Arrestable knee joint

Details Arrestable knee joint Arrestable knee joint

1986-05-28

1987-08-11

Apley, Richard J.

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

Leg

Knee

A61F 264

Patent

active

046859268

ABSTRACT:
An arrestable knee joint, comprising a thigh member; a lower leg member; rotatably articulated on the thigh member to form a knee joint; and a mechanism for releasably arresting the members in the extended position, comprising a spring-loaded arresting element mounted in the lower leg member, structure associated with the thigh member for engaging the arresting element when the members are in the extend position, a rocker arm assembly having a first arm attached to the arresting element and a second arm extending away from a rotational axis of the rocker arm assembly on a side opposite from the first arm, and a Bowden wire inserted into the lower leg member and attached to the second arm of the rocker arm assembly. A release mechanism is provided in the thigh member.

REFERENCES:
patent: 3739404 (1973-06-01), Gelbenegger
patent: 3833942 (1974-09-01), Collins
patent: 4232405 (1980-11-01), Janovsky
patent: 4614518 (1986-09-01), Lehneis et al.

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