Prosthesis for knee replacement
US5609639A · kind A · utility
Inventor
Key dates
| Filing date | Dec 9, 1993 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Dec 9, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00029
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A knee prosthesis includes a femoral component in which the condyles have a continuous contact surface for the tibial bearing surface and in which the sagittal radius is constant from posterior to a point more anterior than the distalmost point, The tibial bearing surface is shaped to have a curvature which corresponds closely with that of the femoral condylar surfaces. The tibial component includes a plastics meniscus component supported on a metal platform for sliding movement in the anterior-posterior direction and the mating surface between the meniscus and platform has a sagittal curvature which is larger than the sagittal radius of the femoral condyles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.