PROBLEM TO BE SOLVED: To provide an IABP driver capable of securely preventing the problem of interruption of power supply at the time of switching a battery.SOLUTION: A balloon catheter to which a balloon is connected is attached to an IABP driver that expands and contracts the balloon. The IABP driver includes: a first and second batteries for supplying power； a power-supplied unit that is driven by receiving power supplied from the first and second batteries； a battery detection unit that detects a battery voltage which is a voltage of the first battery, and voltage drop speed of the first battery； and a battery control unit for controlling connection between the power-supplied unit and the first and second batteries. The battery control unit, when the battery voltage and voltage drop speed detected by the battery detection unit satisfies a predetermined condition, performs switching control of changing a power supply source to the power-supplied unit from the first battery to the second battery.SELECTED DRAWING: Figure 1【課題】 バッテリの切り替え時に電力供給が中断する問題を確実に防止し得るＩＡＢＰ駆動装置。【解決手段】 バルーンが接続されたバルーンカテーテルを取り付け、前記バルーンを膨張及び収縮させるＩＡＢＰ駆動装置であって、電力を供給する第１バッテリ及び第２バッテリと、前記第１バッテリ及び前記第２バッテリから電力の供給を受けて駆動される被電力供給部と、前記第１バッテリの電圧であるバッテリ電圧と、前記第１バッテリの電圧降下速度とを検出するバッテリ検出部と、前記第１バッテリ及び前記第２バッテリと前記被電力供給部との接続を制御するバッテリ制御部と、を有し、前記バッテリ制御部は、前記バッテリ検出部で検出された前記バッテリ電圧と前記電圧降下速度とが所定の条件を満たす場合に、前記被電力供給部への電力供給元を前記第１バッテリから前記第２バッテリに変更する切替制御を行うことを特徴とするＩＡＢＰ駆動装置。【選択図】図１
