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Variable mode pulse indicator

  • US 10,064,562 B2
  • Filed: 11/20/2015
  • Issued: 09/04/2018
  • Est. Priority Date: 10/12/2006
  • Status: Active Grant
First Claim
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1. A method of configuring output indications of pulse occurrences in an patient monitor capable of monitoring a pulse rate through a signal from a noninvasive optical sensor, the method comprising:

  • generating a user interface including configuration parameters for audio or visual indication of pulse;

    receiving user selection of the configuration parameters for the audio or visual indication of pulse;

    electronically receiving an input signal including plethysmograph data from said noninvasive optical sensor;

    electronically creating a waveform segment from the input signal;

    electronically identifying a feature in the waveform segment, wherein the feature comprises;

    a downward edge, a peak in the middle with symmetry with respect to the peak, or a peak in the middle with a gradual decline;

    electronically determining a measure of distortion in said input signal;

    electronically generating a quality indicator of the waveform segment based on the identification of the feature and the measure of distortion; and

    when said measure indicates a high level of distortion and the quality indicator indicates that the waveform segment includes a pulse, outputting an indication of the pulse to the patient monitor according to the selected configuration parameters.

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