04807631 is referenced by 215 patents and cites 6 patents.

A pulse oximetry system is provided in which LEDs of two different wavelengths illuminate tissue containing arterial blood flow. A photodiode receives light from the LEDs and produces electrical signals containing pulsatile components. The components of the two wavelengths are separated and the pulsatile waveforms are monitored until signal peaks are detected at the end of diastole. The waveforms are then integrated over the systolic interval, and the integrals are combined with the signal peak values to determine an index value. The index value is used to select a value representative of oxygen saturation from a look-up table.

Title
Pulse oximetry system
Application Number
7/107138
Publication Number
4807631
Application Date
October 9, 1987
Publication Date
February 28, 1989
Inventor
Rush W Hood Jr
Tampa
FL, US
Richard Medero
Clearwater
FL, US
Lawrence T Hersh
Tampa
FL, US
Assignee
Critikon
FL, US
IPC
A61B 5/00
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