| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope for a gastric fistula catheter that can prevent buckling and collapse of a portion of an insertion part, while eliminating a gap between the portion of the insertion part and the gastric fistula catheter, by deforming the portion of the insertion part in an enlarged diameter direction.SOLUTION: An insertion part 20 extends from an operation part 11, and can be inserted and removed to/from a gastric fistula catheter 40. The insertion part includes: a tip rigid part 24 constituting an end part at the side opposite to the operation part; a curved part 25 curved according to the operation of curving operation means 14 provided in the operation part connected to the tip rigid part; a first flexible tube 21 connected to the operation part; a second flexible tube 26 connected to the end part at the side opposite to the tip rigid part of the curved part; a non-deformable pipe member 29 for connecting the first flexible tube with the second flexible tube; and a radial direction variable body 28 constituting a sheath of a portion positioned between the first flexible tube and the second flexible tube of the insertion part mounted on an outer circumferential surface of the pipe member, and having air tightness and capable of varying a radial dimension. |
