Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Specific material for heart valve
Reexamination Certificate
1999-12-13
2009-12-15
Stewart, Alvin J (Department: 3774)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Specific material for heart valve
Reexamination Certificate
active
07632309
ABSTRACT:
Medical devices can be formed from improved composite materials that include a composition that has at least about 50 percent by volume pyrolytic carbon and a second composition having at least about 50 percent by volume metal/metalloid carbide. The composite material can optionally include a substrate. Some embodiments of the composite material have the pyrolytic carbon material at exposed surfaces.
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Cyclic fatigue-crack propagation, stress-corrosion, and fracture-toughness behavior in pyrolytic carbon-coated graphite for prosthetic heart valve applications. J. of Biomedical Materials Research, vol. 24, 189-206 (1990).
Brendzel Avrom M.
Rodriguez Richard
Toy Michelle Lund
Finucane Hallie A.
St. Jude Medical Inc.
Stewart Alvin J
Westman Champlin & Kelly P.A.
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