Prosthesis electrode with multi-layer membrane
US4336811A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1980 |
| Grant date | Jun 29, 1982 |
| Priority date | — |
| Expiry date | Jul 9, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0565
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthesis electrode for electrically stimulating body tissue. The electrode has a metal tip covered by a non-metallic coating composed of a compound of the metal in the tip. Covering the non-metallic coating is an ion-conducting membrane which prevents the metal tip and the non-metallic coating from contacting the body tissue. The membrane comprises a specific ion-conducting inner membrane layer which prevents transference to the body tissue of ions in the coating which enter into undesirable reactions with the body tissue. On the outside of the inner membrane is a non-specific ion-conducting outer membrane layer which is non-toxic to body tissue and which prevents changes in salt concentration in the body tissue adjacent the electrode during a biphasic pulse of the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.