Electrode systems for electrochemical sensors
US7074307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Nov 6, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates generally to systems and methods for improved electrochemical measurement of analytes. The preferred embodiments employ electrode systems including an analyte-measuring electrode for measuring the analyte or the product of an enzyme reaction with the analyte and an auxiliary electrode configured to generate oxygen and/or reduce electrochemical interferants. Oxygen generation by the auxiliary electrode advantageously improves oxygen availability to the enzyme and/or counter electrode; thereby enabling the electrochemical sensors of the preferred embodiments to function even during ischemic conditions. Interferant modification by the auxiliary electrode advantageously renders them substantially non-reactive at the analyte-measuring electrode, thereby reducing or eliminating inaccuracies in the analyte signal due to electrochemical interferants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.