Artificial knee joint with a push rod biased to rotate a prosthetic lower leg rapidly to align with a residual thigh
US6852131B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Aug 18, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/5075
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial knee joint includes a joint seat, a support frame, a hydraulic device, a push rod, and a biasing member. The joint seat has a joint body and a rotatable member connected pivotally to the joint body and connected fixedly to a residual thigh. The support frame is connected rotatably to the joint body, and is connected fixedly to a prosthetic lower leg. The push rod is movable relative to the joint body between an extended position, where a free end of the rotatable member is spaced apart from the joint body to align the lower leg with the thigh, and a retracted position, where the free end of the rotatable member abuts against the joint body. The biasing member biases the push rod to the extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.