Bronchial Filler EWS Born from the Passion of a Doctor

There is a medical device as small as a pinky fingernail called the Endobronchial Watanabe Spigot (EWS). This small device, developed by the late Dr. Yoichi Watanabe, currently saves the lives of many patients. This is the story of how the Medical Team took on the challenge of overcoming major obstacles that blocked their attempt to popularize EWS.