公开(公告)号：US20210113226A1

公开(公告)日：2021-04-22

申请号：US17131880

申请日：2020-12-23

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B17/221 ,  A61B17/00

Abstract: An endoscope treatment tool includes: a sheath; an operating wire in the sheath; a gripping portion provided at a distal end of the operating wire and having one or more wires; a tip attached to a distal end of the sheath; and a resin member disposed at a position adjacent to the tip on a radially inner or outer side thereof, wherein the tip includes clearance grooves extending toward a proximal end of the tip from a distal end of the tip, passing therethrough from an inner circumferential surface of the tip to an outer circumferential surface of the tip, and having sizes enabling the wires to pass therethrough, and at least proximal-end sides of the grooves overlap with the member in a radial direction of the tip and a distal end of the member is disposed farther on a distal-end side than proximal ends of the grooves are.

公开(公告)号：US20210015349A1

公开(公告)日：2021-01-21

申请号：US17063006

申请日：2020-10-05

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B1/018 ,  A61B1/005

Abstract: A medical device includes: a sheath; a first bending portion provided at a distal end side of the sheath; a second bending portion provided between the first bending portion and the sheath; a first wire fixed to a first wire fixing portion provided at a distal end side of the first bending portion and inserted in the sheath toward a proximal end side of the sheath; and a second wire fixed to a second wire fixing portion provided between the first bending portion and the second bending portion and inserted in the sheath toward the proximal end side of the sheath, wherein a part of the first wire positioned in the first bending portion and a part of the first wire positioned in the second bending portion have straightness, and at least a part of the second wire positioned in the second bending portion has straightness.

公开(公告)号：US20170156745A1

公开(公告)日：2017-06-08

申请号：US15440004

申请日：2017-02-23

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B17/221

CPC classification number: A61B17/221 ,  A61B2017/00845 ,  A61B2017/00853 ,  A61B2017/2212 ,  A61B2017/2215 ,  A61B2017/2905

Abstract: An endoscope treatment tool includes: a tubular sheath member insertable into a channel of an endoscope; a wire inserted into the interior of the member in such a manner that the wire can be advanced/retracted in the longitudinal direction of the member; and a distal-end treating portion provided at the distal end of the wire and made to protrude from/be pulled into a distal-end opening in the member by advancing/retracting the wire, wherein the member is configured having a two-layer structure in which a metal coil and a resin tube are layered in the radial direction and secured to each other, in the coil, lateral cross-sectional shapes of portions of a strand that are adjacent to each other in the longitudinal direction have complementary depression and protrusion that are brought into tight contact with each other, and the tube has a flexural rigidity greater than that of the coil.

公开(公告)号：US20180317945A1

公开(公告)日：2018-11-08

申请号：US16037000

申请日：2018-07-17

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA ,  Hiroyuki MORISHITA

IPC: A61B17/221 ,  A61B1/00

CPC classification number: A61B17/221 ,  A61B1/00085 ,  A61B1/00087 ,  A61B1/00133 ,  A61B2017/0034 ,  A61B2017/2217

Abstract: An endoscope treatment tool includes: a sheath having a lumen; a basket section protruding from the lumen and having an elastic wire; and an operating wire. The elastic wire has: a maximum section where the outer diameter of the basket section is largest of the elastic wire; a first section that, in a lateral view from a direction orthogonal to a normal from the maximum section to the central axis of the basket section, is largest on the opposite side of the central axis from the maximum section between the maximum section and the proximal end; and a second section that is largest at a position away from the normal between the maximum section and the first section, and in the front view, the first section is located on the opposite side of a straight line orthogonal to the normal at the central axis from the maximum section side.

公开(公告)号：US20180280042A1

公开(公告)日：2018-10-04

申请号：US15997857

申请日：2018-06-05

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B17/221 ,  A61B17/00

CPC classification number: A61B17/221 ,  A61B17/00234 ,  A61B2017/00358 ,  A61B2017/00818 ,  A61B2017/00862 ,  A61B2017/22062 ,  A61B2017/22069 ,  A61B2017/2212 ,  A61B2017/2215

Abstract: An endoscope treatment tool includes: a sheath having a lumen; a basket portion being configured to protrude from the lumen and formed of at least one elastic wire; and a manipulation wire causing the basket portion to be moved, wherein the elastic wire has a maximum-outer-diameter portion between distal and proximal ends of the elastic wire and a largest portion that, between the maximum-outer-diameter portion and the proximal end of the elastic wire, reaches the maximum size in an opposite direction from maximum-outer-diameter portion in a side view from a direction orthogonal to a perpendicular line drawn to a center axis from the maximum-outer-diameter portion, and wherein, in a front view of the basket portion, the largest portion is positioned on an opposite side from the side of the maximum-outer-diameter portion with respect to a straight line that is orthogonal to the perpendicular line on the center axis.

公开(公告)号：US20170252052A1

公开(公告)日：2017-09-07

申请号：US15599845

申请日：2017-05-19

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B17/221 ,  A61B1/00

CPC classification number: A61B17/221 ,  A61B1/00085 ,  A61B2017/00323 ,  A61B2017/0034 ,  A61B2017/2212 ,  A61B2090/08021

Abstract: An endoscopic treatment instrument includes a sheath; a basket section formed by elastic wires; a manipulation wire connected to the basket section; and a distal end cover attached to a distal end of the sheath. The distal end cover has: a first opening; a second opening; an inner peripheral surface disposed between the first and second opening; and a curved surface bent over the whole circumference in the circumference direction of the distal end cover. Each of the plurality of the elastic wires has: a proximal end portion, a distal end portion, and a maximum diameter section. A radius of curvature of the curved surface is smaller than a radius of curvature of each of the plurality of the elastic wires. A contact position of the elastic wires and the curved surface moves in accordance with a retraction of the elastic wires.

公开(公告)号：US20170112516A1

公开(公告)日：2017-04-27

申请号：US15400781

申请日：2017-01-06

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu OKADA

IPC: A61B17/221 ,  A61B17/22

CPC classification number: A61B17/221 ,  A61B17/22031 ,  A61B2017/00477 ,  A61B2017/22035 ,  A61B2017/2212

Abstract: A binding part of a basket-type grasping forceps includes: a first binding part to which proximal ends of first wires that are some of a plurality of basket wires are fixed; and a second binding part to which proximal ends of second wires not connected to the first binding part among the plurality of basket wires are fixed, which is engaged with the first binding part to be separable from the first binding part, is containable inside a sheath along with the first binding part in a state in which the second binding part is engaged with the first binding part, and is held by an inner surface of the sheath to be inseparable from the first binding part in the sheath.