Importance

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Abstract

An electrode assembly for iontophoresis including an electrode coupled to an electric power source device having a same polarity as that of the ionic drug in the electrode assembly, an electrolyte solution holding portion holding an electrolyte solution by being impregnated with the electrolyte solution, the electrolyte solution holding portion being placed adjacent to the electrode, a first ion exchange membrane operable to substantially pass ions having a polarity that is same as a polarity of the ionic drug and substantially block ions having a polarity that is opposite the polarity of the ionic drug, the first ion exchange membrane being placed adjacent to the electrolyte solution holding portion, a drug solution holding portion holding the ionic drug by being impregnated with the ionic drug, the drug solution holding portion being placed adjacent to the first ion exchange membrane, a second ion exchange membrane operable to substantially pass ions having a polarity that is opposite the polarity of the ionic drug and substantially block ions having a polarity that is the same as the polarity of the ionic drug, the second ion exchange membrane being placed adjacent to the drug solution holding portion, and a shape-memory separator capable of being transformed between a first and a second configuration to respectively allow passage of a substance and blocking of the substance, the shape-memory separator placed adjacent to at least one surface of the first ion exchange membrane.

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First Claim