Prosthetic arrangement for a complex joint, especially knee joint
US5282868A · kind A · utility
Inventor
Key dates
| Filing date | Jun 15, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Jun 15, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/3868
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To permit movement of coupling elements (13, 13a, 13b) which carry joint surfaces (21) congruent with condylar portions (19) of the prosthesis, the coupling elements are slidable in guide tracks (35), which are curved, and are widened at their terminal portions. The coupling elements have elongated engagement ribs which fit into the guide track groove, with minimum clearance and play at the narrowest, central portion of the guide groove, while permitting limited twisting as well as sliding movement due to the widened regions of the guide track at its end region. The position of guide track-rib can be reversed, if desired. The elements slide on a slide surface and can be retained, for example by an interlocking connection, such as a dovetail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.