A minimally-invasive system and method for monitoring...

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01) A61M 5/158 (2006.01) A61M 5/172 (2006.01)

Patent

CA 2471430

A minimally-invasive analyte detecting device (100) and method for using the same. The system and method employ a device having an active electrode (104) optionally coated with a substance (126), and a counter-electrode (106) that is configured at least partially surround the active electrode (104). The configuration of the auxiliary electrode (106) and active electrode (104) improves the current flow through the device (100) and increases the sensitivity of the device. When the device is placed against the patient's skin, the active electrode (104) is adapted to enter through the stratum corneum of a patient to a depth less than a depth in the dermis at which nerve endings reside. An electric potential is applied to the active electrode (104) and the analyte level is determined based on the amount of current or charge flowing through the device (100).

Cette invention a trait à un détecteur d'analysat (100), agissant de la manière la moins effractive qui soit, ainsi qu'à la méthode afférente. On utilise, dans le cadre de cette invention, un appareil possédant une électrode active (104), éventuellement recouverte d'une certaine substance (126) ainsi qu'une contre-électrode (106) configurée pour envelopper, du moins en partie, l'électrode active (104). La configuration de ces deux électrodes, auxiliaire et active (106, 104), améliore la circulation du courant dans le détecteur (100) et en augmente la sensibilité. Lorsque ce détecteur est en contact avec la peau d'un patient, l'électrode active (104) est en mesure de pénétrer dans la couche cornée de celui-ci et ce, jusqu'à une profondeur inférieure à celle du derme abritant les terminaisons nerveuses. On applique un certain potentiel électrique à l'électrode active (104) et l'on détermine la concentration en analysat en fonction de la quantité ou de la charge du courant circulant dans le détecteur (100).

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