Hollow titanium bar provided with fixing device and used for supporting femoral head and preventing femoral head from collapse

Abstract

The invention discloses a hollow titanium bar provided with a fixing device and used for supporting the femoral head and preventing the femoral head from collapse. The hollow titanium bar comprises abar body and the fixing device, wherein the bar body is integrally formed and is an octagonal prism; a hydroxyapatite coating is formed on the outer surface of the bar body; a through hole is formed in the axial direction of the bar body; coarse threads are arranged at the tail part of the bar body; an inner hexagonal notch is formed in the tail end of the bar body and communicated with the through hole; the fixing device is connected with the tail end of the bar body. The titanium bar for supporting the femoral head is implanted into the collapse position of the femoral head and plays a roleof mechanical support, thereby improving biomechanical characteristics of the femoral head and the neck and preventing the femoral head from collapse; the titanium bar for supporting the femoral headis of a hollow structure and can play a role of reducing pressure of the femoral head for a long time, the hydroxyapatite coating on the outer surface of the titanium bar body is good in compatibilitywith human tissue, and the fixing device is arranged at the tail end of the titanium bar, so that the titanium bar is effectively prevented from loosening and slipping.

Description

technical field [0001] The invention belongs to the technical field of medical materials for orthopedics in clinical medicine, and relates to a hollow titanium rod with a fixing device for supporting a femoral head and preventing collapse. Background technique [0002] At present, the methods reached at home and abroad for the early treatment of femoral head necrosis are bone defects left after heart medullary decompression and the weak area of ​​the femoral neck, which will lead to weak support structures in the femoral head, which cannot be prevented or corrected. The collapse of the femoral head will accelerate the collapse of the femoral head. In addition, if the femoral head is fixed and supported, the fixation will gradually come out after necessary activities, resulting in failure of the treatment. So how to effectively avoid or prevent the femoral head from collapsing and Long-term support of the femoral head has become a difficult problem in today's medicine. Cont...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hollow titanium rod with a fixation device to support the femoral head to prevent collapse, which solves the problem that the femoral head cannot be effectively avoided or prevented from collapsing in the prior art

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