Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Reexamination Certificate
2006-05-23
2006-05-23
Barrett, Thomas C. (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
C623S023530, C427S002240
Reexamination Certificate
active
07048767
ABSTRACT:
The present invention provides orthopedic prosthesis having at least one metallic component that includes a metallic substrate on which an integrally formed nano-crystalline coating is formed. The coating and the substrate have at least one metallic constituent in common having an average atomic concentration in the coating that differs from an average atomic concentration in the substrate by less than about 10 percent. Further, the nano-crystalline coatings includes crystalline grains with an average size in a range of about 1 to 999 nanometers, and more preferably in a range of about 10 to 200 nanometers. A transition region that exhibits a graded reduction in average grain size separates the coating from the substrate. The coating advantageously exhibits an enhanced hardness, and a high degree of resistance to corrosion and wear. In one application, the nano-crystalline coatings of the invention are utilized to form articulating surfaces of various orthopedic devices.
REFERENCES:
patent: 5004476 (1991-04-01), Cook
patent: 5180394 (1993-01-01), Davidson
patent: 5236509 (1993-08-01), Sioshansi et al.
patent: 5370694 (1994-12-01), Davidson
patent: 5489306 (1996-02-01), Gorski
patent: 5702448 (1997-12-01), Buechel et al.
patent: 5861042 (1999-01-01), Buechel et al.
patent: 5865850 (1999-02-01), Matthews
patent: 5955145 (1999-09-01), Kalvala et al.
patent: 5981827 (1999-11-01), Devlin et al.
patent: 6051751 (2000-04-01), Sioshansi et al.
patent: 2002/0042656 (2002-04-01), Hunter et al.
patent: 0 461 032 (1991-12-01), None
patent: 2 789 315 (2000-08-01), None
Savader, et al. “Nanoidentation Study of Sputtered Nanocrystalline Iron Thin Films”Scripta Materialia, vol. 36, No. 1, pp. 29-34 (1997).
Lavemia, et al. “The Corrosion Properties of Nanocrystalline CO-CR Coatings” 48thAnnual Meeting of the Orthopaedic Research Society, paper No. 0162.
Lau, et al., “Synthesis and Characterization of Nanocrystalline Co-CR Coatings by Plasma Spraying” Nanostructured Materials, Elsevier, New York, NY, US (Jul. 1998).
Barrett Thomas C.
Engellenner Thomas J.
Mollaaghababa Reza
Nutter & McClennen & Fish LLP
Spire Corporation
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