Strip electrode with screen printing
US5820551A · kind A · utility
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0418
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor system that detects a current representative of a compound in a liquid mixture features a two-electrode strip adapted for releasable attachment to signal readout circuitry. The strip comprises an elongated support (preferably flat) adapted for releasable attachment to the readout circuitry; a first conductor and a second conductor each extend along the support and comprise means for connection to the circuitry. An active electrode, positioned to contact the liquid mixture and the first conductor, comprises a single layer deposit of an enzyme capable of catalyzing a reaction involving the compound, a conductive material and an electron mediator, capable of transferring electrons between the enzyme-catalyzed reaction and the first conductor. A reference electrode is positioned to contact the mixture and the second conductor. The system includes circuitry adapted to provide an electrical signal representative of the current. The two-electrode strip is manufactured, e.g., by screen printing an admixture of an enzyme, a conductive material, and a mediator as a single layer onto the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.