Prosthesis with highly convoluted surface
US5368881A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Jun 10, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00592
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A technique for producing a highly convoluted surface on a prosthetic device is achieved by applying a layer of aspherical metallic powder on the surface of the device. The metallic powder, which may be the same as or different from the material of the device, is applied in a thickness of up to approximately 200 microns and has a size range of approximately -80 to +635 mesh so as to result in a surface roughness defined by a peak to valley variation of up to approximately 200 microns. A resulting device has an enhanced surface which provides, alternatively, an improved press fit into a receiving bone, or improved cement fixation, or improved reception of a ceramic coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.