Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...
Patent
1993-07-26
1994-12-20
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Combined manufacture including applying or shaping of fluent...
427422, 428613, 623 16, 623 23, B23P 1700
Patent
active
053736214
ABSTRACT:
Orthopaedic implants exhibiting improved fatigue strength are disclosed. By forming a plurality of nodules on the surface of an implant and depositing a porous coating onto the surface of these nodules, the fatigue strength of implants such as those made from .alpha.+.beta. titanium alloys, e.g., Ti-6Al-4V alloy is substantially improved. The present invention provides a novel geometry which substantially reduces the stress concentration factor created by the interfacial geometry of conventional porous coatings. Methods of manufacturing porous coated orthopaedic implants are also disclosed.
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Ducheyne Paul
Wolfarth Debra
Arbes Carl J.
The Trustees of the University of Pennsylvania
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