The medical electrical stimulation electrode includes a connection end portion which is formed in a closed loop shape by bending a linear elastic body and has a connection end portion in which both end portions of a linear elastic body are connected and a connection end portion in which linear elastic bodies are separated from the connection end portion A pair of first linear portions extending in the extending direction of the pair of first linear portions and a second linear shape having at least one bent portion at the middle between both ends of the pair of first linear portions, A stimulating electrode unit disposed on at least one of the plurality of elastic members to provide electrical stimulation through the inner wall of the blood vessel And a lead portion extending linearly and having a connecting end portion of the plurality of elastic members connected to the distal end member and having a wiring inserted therein.医療用電気刺激電極は、線状の弾性体を曲げて閉ループ状に形成され、線状の弾性体の両端部が連結された連結端部と、連結端部から線状の弾性体が互いに離間して延ばされた一対の第1線状部と、一対の第1線状部の延在方向の先端にそれぞれ両端が接続され、両端の中間に少なくとも一つの折り曲げ部を含む第2線状部と、がそれぞれ形成された複数の弾性部材を有する弾性支持体と、血管の内壁を通して電気刺激を与えるため、複数の弾性部材の少なくとも一つに配置された刺激電極部と、刺激電極部に電気的に接続された配線と、線状に延ばされ、先端部材に複数の弾性部材の連結端部がそれぞれ接続され、内部に配線が挿通されたリード部と、を備える。
