PROBLEM TO BE SOLVED: To provide an electric stimulation unit capable of keeping stable indwelling against body motion or movement in respiration of a patient.SOLUTION: An electric stimulation unit 1 comprises: a plurality of energization means 15 to be positioned at a predetermined position in a blood vessel a pair of electrodes 13, 14 formed in at least one energization means 15 a lead part 11 which is connected to the pair of electrodes 13, 14 and makes an electric signal be conducted a hardness variable member 18 which is accommodated inside the lead part 11 and whose hardness reversibly varies and a hardness reversible adjustment member 19 for varying hardness of the lead part 11 by cooperating with the hardness variable member 18.COPYRIGHT: (C)2015,JPO&INPIT【課題】患者の体動や呼吸時の変動に対して安定した留置を維持することができる電気刺激ユニットを提供する。【解決手段】電気刺激ユニット1は、血管内の所定値に位置決めされる複数の付勢手段15と、少なくとも一つの付勢手段15に形成された一対の電極対13、14と、電極対13、14に接続され、電気信号を導通させるリード部11と、リード部11の内部に収容され、可逆的に硬度が変化する硬度可変部材18と、硬度可変部材18に協働してリード部11の硬度を変更する硬度可変調整部材19とを備える。【選択図】図1
