Ion mobility limiting iontophoretic bioelectrode
US4416274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0448
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bioelectrode for use in the iontophoretic delivery of ions into the skin or tissue of a person includes either a receptacle or a composition of material suitable for holding ions to be delivered, a metallic foil disposed on one side of the receptacle or composition of matter, and a coupling device for electrically coupling the foil to an electrical source. The other side of the receptacle or composition of material is for placement against a person's skin or tissue so that ions may be delivered thereinto. The receptacle or composition of material both include features or characteristics which inhibit the migration of ions laterally therein, i.e., in a direction generally parallel to the surface of the skin or tissue, but which allow migration in a direction generally perpendicular to the surface of the skin or tissue, and in particular from the metal foil toward the person's skin or tissue. The advantage of this capability is to provide a substantially uniform movement of ions into the skin or tissue over surface area of contact of the bioelectrode with the skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.