BALLOON CATHETER SYSTEMS

A balloon catheter and balloon system particularly useful with drug-coated balloons is described. In some embodiments, the balloon catheter system includes various features designed to address problems with drug rubbing off due to contract friction during delivery of the balloon - including by utilizing a protective sleeve to shield the drug-coated balloon. In some embodiments, the balloon catheter system includes an inner high-pressure balloon and an outer drug-coated balloon to mitigate the time associated with performing vessel dilation. 描述了一种特别适用于药物涂覆的气囊的气囊导管和气囊系统。在一些实施例中，气囊导管系统包括各种特征，这些特征被设计用于解决由于气囊递送期间的收缩摩擦导致的药物摩擦掉的问题--包括通过利用保护套管来遮蔽药物涂覆的气囊。在一些实施例中，气囊导管系统包括内高压气囊和外药物涂覆的气囊，以减少与进行血管扩张相关的时间。