Zirconium oxide and nitride coated endoprostheses for tissue protection
US5370694A · kind A · utility
95Cited by
31References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00892
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Medical implants of zirconium or zirconium-based alloy coated with blue or blue-black zirconium oxide or zirconium nitride to provide low friction, highly wear resistant coatings especially useful in hemiarthroplasty applications such as unipolar artificial joints, including unipolar hip joints or surface replacements, knee joints, shoulder joints, elbows, spinal segments, fingers, etc. The zirconium oxide or nitride coated prostheses also provide a barrier against implant corrosion caused by galvanic coupling with other metal components or in vivo ionization of the metal prosthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.