Endoprosthetic ankle joint
US4232404A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1978 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jul 11, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00029
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoprosthetic ankle joint device comprises a talar component with a convex articulatory surface having an intermediate part-circular-cylindrical area coaxially flanked at each end by like mutually divergent part-conical areas, and a tibial component with an assymetrical concave articulatory surface complementary with said convex cylindrical area and one of said conical areas. In one form of the device the tibial concave surface has areas complementary with each of the talar conical areas, but to different extents, with the former areas being respectively axially longer and shorter. In another form, the tibial concave surface is only complementary with one of the talar conical areas, and the device comprises a fibular component for articulation with the other talar conical area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.