Prosthetic joint assembly and prosthetic joint member
AssigneeBiomedflex, LLC
InventorsFranz W. Kellar, Harold Lloyd Crowder, Jr., Scott M. Duquette
Life of this patent
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Abstract
A prosthetic joint member includes: a generally concave cup with an outer surface that is bone-implantable, the cup including a first indexing feature; a concave insert disposed inside the cup, the insert comprising a rigid material and including a concave interior defining a nominal surface, the interior including a cantilevered flange defined by an undercut in the insert, the flange defining a wear-resistant first contact surface which protrudes inward relative to the nominal surface, the insert including a second indexing feature. The first and second indexing features engage each other so as to retain the insert in a fixed angular orientation relative to the cup.
Claims18
A prosthetic joint member comprising:
- a concave cup with an outer surface that is bone-implantable, the cup including a first indexing feature;
- a concave insert disposed inside the cup, the insert comprising a rigid material and including a concave interior defining a nominal surface, the interior including a cantilevered flange defined by an undercut in the rigid material, the flange defining a wear-resistant first contact surface which protrudes inward relative to the nominal surface and into the concave interior, the insert including a second indexing feature;
- and
- wherein the first and second indexing features engage each other so as to retain the insert in a fixed angular orientation relative to the cup.
Dependencies are inferred from the claim text.