Multi-functional artifical knee joint
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United States of America Patent
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Feb 14, 2006
Grant Date -
Feb 3, 2005
app pub date -
Aug 1, 2003
filing date -
Aug 1, 2003
priority date (Note) -
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status (Latency Note)
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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.
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