Prosthetic devices having sintered thermoplastic coatings with a porosity gradient
US4351069A · kind A · utility
335Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1979 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Dec 13, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00029
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Coated Prosthetic devices useful in the medical and dental fields, such as dental implants, intramedullary nails, and total hip prostheses, are provided having a porosity or density gradient in the sintered plastic coating. The higher porosity is at the outer surface which facilitates bone ingrowth while the lesser porosity which has a higher density and a more continuous plastic layer is on the inner surface and thus provides better adhesion to the load bearing component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.