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US 7,682,399 B2Granted
Acetabular shell
AssigneeHowmedica Osteonics Corp.
InventorsWilliam Hale Shields, Viktor Erik Krebs
Life of this patent
Estimating the term…
Abstract
An acetabular cup assembly for a prosthetic hip joint is disclosed. This assembly includes an outer shell having at least one shell extension, an adaptor having at least one adaptor extension, and an insert. The inclusion of an extension on the outer shell and an extension on the adaptor allows for easier manipulation and implantation of the assembly.
Claims16
An acetabular cup assembly for a prosthetic hip joint comprising:
- an outer shell for attachment to the acetabulum, the outer shell having an inner surface, an outer periphery, and at least one radially extending shell extension with first and second shell extension apertures, the shell extension apertures designed to receive first fasteners for fixing the outer shell to bone;
- a bearing insert;
- and
- an adaptor having an outer surface for engaging the inner surface of the outer shell, an inner surface for receiving the bearing insert, and at least one radially extending adaptor extension with first and second adaptor extension apertures, the adaptor extension apertures extending beyond the outer periphery of the outer shell and designed to receive second fasteners for fixing the adaptor to bone, wherein the first adaptor extension aperture extends radially further than the second adaptor extension aperture.
1 more element
A kit for resurfacing an acetabulum comprising:
- at least one outer shell for attachment to the acetabulum, the outer shell having an inner surface, an outer periphery, and at least one radially extending shell extension with first and second shell extension apertures, the shell extension apertures designed to receive first fasteners for fixing the outer shell to bone;
- at least one bearing insert;
- and
- a plurality of adaptors each having an outer surface for engaging at least a portion of the inner surface of the outer shell, an inner surface for receiving the bearing insert and at least one radially extending adaptor extension with first and second adaptor extension apertures, the adaptor extension apertures extending beyond the outer periphery of the outer shell and designed to receive second fasteners for fixing the adaptor to bone, wherein the first adaptor extension aperture extends radially further than the second adaptor extension aperture.
1 more element
Dependencies are inferred from the claim text.