Semi-constrained ankle joint prosthesis and its method of implantation
US9320609B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 1, 2004 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00029
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The ankle joint prosthesis adapted to involve the patient's distal tibia and talus has, according to the present invention, tibial, talar and mobile or semi-constrained bearing components that are laterally to medially implanted in the patient. The tibial component's top surface has convex curvature in its anterior to posterior plane and is configured so as to approximate and match with the curvature of a prepared portion of the distal tibia; its bottom surface being approximately flat. The talar component's top surface has saddle-shaped, convex curvature in its anterior to posterior plane, it's bottom surface has concave curvature and is configured so as to approximate and match with the curvature of a prepared portion of the talus. The mobile or semi-constrained bearing components have embodiments that comprise a wide variety of geometric shapes. A method for implanting such a prosthesis is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.