Micro biosensor and measuring method thereof
US11506627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for prolonging a usage lifetime of a micro biosensor to measure a physiological signal associated with an analyte is provided. The micro biosensor includes a working electrode, a counter electrode including silver and a silver halide having an initial amount, and an auxiliary electrode. The method includes cyclic steps of: applying a measurement voltage to drive the working electrode to measure the physiological signal; stopping applying the measurement voltage; and whenever the physiological parameter is obtained, applying a replenishment voltage between the counter electrode and the auxiliary electrode to drive the counter electrode, thereby the silver halide of a replenishment amount being replenished to the counter electrode, wherein a guarding value of a sum of the replenishment amount and the initial amount subtracting a consumption amount is controlled within a range of the initial amount plus or minus a specific value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.