To provide a balloon catheter for IABP that is minimally invasive and can control body temperature with high efficiency. A catheter tube 2 to be inserted into the aorta, an IABP balloon 3 provided near the distal end of the catheter tube 2, and a portion of the catheter tube 2 in the extending direction, and circulates outside thereof. And a heat exchange balloon 4 for exchanging heat between the blood to be heated and the temperature control fluid flowing inside the blood. The catheter tube 2 includes a pressure fluid conduction path that conducts a pressure fluid that expands and contracts the IABP balloon 3, a temperature regulation fluid supply path 24 that supplies a temperature regulation fluid to the heat exchange balloon 4, and a heat And a temperature adjustment fluid discharge passage 25 for discharging the temperature adjustment fluid heat-exchanged by the exchange balloon 4. [Selection] Figure 1【課題】低侵襲で、体温の制御を高効率的に行い得るＩＡＢＰ用バルーンカテーテルを提供すること。【解決手段】大動脈に挿入されるカテーテル管２と、カテーテル管２の遠位端近傍に設けられたＩＡＢＰ用バルーン３と、カテーテル管２の延在方向の一部に設けられ、その外側を流通する血液とその内側を流通する温調流体との間で熱交換する熱交換用バルーン４とを備える。カテーテル管２は、ＩＡＢＰ用バルーン３を膨張および収縮させる圧力流体を導通させる圧力流体導通路と、熱交換用バルーン４に温調された温調流体を供給する温調流体供給路２４と、熱交換用バルーン４で熱交換された温調流体を排出する温調流体排出路２５とを有する。【選択図】図１
