06839580 is referenced by 130 patents and cites 13 patents.

A method for calibrating a pulse oximeter device and an apparatus incorporating the method and a system for utilizing the method. The method is based on modeling light propagation in tissue at two wavelengths, typically, one in the red and one in the infrared range of the spectrum. A formula is derived relating the arterial oxygen saturation to a ratio R commonly measured by standard pulse oximeters. A specific parameter is identified and utilized in the calibration of the oximeter. This parameter is formulated in terms of the DC signals measured by the pulse oximeter at the two wavelengths. An empirical method for estimating this parameter based on experimental data is also described.

Title
Adaptive calibration for pulse oximetry
Application Number
10/309878
Publication Number
6839580 (B2)
Application Date
December 4, 2002
Publication Date
January 4, 2005
Inventor
Uday S Shankar
Alpharetta
GA, US
Vijay K Iyer
Export
PA, US
George Zonios
Ioannina
GR
Agent
Michael W Haas
Assignee
RIC Investments
DE, US
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