PROBLEM TO BE SOLVED: To realize semipermanent continuation of operation without replacing a battery.SOLUTION: An iontophoresis apparatus 1 to be provided comprises: a chemical tank 2 that stores a medical solution including an ionic drug and has a window part 4c allowing the drug to pass through a fuel tank 3 that stores liquid fuel including fuel molecules and has a window part 4c allowing glucose to pass through a first electrode 5 that has a first region 5a to be arranged in the chemical tank 2 and also has a second region 5b exposed to air for reducing oxygen in the air a second electrode 6 that is arranged in the fuel tank 3 and oxidizes the fuel molecules and an ion exchange membrane 7 that is interposed between the second region 5b of the first electrode 5 and the second electrode 6 and transmits an anion generated through the oxygen reduction from the second region 5b to the second electrode 6.COPYRIGHT: (C)2014,JPO&INPIT【課題】電池交換をせずとも半永久的に作動し続ける。【解決手段】イオン性の薬剤を含む薬液を収容し、薬剤が通過可能な窓部4cを有する薬液槽2と、燃料分子を含む燃料液を収容し、グルコースが通過可能な窓部4dを有する燃料槽3と、薬液槽2に配置される第1の領域5aと、大気に露出されて該大気に含まれる酸素を還元する第2の領域5bとを有する第1の電極5と、燃料槽3に配置され燃料分子を酸化する第2の電極6と、第1の電極5の第2の領域5aと第2の電極6との間に介在し、酸素の還元により生成され陰イオンを第2の領域5aから第2の電極6に伝達するイオン交換膜7とを備えるイオントフォレーシス装置1を提供する。【選択図】図2