PROBLEM TO BE SOLVED: To provide an electrode structure for enzyme sensors, having a working electrode provided with an enzyme layer having a uniform layer thickness and a prescribed area, and an enzyme sensor provided with the electrode structure for enzyme sensors, and to provide an artificial pancreas device having the enzyme sensor.SOLUTION: In the electrode structure for enzyme sensors provided with the working electrode and a reference electrode on a substrate, the working electrode includes an electrode layer formed on the substrate, an enzyme layer formed on the electrode layer, and a dam part for surrounding the electrode layer and the enzyme layer. The dam part is formed, in such a way as to hold an enzyme solution as horizontally maintaining the surface of the enzyme solution when the enzyme solution, a raw material of the enzyme layer, is housed in the dam part prior to the formation of the enzyme layer and the enzyme sensor has the electrode structure for enzyme sensors, and the artificial pancreas device has the enzyme sensor.COPYRIGHT: (C)2011,JPO&INPIT【課題】均一な層厚を有する所定面積の酵素層を備えた作用極を有する酵素センサ用電極構造体、この酵素センサ用電極構造体を備えた酵素センサ、この酵素センサを有する人口膵臓装置の提供。【解決手段】基板上に作用極及び参照極を備えて成る酵素センサ用電極構造体であって、前記作用極は、前記基板上に形成された電極層と、前記電極層上に形成された酵素層と、前記電極層及び前記酵素層を囲繞する堰堤部とを備え、前記堰堤部は、前記酵素層を形成する以前において前記酵素層の原料である酵素溶液をこの堰堤部に収容したときにその酵素溶液の表面を水平に維持しつつその酵素溶液を保持可能に形成して成ることを特徴とする酵素センサ用電極構造体、それを有する酵素センサ、及び人口膵臓装置。【選択図】図3
