Patent ID: 8894660

Claim:
A prosthetic acetabular cup inserter and impactor comprising a body, an expandable part-spherical cup engaging means disposed at a first end of said body and adapted to engage an inner surface of a cup with which it is used when expanded, and operating means adapted to axially rotate said cup engaging means in relation to said body in use, in which an impaction plate adapted to engage a rim of said cup is disposed between said body and said cup engaging means, and in which said impaction plate is connected to said operating means by linkage means which act to axially rotate said impaction plate in unison with said cup engaging means in use; the operating means including an axially extending rod mounted within the cup engaging means moveable in an axial direction by the linkage means to expand the expandable cup engaging means; and a release element slidably mounted on the expandable cup engaging means moveable in a direction transverse to the axis of the rod for connecting the cup engaging means to the rod in a first position of the release element and releasing the cup engaging element from the rod in a second position.