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PROSTHETIC ANKLE AND METHOD OF CONTROLLING SAME BASED ON ADAPTATION TO SPEED

  • US 20140277586A1
  • Filed: 03/12/2014
  • Published: 09/18/2014
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method of controlling a prosthetic ankle device comprising a foot unit and a lower limb member configured to move relative to the foot unit and defining an angle therebetween, comprising:

  • at a gait speed less than a first threshold speed, operating the prosthetic ankle device using a neutral ankle angle;

    at a gait speed at or above the first threshold speed and below a second threshold speed, operating the prosthetic ankle device using a speed adaptive ankle angle that is less than the neutral ankle angle so that the prosthetic ankle device is relatively more dorsiflexed than when the prosthetic ankle device is operating using the neutral ankle angle; and

    at a gait speed at or above the second threshold speed, operating the prosthetic ankle device using a speed adaptive ankle angle that is more than the neutral ankle angle so that the prosthetic ankle device is relatively more plantarflexed than when the prosthetic ankle device is operating using the neutral ankle angle.

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