Photoplethysmographic device with species-specific calibration
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United States of America Patent
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Sep 30, 2008
Grant Date -
Nov 1, 2007
app pub date -
Apr 27, 2006
filing date -
Apr 27, 2006
priority date (Note) -
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Abstract
A method and apparatus for photoplethysmographic measurements from non-human species is disclosed. The extinction of light by hemoglobin, as a function of wavelength, varies as a function of the species of the subject being monitored. The calibration of a photoplethysmographic device should therefore also vary dependant upon the species of the subject. The photoplethysmographic device of this invention includes calibrations specifically designed to provide accurate readings on non-human subjects.
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