Indwell dilator for treating achalasia of cricophyaryngeus muscles

The invention discloses an indwell dilator for treating achalasia of cricophyaryngeus muscles. The indwell dilator comprises an expandable sacculus and a gastric tube, wherein the expandable sacculusis mounted on the gastric tube in a sleeving manner; a first through hole and a second through hole are separately formed in the left side and the right side of the inner side wall of the expandable sacculus; the two through holes are formed in the near end of the gastric tube through an opening of a connecting tube arranged in the gastric tube wall; a pressure monitoring mechanism is mounted above the first through hole; and an injection mechanism is mounted above the second through hole. The indwell dilator for treating the achalasia of cricophyaryngeus muscles disclosed by the invention solves the following problems: in a conventional treatment course of the achalasia of cricophyaryngeus muscles, repeated draw-out and insertion of the gastric tube are required when expansion treatment is carried out by using th