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Methods and systems for determining a probe-off condition in a medical device

  • US 8,922,788 B2
  • Filed: 12/22/2012
  • Issued: 12/30/2014
  • Est. Priority Date: 12/22/2012
  • Status: Active Grant
First Claim
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1. A method for determining whether a physiological sensor is properly positioned on a subject, the method comprising:

  • receiving a light signal using the physiological sensor;

    processing, using processing equipment, the light signal to obtain a first signal corresponding to ambient light;

    processing, using the processing equipment, the light signal to obtain a second signal corresponding to an emitted photonic signal and ambient light;

    analyzing, using the processing equipment, the first signal and the second signal to identify similar signal amplitude behavior; and

    determining, using the processing equipment, that the physiological sensor is not properly positioned based on the analysis.

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