×

Powered joint orthosis

  • US 9,839,552 B2
  • Filed: 01/10/2012
  • Issued: 12/12/2017
  • Est. Priority Date: 01/10/2011
  • Status: Active Grant
First Claim
Patent Images

1. A powered device for augmenting a joint function of a human during a gait cycle, the powered device comprising:

  • a powered actuator for supplying an augmentation torque and an impedance to a joint; and

    a controller programmed to modulate the augmentation torque, the impedance, and a joint equilibrium according to a phase of the gait cycle to provide at least a biomimetic response, wherein the controller is programmed to;

    compute a normalized biomimetic torque for the phase of the gait cycle, the normalized biomimetic torque according to a speed of ambulation, a terrain, or both a speed of ambulation and a terrain;

    retrieve a state-specific attenuation factor for the phase of the gait cycle;

    scale the normalized biomimetic torque based on the state-specific attenuation factor to determine the augmentation torque; and

    add the augmentation torque to a wearer torque response to approximate the biomimetic response.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×