PULSE OXIMETRY MOTION ARTIFACT REJECTION USING NEAR INFRARED ABSORPTION BY WATER

A method and apparatus for measuring physiological parameters obtaining a first signal derived from energy transmitted through a tissue portion at a first wavelength, said signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial puls...

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Bibliographic Details
Main Authors DEBRECZENY MARTIN, BAKER CLARK R. JR
Format Patent
LanguageEnglish
Published 30.01.2007
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:A method and apparatus for measuring physiological parameters obtaining a first signal derived from energy transmitted through a tissue portion at a first wavelength, said signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, at the first wavelength water is a dominant absorber of electromagnetic energy in the tissue portion; obtaining a second signal derived from electromagnetic energy transmitted through a tissue portion at a second wavelength, said signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, at the second wavelength hemoglobin is a dominant absorber of energy in the tissue portion; and combining the first and second signals to generate a combined plethysmograph signal, said combined signal has a signal portion corresponding with motion-related events that is smaller than that present in the first signal or second signal. ® KIPO & WIPO 2007
Bibliography:Application Number: KR20067020214