Method and apparatus for estimating a physiological parameter

Details Method and apparatus for estimating a physiological parameter Method and apparatus for estimating a physiological parameter

2011-01-04

2011-01-04

Winakur, Eric F (Department: 3768)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S502000

Reexamination Certificate

active

07865224

ABSTRACT:
In a physiological monitor, a method and an apparatus for determining a patient's pulse rate using data corresponding to a plurality of wavelengths of electromagnetic energy transmitted through the tissue of the patient. The method includes tracking the pulse rate in the data using an adaptive comb filter, the data having signal portions corresponding to the pulse rate and signal portions corresponding to noise, periodically calculating a frequency power spectrum of one of the wavelengths, and using the frequency power spectrum in a pulse rate calculator to determine the pulse rate or to verify the pulse rate calculated by the pulse rate calculator.

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