Device and method for measuring a property of living tissue
US8197406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2004 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/14532
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for measuring the glucose level in living tissue has electrodes (5, 6) for being brought into contact with the specimen and a voltage-controlled oscillator (31) as a signal source for generating an AC voltage in a given frequency range. The AC voltage is applied to the electrodes (5, 6). A voltage over the electrodes is fed to a processing circuitry (37, 38), which converts it to the glucose level using calibration data. The voltage-controlled oscillator (31) has a symmetric design with adjustable gain for generating signals in a large frequency range with low distortions at a low supply voltage. The processing circuit comprises a simple rectifier network with software-based correction. The electrodes (5, 6) are of asymmetric design and optimized for biological compatibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.