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US 2003/0155237 A1Published application
Electrodes, methods, apparatuses comprising micro-electrode arrays
AssigneesRoche Diagnostics Operations, Inc., Corange International Limited
InventorsNigel A. Surridge, Christopher D. Wilsey
Life of this patent
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Abstract
Described are micro-arrays of electrodes disposed proximal to a flexible substrate, electronic components and sensors comprising such arrays, and methods of use for such arrays.
Claims24
An electrochemical sensor for detection of an analyte in a test sample, said sensor comprising:
- a substrate having a working electrode and a counter electrode formed thereon;
- a chemical coating deposited into a chamber formed on the substrate over the working and counter electrodes;
- said chemical coating comprising an enzyme and a mediator in a matrix, wherein said sensor provides an accurate reading of the amount of analyte in the test sample within 10 seconds or less after deposition of the test sample to the chamber.
A method of evaluating the concentration of an analyte in a test sample, said method comprising:
- supplying a test sample containing the analyte to a chamber on a sensor, said sensor comprising a working electrode, a counter electrode, and a chemical coating deposited therein, said chemical coating including an enzyme and a mediator;
- applying a voltage potential across the working electrode and the counter electrode,
- measuring a stable current generated at the working electrode within 10 seconds or less after said depositing.
Dependencies are inferred from the claim text.