Patent ID: 8430886
Filing Date: 2013-04-30
Classification: A61F

Abstract:
1. An inserter for locating and impacting an acetabular cup which has an inner bearing surface in a prepared acetabulum, comprising a handle carrying an anvil, an impaction head adapted to receive said cup and a retention means for attaching said cup to the inserter, said retention means extending between an actuating means in the handle and the impaction head, said actuating means is operable to free the retention means from the cup by impacting the anvil, wherein the acetabular cup has an opening in its inner bearing surface, at least part of the opening extends adjacent to a substantially central part of the cup, said actuating means having a first position in which the retention means extends into the opening in the inner bearing surface and engages the cup to hold it in position on the impaction head, said actuating means having a second position in which said retention means is freed from the cup by impacting the anvil, wherein the opening in said inner bearing surface extends through a wall of the cup to its outer surface to provide an outer rim, wherein said actuating means can also be operated to free the retaining means independently from said anvil, wherein said retention means include a retainer, and wherein in the first position the retainer is raised and engages the outer rim of the opening in the cup and in the second position the retainer is rotated out of contact with the rim and simultaneously lowered within the opening in the cup.