Claims
- 1. A process for producing a calcium phosphate coated implantable device, comprising subjecting a porous or non-porous material to a surface treatment until a roughened surface with an average peak distance between about 10 nm and about 1,000 nm is obtained and in vitro coating the surface with a layer of a calcium phosphate.
- 2. The process according to claim 1, wherein said surface treatment comprises a mechanical abrading treatment.
- 3. The process according to claim 1, wherein said surface treatment comprises a chemical treatment including subjecting the surface to acidic, alkaline or oxidizing solutions or a combination of an acidic solution or an alkaline solution and an oxidizing solution.
- 4. The process according to claim 1, wherein the roughened surface is subsequently subjected to precipitation of calcium phosphate from a solution containing calcium and phosphate ions.
- 5. The process according to claim 4, wherein said solution has a pH of about 4-10.
- 6. A process according to claim 1 comprising treating titanium or a titanium alloy with an acid solution followed immersion in an alkaline solution.
- 7. A process according to claim 1 comprising treating porous tantalum with an acid solution followed by immersion in an oxidizing solution.
- 8. A process according to claim 5 wherein the pH is about 6 to about 8.
Priority Claims (1)
Number |
Date |
Country |
Kind |
96201293 |
May 1996 |
EPX |
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Parent Case Info
This application is a divisional of U.S. patent application Ser. No. 08/855,835, filed May 12, 1997.
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Divisions (1)
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Number |
Date |
Country |
Parent |
855835 |
May 1997 |
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