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Neural monitoring sensor

  • US 8,343,079 B2
  • Filed: 08/16/2010
  • Issued: 01/01/2013
  • Est. Priority Date: 10/18/2007
  • Status: Active Grant
First Claim
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1. A sensing device for detecting an induced muscle event of a subject comprising:

  • a mechanical sensor configured to be placed in contact with the skin of the subject, the mechanical sensor including an accelerometer configured to monitor an acceleration response of a muscle, the acceleration response including an acceleration attributable to a depolarization of a nerve innervating the muscle the mechanical sensor further configured to provide a mechanomyography output signal corresponding to the monitored muscle acceleration response;

    wherein the sensing device is configured to detect the induced muscle event from the mechanomyography output signal, the induced muscle event being attributable to the depolarization of the nerve innervating the muscle in response to a provided electrical stimulus;

    wherein detecting the induced muscle event includes calculating a time derivative of acceleration from the mechanomyography output signal, and comparing time derivative of acceleration to a threshold.

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