Mineralized collagen-base supporting apparatus for femur head

Abstract

A femoral head support device, in particular a mineralized collagen-based femoral head support device applicable to the treatment of early osteonecrosis of femoral head. The device is made from a dense, homogeneous organic / inorganic composite, wherein the organic phase includes collagen and the inorganic phase includes nano calcium phosphate salt, and the device is of a cylinder having an upright through hole and also has a support strength of up to 4000-6000 N. By implementing a method for manufacturing such mineralized collagen-based femoral head support device, the mineralized collagen-based femoral head support device with mechanical properties equivalent to human cortical bone can be manufactured; and the mineralized collagen-based femoral head support device can meet the demand for the clinical treatment of early osteonecrosis of femoral head to avoid the continuous collapse of necrotic femoral head.

Description

technical field [0001] The invention belongs to the field of biomedical materials and relates to a femoral head support device, in particular to a mineralized collagen-based femoral head support device which can be used for treating early femoral head necrosis. technical background [0002] Necrosis of the femoral head is a common disease in orthopedics. There are currently many treatments to prevent the collapse of the femoral head. These treatments employ drilled holes and implanted supports to lift the collapsed femoral head from the inside out. Commonly used clinical supports include: metal support devices (such as memory titanium alloy mesh, tantalum rods, etc.), autologous cortical bone (such as autologous iliac crest), and allogeneic bone support devices. [0003] The memory titanium alloy mesh is difficult to control during the support process, which can easily lead to insufficient or excessive support; while metal supports such as tantalum rods are implanted into t...

AI Technical Summary

Problems solved by technology

In the actual production process, due to the limitation of the size of human bones, it is impossible to prepare allograft bone femoral head support devices with a length greater than 5cm, which greatly limits its clinical application

In addition, allogeneic bone also has limited sources, immunogenicity issues, and medical ethics issues.

[0006] To sum up, the existing treatment methods for femoral head collapse have their own defects, resulting in unsatisfactory treatment effects. Early femoral head necrosis often further develops into collapse, or the existing collapse is further aggravated, and finally hip replacement has to be performed surgery

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