PROBLEM TO BE SOLVED: To provide a medical electrostimulation electrode which has an energization force enough to make the medical electrostimulation electrode indwelt within a blood vessel for a prolonged period of time and is hardly caught in a blood vessel wall, etc., when extracted from a blood vessel and also to provide a medical electrostimulation apparatus including such a medical electrostimulation electrode.SOLUTION: The medical electrostimulation electrode comprises: a lead part 3 an electrode part 10 arranged at the distal end of the lead part 3 and diameter-reducible smaller than the outer diameter of the lead part 3 and diameter-expandable larger than the outer diameter of the lead part 3 a wiring part 6 inserted into the lead part 3 and connected to the electrode part 10 and an operation wire 5 inserted into the lead part 3 and advancing and retracting the electrode part 10 in a direction of the centerline of the lead part 3 relative to the lead part 3.COPYRIGHT: (C)2016,JPO&INPIT【課題】血管内に長期的に留置可能な十分な付勢力を有し且つ血管からの抜去時に血管壁などに引っかかりにくい医療用電気刺激電極及び医療用電気刺激装置を提供すること。【解決手段】筒状のリード部3と、リード部3の遠位端部分に配されリード部3の外径より小さく縮径可能でありリード部3の外径よりも大きく拡径可能である電極部10と、リード部3の内部に挿通され電極部10に接続された配線部6と、リード部3の内部に挿通されリード部3の中心線方向にリード部3に対して電極部10を進退させる操作ワイヤ5と、を備える。【選択図】図2
