Fixing device for ligament reconstruction and use method thereof

A technology for ligament reconstruction and fixation devices, which is applied in the direction of ligaments and muscles, which can solve the problems of increased contact area between the fixation device and the outer bone of the bone canal, small bone plate falling, etc., so as to improve the satisfaction of surgery and reduce the chance of revision , fixed effect, stable effect

Active Publication Date: 2018-12-18
西安卓恰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the various defects in the existing fixation device and method for the femoral end of anterior cruciate ligament repair surgery, the present invention provides a fixation device for ligament reconstruction, which greatly increases the contact area between the fixation device and the bone outside the bone tract, thereby effectively solving the problem of using Small bone plate falling problem after repair

Method used

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  • Fixing device for ligament reconstruction and use method thereof
  • Fixing device for ligament reconstruction and use method thereof
  • Fixing device for ligament reconstruction and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Magnesium ingots with a purity greater than 99.9%, Mg-Ca master alloys with a purity greater than 99.9%, and zinc particles with a purity greater than 99.9% are mixed according to a certain ratio and treated as raw materials in a vacuum melting furnace. After vacuum melting, 0.92wt %Ca, 2.17wt%Zn, magnesium alloy with impurity content less than 0.01%. The obtained magnesium alloy is extruded into a Φ12mm bar after removing surface defects, and then swaged to obtain a Φ5mm bar. The measured mechanical properties of the magnesium-zinc-calcium bar obtained in this embodiment are: yield strength ≥ 250 MPa, tensile strength ≥ 320 MPa, and elongation ≥ 10%. Its grain diameter is ≤8μm.

[0045] After the rough skin is removed by swaging the bar, the fixing parts and flaps are processed. After the processed fixing parts and flaps are polished with 400-800-2000 mesh sandpaper, they are polished in perchloric acid-absolute ethanol electrolytic polishing solution. The polished m...

Embodiment 2

[0049] The raw material of Example 1 is vacuum smelted in a vacuum smelting furnace to obtain a magnesium alloy with 0.45wt% Ca, 1.89wt% Zn and impurity content less than 0.01%. The obtained magnesium alloy is extruded into a Φ12mm rod after removing surface defects, and then swaged to obtain a Φ5.5mm rod. The measured mechanical properties of the magnesium-zinc-calcium bar material obtained in this embodiment are: yield strength ≥ 240 MPa, tensile strength ≥ 290 MPa, and elongation ≥ 15%. Its grain diameter is ≤10μm.

[0050] The swaged bar is ground and processed by the method in Example 1 to form a fixed piece and a flap, and then electropolished. Processing size: the size of the fixing piece is Φ4×4mm, the width of the beam of the fixing piece is 1mm; the width of the flap is 1mm, the length is 5mm, the thickness is 0.6mm, and the number is 5 pieces; the circumference of the fixing loop is 35mm (such as Figure 9 ). The total length of the prosthetic component prepared ...

Embodiment 3

[0054] The raw material of Example 1 is vacuum smelted in a vacuum smelting furnace to obtain a magnesium alloy with 0.29wt% Ca, 1.04wt% Zn and impurity content less than 0.01%. The obtained magnesium alloy is extruded into a Φ12mm rod after removing surface defects, and then swaged to obtain a Φ5.5mm rod. The measured mechanical properties of the magnesium-zinc-calcium bar material obtained in this embodiment are: yield strength ≥ 200 MPa, tensile strength ≥ 250 MPa, and elongation ≥ 25%. Its grain diameter is ≤10μm.

[0055] The swaged bar is ground and processed by the method in Example 1 to form a fixed piece and a flap, and then electropolished. Processing size: the size of the fixing piece is Φ5×4mm, the width of the beam of the fixing piece is 1.5mm; the widest part of the flap is 1.5mm, the length is 5mm, the thickness is 0.6mm, the shape is a long triangle, and the number is 6 pieces; the circumference of the fixing loop is 35mm ( Such as Figure 10 ). The total l...

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Abstract

The present invention provides a fixing device for ligament reconstruction and a use method thereof. The fixing device comprises a fixing member, lobes and a fixing loop, the lobes are movably coupledto the fixing member, and the fixing loop is located on the fixing member. The lobes of the fixing device for ligament reconstruction can be opened, and the contact area of the lobes with the femur after passing through the pre-drilling bone passage is greatly increased, so that the fixing effect is more stable, and the problem that the small bone plate falls after repair is effectively solved. The risk caused by foreign matter retention in the postoperative joint cavity is avoided, and the problem of internal fixation of secondary operation for removal is solved.

Description

technical field [0001] The present invention relates to the technical field of medical devices in living organisms, mainly relates to a device for fixing soft tissue to bone and a method of use thereof, more particularly, it relates to a fixing device for fixing an anterior cruciate ligament graft to a femur and its Instructions. Background technique [0002] The anterior cruciate ligament (ACL) is located in the knee joint and connects the femur to the tibia. Its main function is to limit the excessive forward displacement of the tibia. It works with other structures in the knee joint to maintain the stability of the knee joint. Because the ligament is mainly responsible for maintaining stability during flexion and extension movements and slight rotation movements, it is very important for human body movement and normal walking. ACL injuries often occur in various injuries, such as basketball, tennis, football, volleyball, skiing, grass skiing, taekwondo and other common s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/08
CPCA61F2/0811A61F2002/0829A61F2002/0858
Inventor 王颖王勇展京美益明星肖杰
Owner 西安卓恰新材料科技有限公司
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