Michael A Wilson
Plumbers at Carla Dr, Loveland, CO

4300575, Nov 17, 1981

Jun 25, 1979

6/051593

Michael A. Wilson - Loveland CO

Staodynamics, Inc. - Longmont CO

A61N 104

128798

A disposable electrode is disclosed that is air-permeable over at least that portion of the electrode that is engageable with the skin of a patient, and is non-metallic and nonionic. The electrode includes a conductive silicone pad adapted to receive one end of an electrical lead from an active electrical instrument, and particularly an electronic medical instrument such as a transcutaneous nerve stimulator. The pad engages a permeable conductive element that is skin engageable through a permeable conductive adhesive coating. The permeable conductive element is formed primarily from karaya and carbon black so that the element can "breathe". The permeable conductive adhesive coating is likewise formed primarily from karaya so that the coating can also "breathe". A cover, likewise of air-permeable material, is provided with an adhesive on the inner side contacting the rear portions of the pad and conductive element with the cover extending outwardly thereof so that the outer edges of the inner side of the cover are engageable with the skin of a patient to hold the electrode in position. A carrier, preferably release paper, is also provided to cover the adhesive coating on the conductive element and the outer portions of the cover to protect the electrode until use on a patient.