Artificial knee with rotatable meniscus
US6419707B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Aug 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00011
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial knee joint has a meniscus part (1) which is displaceably journalled on a tibia platform (2) and a guiding part (7) which is rotatably journalled on the tibia platform (2) and which engages into a guide (8) of the meniscus part (1), with the guiding part and the meniscus part having lateral guiding surfaces (9a, 10a; 9b, 10b) for guiding the meniscus part (1). In order to limit the surface pressure between the guiding surfaces (9a, 9b; 10a, 10b) the lateral guiding surfaces (9a, 9b; 10a, 10b) have different radii of curvature (R1, R2) which are greater than 10 cm, with the sum of the reciprocals of the radii of curvature 1/R1+1/R2 being less than 0.2 cm−1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.