Polarographic-amperometric three-electrode sensor
US5000180A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jul 31, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1473
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
For a potentiostatically operable, polarographic-amperometric sensor, in particular for biomedical use, wherein a working electrode (5) and a reference electrode (4) are covered by an electrolyte layer (9) which is separated from the medium to be measured by a semipermeable membrane (8), the invention proposes to provide the counter electrode (6) in the form of an external electrode which--for example--can be an outer metal coating surrounding the sensor chip (2) in a three electrode system fabricated as micro-sensor with the integrated technique, and which can be made--for example--of a stainless steel material or of a conductive plastics material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.