Dry electrode brain wave recording system
US4967038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Aug 25, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/22
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a medical electroencephalographic EEG system, a hat is placed on the head of the patient. The hat contains a plurality of electrodes conforming to the hat. A circuit board having a low-noise integrated circuit amplifiers may be mounted thereon. In one embodiment each of the electrodes has a number of flexible and elastic fingers, for example 2-16 gum rubber fingers, having a conductive tip at the end of each finger, or flexible fingers made entirely of conductive material. In another embodiment the multi-contact electrode uses fingers which are rigid and connected to a spring-loaded plate. The tips contact the patient's scalp, without conductive gel or liquid, to provide a redundancy of contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.