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Plethysmograph pulse recognition processor

  • US 7,044,918 B2
  • Filed: 10/27/2004
  • Issued: 05/16/2006
  • Est. Priority Date: 12/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for identifying pulses in a plethysmograph waveform comprising:

  • acquiring plethysmograph waveform data comprised of data related to one or more signals received from a light-sensitive detector that detects light having a plurality of wavelengths transmitted through body tissue carrying pulsing blood;

    removing at least some waveform features from the plethysmograph waveform data that do not correspond to an idealized waveform;

    selecting data representing potential pulses from within the plethysmograph waveform data;

    determining time domain features of the data representing potential pulses; and

    utilizing said time domain features to identify which of the data representing potential pulses corresponds to data representing physiologically acceptable pulses.

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