MEDICAL FIXED BALLOON, ACTUATOR FOR INTRADUCTAL MOVING BODY, AND ENDOSCOPE

摘要

A medical fixed balloon disposed in an insertion portion to be inserted into a body cavity so as to fix the insertion portion to the inside of the body cavity, comprising: an inflation membrane inflated by supplying a fluid into an inside of the inflation membrane and whose outer peripheral surface is brought into contact with an inner wall of the body cavity, the inflation membrane having regions extended with a predetermined extension rate and having a plurality of low extension regions of a lower extension rate than the predetermined extension rate, formed on a line segment from a base end to a distal end along an insertion axis of the insertion portion.