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Femoral head prosthesis, femoral prosthesis assembly and hip joint assembly

A technology of femoral head and hip joint prosthesis, applied in the direction of hip joint, femoral head, prosthesis, etc., can solve the problems of femoral head dislocation, achieve large flexion angle, reduce the risk of prolapse, and avoid the effect of secondary injury

Pending Publication Date: 2019-10-25
BEIJING AKEC MEDICAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to provide a femoral head prosthesis, a femoral prosthesis component and a hip joint component to solve the problem in the prior art that the femoral head is small in size and easily leads to femoral head dislocation

Method used

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  • Femoral head prosthesis, femoral prosthesis assembly and hip joint assembly
  • Femoral head prosthesis, femoral prosthesis assembly and hip joint assembly
  • Femoral head prosthesis, femoral prosthesis assembly and hip joint assembly

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] Such as figure 1 As shown, the femoral head prosthesis of this embodiment includes a ball head 10, a porous structure layer 20 and a polymer layer 30, wherein the porous structure layer 20 is wrapped on the outer surface of the ball head 10, and the polymer layer 30 is wrapped on the porous structure on the outer surface of layer 20. The polymer layer 30 can be molded on the surface of the porous structure layer 20 by means of thermoplastic, injection molding, etc., using a polymer material with excellent wear resistance (such as polyurethane, polyvinyl alcohol gel, polylactic acid, etc.).

[0024] Applying the technical solution of this embodiment, the polymer has hardness and elastic...

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Abstract

The invention provides a femoral head prosthesis, a femoral prosthesis assembly and a hip joint assembly. The femoral head prosthesis comprises a bulb, a porous structural layer wrapping the outer surface of the bulb, and a polymer layer wrapping the outer surface of the porous structural layer. By means of the technical scheme, the problem that a femoral head is small in size and prone to dislocation in the prior art is effectively solved.

Description

technical field [0001] The invention relates to the field of artificial prosthesis implants, in particular to a femoral head prosthesis, a femoral prosthesis component and a hip joint component. Background technique [0002] At present, there are several types of artificial hip joint materials used clinically: 1. Metal femoral ball head and metal backing pair, the friction pair formed by this pairing will have toxic metal ions precipitated during the long-term friction and wear process, Accumulation to a certain concentration in the human body will lead to chronic lesions, and at the same time, wear debris will induce osteolysis of the bone tissue around the prosthesis; 2. The metal or ceramic femoral ball head is paired with the polymer backing. The wear rate of the polymer lining is very high. The most commonly used polymer material is ultra-high molecular weight polyethylene. During the long-term friction process, it will cause wear of the polymer material, and the wear p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/30A61F2/34
CPCA61F2/3609A61F2/3662A61F2/34A61F2/30771A61F2/30942A61F2002/3611A61F2002/30329A61F2002/30784
Inventor 王彩梅周一新靳忠民
Owner BEIJING AKEC MEDICAL
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