Apparatus for measuring blood glucose concentrations

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01) G01N 21/64 (2006.01)

Patent

CA 2441787

An apparatus for measuring ocular and/or blood glucose levels comprises (a) an irradiating means (10) for irradiating light onto the eye (1) of a user from outside the cornea of the eye to excite an ocular glucose sensor in contact with an ocular fluid, said sensor being able to emit a total fluorescence having first and a second wavelength bands; (b) an optical path splitting means (11) for splitting said total fluorescence into a first fluorescence and a second fluorescence, said first fluorescence and said second fluorescence travelling along first and second optical paths; (c) a first detecting means (14) located in the first optical path; (d) a second detecting means (17) located in the second optical path; (e) a calculating means for calculating the intensity ratio of the first fluorescence to the second fluorescence and for determining an ocular glucose concentration in the ocular fluid; and (f) an arithmetic means for converting the ocular glucose concentration into a blood glucose concentration.

Appareil destiné à mesurer les taux de glucose oculaire et / ou sanguin qui comporte (a) un moyen de rayonnement (10) permettant d'envoyer de la lumière sur l'oeil (1) d'un utilisateur depuis l'extérieur de la cornée de l'oeil pour exciter un capteur de glucose oculaire situé en contact avec un fluide oculaire, ledit capteur étant capable d'émettre une fluorescence totale ayant des première et seconde bandes de longueur d'onde, un diviseur (11) de chemin optique destiné à diviser cette fluorescence totale en une première fluorescence et une seconde fluorescence, ladite première fluorescence et ladite seconde fluorescence se déplaçant le long de premier et second chemins optiques, (c) un premier moyen de détection (14) situé dans le premier chemin optique, (d) un second moyen de détection (17) situé dans le second chemin optique, (e) un moyen de calcul destiné à calculer le rapport d'intensité de la première fluorescence à la seconde fluorescence et à déterminer une concentration de glucose oculaire dans le fluide oculaire et (f) un moyen arithmétique destiné à convertir la concentration de glucose oculaire en une concentration de glucose sanguin.

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