Artificial knee having dual flexion action during locomotion
US5405408A · kind A · utility
Inventor
Key dates
| Filing date | May 14, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | May 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32819
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial knee having a dual flexion action during locomotion is disclosed. The knee comprises a femur part and a tibia part capable of rolling over each other in two different ways depending on whether or not the artificial leg is loaded. Pressure exerted on a cam surface of the femur part flattens the curvature of the cam surface, limiting the angle of rotation of the artificial knee when the knee is loaded. The parts are connected by elastic ties which are fixedly connected to the femur part and movably connected to the tibia part. When the knee is loaded, depending arms from the femur part contact the movable tibia connection and increase the elongation of the elastic ties, thereby additionally resisting rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.