Abstract: A device for separating a hard acetabular liner (e.g., metal, ceramic, etc.) positioned in an acetabular shell, the device including an elongated member having a proximal and distal end, an engagement structure positioned at the proximal end of the elongated member. The engagement structure includes a first portion having a curved outer surface, a first end-face aligned substantially perpendicular to the longitudinal axis of the device, and an inner surface extending from the first end-face, the first portion structured to fit at least partially into a scallop-shaped recess on a peripheral top surface of the acetabular shell, and further includes a second portion separated from the first portion by an opening, structured to accept the top surface of the acetabular liner, and including an outer surface extending a second length from the proximal end of the elongated member, structured to contact the top surface of the acetabular shell.

Abstract: An implant assembly device configured to press an inner femoral head into a plastic outer femoral head by means of actuator system. The actuator system embodies a unique pawl system that acts to reduce the occurrence and severity of device jamming due to over compression. The device includes a unique head support apparatus that aligns and orients the inner and outer femoral heads prior to and throughout the assembly process. The device can also include a grip portion integrated onto the body of the device, for holding and stabilizing the device when in use.

Abstract: An implant assembly device configured to press an inner femoral head into a plastic outer femoral head by means of actuator system. The actuator system embodies a unique pawl system that acts to reduce the occurrence and severity of device jamming due to over compression. The device includes a unique head support apparatus that aligns and orients the inner and outer femoral heads prior to and throughout the assembly process. The device can also include a grip portion integrated onto the body of the device, for holding and stabilizing the device when in use.

Abstract: An implant trial head includes a distal end, a proximal end including an opening in an exterior surface, and a cavity extending from the opening into the implant trial head. The cavity includes an asymmetric groove in an interior wall of the cavity, the groove aligned substantially perpendicular to a longitudinal axis of the implant trial head, and a cross-sectional diameter of the asymmetric groove. The implant trial head includes an O-ring positioned in the asymmetric groove.