Pulse oximeter

Details Pulse oximeter Pulse oximeter

1988-02-11

1989-11-28

McGraw, Vincent P.

Optics: measuring and testing

Blood analysis

Hemoglobin concentration

128633, G01N 3349

Patent

active

048833533

ABSTRACT:
A pulse oximeter having a sensor responsive to light transmitted through an area of blood flow which is optically absorbed by hemoglobin for producing a pulsatile waveform indicating the current pulsatile component of blood flow. A process waveform is created for tracking the process of the oximeter during its determination of a maximum and a minimum value of the pulsatile waveform, which is used for calculating the saturation of oxygen.

REFERENCES:
patent: 3412729 (1968-11-01), Smith, Jr.
patent: 4167331 (1979-09-01), Nielsen
patent: 4407290 (1983-10-01), Wilber et al.
patent: 4714341 (1987-12-01), Hamaguri et al.

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