Patent ID: 7294150
Filing Date: 2007-11-13
Classification: A61B,A61F

Abstract:
1. A liner for an acetabular cup of an artificial hip joint, the liner sealing a top bore formed in the acetabular cup, the liner comprising in combination: a concave inside surface adapted to contact a head of an artificial hip joint when said liner is within the acetabular cup; an outside surface adjacent the acetabular cup when said liner is within the acetabular cup; a rim extending between said inside surface and said outside surface at an opening into a region surrounded by said inside surface; a deforming seal coupled to said outside surface and configured to abut the acetabular cup adjacent the top bore the seal having an edge that flexes toward the outside surface of the liner when the seal is deformed; a means to press said liner against the acetabular cup with sufficient force to deform said deforming seal against the acetabular cup adjacent the top bore; wherein said means to press includes an annular seat adjacent said rim of said liner facing outwardly; and an annular ring sized to fit within both a groove of the acetabular cup and said seat of said liner with the groove and said seat located so that when said annular ring is located within the groove and said seat said deforming seal abuts the acetabular cup adjacent the top bore with said deforming seal being deformed.