PROBLEM TO BE SOLVED: To provide an apparatus and a method for creating an anatomical space by an elongated balloon which gradually expands along its length. A balloon incision device assembly 10 comprises a balloon incision device having an elongated shaft 144, a handle 142 arranged in a proximal portion of the elongated shaft, and an incision balloon 146 supported in a distal portion of the elongated shaft. Including. The incision balloon is a contracted state in which the incision balloon contains a first diameter between the proximal and distal ends, and an incision balloon in an inflated state in which the incision balloon contains a second diameter between the proximal and distal ends. Includes a substantially cylindrical shape with a plurality of intermediate states in which the balloon gradually transitions from the proximal end to the distal end from the contracted state to the expanded state. [Selection diagram] Fig. 1【課題】その長さに沿って漸進的に膨張する細長いバルーンにより解剖学的空間を生成するための装置および方法を提供する。【解決手段】バルーン切開器具アセンブリ１０は、細長いシャフト１４４と、細長いシャフトの近位部分に配置されたハンドル１４２と、細長いシャフトの遠位部分に支持された切開バルーン１４６とを有するバルーン切開器具を含む。切開バルーンは、切開バルーンが近位端と遠位端との間に第１の直径を含む収縮状態と、切開バルーンが近位端と遠位端との間に第２の直径を含む膨張状態と、バルーンが収縮状態から膨張状態へと近位端から遠位端に漸進的に移行する複数の中間状態とを有する実質的に円筒形の形状を含む。【選択図】図１
