Esophageal dilator with adjustable hole enlargement

The utility model discloses an esophageal dilator with adjustable hole enlargement, still include the water pocket pipe, it inserts in the water pocket pipe to annotate liquid pipe front end, and cooperate with the water pocket pipe friction is sealed, the cover is gone up to the water pocket pipe has a water pocket group, water pocket group comprises the water pocket that the several wrapped up in proper order, the water pocket size is reduced to interior by outer in proper order, the water pocket pipe passes from the long axis of every water pocket, and with every water pocket fixed connection, offer the water filling hole that quantity is the same with water pocket quantity on the water pocket pipe, every water filling hole with and only with water pocket inner chamber intercommunication, notes liquid pipe front end inserts the part of water pocket pipe and offers the connecting hole that quantity is the same with water filling hole quantity, it is the cecum to annotate liquid pipe front end, the rear end