Electrode break detection
US11493473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2018 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | May 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/48707
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for determining a failsafe value for a biosensor having two perimeter electrodes, a distal electrode, and a proximal electrode are disclosed. A liquid measuring medium is applied to a capillary channel of the biosensor. The method includes applying an alternating voltage to the perimeter electrode and the proximal electrode, measuring conductivity to determine a first impedance between the perimeter electrode and the proximal electrode, applying the alternating voltage to the perimeter electrode and the distal electrode, measuring conductivity to determine a second impedance between the perimeter electrode and the distal electrode, determining a value using the first impedance and the second impedance, and providing an error message to the user if the value is out of tolerance. If the value is out of tolerance, then defects or breaks in the electrodes and/or reagent in a reaction area are present and the method disallows the test result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.