Patent ID: 11918415
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A balloon-assisted ultrasound endoscope, comprising:
an operation portion for operating the ultrasound endoscope;
an insertion portion coupled to the operation portion and to be inserted into a subject to be examined;
a distal end portion coupled to the insertion portion and including a projecting portion and a distal end body portion;
a balloon channel disposed inside the insertion portion and extending from the operation portion to the distal end portion; and
a balloon mounting portion between the projecting portion and the distal end body portion and configured to mount a balloon to cover the projecting portion,
wherein the balloon channel includes a bending portion in the distal end portion, and a balloon channel outlet that is connected to the bending portion,
wherein a cross section of the bending portion includes a first bending angle and a second bending angle, and the first bending angle is smaller than the second bending angle, such that the balloon channel outlet is widened outwardly,
wherein the balloon mounting portion includes a groove,
wherein the groove includes a first partition wall, a second partition wall, and a groove bottom portion between the first partition wall and the second partition wall, where the first partition wall separates the groove bottom portion from the projecting portion and the second partition wall separates the bottom portion from the distal end body portion, and
wherein a mouth of the balloon channel outlet extends from a position distal of the first partition wall into the projecting portion.