Olympus Medical Systems Corporation

Olympus Corporation

Terumo Kabushiki Kaisha

Kousuke Motai

Junichi Kobayashi

Tsutomu Okada

Yasuhito Kura

Yoshio Onuki

Satoshi Miyamoto

Takehiro Nishiie

Yasushi Kinoshita

Tadashi Kousai

Junichi Muramatsu

Yasuyuki Kuroda

An endoscope system includes: an endoscope including an elongated insertion portion provided with a bendable bending portion, the insertion portion being inserted into a duodenum; and a first balloon to a fourth balloon for moving a one-side surface of a distal end portion located nearer to a distal end side than the bending portion in the insertion portion in parallel with respect to a field of view direction S of an objective lens which is a diameter direction of the insertion portion, separately from bending of the bending portion, the one-side surface being located in a circumferential direction along an insertion direction W of the insertion portion and parallel to a central axis P of the insertion portion.

Endoscope system, endoscope, supporting member, and method of using endoscope system

With a first endoscope inserted through an overtube, the overtube is orally inserted into an object being examined, and a distal end portion of an insertion tube of the first endoscope is made to advance, within the object, from a jejunum via a jejunum-to-jejunum anastomosed portion and a jejunum-anastomosed bent portion so that the distal end portion is located adjacently to a Vater's papilla of a duodenum. The overtube is then sent to a position which is adjacent to the Vater's papilla along the insertion tube of the first endoscope. After this, the first endoscope is pulled from the overtube. A second endoscope is then inserted into the overtube to make a distal end portion of its insertion tube protrude from the distal end of the overtube and is located adjacently to the Vater's papilla. The second endoscope thus-approached is used to treat the Vater's papilla and the tissue therearound.

Therapeutic method that uses overtube

Growing community of inventors

Hachioji, Japan

Kousuke Motai