Patent ID: 7473279
Filing Date: 2009-01-06
Classification: A61L,C08L

Abstract:
1. An orthopaedic implant comprising: at least one first element of an orthopaedic implant and a second element of an orthopaedic implant, wherein the first element is provided in a pre-determined relative position to the second element, in particular at least partly in a recess of the second element, and the first element has a pre-positioning location with respect to the second element having play, in which the first element is constrained from removal with respect to the second element, and the first element can be displaced from the pre-positioning location into an end positioning location corresponding to a fixed assembly of both elements in which the first element has no play with respect to the second element; wherein the second element is an inner shell of a joint prosthesis and the first element is a cover plate of the inner shell; the recess is provided in the outer wall of the inner shell with a circular cross-section, the inner shell comprising a side wall and a base, the base becoming deeper towards the centre of the recess, wherein the side wall has at least one projection directed to the centre of the recess, the cover plate is loosely held by the side wall and by the projection in the pre-positioning location; the cover plate has at least one cam which engages, in the end positioning location, into the side wall of the recess; and the cover plate can be displaced in the recess from the pre-positioning location into the end positioning location by a rotational movement, the base of the inner shell being accessible to a sterilization gas when the cover plate is in the pre-positioning location.