Femoral head medulla core decompression drill bit

A technology of core decompression and femoral head, which is applied in the field of medical devices, can solve the problems of inconsistent curative effects and long-term curative effects that need to be further observed, and achieve the effects of increased bone graft volume, shortened operation time, and easy operation

Inactive Publication Date: 2012-09-26
刘新平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many literatures at home and abroad with different curative effects, most of which have positive curative effects, and long-term curative effects need to be further observed

Method used

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  • Femoral head medulla core decompression drill bit
  • Femoral head medulla core decompression drill bit
  • Femoral head medulla core decompression drill bit

Examples

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Embodiment

[0026] The present invention provides a femoral head core decompression drill, such as figure 1 As shown, it includes a drill bit and a fixed sleeve 2. The fixed sleeve 2 has a hollow inner cavity and two ends are respectively provided with openings 9, 10 communicating with it. The drill bit is eccentrically arranged on the fixed sleeve 2 and can be opposed to each other. When the fixed sleeve 2 rotates, the drill bit includes a knife handle and a knife edge 1, the knife handle is arranged in the inner cavity, the width of the knife edge 1 is not greater than the diameter of the cut surface of the fixed sleeve 2, and the knife edge It is arc-shaped, and its arc is 45 degrees, so that the cleaning range of the blade is similar to a circle. The outer surface of the fixed sleeve 2 is sleeved with an outer sleeve 3 and a limiting device, and the outer sleeve 3 can be relative to the fixed sleeve 2. When moving, the limiting device is located at an end away from the knife edge 1, a f...

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PUM

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Abstract

The invention provides a femoral head medulla core decompression drill bit, comprising a drill bit and a fixed sleeve. The fixed sleeve is provided with a hollow cavity and the two ends are respectively provided with an opening communicated with the fixed sleeve; the drill bit is eccentrically arranged on the fixed sleeve and capable of rotating relative to the fixed sleeve; the drill bit comprises a knife handle and a blade, wherein the knife handle is arranged in the cavity and the width of the blade is not greater than the diameter of the section of the fixed sleeve; an outer sleeve and a limiting device are sleeved on the outer surface of the fixed sleeve; the outer sleeve can move relative to the fixed sleeve; the limiting device is arranged at one end away from the blade; the fixed sleeve is provided with a fixed bolt for fixing the knife handle; and the outer surface of the outer sleeve is provided with a handle. Thus, the angle of the blade can be adjusted according to the requirement so as to enlarge the eliminating range, shorten the operation time, increase the bone grafting amount and decrease the operation wound; and besides, the operation is simple, convenient and safe.

Description

Technical field [0001] The invention belongs to the field of medical devices, and specifically relates to a femoral head core decompression drill. Background technique [0002] Avascular necrosis of the femoral head (ANFH) is a common and frequently-occurring disease in orthopedics. It occurs in young adults. The disease leads to the destruction of articular cartilage and the collapse of the femoral head, which ultimately leads to the loss of hip joint function. Femoral head necrosis caused by various reasons is the final pathological change of femoral head ischemia, so how to change the local blood supply of the femoral head, promote vascular regeneration and the formation of articular cartilage and bone tissue, preserve the autologous femoral head and prevent collapse Become the focus of treatment. Spinal cord decompression is effective in treating early avascular necrosis of the femoral head. In recent years, with the development of minimally invasive surgery technology, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16A61B17/56
Inventor 刘新平
Owner 刘新平
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