Ligament-reinforced adjustable belt carrier titanium plate and use method thereof

Abstract

The invention discloses a ligament-reinforced adjustable belt-loop titanium plate and a using method thereof.The belt-loop titanium plate comprises a first titanium plate body, an adjustable coil and a ligament-reinforced line belt which penetrate through the two sides of the first titanium plate body, a traction line and a loop turning line which are arranged on the upper side and the lower side of the first titanium plate body respectively, and a second titanium plate body connected with the adjustable coil and the ligament-reinforced line belt; first connecting holes are formed in the upper side and the lower side of the middle of the first titanium plate, a second connecting hole and a third connecting hole are formed in the upper end and the lower end of the first titanium plate respectively, a loop turning line is installed in the first connecting hole in the upper side, a traction line is installed in the third connecting hole in the lower side, and the two ends of an adjustable coil and the two ends of a ligament reinforcing line belt are installed in the second connecting hole. According to the medical polymer braided fabric reinforced ligament reinforced adjustable belt carrier titanium plate, after surgical implantation, a patient can recover the motion function more quickly, and under the condition that the reconstructed ligament does not grow well completely, the motion possibility can be achieved by means of the reinforced thread belt.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a ligament-reinforced adjustable titanium plate with loops and a use method thereof. Background Art

[0002] Titanium plates with loops are commonly used consumables for reconstruction of the cruciate ligament of the knee in the field of sports medicine. They are used to fix the newly constructed ligament to the bone. According to whether the length is adjustable, they can be divided into titanium plates with fixed length loops and titanium plates with adjustable length loops. Fixed-length adjustable titanium plates with loops were used earlier. The advantage is that the titanium plate and the head end of the ligament do not need to be knotted and fixed at the femoral end, and the fixation is firm and reliable. The disadvantage is that the coil length cannot be adjusted. After the loop is turned, there is a gap between the end face of the ligament and the cortical bone outside the bone tunnel, which is not conducive to the natural growth and reconstruction of the ligament. The adjustable titanium plate with loops has an adjustable coil length. After the head end of the ligament is fixed to the femoral end through the coil and the titanium plate, the end face of the ligament can be made as close to the cortical bone as possible by tightening the tail end of the coil. In this way, the gap between the end face of the ligament and the cortical bone can be almost ignored, which is conducive to the growth of the newly implanted ligament toward the cortical bone outside the bone tunnel. From the perspective of biomechanics and tissue growth, the adjustable titanium plate with loops is more conducive to the recovery of patients undergoing surgical reconstruction.

[0003] Although the current fixed-loop titanium plates and adjustable-loop titanium plates can meet almost 80% of the requirements for sports medicine cruciate ligament reconstruction surgery due to their respective characteristics, many young patients, especially athletes and sports enthusiasts, still hope to have more convenient surgery and shorter recovery time when facing the problem of long recovery time after cruciate ligament rupture reconstruction surgery, so that they can return to the sports field faster;

[0004] In view of the above situation, it is necessary to improve the existing titanium plate with loops and the method of using the same so that the titanium plate with loops can meet the current needs of using the titanium plate with loops. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a ligament-reinforced adjustable titanium plate with a loop, comprising a first titanium plate, an adjustable coil passing through both sides of the first titanium plate, a ligament-reinforced line belt, a pulling wire and a turning loop wire respectively arranged on the upper and lower sides of the first titanium plate, and a second titanium plate connected to the adjustable coil and the ligament-reinforced line belt, wherein first connecting holes are provided on the upper and lower sides in the middle of the first titanium plate, second connecting holes and third connecting holes are respectively provided at the upper and lower ends of the first titanium plate, the turning loop wire is installed in the first connecting hole on the upper side, the pulling wire is installed in the third connecting hole on the lower side, and the two ends of the adjustable coil and the two ends of the ligament-reinforced line belt are installed in the second connecting hole.

[0006] As a further supplement to the technical solution, the first titanium plate and the second titanium plate are made of titanium alloy or medical-grade polyetheretherketone polymer material.

[0007] As a further supplement to the technical solution, the adjustable coil is made by hooking two tail ends of a round wire braided suture with a hole in the center and then passing through the center hole.

[0008] As a further supplement to the technical solution, the adjustable coil is made of ultra-high molecular weight polyethylene material.

[0009] As a further supplement to the technical solution, the two ends of the ligament reinforcement line band have circular cross-sections and the middle thereof is in the shape of a flat belt.

[0010] As a further supplement to the technical solution, the material of the ligament reinforcement band is ultra-high molecular weight polyethylene material or absorbable material.

[0011] As a further supplement to the technical solution, the absorbable material is PGA or silk fibroin material.

[0012] A method for using a ligament-enhanced adjustable titanium plate with loops comprises the following steps:

[0013] The first step is to obtain the autologous ligament to be transplanted;

[0014] The second step is to fold the autologous ligament and bind and connect its two ends with the adjustable coil through the ligament braided binding wire;

[0015] The third step is to make positioning marks on the femur and tibia of the knee joint to be transplanted;

[0016] The fourth step is to drill bone tunnels at the corresponding positions of the femur and tibia using positioning hooks, drill bits and other instruments;

[0017] Step 5: Under arthroscopy, use the wire guide to guide the tail end of the adjustable coil, the traction wire and the loop wire out of the cortical bone of the femoral tunnel along the femoral tunnel;

[0018] Step 6: Pull the pulling wire, loop wire and adjustable coil tail wire out of the femoral tunnel in step 5, pull the first titanium plate out of the femoral tunnel, and adjust the position of the first titanium plate through the loop wire so that it is horizontally close to the cortical bone of the femoral tunnel opening;

[0019] Step 7: Use a wire guide to bring the tail end of the adjustable coil and the tail end of the ligament reinforcement wire at the other end of the autologous ligament to be transplanted out of the cortical bone outside the bone tunnel along the tibial tunnel;

[0020] Step 8: Pull out the pulling wire and loop wire on the first titanium plate, gradually tighten the tail end of the adjustable coil at the femoral end, make the head end of the implanted ligament close to the cortical bone in the femoral tunnel, and at the same time, the first titanium plate close to the cortical bone outside the femoral tunnel opening, tie a knot to fix the tail end of the adjustable coil wire and cut off the excess wire ends;

[0021] Step 9: Use the wire guide to bring the adjustable coil tail wire and the ligament reinforcement wire tail wire at the other end of the implanted ligament out of the tibial tunnel through the tibial tunnel, and gradually tighten the adjustable coil tail wire to make the other end of the implanted ligament as close to the cortical bone on the outside of the tibial tunnel as possible;

[0022] Step 10. Tighten the tail wire of the adjustable coil at the tibia end and insert it into the corresponding hole of the second titanium plate, tie a knot at the tail end, and cut off the excess wire ends.

[0023] Step 11. After adjusting the tension of the ligament reinforcement line, insert its tail end into the other two corresponding holes of the second titanium plate, tie a knot to fix it, and cut off the excess line ends;

[0024] Step 12: The operation is completed after cleaning and suturing the surgical wound.

[0025] The beneficial effect is that the present invention adopts a ligament-reinforced adjustable titanium plate with a loop reinforced by a medical polymer braid, which can enable the patient to recover motor function faster after surgical implantation, and can realize movement with the help of the reinforced wire belt when the reconstructed ligament has not yet fully grown. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the adjustable coil of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the ligament reinforcement line belt of the present invention;

[0029] Figure 4 This is a schematic diagram of the ligament-enhanced adjustable titanium plate with loops before implantation;

[0030] Figure 5 It is a schematic diagram of the structure of the femur and tibia of the present invention without implanting the titanium plate with loop;

[0031] Figure 6 This is a schematic diagram of the ligament-enhanced adjustable titanium plate with loops after implantation;

[0032] In the figure, 1. the first titanium plate; 2. the adjustable coil; 3. the ligament reinforcement wire; 4. the pulling wire; 5. the turning loop wire; 6. the second titanium plate. DETAILED DESCRIPTION

[0033] In order to make the technical solution more clear to those skilled in the art, Figure 1 -6 Detailed description of the technical solution of the present invention:

[0034] The original intention of the design of the present invention is to target many young patients, especially athletes and sports enthusiasts, who hope to recover their sports functions faster after the reconstruction of the cruciate ligament rupture of the knee joint, return to the sports arena or meet the need of self-care ability in daily life. Based on the previous rich research and development and production of implant consumables such as titanium plates with loops and adjustable titanium plates, the applicant has cooperated with many front-line surgeons and, after repeated trial production practices, developed a ligament-reinforced adjustable titanium plate with loops reinforced with medical polymer braids. After surgical implantation, the patient can recover his sports functions faster, and when the reconstructed ligament has not yet fully grown, the possibility of movement can be achieved with the help of the reinforced wire band;

[0035] A ligament-enhanced adjustable titanium plate with loops, as shown in the attached Figure 1 As shown, it includes a first titanium plate 1, an adjustable coil 2 passing through both sides of the first titanium plate 1, a ligament reinforcement band 3, a pulling wire 4 and a turning loop wire 5 respectively arranged on the upper and lower sides of the first titanium plate 1, and a second titanium plate 6 connected to the adjustable coil 2 and the ligament reinforcement band 3. The first titanium plate 1 is provided with a first connecting hole on the upper and lower sides in the middle, and the first titanium plate 1 is provided with a second connecting hole and a third connecting hole at the upper and lower ends respectively. The turning loop wire 5 is installed in the first connecting hole on the upper side, and the pulling wire 4 is installed in the third connecting hole on the lower side. The two ends of the adjustable coil 2 and the two ends of the ligament reinforcement band 3 are installed in the second connecting hole; the first titanium plate 1 and the second titanium plate 6 are made of titanium alloy or medical grade polyetheretherketone polymer material.

[0036] As attached Figure 2 As shown, the adjustable coil 2 is made of a round wire braided suture with a hole in the center, the two tail ends of which are hooked and then passed through the center hole, wherein the adjustable coil 2 is made of ultra-high molecular weight polyethylene material.

[0037] As attached Figure 3 As shown, the two ends of the ligament reinforcement band 3 are circular cross-sections and the middle is flat-ribbon-shaped; wherein, the material of the ligament reinforcement band 3 is ultra-high molecular weight polyethylene material or absorbable material; if the ligament reinforcement band 3 is made of ultra-high molecular weight polyethylene material, it is beneficial to increase the ligament strength and quickly restore the joint movement function in the early stage of the growth and recovery of the newly implanted ligament, and it is beneficial to guide the growth of new ligament tissue in the later stage, and play the role of tissue engineering scaffold; if the ligament reinforcement band 3 is made of absorbable material such as PGA or silk protein material, it can provide sports strength support to the joint in the early stage of the recovery of the newly implanted ligament, and can be gradually decomposed or absorbed in the later stage of the recovery of the newly implanted ligament.

[0038] A method for using a ligament-enhanced adjustable titanium plate with loops comprises the following steps:

[0039] The first step is to obtain the autologous ligament to be transplanted;

[0040] The second step is to fold the autologous ligament and connect its two ends to the adjustable coil 2 by binding with the ligament braided binding wire; Figure 4 ;

[0041] The third step is to make positioning marks on the femur and tibia of the knee joint to be transplanted;

[0042] Step 4: Use positioning hooks, drills and other instruments to drill bone tunnels at the corresponding positions of the femur and tibia; Figure 5 As shown;

[0043] Step 5: Under arthroscopy, use a wire guide to extend the femoral tunnel to bring the tail end of the adjustable coil 2, the traction wire 4 and the loop wire 5 out of the cortical bone of the femoral tunnel;

[0044] Step 6: Pull the pulling wire 4, the loop wire 5 and the tail end wire of the adjustable coil 2 out of the femoral tunnel in step 5, pull the first titanium plate 1 out of the femoral tunnel, and adjust the position of the first titanium plate 1 through the loop wire 5 so that it is horizontally close to the cortical bone of the femoral tunnel opening;

[0045] Step 7: Use a wire guide to bring the tail end of the adjustable coil 2 and the tail end of the ligament reinforcement wire band 3 at the other end of the autologous ligament to be transplanted out of the cortical bone outside the bone tunnel along the tibial tunnel;

[0046] Step 8: Pull out the pulling wire 4 and the loop wire 5 on the first titanium plate 1, gradually tighten the tail end of the adjustable coil 2 at the femoral end, so that the head end of the implanted ligament is close to the cortical bone in the femoral tunnel, and the first titanium plate 1 is close to the cortical bone outside the femoral tunnel opening, and the tail end of the adjustable coil 2 is knotted and fixed, and the excess thread ends are cut off;

[0047] Step 9: Use the wire guide to bring the tail wire of the adjustable coil 2 and the tail wire of the ligament reinforcement band 3 at the other end of the implanted ligament out of the tunnel along the tibial tunnel, and gradually tighten the tail wire of the adjustable coil 2 to make the other end of the implanted ligament as close to the cortical bone on the outside of the tibial tunnel as possible;

[0048] Step 10, tighten the tail wire of the adjustable coil 2 at the tibia end and insert it into the corresponding hole of the second titanium plate 6, tie a knot at the tail end, and cut off the excess wire ends;

[0049] Step 11: After adjusting the tension of the ligament reinforcement line 3, insert its tail end into the other two corresponding holes of the second titanium plate 6, tie a knot to fix it, and cut off the excess thread ends; Figure 6 As shown;

[0050] Step 12: The operation is completed after cleaning and suturing the surgical wound.

[0051] The present invention adds a ligament reinforcement line 3 on the basis of the existing knee joint cruciate ligament reconstruction, which is beneficial to increase the ligament strength when the newly implanted ligament of the patient has not grown well, achieve the purpose of quickly restoring the movement function, and shorten the patient's recovery time;

[0052] This surgical method is an upgrade and enhancement of the existing surgery. Without increasing the difficulty and time of the surgery, adding a ligament reinforcement band 3 can provide protection for the movement safety during the recovery of the newly implanted ligament, which is beneficial to improving the success rate of existing knee ligament reconstruction surgery.

[0053] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A ligament-enhanced adjustable titanium plate with loops, characterized in that: The invention comprises a first titanium plate (1), an adjustable coil (2) passing through both sides of the first titanium plate (1), a ligament reinforcement line (3), a pulling line (4) and a turning line (5) respectively arranged on the upper and lower sides of the first titanium plate (1), and a second titanium plate (6) connected to the adjustable coil (2) and the ligament reinforcement line (3), wherein first connecting holes are arranged on the upper and lower sides of the middle of the first titanium plate (1), and second connecting holes and third connecting holes are respectively arranged at the upper and lower ends of the first titanium plate (1), the turning line (5) is installed in the first connecting hole on the upper side, the pulling line (4) is installed in the third connecting hole on the lower side, and the two ends of the adjustable coil (2) and the two ends of the ligament reinforcement line (3) are installed in the second connecting hole.

2. The ligament-reinforced adjustable titanium plate with loop according to claim 1, characterized in that: The first titanium plate (1) and the second titanium plate (6) are made of titanium alloy or medical-grade polyetheretherketone polymer material.

3. The ligament-reinforced adjustable titanium plate with loop according to claim 2, characterized in that: The adjustable coil (2) is made by hooking two tail ends of a round braided suture with a hole in the center and then passing through the center hole.

4. The ligament-reinforced adjustable titanium plate with loop according to claim 3, characterized in that: The adjustable coil (2) is made of ultra-high molecular weight polyethylene material.

5. The ligament-reinforced adjustable titanium plate with loop according to claim 1, characterized in that: The two ends of the ligament reinforcement line band (3) have circular cross-sections and the middle thereof is in the shape of a flat band.

6. The ligament-reinforced adjustable titanium plate with loop according to claim 1, characterized in that: The material of the ligament reinforcement band (3) is ultra-high molecular weight polyethylene material or absorbable material.

7. The ligament-reinforced adjustable titanium plate with loop according to claim 6, characterized in that: The absorbable material is PGA or silk fibroin material.

8. A method for using a ligament-reinforced adjustable titanium plate with loops according to any one of claims 1 to 7, characterized in that: The following steps are involved: The first step is to obtain the autologous ligament to be transplanted; The second step is to fold the autologous ligament and bind and connect its two ends with the adjustable coil (2) by means of a ligament braided binding wire; The third step is to make positioning marks on the femur and tibia of the knee joint to be transplanted; The fourth step is to drill bone tunnels at the corresponding positions of the femur and tibia using positioning hooks, drill bits and other instruments; Step 5: Under arthroscopy, use a wire guide to guide the tail end of the adjustable coil (2), the traction wire (4) and the loop wire (5) out of the cortical bone of the femoral tunnel along the femoral tunnel; Step 6: Pull the pulling wire (4), the loop wire (5) and the tail end wire of the adjustable coil (2) out of the femoral tunnel in Step 5, pull the first titanium plate (1) out of the femoral tunnel, and adjust the position of the first titanium plate (1) by the loop wire (5) so that it is horizontally close to the cortical bone of the femoral tunnel opening; Step 7: Use a wire guide to bring the tail end of the adjustable coil (2) and the tail end of the ligament reinforcement wire band (3) at the other end of the autologous ligament to be transplanted out of the cortical bone outside the bone tunnel along the tibial tunnel; In the eighth step, the pulling wire (4) and the turning loop wire (5) on the first titanium plate (1) are pulled out, and the tail end of the adjustable coil (2) at the femoral end is gradually tightened, so that the head end of the implanted ligament is closely attached to the cortical bone in the femoral tunnel, and at the same time, the first titanium plate (1) is closely attached to the cortical bone outside the femoral tunnel opening, and the tail end of the adjustable coil (2) is knotted and fixed, and the excess thread ends are cut off; Step 9: Use a wire guide to bring the tail wire of the adjustable coil (2) and the tail wire of the ligament reinforcement band (3) at the other end of the implanted ligament out of the tunnel through the tibial tunnel, and gradually tighten the tail wire of the adjustable coil (2) so that the other end of the implanted ligament is as close as possible to the cortical bone on the outside of the tibial tunnel; Step 10, tighten the tail wire of the tibial end adjustable coil (2) and insert it into the corresponding hole of the second titanium plate (6), tie a knot at the tail end, and cut off the excess wire ends; Step 11: After adjusting the tension of the ligament reinforcement line (3), insert its tail end into the other two corresponding holes of the second titanium plate (6), tie a knot to fix it, and cut off the excess line ends; Step 12: The operation is completed after cleaning and suturing the surgical wound.

Images