Ceramic single-plate capacitor EEG electrode
US6445940B1 · kind B1 · utility
14Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/276
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dry electrode, which is a single-plate capacitor, is particularly adapted to be placed on a patient's scalp to detect brain waves in an EEG system. The electrode comprises a metal disk sandwiched between very thin and relatively thicker layers of ceramic. The metal disk is attached to a small disk printed circuit board that carries an amplifier to amplify the brain waves detected by the electrode. The quality of contact of the electrode with the patient is measured by applying a pulse or voltage step through the ground electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.