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Identification and implementation of locomotion modes using surface electromyography

  • US 9,700,439 B1
  • Filed: 08/05/2014
  • Issued: 07/11/2017
  • Est. Priority Date: 04/15/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • affixing a plurality of prosthesis sensors to a lower limb prosthesis;

    affixing or connecting a plurality of EMG sensors to the prosthesis;

    determining, using a gait phase algorithm running on a processor, a gait phase based on an output of the prosthesis sensors;

    measuring signals from the plurality of EMG sensors;

    inputting the signals from the EMG sensors and information reflecting the gait phase to the processor;

    determining, using a locomotion mode algorithm running on the processor, a locomotion mode based on the information reflecting the gait phase and the signals from the EMG sensors; and

    providing the locomotion mode at the gait phase to an input of a controller of the lower-limb prosthesis,wherein the locomotion mode algorithm can determine a level walking mode, an obstacle mode, a stair ascent mode, a stair descent mode, an ipsi-turn mode, a contra-turn mode, and a standing mode.

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