Electrode with improved signal to noise ratio

A - Human Necessities – 61 – B

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A61B 5/00 (2006.01) C12Q 1/54 (2006.01) G01N 27/30 (2006.01)

Patent

CA 2283240

An electrode assembly for sensing an electrochemical signal diffused from a source to a working electrode which is comprised of a plurality of substantially separated working electrode surfaces is disclosed. The electrode of the invention is comprised of (1) a working electrode made up of a plurality of working electrode surfaces or components, and (2) an electrically insulating gap defined by adjacent edges of (1) insulating the working electrode surfaces or components from each other. The working electrode components are configured to receive electrochemical signal from two or preferably three dimensions simultaneously. The working electrode components configured over the same surface as a single electrode provide (1) an improved signal to noise ratio as compared to a single electrode by reducing noise, and (2) provided an overall enhanced signal after sensing for a given period of time.

L'invention concerne un ensemble électrode destiné à détecter un signal électrochimique diffusé à partir d'une source vers une électrode de travail composée de plusieurs surfaces d'électrodes de travail sensiblement séparées. L'électrode de l'invention se compose: 1) d'une électrode de travail formée de plusieurs surfaces ou composants d'électrodes de travail et 2) un espace isolant défini par des bords contigus de 1) et isolant les surfaces ou composants des électrodes de travail les uns des autres. Les composants d'électrode de travail sont configurés pour recevoir un signal électrochimique simultanément à partir de deux ou de préférence trois dimensions. Les composants d'électrode de travail configurés sur la même surface que pour une électrode simple permettent d'obtenir (1) un rapport signal-bruit amélioré en comparaison avec celui d'une électrode simple, grâce à la réduction du bruit, et (2) un signal amélioré dans l'ensemble après détection pendant une période donnée.

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