Hemispherical acetabulum
US4923473A · kind A · utility
32Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Feb 9, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2220/0033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The hemispherical acetabulum has a pin which projects from the cup of the acetabulum on an angle of 45.degree. relative to the polar axis. A sleeve which closes over the pin is rotatably mounted on the pin to facilitate twisting of the cup into a correct position when implanted in a pelvis. The sleeve is made of metal to preclude direct contact between the pin which may be made of plastic and the pelvis bone tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.