Electro-stimulation apparatus using electrode matrix and a counter electrode
US6301500A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Apr 13, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0468
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electro-stimulation apparatus comprises an electrode system for measuring local electrical impedance. The electrode system includes a multitude of electrode pads and a counter electrode held at a reference voltage. The electrode pads and the counter electrode are assembled in an electrode unit. A particular embodiment of the electro-stimulation apparatus comprises an electronic circuit including a source group of electrode pads and a sink group of electrode pads and a source conductor for applying a first electrical quantity to electrode pads of the source group. The electronic circuit also includes a sink conductor for receiving a second electrical quantity from electrode pads of the sink group. Switching elements couple individual electrode pads of the source group to the source conductor. Other switching elements couple individual electrode pads of the sink group to the sink conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.