Olympus Corporation

Olympus Medical Systems Corporation

Other

Yasuhiro Tabuchi

Tetsuya Yamamoto

Yuya Hidaka

Megumi Kimura

Naohisa Yahagi

Yohei Yoshida

Yukio Sato

An endoscope treatment tool includes: a cylindrical cap attached to an outer side of a distal-end section of an endoscope and having first and second radial directions intersecting each other; a treatment tool supported at an outer side of the cap in the first radial direction to be movable in the longitudinal direction; and a linear flexible coupling member coupling the treatment tool with the cap such that the grasper reaches a position where the grasper protrudes from a distal end of the cap. A swing section of the coupling member couples the cap with the treatment tool to allow relative movement in the second radial direction, and, in response to pressed forward in the longitudinal direction by the treatment tool, swings about a swing axis extending in the second radial direction while generating a tensile force and bending the treatment tool inward in the first radial direction.

Endoscope treatment tool and endoscope system

The disclosed technology is directed to a medical instrument for endoscopic use. The medical instrument comprises an elongated open ended over tube configured to receive an endoscope in a direction along a longitudinal central axis of the over tube. The endoscope travels retractably from a distal end of the over tube. A tube is disposed concentrically outwardly of the over tube so that a treatment tool is inserted through the tube and is projected forwardly with respect to the over tube from a distal end of the tube. A balloon is disposed on an external surface of the over tube and is expandable outwardly in a radial direction of the over tube.

Medical instrument for endoscopic use

The disclosed technology is directed to a method of operating a treatment tool for excising a lesioned portion of a body tissue. The method comprises applying a treatment tool to the lesioned portion. The treatment tool includes an elongated sheath having a snare wire disposed therein. The snare wire is configured to be movable forward or backward along a longitudinal direction. Next, forming the snare wire into a loop and tilting the loop in a plane transverse to the longitudinal axis of the elongated sheath with a force tending to push a snare wire portion out of a distal-end opening of the elongated sheath. And finally, placing the loop around the lesioned portion of the body tissue to excise the lesioned portion in a state in which the snare wire positioned transverse to the lesioned portion.

Method of operating a treatment tool

An endoscope treatment tool includes a sheath having electric insulation; and an electrode unit provided at a distal end portion of the sheath. The electrode unit includes a rod-shaped electrode that is provided to extend in an axis direction of the sheath and is capable of being arranged in a state where the electrode protrudes from the distal end portion of the sheath and is exposed to the outside; and a chip that is fixed in a state where a distal end portion of the electrode is inserted into a concave portion provided in a proximal end surface so as to extend in the axis direction, has a greater external diameter than the external diameter of the electrode, and is formed from a single electric insulation material. The concave portion is formed with a smaller-diameter portion that allows the distal end portion of the electrode to be inserted thereinto.

Endoscope treatment tool

A marker to be attached to an endoscopic treatment tool for precisely directing a tip of the treatment tool to a target site with no additional physical burden to the patient is provided. A markerused in an endoscopic treatment tool to be inserted in a guide sheath, the marker including: a bodyand a tip sectionA for removably fixing the bodyto a middle section of the endoscopic treatment tool, wherein the distance between the bodyand a tip of the endoscopic treatment tool can be determined freely.

Marker and guide sheath system for endoscopic treatment tool

Provided is a treatment tool including: an elongated member which is formed of a flexible material and includes first and second terminals; a first body portion which is fixed to the first terminal so as to function in a target; a handle portion which is provided in the second terminal and is provided with a rotating holding portion holding the elongated member so as to be rotatable about the axis of the elongated member; and a second body portion which is attached to the handle portion so as to function in a target and is rotated relative to the elongated member when rotating the handle member relative to the elongated member. The treatment tool is capable of performing a cleaning treatment or the like while curtailing extraneous matter from being scattered in the vicinity thereof and reducing contamination thereof.

Growing community of inventors

Tokyo, Japan

Yasuhiro Tabuchi