ECG synchronized pulse oximeter

Details ECG synchronized pulse oximeter ECG synchronized pulse oximeter

1988-10-14

1990-10-02

Sykes, Angela D.

Surgery

Truss

Pad

128666, 128700, A61B 502

Patent

active

049601261

ABSTRACT:
A pulse oximeter and method of determining the oxygen saturation level of a patient's blood wherein a heartbeat related signal is used, as a reference to guide the averaging of optical pulse waveforms. The oximeter and method assign different weighting to different optical pulses based upon the amplitude of new pulse waveforms and the degree of similarity between it and the preceding waveform. A composite, averaged pulse waveform is then used in computing oxygen saturation level.

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"Digital Enhancement of the Peripheral Admittance Plethysmogram", by Lloyd A. Marks, Member, IEEE, IEEE Transactions On Biomedical Engineering vol. BME-34, No. 3, Mar. 1987, pp. 192-198.
Nellcor Redefines Pulse Oximetry, Introducing the Nellcor N-200 With ECG Synchronization, Hayward, California.

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