Artificial joint with a hydraulic damping cylinder
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United States of America Patent
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-
Sep 1, 1998
Grant Date -
N/A
app pub date -
Jan 23, 1995
filing date -
Jun 9, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device for damping of the turning movement of a joint such as an artificial knee joint is built into a bearing bridge of a joint. The joint can be a seven pivot point joint with a shaft of one of the pivot points being provided with a gear-wheel. The damping device includes a hydraulic cylinder with a piston connected to the gear-wheel. Channels with chokes and back valves connect the two sides of the piston of the hydraulic cylinder whereby adjustable damping in several steps can be achieved. A compact design for a joint and damping cylinder is achieved.
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