Patent ID: 8500744
Filing Date: 2013-08-06
Classification: A61F

Abstract:
1. A cap for use during the insertion of an acetabular cup prosthesis comprising: an impaction plate having an upperside and an underside, the impaction plate comprising a plurality of separate sectors mutually connected at a connection point on the impaction plate by flanges, each of the plurality of sectors having an outer edge, the plurality of sectors comprising at least a first sector and a second sector; and at least one lug extending away from the underside of each sector near the outer edge of each sector, said lug being located at the portion of the underside of the impaction plate which in use will enable the lug to be interconnected with a corresponding recess on an internal wall, an external wall or a rim of a prosthesis; wherein each of the plurality of sectors is movable between a first position, wherein each of the lugs is at least partially disposed within a corresponding recess and the distance measured between an outer edge of a first sector and an outer edge of a second sector is a known distance, and a second position, wherein the distance measured between an outer edge of a first sector and an outer edge of a second sector is less than the known distance; wherein the connection point at which the separate sectors are mutually connected is a central point of the impaction plate.