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US 8,357,205 B2Granted
Femoral head and method of manufacture thereof
OwnerMohamed Naushad Rahaman, Bhajanjit Singh Bal +1inventors
InventorsMohamed Naushad Rahaman, Bhajanjit Singh Bal, Yadong Li
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Abstract
A femoral head made from a ceramic-metal composite having a multi-layered construction and related method of manufacture is disclosed. The femoral head includes an inner metal core bonded to a relatively thin ceramic outer layer that is used as the articulating surface with an acetabular cup during total hip arthoplasty. In another embodiment, an interface layer having a ceramic and metal mixture may be laminated between the inner metal core and the exterior ceramic layer.
Claims3
An orthopedic implant component comprising:
- a support member comprising a homogeneous metallic species composition;
- an interface layer bonded to the support member, the interface layer comprising:
- a first sub-layer comprising between about 5% and about 95% of a ceramic material and between about 95% and about 5% of a metal material by volume;
- a second sub-layer comprising between about 5% and about 95% of a ceramic material and between about 95% and about 5% of a metal material by volume;
- and
- a third sub-layer comprising between about 5% and about 95% of a ceramic material and between about 95% and about 5% of a metal material by volume;
- and,
- an outermost surface layer of a ceramic composition bonded to the interface layer opposite the support member, the ceramic composition comprised of a ceramic material and a metallic species, whereby the thickness of the ceramic composition layer ranges between about 200 microns and about 10 mm.
5 more elements
Dependencies are inferred from the claim text.