PROBLEM TO BE SOLVED: To prevent easy liquid leakage and to prevent damage of each artery when infusing a cardioplegic solution into a coronary artery with heartbeat temporarily stopped or infusing liquid for preventing spinal cord damage into an intercostal artery on aortic valve replacement.SOLUTION: A flange 5 is provided on the downstream end in a liquid flow direction of a tube member 2 through which the liquid is induced. A contact member 3 made of a foamed resin material is provided on the flange 5. A through-hole 6 communicating with a flow channel 4 of the tube member 2 is provided on a contact member 3. A contact surface 7 of the contact member 3 is brought into contact with inner membrane tissue around an opening C on a central side of the coronary artery so as to seal a space between the tube member 2 and the coronary artery A when infusing the cardioplegic solution into the coronary artery A. The contact surface 7 of the contact member 3 is brought into contact with inner membrane tissue around an opening on a central side of the intercostal artery so as to seal a space between the tube member 2 and the intercostal artery when infusing the liquid for preventing spinal cord damage into the intercostal artery.COPYRIGHT: (C)2007,JPO&INPIT【課題】 拍動を一時停止させた心臓の冠動脈に心筋保護液を注入する場合や、大動脈置換術の際に肋間動脈に脊髄の損傷を抑制する液体を注入する場合に、液体を洩れ難くするとともに各動脈の損傷を抑制する。【解決手段】 液体が導入される管部材2の液体流れ方向下流端にフランジ5を設ける。フランジ5に発泡樹脂材からなる接触部材3を設ける。接触部材3に管部材2の流路4と連通する貫通孔6を形成する。冠動脈Aに心筋保護液を注入する場合、接触部材3の接触面7を冠動脈の中枢側開口部C周囲の内膜組織に接触させ、管部材2と冠動脈Aとの間をシールする。肋間動脈に脊髄の損傷を抑制する液体を注入する場合、接触部材3の接触面7を肋間動脈の中枢側開口部周囲の内膜組織に接触させ、管部材2と肋間動脈との間をシールする。【選択図】 図2
