Green light pulse oximeter

Details Green light pulse oximeter Green light pulse oximeter

1996-11-18

1998-11-03

Nasser, Robert L.

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

A61B 500

Patent

active

058301372

ABSTRACT:
A reflectance pulse oximeter that determines oxygen saturation of hemoglobin using two sources of electromagnetic radiation in the green optical region, which provides the maximum reflectance pulsation spectrum. The use of green light allows placement of an oximetry probe at central body sites (e.g., wrist, thigh, abdomen, forehead, scalp, and back). Preferably, the two green light sources alternately emit light at 560 nm and 577 nm, respectively, which gives the biggest difference in hemoglobin extinction coefficients between deoxyhemoglobin, RHb, and oxyhemoglobin, HbO.sub.2.

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