Vent cap for a eustachian tube dilation system

A device and method for dilating a Eustachian tube of a patient is disclosed. The device includes a guide catheter and a balloon dilation catheter. The balloon dilation catheter has an actuator that prevents injury to the middle ear. The balloon dilation catheter is slidably coupled with the guide catheter through the guide catheter lumen and is fully inserted into the guide catheter lumen when the distal side of the actuator is adjacent to the proximal end of the guide catheter. The method involves advancing the guide catheter and balloon dilation catheter through a nasal passage of the patient to dilate a portion of the Eustachian tube. 本发明公开了种用于扩张患者的咽鼓管的装置和方法。该装置包括引导导管和球囊扩张导管。球囊扩张导管具有致动器，该致动器防止对中耳的损伤。球囊扩张导管能够穿过引导导管管腔与引导导管滑动地联接并且在致动器的远侧侧面邻近引导导管的近侧端部时完全插入引导导管管腔中。该方法涉及推进引导导管和球囊扩张导管穿过患者的鼻腔通道以扩张咽鼓管的部分。