Lower limb joint orthosis and control method therefor
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United States of America Patent
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Oct 28, 2014
Grant Date -
Jun 7, 2012
app pub date -
Sep 22, 2010
filing date -
Sep 25, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A lower-limb joint orthosis includes a lower component supporting the foot region, an upper component attached to the lower-limb, and an orthotic joint coupling both components. The orthotic joint includes: a stator including some fluid chambers in which an MR fluid is enclosed; and a rotor including partition plates protruding into the respective fluid chambers. The stator includes a communication path between the anterior chamber and the posterior chamber. The rotor includes connection paths that connect the anterior chambers together, and connect the posterior chambers together. An electromagnet is placed on a side surface of the communication path so that a rotational resistance of the lower component and the upper component is adjusted by adjusting a magnetic force to control the viscosity of the MR fluid that flows through the communication path.
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Family
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