Artificial hip joint acetabulum outside liner

Abstract

The invention relates to an artificial hip joint acetabulum outside liner, which comprises a liner body and an inner three-dimensional net body integrally formed with the inner surface of the liner body, wherein the surface of the inner three-dimensional net body is provided with a plurality of inner holes from the outside to the inside, and the inside of the inner three-dimensional net body is provided with a communication part or a transverse pore canal of all inner holes. In surgery, bone cement is filled in the inner surface of the acetabulum outside liner. The liquid bone cement permeates and fills the inner holes and the transverse pore canal of the inner three-dimensional net body of the acetabulum outside liner, an acetabulum inside liner is placed in and bonded with the acetabulum outside liner before the curing of the bone cement, and the inner three-dimensional net body, the acetabulum inside liner and the bone cement are bonded firmly into a whole after the bone cement cures completely, thereby effectively preventing forward looseness from occurring between the acetabulum outside liner and the acetabulum inside liner.

Description

technical field [0001] The invention relates to an artificial hip joint acetabular outer lining. Background technique [0002] Artificial hip replacement surgery has become a relatively common surgical operation in the medical field. Usually, an acetabular lining made of ultra-high molecular polyethylene needs to be installed inside the acetabular lining of the artificial hip joint. The cooperation between the outer lining and the acetabular lining is generally in the form of mechanical assembly, such as snap ring retaining ring type, shape embedded, etc., but there is still a small gap between the acetabular outer lining and the acetabular lining in these forms, During use, there will be fretting and tiny debris, and the osteolysin produced after these particles are phagocytized by macrophages will eventually lead to bone dissolution around the prosthesis, which will bring hidden dangers to the loosening of the prosthesis in the future; in addition, The part where the insi...

AI Technical Summary

Problems solved by technology

[0002] Artificial hip replacement surgery has become a relatively common surgical operation in the medical field. Usually, an acetabular lining made of ultra-high molecular polyethylene needs to be installed inside the acetabular lining of the artificial hip joint. The cooperation between the outer lining and the acetabular lining is generally in the form of mechanical assembly, such as snap ring retaining ring type, shape embedded, etc., but there is still a small gap between the acetabular outer lining and the acetabular lining in these forms, During use, there will be fretting and tiny debris, and the osteolysin produced after these particles are phagocytized by macrophages will eventually lead to bone dissolution around the prosthesis, which will bring hidden dangers to the loosening of the prosthesis in the future; in addition, The part where the inside of the acetabular outer lining and the inner lining are combined is generally processed by turning and milling. In this way, it is quite troublesome to turn and mill the inner part of the acetabular outer lining with fixed wings. The main difficulty lies in the clamping and positioning

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