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Hip joint prosthesis

A hip joint prosthesis and prosthesis technology, applied in the field of hip joint prosthesis, can solve the problems of reliable restraint of the ball head, complicated installation, complex structure, etc.

Pending Publication Date: 2021-02-05
BEIJING MONTAGNE MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many solutions in the prior art to solve the problem of joint dislocation, but these existing technologies either cannot achieve reliable restraint of the ball head, or cannot achieve a large area of ​​contact between the ball head and the acetabular lining (for example, more than a hemisphere) , or involve more anti-detachment structural components, resulting in complex structure, complicated installation, expensive price, prolonged operation time and many other problems

Method used

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Embodiment Construction

[0028] Further features and advantages of the invention will become more apparent from the following description made with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings, and the individual drawings are not necessarily drawn to scale. This invention may, however, be embodied in many different forms and should not be construed as necessarily limited to the exemplary embodiments disclosed herein. Rather, these exemplary embodiments are provided merely to illustrate the present invention and to convey the spirit and substance of the present invention to those skilled in the art.

[0029] The hip prosthesis according to the present invention aims to provide an acetabular liner capable of receiving and constraining the femoral head prosthesis of the femoral prosthesis to prevent it from dislodging from the acetabular liner. In general, a hip prosthesis according to one embodiment of the present invention includes an...

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Abstract

The invention proposes a hip joint prosthesis. The hip joint prosthesis comprises an acetabular liner and a femoral head prosthesis, wherein the acetabular liner is provided with an inner wall defining a cavity and an opening and a protruding block protruding from the inner wall, the protruding block is provided with a side surface extending from the opening towards the cavity, and the inner wallcomprises a spherical wall in a spherical shape; and the femoral head prosthesis is provided with a spherical shape corresponding to the spherical wall and provided with a cooperating surface, the side surface extends obliquely with respect to the opening and is configured to cooperate with the cooperating surface, so that the femoral head prosthesis is only allowed to enter and exit the cavity ina direction oblique with respect to the opening.

Description

technical field [0001] The invention relates to the medical field of orthopedics, more specifically, to a hip joint prosthesis for hip joint replacement surgery. Background technique [0002] As an effective method for the treatment of severe hip joint diseases, total hip arthroplasty has been increasingly applied in clinical treatment. It can reconstruct joints, relieve pain, correct deformity, stabilize and improve joint function. The dislocation of the ball head detached from the acetabulum is one of the common complications after hip replacement. According to various statistics and reports at home and abroad, the incidence rate is <0.1-10%, and there is even an incidence rate of dislocation after revision As high as 25% of the records, joint dislocation will cause sciatic nerve injury, difficulty in reduction, or even dislocation after reduction, which will bring great pain to the patient. There are many reasons for joint dislocation: such as the patient is too thin ...

Claims

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Application Information

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IPC IPC(8): A61F2/36A61F2/34
CPCA61F2/34A61F2/3609A61F2002/3443A61F2002/3611
Inventor 张文彪张松李子欣许志勇
Owner BEIJING MONTAGNE MEDICAL DEVICE
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