PROBLEM TO BE SOLVED: To provide a high frequency heating balloon catheter that surely eliminates a temperature gap between an upper part and a lower part due to convection heat in a balloon, evenly heats tissue in contact with the balloon at an optimum temperature, and safely gives thermal therapy to a lesion.SOLUTION: The high frequency heating balloon catheter includes: a catheter shaft (4) comprising an outer cylindrical shaft (2) and an inner cylindrical shaft (3) a balloon (6) having such a shape that it can be brought into contact with a target lesion (5) while inflated and installed between the distal end part of the outer cylindrical shaft and the vicinity of the distal end part of the inner cylindrical shaft a high frequency energizing electrode (7) capable of transmitting high frequency power and disposed inside the wall of the balloon or inside the balloon a lead wire connected electrically to the high frequency energizing electrode a temperature sensor (8) capable of monitoring temperature inside the balloon and vortex forming means (12:16 and 20) for swirling a fluid in the balloon between the upper and lower parts and forming vortexes in order to eliminate the temperature gap between the upper and lower parts in the balloon due to convection heat in the fluid introduced into the balloon.COPYRIGHT: (C)2012,JPO&INPIT【課題】バルーン内の対流熱による上下間温度格差を確実に解消でき、バルーンと接触する組織を均一に至適温度で加温して、患部を安全に温熱治療する高周波バルーンカテーテルを提供する。【解決手段】高周波加温バルーンカテーテルは、外筒シャフト(1)と内筒シャフト(2)とからなるカテーテルシャフト(3)と、膨張した状態で標的病変部(41)に接触可能な形状を有する外筒シャフトの先端部と内筒シャフトの先端部近傍との間に設置されたバルーン(4)と、高周波電力を伝送可能なバルーンの壁内又はバルーン内に配設された高周波通電用電極(6)と、高周波通電用電極に電気的に接続されるリード線(7)と、バルーン内の温度をモニター可能な温度センサー(8)と、バルーン内に導入された流体内に対流熱によりバルーン内の上下間に形成される上下間温度格差を解消するように、前記バルーン内の流体を前記上下間で旋回させ渦を形成する渦形成手段(12:16、20)と、を備えることを特徴とする。【選択図】図1
