Micro biosensor and measuring method thereof
US12097025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Jun 13, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a measuring method for prolonging a usage lifetime of a biosensor to measure a physiological signal representative of a physiological parameter associated with an analyte in a biofluid. The biosensor includes two working electrodes at least partially covered by a chemical reagent and two counter electrodes having silver and a silver halide, and each silver halide has an initial amount. The measuring method includes cyclic steps of: applying a measurement voltage to drive one of the two working electrodes at a measurement period to measure the physiological signal, thereby obtaining the physiological parameter, wherein the silver halide of one of the two working electrodes is consumed by a consumption amount; stopping applying the measurement voltage; and applying a replenishment voltage to drive the consumed counter electrode at a replenishment period to replenish the silver halide of a recharge amount to the consumed counter electrode, wherein: whenever the physiological parameter is obtained, a guarding value of a sum of the recharge amount and the initial amount subtracting the consumption amount is controlled within a range of the initial amount p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.