Osteointegrative interface for implantable prostheses and a method for the treatment of the osteointegrative interface
US7740481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Aug 30, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/26
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An interface including a substrate of biocompatible material such as titanium, tantalum or their alloys having, on the surface of the substrate, a first layer having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium, the ratio between the concentration of calcium and the concentration of phosphorus being greater than two. The interface also includes a second layer having a first surface in contact with the first layer and a second surface. The second layer has a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus. The fourth concentration is less than the fifth and sixth concentrations and the ratio between the fifth concentration of calcium and the sixth concentration of phosphorus is no less than three.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.