Osteonics Corp.

Howmedica Osteonics Corporation

Alfred J. Zarnowski

Christopher G. Sidebotham

Matthew V. Lyons

Harry E., III Figgie

Alfred J Zarnowski

Aiguo Wang

Aaron Essner

Matthew V Lyons

Robert C Cohen

Robert G Averill

Harry E Figgie, Iii

Christopher G Sidebotham

Iii Figgie Harry E

An improved prosthetic medical device having improved wear resistance and toughness is provided in the present application. A method is provided to selectively cross-link the polymeric matrix comprising the medical device by employing an interrupting means such as a mask, wire mesh or chopper wheel placed in between the medical device and irradiation source. In addition, the medical device may be translated while being irradiated to further effect the selective cross-linking. The present invention also provides for an injection molding process wherein a prosthetic medical device is formed in a single step, then selectively cross-linked.

Methods for preparing selectively cross-linked polyethylene orthopedic devices

Process for preparing selectively cross-linked polyethylene orthopedic devices

A cement spacer system for interoperatively converting an acetabular cup component of the type constructed for cementless affixation to a construction suitable for cemented affixation includes a plurality of cement spacers associated with a spacer inserter for selectively inserting the cement spacers into the wall of the acetabular cup component, during the implant procedure, to provide the acetabular cup component with cement spacers suitable for cemented affixation of the acetabular cup component.

Acetabular cup component cement spacer system

A femoral stem surgical instrument system includes a handle component and an impact component, either one of which is selectively coupled with a femoral stem through a recess in the femoral stem, the recess providing separate facilities for the appropriate coupling of either of the components with the femoral stem, with each of the separate facilities being protected against damage when the other of the facilities is in use.

Femoral stem surgical instrument system

An acetabular cup has a shell component with an outer surface including a first spherical surface portion and a second spherical surface portion, and an acetabulum is prepared with an inner surface having a spherical configuration complementary to the second spherical surface portion of the shell component, the radius of the first spherical surface portion being slightly greater than the radius of the second spherical surface portion such that upon nesting of the second spherical surface portion of the shell component in contiguous relationship with the inner surface of the acetabulum, the first spherical surface portion engages the inner surface of the acetabulum in an interference fit to secure the shell component within the prepared acetabulum.

Dual-radius acetabular cup component

A cutting guide for guiding a saw blade during the preparation of a femur for the implant of the femoral component of a knee prothesis includes guide surfaces for enabling the cutting of all four of the anterior femoral cut, the posterior femoral cut, the anterior chamfer and the posterior chamfer, fully and completely, with certitude and accuracy, while the cutting guide remains located and secured to the femur in a single position on a transverse surface located along the distal femur.

Femoral cutting guide

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North Plainfield, NJ, United States of America

Alfred J Zarnowski