Universal joint prosthesis with cap
US4332036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1980 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Jun 6, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00407
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthesis for forming the spherical part of a hip joint with a calotte-shaped cap is disclosed. The inner surface of the prosthesis is provided with grooves and ribs which are evenly distributed over the circumference of the inner surface and extend along planes which, in turn, extend through the rotational symmetry axis of the outer cap surface. A sleeve having jacket is provided with holes is rigidly secured at the inner end of the inner cap surface on the cap and projects partly out of the latter. The ribbing of the inner cap surface and the sleeve permit the prosthesis to be firmly and durably secured in an operation on the bone without cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.