Electrochemical analyte sensor

US6484046B1 · kind B1 · utility

Assignee

• TheraSense, Inc. · US

Inventors

• James Say · St. Petersburg, US
• Michael F. Tomasco · Danville, US
• Adam Heller · Austin, US
• Yoram Gal · Morrison, US
• Behrad Aria · Alameda, US
• Ephraim Heller · Piedmont, US
• Phillip John Plante · Sunnyvale, US
• Mark S. Vreeke · Suwanee, US

Key dates

• Filing date: Jul 10, 2000
• Grant date: Nov 19, 2002
• Expiry date: Aug 20, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12Q1/006
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An electrochemical analyte sensor having conductive traces on a substrate is used to determine a level of analyte in in vitro or in vivo analyte-containing fluids. The electrochemical analyte sensor includes a substrate and conductive material disposed on the substrate, the conductive material forming a working electrode. In some sensors, the conductive material is disposed in recessed channels formed in a surface of the sensor. An electron transfer agent and/or catalyst may be provided to facilitate the electrolysis of the analyte or of a second compound whose level depends on the level of the analyte. A potential is formed between the working electrode and a reference electrode or counter/reference electrode and the resulting current is a function of the concentration of the analyte in the fluid.