Patent ID: 7585329

Claim:
A femoral hip implant kit comprising: at least one distal implant; a plurality of femoral heads, each of the plurality of femoral heads having a diameter different from the diameter of the other of the plurality of femoral heads; a proximal trial housing defining a first opening, a second opening, and a bore extending therebetween, the bore (i) defining an axis, (ii) defining a bore wall interposed between the first opening and the second opening, and (iii) configured to receive a portion of the at least one distal implant through the first opening; a collet positioned within the bore, the collet including an outer wall portion, an upper portion and a bottom portion; and a collapsing member configured to (i) engage the portion of the distal implant, and (ii) move in relation to said collet within said bore along the axis, wherein movement of the collapsing member in relation to the collet within the bore along the axis when movement of the bottom portion along the axis is constrained causes movement of the upper portion of the collet towards the bottom portion of the collet along the axis, wherein movement of the upper portion of the collet towards the bottom portion of the collet along the axis causes movement of the outer wall portion of the collet in a direction generally perpendicular to the axis so as to force the outer wall portion into contact with the bore wall, and wherein the collapsing member comprises: (i) a main body portion configured to fit within the bore; (ii) a threaded internal bore within the main body for threadingly receiving the portion of the distal implant; and (iii) a head portion for receiving torque.