Method and apparatus for removing artifact from physiological si

Details Method and apparatus for removing artifact from physiological si Method and apparatus for removing artifact from physiological si

1997-10-17

1999-10-26

O'Connor, Cary

Surgery

Diagnostic testing

Cardiovascular

600310, 600479, 600500, 600513, A61B 502

Patent

active

059719303

ABSTRACT:
A heart rate value determined from a first physiological signal that is acquired independently from a second physiological signal, is used to control a band pass filter for controllably bandpass filtering the second physiological signal. In a system having sensors for independently acquiring both electrocardiogram (ECG) and pulse oximetry (SpO2) signals, a heart rate value determined from the ECG signal is used to controllably bandpass filter the red and infrared SpO2 signals, thereby reducing the level of artifact signal in the SpO2 signals.

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