A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 27/00 (2006.01) A61F 2/30 (2006.01) A61F 2/38 (2006.01) A61L 27/30 (2006.01) B32B 15/14 (2006.01) A61F 2/00 (2006.01)
Patent
CA 2051900
A femoral component of a knee prosthesis, including a cobalt-based alloy substrate and a titanium fiber metal pad bonded thereto by means of an interlayer of a cobalt-based alloy including nickel. More specifically, a method of bonding a titanium porous surface to a cobalt-based alloy in an orthopaedic implant device, by first applying an interlayer of a cobalt-based alloy including nickel to the substrate and then bonding a porous structure to the interlayer. In one embodiment, an interlayer of L-605 is first applied to a substrate of Co-Cr-Mo by diffusion bonding at approximately 2200° F. and then a fiber metal pad of CP-titanium is diffusion bonded to the interlayer at approximately 1650° F. A layer of CP-titanium may optionally be placed intermediate the fiber metal pad and interlayer before the second diffusion step. In an alternative embodiment, MP-35N alloy may be substituted for the L-605 alloy.
Heldreth Mark A.
Parr Jack E.
Shetty H. Ravindranath
Bristol-Myers Squibb Company
Gowling Lafleur Henderson Llp
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