Artificial knee joint with a push rod biased to rotate a...

Details Artificial knee joint with a push rod biased to rotate a... Artificial knee joint with a push rod biased to rotate a...

2005-02-08

2005-02-08

Snow, Bruce E (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

Knee

Reexamination Certificate

active

06852131

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.

REFERENCES:
patent: 4005496 (1977-02-01), Wilkes
patent: 4145766 (1979-03-01), May
patent: 5728173 (1998-03-01), Chen
patent: 5755813 (1998-05-01), Krukenberg
patent: 5904721 (1999-05-01), Henry et al.
patent: 6517585 (2003-02-01), Zahedi et al.
patent: 6706074 (2004-03-01), Chen

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