Multi-functional artifical knee joint
US6997959B2 · kind B2 · utility
6Cited by
4References
8Claims
0Family size
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jul 30, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/607
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial knee joint connects a prosthetic lower leg to a residual thigh of a prosthesis wearer, and includes a knee-extending oil passage and a knee-flexing oil passage that is provided with a throttle valve. When the lower leg is pressed against the ground by the thigh, a controlling element activates the throttle valve to close the knee flexing oil passage so as to fix the thigh relative to the lower leg. Upon fast walking of the wearer, an air valve unit activates the throttle valve to reduce flow rate of oil flowing through the knee-flexing oil passage so that the lower leg can support the thigh effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.