A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/17, 326/9
A61N 1/20 (2006.01)
Patent
CA 1118052
ABSTRACT This invention pertains to plural electrodes for application to a living subject having skin, to accomplish effects related to the passage of electric current. Using known electrodes in direct current applications frequently results in iontophoretic burns to the patient, generally at the negative electrode. These burns are not caused by elevated temperature but by a spontaneous effect of the ele?tric current on the skin. These burns require a relatively long time to heal, and can result in formation of unsightly and highly undesirable scar tissue. According to the present invention, at least the area of the negative electrode in contact with the skin is covered with felt- like material, preferably m?istened, and having a thick- ness in excess of three millimeters. Compliance with a current-time limitation according to the method essen- tially avoids iontophoretic burns. Electively, this negative electrode structure allows increasing the size of the positive electrode, permitting a larger treatment current with reduced discomfort. Intermingled positive and negative electrodes may be used.
312492
Gowling Lafleur Henderson Llp
Tapper Robert
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