Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1993-04-26
1994-07-19
Cohen, Lee S.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
128639, 128640, 128641, 607149, 252500, 522 79, 522 86, 522152, A61N 118
Patent
active
053305272
ABSTRACT:
A hydrogel matrix is provided for a multipupose medical electrode having an electrically conductive backing. The matrix comprises a dispersion of a natural or a synthetic hydrophilic polymer, e.g., polyacrylamide, polyacrylic acid, modified starch, or gum karaya, gum acacia, locust bean gum or the like, water, and a humectant such as triethylene glycol or glycerol. The matrix is a flexible sheet having a tacky lower surface for establishing a bond to provide electrical contact with the skin of a patient. The matrix has a resistivity greater than the resistivity of the electrical conductive backing and includes a gelation inhibitor such as a salt of a weak acid, e.g., Mg(OAc).sub.2 uniformly distributed within the matrix in an amount sufficient to retard gelation of the matrix prior to forming the matrix into a flexible sheet.
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Montecalvo David A.
Rolf David
Casler Brian L.
Cohen Lee S.
Harmon James V.
Lec Tec Corporation
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