Composite signal implementation for acquiring oximetry signals

Details Composite signal implementation for acquiring oximetry signals Composite signal implementation for acquiring oximetry signals

1989-10-05

1992-03-10

Kamm, William E.

Surgery

Truss

Pad

356 41, A61B 500

Patent

active

050942395

ABSTRACT:
An oximeter system for measuring blood oxygen saturation using a noninvasive optical technique is disclosed. A patient's arterial blood is illuminated with light at two different wavelengths and the intensity of the light which is transmitted through or reflected by said arterial blood is correlated with the blood oxygen saturation of the tissue. The system provides a manner in which filtering artifacts are avoided in the oximeter signal using a high resolution analog-to-digital converter of 14 bits or more, such that, it is unnecessary to separate the DC and pulsatile components of the oximeter signal prior to processing within the microprocessor.

REFERENCES:
patent: 4573778 (1986-03-01), Shapiro et al.
patent: 4773422 (1988-09-01), Isaacson et al.
patent: 4869254 (1989-09-01), Stone et al.
patent: 4877084 (1989-10-01), Atkins et al.
patent: 4934372 (1990-06-01), Corenman et al.

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