Circulation monitoring system and method
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United States of America Patent
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Dec 8, 2009
Grant Date -
Jun 11, 2009
app pub date -
Dec 11, 2007
filing date -
Feb 28, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A lightweight portable probe or transducer containing a transmissive or reflective electro-optical emitter and receptor in the infrared spectrum is fitted on a subject's finger or toe. Associated electronics energize and monitor the probe, detect cardio-rhythmic fluctuations therefrom, and process digital data over a prescribed window to produce a non-invasive, qualitative or quantitative measure of the subject's circulation. In accordance with one embodiment of the invention, a simple tri-color LED array is used to indicate the subject's circulation as being normal, reduced, or borderline.
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