Surface electromyographic electrode assembly
US6865409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrode assembly for use on a surface of biological tissue to measure bio-electric signals including an electrode apparatus having an electrode device adapted to directly contact the surface of the biological tissue. The electrode apparatus receives and transmits bio-electric signals measured across the biological tissue having a first voltage and a minute first current. A signal transmission line is included having a signal transmission conductor electrically coupled at one portion to the electrode device for transmission of the bio-electric signals. The transmission includes a second conductor electrically coupled to the amplifier apparatus and arranged to substantially shield the transmission conductor from ambient electric fields generated from sources external to the transmission line. A high impedance amplifier device is included having a signal input and a signal output. The signal input is electrically coupled to another portion of the signal transmission conductor for receipt of the transmitted bio-electric signals. The signal output is electrically coupled to the shield conductor, in a feedback loop, for receipt of at least a portion of the transmitted bio-electric s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.