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Perfusion index smoother

DC CAFC
  • US 10,194,847 B2
  • Filed: 03/16/2015
  • Issued: 02/05/2019
  • Est. Priority Date: 10/12/2006
  • Status: Active Grant
First Claim
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1. A method of determining an indication of perfusion index in a patient monitor, the method comprising:

  • receiving pleth data;

    calculating at least two indications of perfusion index using at least two different calculation techniques; and

    determining a final indication of perfusion index based on the at least two indications of perfusion index, the final indication determined based on the signal quality, the lowest determined value of the at least two indications of perfusion index, an average of the at least two indications of perfusion index and a statistically analysis of the at least two indications of perfusion index.

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