Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene
AssigneeSmith & Nephew, Inc.
InventorsDavid L. Evans, Gordon Hunter, Shilesh C. Jani, Robert E. Brosnahan, III
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Abstract
Orthopedic implants which include the components of zirconium or zirconium-based alloys having surfaces coated with oxidized zirconium or alternatively, other orthopedic implants comprising abrasion resistant surfaces contacting surfaces of cross-linked polyethylene are disclosed. Such implants provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc., but also useful in other implant devices as well. The implants also find use as vertebral disc prostheses.
Claims9
A vertebral disc prosthesis for implantation in a patient, said prosthesis comprising
- at least one surface of cross-linked polyethylene;
- and,
- at least one component formed of zirconium or zirconium alloy and having at least one surface of diffusion-bonded blue-black or black oxidized zirconium,
- wherein said at least one surface of cross-linked polyethylene articulates against said at least one surface of diffusion-bonded blue-black or black oxidized zirconium.
Dependencies are inferred from the claim text.