New drug-delivery balloon catheter for easy and fast injection of triamcinolone after esophageal endoscopic submucosal dissection

Esophageal endoscopic submucosal dissection (ESD) is a very common and useful endoscopic treatment for superficial esophageal cancer [1]. The most common delayed adverse event of esophageal ESD for extensive lesions is stenosis [2]. Local injection of triamcinolone is the most common form of stenosis prevention [3], and the method using a needle is a rather complicated and time-consuming procedure. A new drug-delivery balloon catheter is a device with multiple micro holes on its surface that eject fluid from the balloon when the balloon pressure rises.