METHOD AND APPARATUS FOR OPTICAL DETECTION OF MIXED VENOUS AND ARTERIAL BLOOD PULSATION IN TISSUE

A method and device for detecting the presence of mixed venous and arterial blood pulsation in tissue, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to infrared and red wavelengths of light, obtaining a measure of a phase di...

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Bibliographic Details
Main Author CLARK R. BAKER JR
Format Patent
LanguageEnglish
Spanish
Published 17.04.2007
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:A method and device for detecting the presence of mixed venous and arterial blood pulsation in tissue, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to infrared and red wavelengths of light, obtaining a measure of a phase difference between the first and second electromagnetic radiation signals, comparing the measure with a threshold value to form a comparison, and detecting the presence or absence of venous pulsation using the comparison. Un metodo y dispositivo para detectar la presencia de pulsacion mezclada de sangre venosa y arterial en el tejido, que incluye recibir primera y segunda senales de radiacion electromagnetica de una porcion de tejido perfusionado de sangre que comprende longitudes de onda infrarroja y roja de luz, obtener una medida de una diferencia de fase entre la primera y segunda senales de radiacion electromagnetica, comparar la medida con un valor de umbral para formar una comparacion, y detectar la presencia o ausencia de pulsacion venosa utilizando la comparacion.
Bibliography:Application Number: MX2006PA10304