Thumb joint prosthesis
US4955916A · kind A · utility
194Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | May 1, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved carpal-metacarpal thumb joint prosthesis comprising carpal and metacarpal components which are tapered and threaded to facilitate fixation and to promote bone ingrowth together with a recess formed in the carpal component for holding a mesh disc to further enhance bone in-growth and having the carpal component formed generally U-shaped cavity containing an insert formed of ultrahigh molecular weight polyethylene which receives the spherical end of a tapered head which is securely received in a corresponding cavity within the metacarpal component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.