Ankle prosthesis
US7625409B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 14, 2004 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Mar 31, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4207
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fixed-bearing ankle prosthesis may include tibial and talar components whose articulating surfaces directly contact one another. The tibial component defines medial and lateral concave condylar facets separated by a convex central portion. The talar component includes medial and lateral convex condyles separated by a concave central portion. The condyles each have a single radius of curvature in a medial-lateral plane such that each condyle has a circular-arc cross-section continuously extending from the respective medial or lateral edge of the talar component to the concave central portion. The medial-lateral radii of the condyles are smaller than corresponding radii of the condylar facets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.