Method of surface finishing orthopedic implant devices
US5057108A · kind A · utility
102Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jan 12, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/30906
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surface treatment process for stainless steel orthopedic implant devices and an orthopedic implant device surface treated in accordance with the disclosed process are disclosed. A rough ground or machined stainless steel part is shot blasted with stainless steel shot. The device is then shot blasted with glass beads having a nominal size of between one-tenth and one-half that of the stainless steel shot. Electropolishing and passivation follow the shot blasting steps. A part thus treated includes a heavily cold-worked outer layer that enhances the fatigue properties of the stainless steel orthopedic implant device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.