posterior cruciate ligament repair, combining sutures, a looped titanium plate, and anchors. Its application during surgery offers the following advantages:

[0019] Preventing fatigue extension: By combining sutures and anchors, fatigue extension of the looped titanium plate can be effectively prevented, ensuring the long-term stability of the graft.

[0020] Increased graft strength: Enhanced graft fixation strength, reducing the risk of graft breakage or loosening due to insecure fixation.

[0021] Enhanced auxiliary fixation: The new fixation method provides additional auxiliary fixation for the graft, thereby improving the overall stability and reliability of the surgery. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the fixed plate of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the combined suture of this utility model.

[0024] Figure 3 This is a structural schematic diagram of the fixed titanium plate assembly of this utility model.

[0025] Figure 4 This is a schematic diagram of the anterior and posterior cruciate ligament repair and fixation state according to this utility model.

[0026] Figure 5 for Figure 4 A magnified schematic diagram of the structure in the middle circle.

[0027] Figure 6 This is a schematic diagram of the anchor inserter used in the embodiments of this patent.

[0028] In the diagram: 1. Titanium plate lead wire; 2. Sewing lead wire; 3. Fixing plate; 4. Combined sewing thread; 5. Closed loop; 6. Turning sewing thread; 7. Thread buckle; 4a. Coarse sewing thread; 4b. Root band; a. One hole; b. Two holes; c. Three holes; d. Four holes; e. Five holes. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Example 1;

[0031] like Figure 1 and Figure 3 The image shows the main body 3 of a fixation titanium plate assembly for anterior and posterior cruciate ligament repair, along with a group of suture holes on the fixation plate 3. Preferably, the fixation plate 3 is a flat, elongated strip and is a titanium plate with five suture holes arranged in a straight line: hole a, hole b, hole c, hole d, and hole e. The diameter of the five suture holes is adapted to the diameter of the suture wire. The straight-line arrangement of the suture holes, combined with the flat, elongated titanium plate, improves the passability of the fixation titanium plate assembly. Preferably, in this embodiment, the two ends of the fixation plate 3 along the length direction are curved edges, and the two ends along the width direction are straight edges. The straight edges ensure the passability of the fixation plate, while the curved edges ensure that the fixation plate will not scratch the ligament.

[0032] In other embodiments, the five wire holes may also be arranged in a non-linear manner.

[0033] like Figure 1 As shown, five suture holes form a suture hole group. Hole a is used to pass through the flip suture 6. The flip suture 6 uses a suture with a diameter matching that of hole a. In this example, after the flip suture 6 passes through hole a of the fixation plate 3, the suture end is aligned and folded in half. The flip suture 6 is used to flip the fixation plate 3 to the lateral side of the femoral cortex, ensuring that the fixation plate can be firmly fixed to the femur, providing a stable fixation point for the graft. By using the flip suture 6, the fixation plate can be easily flipped, improving surgical efficiency. Furthermore, due to its special folding design, suture end exposure can be reduced, lowering the risk of infection. In other embodiments, the suture end of the flip suture 6 can also be folded in a non-aligned manner, as long as it can achieve the traction effect on hole a.

[0034] The two holes (b) and three holes (c) are used together to pass through the closure coil 5. The closure coil 5 is woven from a single suture with a one-way locking function. The structure of the closure coil 5 is consistent with that of commercially available coils with looped titanium plates. It is used to maintain the position of the graft and acts as a guide during surgical procedures, ensuring that the graft can pass smoothly through the bone tunnel. The one-way locking characteristic of the coil 5 can prevent the graft from slipping during traction, ensuring the smooth progress of the surgery, and also reducing graft movement in the bone tunnel, which is beneficial to healing.

[0035] The four holes d are used to pass through the combined suture 4; as shown in the example. Figure 2 As shown, the combined suture 4 consists of a thick suture 4a and a strip 4b. The strip is repeatedly inserted and exited through the thick suture and then passes through the four holes d of the fixation plate 3. One end of the strip faces the direction of the closed coil 5, which has a one-way locking function. Preferably, the length of the thick suture in the combined suture 4 is 20mm-40mm, and the diameter is 0.8mm-1.2mm; the width of the strip in the combined suture 4 is 1.5mm-2.5mm, and the length is 950mm-1200mm. The combined suture 4, through the holes d, is used to establish a connection between the fixation plate 3 and the graft, and to fix the graft within the tibial bone tunnel postoperatively. The design of the combined suture 4 allows for adjustment of the graft's position postoperatively by pulling on the tail end, ensuring a tight fit within the bone tunnel and promoting healing.

[0036] The five holes e are used to pass through the titanium plate guide 1; the titanium plate guide 1 is a suture, preferably with a length of 900-1200 mm and a diameter of 0.6-0.8 mm. The titanium plate guide 1 passes through the five holes e of the fixing plate 3, and a suture loop 7 is formed on the five holes e, where the short end of the suture is hidden within the long end. The titanium plate guide 1, passing through the holes e, is used to pull the titanium plate between the femur and tibia. The hidden design of the titanium plate guide 1 can prevent the suture end from irritating the soft tissue, while also facilitating operation and reducing surgical time.

[0037] In this design, the titanium plate guide 1 is threaded onto the composite suture 4 via the suture guide 2. The suture guide 2 pulls on the composite suture 4, preventing the risk that the thick suture will be compressed and unable to pass through the bone passage during the dragging process.

[0038] Specifically, the following describes how this patent works in conjunction with a surgical procedure. The method used in this embodiment is as follows: Figure 6 The assembly shown includes an anchor inserter 7, a fixing suture 8, an anchor body 9, an anchor head 10, and a wire clip 11. The anchor body 9 has a diameter of 4-5 mm and a length of 10-15 mm, while the anchor head 10 has a diameter of 2-3 mm and a length of 3-5 mm.

[0039] Following standard surgical procedures, the graft is braided and passed through the closed loop 5. With the knee joint extended, the guide needle is inserted into the joint cavity from the lateral aspect of the femoral cortex along the bone tunnel and exits from the tibial bone tunnel. The titanium plate guide 1 is inserted into the guide needle hole, and the titanium plate is pulled towards the femoral bone tunnel. Because the suture guide 2 is inserted into the titanium plate guide 1, the risk of the thick suture being compressed and unable to pass through the bone tunnel during the pulling process is prevented. Once the titanium plate is exposed on the lateral aspect of the femoral cortex, the fixation plate 3 is flipped onto the lateral aspect of the femoral cortex using the flip suture 6. The flip suture 6, suture guide 2, and titanium plate guide 1 are removed respectively. The tail of the closed loop 5 is pulled to ensure the graft is completely fitted into the bone tunnel. The tail of the closed loop 5 is cut off. The tail of the combined suture 4 is pulled forcefully on the lateral aspect of the tibial bone tunnel to tighten the thick suture of the combined suture 4, stacking it above the hole d of the fixation plate 3. The graft and the suture band of the combined suture 4 are simultaneously fixed in the tibial bone tunnel using a compression screw. Drill a bone tunnel with a diameter the same as the base diameter of the anchor body 9 and a depth of 20 mm, located 10-15 mm lateral to the tibial tunnel. Using a suture clip 11, thread the suture tape of the composite suture 4 through the anchor head 10. Insert the anchor into the bone tunnel using the anchor inserter 7 to complete the auxiliary fixation. Remove the fixation suture 8 and cut off any excess graft and composite suture 4 to complete the fixation. Figure 4 and Figure 5 The image shows the final state of the anterior and posterior cruciate ligament repair and fixation.

[0040] Example 2;

[0041] While saving the use of suture thread based on Example 1 reduces processing difficulty, it cannot achieve the pulling of the combined sutures.

[0042] In summary, this patent combines sutures, looped titanium plates, and anchors in surgical applications to prevent fatigue elongation, increase graft strength, and enhance auxiliary fixation. Specifically, the combined suture bands increase graft strength, the contraction and overlapping of thicker sutures enhance the suspension capacity of the looped titanium plate, reducing coil elongation after fatigue, and the anchor body and head secure the combined suture bands, further strengthening the overall fixation of the product.

[0043] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A fixation titanium plate assembly for anterior cruciate ligament repair, characterized in that, include: Fixed plate (3) and wire through holes provided on the fixed plate (3); The thread hole group includes a hole (a) for passing through the flip suture (6), two holes (b) and three holes (c) for passing through the closed coil (5) together, a hole (d) for passing through the combined suture (4) and a hole (e) for passing through the titanium plate lead wire (1); The titanium plate lead wire (1) is threaded onto the combined seam (4) via the seam lead wire (2).

2. The fixation titanium plate assembly for anterior-posterior cruciate ligament repair of claim 1, wherein: The wire hole group is arranged in a straight line along the length of the fixed plate (3).

3. The fixed titanium plate assembly for anterior-posterior cruciate ligament repair of claim 2, wherein: The wire hole groups are arranged in a straight line as follows: one hole (a), two holes (b), three holes (c), four holes (d), and five holes (e).

4. The fixation titanium plate assembly for anterior-posterior cruciate ligament repair according to claim 1 or 3, characterized in that: The fixed plate (3) has two curved edges along its length and two straight edges along its width.

5. The fixation titanium plate assembly for anterior-posterior cruciate ligament repair according to claim 1 or 3, characterized in that: After the flip-over stitch (6) passes through a hole (a) in the fixed plate (3), the thread ends are aligned and folded in half.

6. The fixed titanium plate assembly for anterior-posterior cruciate ligament repair of claim 1 or 3, wherein: The closed coil (5) is woven from a thread with a one-way locking function.

7. The fixed titanium plate assembly for anterior-posterior cruciate ligament repair of claim 6, wherein: The combined suture (4) It consists of a thick thread and a strip. The strip is inserted into the four holes (d) of the fixed plate (3) after being repeatedly inserted and removed from the thick thread. One end of the strip is directed toward the closed coil (5) to have a one-way locking function.

8. The fixation titanium plate assembly for anterior-posterior cruciate ligament repair of claim 7, wherein: The length of the coarse suture of the combined suture (4) is 20mm-40mm and the diameter is 0.8mm-1.2mm; the width of the suture band of the combined suture (4) is 1.5mm-2.5mm and the length is 950mm-1200mm.

9. The fixation titanium plate assembly for anterior-posterior cruciate ligament repair according to claim 1 or 3, characterized in that: The titanium plate lead wire (1) is a sewing thread. The titanium plate lead wire (1) passes through the five holes (e) of the fixed plate (3) and forms a wire loop (7) on the five holes (e) where the short end of the wire is hidden in the long end of the wire.

10. The fixation titanium plate assembly for anterior cruciate ligament repair according to claim 9, wherein: The length of the lead wire (1) of the titanium plate is 900-1200mm and the wire diameter is 0.6-0.8mm.

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