Olympus Corporation

Other

Japan Science and Technology Agency

Inoue, Haruhiro

Hiroki Kuriki

Fumihito Arai

Haruhiro Inoue

Yoko Yamanishi

Shinya Sakuma

An endoscopic surgical device includes: a sheath; a forceps section protruding from a cover provided at a distal end of the sheath and including a pair of openable-closable forceps components; an operable member that is connected to a proximal end of the forceps section, that opens the forceps components when moved forward in a longitudinal direction, and that closes the forceps components when moved rearward; and a flow-path formation member having a through-hole through which the operable member extends and having a first liquid delivery hole constituted by a gap between the through-hole and the operable member and a second liquid delivery hole constituted by a gap between the flow-path formation member and an inner peripheral surface of the cover. The operable member is provided with a large-diameter section that abuts on the flow-path formation member when the operable member is moved forward to block the first liquid delivery hole.

Endoscopic surgical device

Provided is an endoscopic surgical device includes: a sheath having a pipe for delivering a liquid and inserted into a channel of an endoscope; a pair of forceps components disposed so as to protrude from a distal end cover of the sheath; an operable member that is connected to the forceps components and opens and closes the forceps components; and a flow-path formation member positioned at proximal end side rather than the forceps components and is disposed in a rotatable manner about a central axis of the sheath together with the forceps components. The flow-path formation member includes a recess disposed in a direction orthogonal to an opening-closing direction of the forceps components and recessed radially inward. The recess forms a gap between the flow-path formation member and an inner peripheral surface of the distal end cover so as to constitute a liquid delivery hole.

Growing community of inventors

Tokyo, Japan

Hiroki Kuriki