| abstract |
A medical electrode adapted for providing electrical contact with a patient's skin and comprising: (a) a conductive member including means for connecting the medical electrode to an external electrical apparatus; and (b) interfacing means comprising a solid sheet of a conductive viscoelastic hydrophilic gel consisting essentially of (i) water; (ii) a water soluble magnesium or calcium salt; and (iii) an amount dispersed uniformly throughout the water of from about 2 to 35 wt % of a cross-linked polyethylene oxide, effective to form with the water a tacky surface viscoelastic adhesive solid; which hydrophilic gel is produced by subjecting a liquid film of an aqueous solution of the water soluble salt and a linear water soluble polyethylene oxide having a weight average molecular weight from about 0.05-10x106 Daltons to an amount of high energy radiation effective to convert the liquid film to a sheet of adhesive viscoelastic solid. |