Method of manufacturing surgical implants from cast stainless steel and product
US4775426A · kind A · utility
24Cited by
12References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1986 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Apr 3, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49988
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A surgical implant is disclosed manufactured from cast austenitic stainless steel and cold-forged to a final shape. The endoprosthesis is initially a preform which is cast oversized in shape and dimensions. It is then compressed using the cold-forging process to its final size and shape. Using a cast material as a starting material and then compressing it substantially reduces the porosity of the material and increases its strength compared to a machined product from a wrought material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.