ACETABULAR PROTESIS CANCEL WITH REINFORCEMENT CONTRACT.

摘要

A CEMENTED ACETABULAR PROTESIS (10) INCLUDES A CUP BODY (10A) THAT HAS A RELATIVELY FINE WALL (FOR EXAMPLE, 2 MM.). THE BODY (10A) HAS A CONCAVA SURFACE (12B), A CONVEX SURFACE (12A) AND AN ANNULAR Flange (13). A PLASTIC COATING (11) IS COUPLED WITHIN A CONCAVITY (12B) OF THE CUP BODY (10A), THE COVERING (11) HAS A WALL WITH A THICKNESS GREATER THAN THE THICKNESS OF THE WALL OF THE CUP BODY AND A CONCAVA SURFACE AND A CONVEX SURFACE COINCIDING AND COUPLING THE CONCAVA SURFACE (12B) OF THE CUP BODY (10A). THE WALL OF THE CUP BODY SUPPLIES A SERIES OF OPENINGS (26, 27, 29, 30). SOME OF THE OPENINGS ARE OPENINGS FOR THE RECEPTION OF BONE SCREWS (B) THAT ARE REINFORCED WITH AN ANNULAR REINFORCEMENT (28) EXTENDING OUTSIDE THE CONVEX SURFACE (12A) OF THE CUP BODY (10A). OTHER OPENINGS ARE NON-REINFORCED OPENINGS (30) THAT ALLOW THE CEMENT (C) TO FLOW FROM THE CONVENT SIDE (12B) TO THE CONVEX SIDE (12A) OF THE PATIENT BODY (10A) AND INSIDE THE PATIENT ACETABULUM DURING SURGERY. THE BODY OF THE CUP (10A) HAS A PERIPHERAL REINFORCEMENT PART (22) TO SUPPORT A CEMENT VOLUME (C) OF THE CEMENT HAND IN THE PERIPHERAL POSITION OF INTERCONNECTION BETWEEN THE COATING (11) AND THE BODY (10A).