US 8,801,708 B2Granted

Endoscopic-use treatment instrument

AssigneeOlympus Medical Systems Corp.

InventorYuta Muyari

Life of this patent

Estimating the term…

Loading patent…

Abstract

An endoscopic-use treatment instrument includes: a wire; an Y-shaped knife formed by a flexible material and is disposed at the distal end of the wire and used for treatment conducted in a body cavity; a flexible sheath having the wire passing therethrough; an operation section provided to the proximal end of the wire and capable of rotating the wire around an axial line; a cylindrical bearing fixed to the distal end of the sheath; a rotative member inserted into the bearing and capable of freely rotating relative to the bearing; and a regulator section provided to the rotative member and regulating the rotation of the treatment member relative to the rotative member around the axial line. The rotation of the Y-shape knife relative to the rotative member around the axial line is regulated when the Y-shape knife makes contact with the regulator section.

Claims4

Dependent claims

An endoscopic-use treatment instrument, comprising:

a wire;
a treatment member formed by a flexible material, the treatment member being disposed at a distal end of the wire and used for treatment conducted in a body cavity;
a flexible sheath having the wire passing therethrough;
an operation section provided to a proximal end of the wire and capable of rotating the wire around an axial line;
a cylindrical bearing fixed to a distal end of the flexible sheath;
a rotative member inserted into the cylindrical bearing and capable of freely rotating relative to the bearing;
and
a regulator section provided to the rotative member and regulating rotation of the treatment member relative to the rotative member around the axial line, wherein
the treatment member is urged to expand outward in a radial direction of the flexible sheath when the treatment member is exterior to the flexible sheath, and the rotation of the treatment member relative to the rotative member around the axial line is regulated when the treatment member makes direct contact with the regulator section.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/208,400Filed 11 Sep 2008
Priority: JP P2007-24136618 Sep 2007
Published: US 2009/0076319 A119 Mar 2009
Granted: 12 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61B 18/1492
Probes or electrodes therefor: having a flexible, catheter-like structure, e.g. for heart ablation
A61B 2017/2212
Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions: having a closed distal end, e.g. a loop
A61B 2017/2929
The angular position of the head being adjustable with respect to the shaft: with a head rotatable about the longitudinal axis of the shaft
A61B 2018/00482
For treatment of particular body parts: digestive system