Non-invasive measurement of blood glucose

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01)

Patent

CA 2528513

An apparatus carries out measurements of blood glucose in a repeatable, non- invasive manner by measurement of the rate of regeneration of retinal visual pigments, such as cone visual pigments. The rate of regeneration of visual pigments is dependent upon the blood glucose concentration, and by measuring the visual pigment regeneration rate, blood glucose concentration can be accurately determined. This apparatus exposes the retina to light of selected wavelengths in selected distributions and subsequently analyzes the reflection (as color or darkness) from a selected portion of the exposed region of the retina, preferably from the fovea.

L'invention concerne un appareil permettant de mesurer le glucose sanguin de manière reproductible et non effractive, par la mesure de la vitesse de régénération de pigments visuels rétiniens tels que les pigments visuels coniques. La vitesse de régénération des pigments visuels dépend de la concentration du glucose sanguin, et la mesure de la vitesse de régénération des pigments visuels permet de déterminer précisément la concentration du glucose sanguin. Cet appareil expose la rétine à la lumière de longueurs d'onde sélectionnées, selon des répartitions sélectionnées, et analyse ensuite la réflexion (comme couleur ou luminosité) d'une partie sélectionnée de la région exposée de la rétine, de préférence la fovéa.

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