CVD Zirconia Coating on CO-CR Orthopedic Implants

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 21947
Amount: $749,992.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Spire Corp.
One Patriots Park, Bedford, MA, 01730
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Anton C. Greenwald
 (617) 275-6000
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Long-term performance of orthopaedic joint prostheses is now limited by wear. Surface coatings have been shown to be effective in reducing this wear, but each metal alloy system requires a different treatment. Spire's ion implantation process has been used effectively to reduce titanium wear through direct treatment of titanium surfaces and to reduce UHMWPE wear through treatment of mating Co-Cr surfaces. This proposal strives to continue Spire's leadership in this field by combining the beneficial properties of the metal with the desired wear properties of a ceramic. Hardened ceramic coatings will reduce wear and will have immediate commercial impact with significant benefits to younger patients who would have to use these devices for extended periods. Zirconia is a biocompatible, hard ceramic with good wear and lubricity. It can be uniformly applied on intricate surfaces by chemical vapor deposition (CVD) at low temperatures. We will test this coating on cobalt-chromium coupons for wear reduction of UHMWPE mating pieces. Coating uniformity, adhesion, and other relevant physical properties will be determined. Success in Phase I will lead to tests on actual hip components in Phase II.

* information listed above is at the time of submission.

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