Disposable biomedical and diagnostic electrode

Claim 1

A disposable electrode for medical diagnostic and biomedical use, and for clinical use, said electrode comprising a composite assembly including: a support sheet connected to and surmounting said assembly, said support sheet comprising a wafer-like disk having an underside for application of an adhesive thereon, said disk being formed with a gel storage cavity defining reservoir means for confining a conductive gel therein, a conductive gel stored in said reservoir means, band means bridging said gel storage cavity and serving as a bottom closure for said reservoir means, said band means having an upper surface presented to said support sheet and a lower surface for securement to a patient's body, adhesive means bonding said upper surface of said band means to said support sheet on said underside thereof, a conductive adhesive composition constituting a conductive layer coating said lower surface of said band means for adhesively securing said electrode to a patient's body, said band means including means in electrically conductive communication with said conductive adhesive composition for attachment of an electrical lead line thereto, port means including passage-defining means formed in said band means for providing fluid-flow communication between said reservoir means and said conductive adhesive composition for releasing said gel from said reservoir means, said port means being normally constricted and being selectively actuable to open to release gel from said reservoir means and to provide an enhanced conductive path between said conductive adhesive composition and a body surface to which said electrode is applied.