Patent ID: 9333083
Filing Date: 2016-05-10
CPC Classification: A61F

Claim Text:
1. An artificial hip joint composed of multilayer shell-core composite structural components, comprising: an artificial acetabulum and an artificial femoral ball head which are mutually matched with each other, where the artificial acetabulum has a multilayer shell-core composite structure, which comprises a ceramic acetabular liner, a transition layer and an acetabular shell which is adapted to contact with a human body; the artificial acetabulum is manufactured through sintering a green body of successively stacked layers of the ceramic acetabular liner, the transition layer and the acetabular shell, and the green body of successively stacked layers of the ceramic acetabular liner, the transition layer and the acetabular shell is obtained through a powder co-injection molding process; the acetabular shell is made of a porous toughened ceramic; the ceramic acetabular liner is made of ceramic material; and the transition layer of the artificial acetabulum is made of composite material comprising materials of the shell layer and the acetabular liner of the artificial acetabulum; where the artificial femoral ball head has a multilayer shell-core composite structure, which comprises a ceramic spherical shell layer, a transition layer and a toughened ceramic inner core; the artificial femoral ball head is manufactured through sintering a green body of successively stacked layers of the ceramic spherical shell layer, the transition layer and the toughened ceramic inner core, and the green body of successively stacked layers of the ceramic spherical shell layer, the transition layer and the toughened ceramic inner core is obtained through a powder co-injection molding process; the toughened ceramic inner core is made of toughened ceramic; the ceramic spherical shell layer is made of ceramic material; and the transition layer of the femoral ball head is made of composite materials comprising materials of the toughened ceramic inner core and the ceramic spherical shell layer of the femoral ball head.