Electrochemical sensor having equalized electrode areas

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/00 (2006.01) C12Q 1/54 (2006.01) G01N 27/327 (2006.01)

Patent

CA 2302447

An improved electrochemical sensor strip is disclosed. In a multiple electrode sensor strip, equalization of electrode nonworking areas, as well as working areas, enhances the overall precision and accuracy of the measurements made using the sensor strip. The beneficial effect of area equalization is most pronounced at relatively low glucose concentrations. In the present invention, the exactness and reproducibility of electrode area equalization is improved by avoidance of overlap between the electrodes and a dielectric coating that defines an electrode exposure area.

Cette invention concerne une bandelette de capteur électrochimique. Dans une bandelette de capteur à plusieurs électrodes, l'équilibrage des surfaces non actives ainsi que des surfaces actives d'électrodes améliore la précision et l'exactitude globale des mesures effectuées à l'aide de la bandelette de capteur. L'effet bénéfique de l'équilibrage des surfaces est plus prononcé avec des concentrations de glucose relativement faibles. Dans cette invention, l'exactitude et la reproductibilité de l'équilibrage des surfaces d'électrodes est améliorée du fait qu'on évite le chevauchement entre les électrodes et un revêtement diélectrique qui définit une surface d'exposition de l'électrode.

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