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Active ankle foot orthosis

  • US 9,668,888 B2
  • Filed: 07/02/2014
  • Issued: 06/06/2017
  • Est. Priority Date: 09/25/2003
  • Status: Active Grant
First Claim
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1. An autonomous motorized assistance device comprising:

  • a motor mechanically coupled with a spring to a portion of the device, the motor powered by a power supply and applying torque about a joint to power the joint and assist a user;

    at least one sensor mounted to the device; and

    a controller receiving feedback from the sensor and controlling the motor for changing at least one of an impedance and a torque of the joint during at least one phase of a walking gait cycle comprising sequentially controlled plantarflexion, controlled dorsiflexion, powered plantarflexion, and a swing phase, thereby powering the joint and assisting the user.

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