公开(公告)号：US20170128188A1

公开(公告)日：2017-05-11

申请号：US15416280

申请日：2017-01-26

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke NOMURA ,  Toshihiro YAMAGATA ,  Madoka KIYOKAWA

IPC: A61F2/04 ,  A61F2/94 ,  A61F2/848

CPC classification number: A61F2/04 ,  A61F2/848 ,  A61F2/94 ,  A61F2/95 ,  A61F2002/041 ,  A61F2002/8483 ,  A61F2002/8486 ,  A61F2002/9528 ,  A61F2210/0076 ,  A61F2220/0016 ,  A61F2250/0018 ,  A61F2250/0029

Abstract: A stent for medical use includes: a main body which includes a first rigid portion formed in a tubular shape along a longitudinal axis and having a predetermined rigidity with respect to a compression force exerted in a radial direction and a second rigid portion having a rigidity less than that of the first rigid portion, the second rigid portion which is substantially coaxial with and continues to a proximal end of the first rigid portion, and the second rigid portion which formed in a tubular shape along the longitudinal axis; and a gripping target region which is provided on an outer circumferential surface of the second rigid portion and is gripped by a gripping tool when the main body is led into a channel of an endoscope.

公开(公告)号：US20170000318A1

公开(公告)日：2017-01-05

申请号：US15268546

申请日：2016-09-17

Applicant: OLYMPUS CORPORATION

Inventor： Hiromichi MIYANO ,  Toshihiro YAMAGATA

IPC: A61B1/00 ,  A61F2/966 ,  A61F2/95

CPC classification number: A61B1/00133 ,  A61F2/94 ,  A61F2/95 ,  A61F2/966 ,  A61F2002/041 ,  A61F2230/0069

Abstract: A stent delivery system includes a guide catheter, a tubular stent into which the guide catheter can be inserted, and a tubular pusher catheter into which the guide catheter can be inserted and disposed nearer to a proximal end side than the stent. The pusher catheter includes a diameter expansion-suppressing part provided at a distal end part and having the same inner diameter as the stent and an intermediate part provided at a proximal end side of the diameter expansion-suppressing part and having a bending stiffness less than that of the diameter expansion-suppressing part. When the stent is pushed toward a distal end side by pushing the intermediate part of the pusher catheter toward the distal end side and bringing a distal end part of the diameter expansion-suppressing part into contact with a proximal end part of the stent, an inner diameter of the pusher catheter is prevented from expanding.

Abstract translation: 支架输送系统包括引导导管，可插入引导导管的管状支架，以及管状推进导管，引导导管可插入并布置成比支架更靠近近端侧。 推动导管包括设置在前端部并且具有与支架相同的内径的直径减小部分和设置在直径减小部分的基端侧的中间部分，并且具有小于该弯曲刚度的弯曲刚度 的直径膨胀抑制部。 当通过将推进导管的中间部分推向前端侧并使直径减小部分的远端部分与支架的近端部分接触来将支架推向远端侧时，内侧 防止推进导管的直径膨胀。

公开(公告)号：US20220192852A1

公开(公告)日：2022-06-23

申请号：US17552243

申请日：2021-12-15

Applicant: OLYMPUS CORPORATION

Inventor： Taihei ONISHI ,  Toshihiro YAMAGATA ,  Hirofumi TANIGUCHI

IPC: A61F2/966

Abstract: A stent delivery device for delivering a self-expanding stent comprises an inner sheath including a proximal end portion and a distal end portion, a stent stopper including a stopper main body that is circumferentially disposed over at least a portion of the inner sheath at the proximal end portion, and at least one projection extending radially outward from the stopper main body for releasably engaging a portion of the self-expanding stent, and an outer sheath slidably disposed over the inner sheath and the stent stopper. The at least one projection includes a distal end surface and a proximal end surface, and the proximal end surface includes a recess extending into a body of the projection toward the distal end surface.

公开(公告)号：US20170000311A1

公开(公告)日：2017-01-05

申请号：US15268552

申请日：2016-09-17

Applicant: OLYMPUS CORPORATION

Inventor： Toshihiro YAMAGATA ,  Hiromichi MIYANO

IPC: A61B1/00 ,  A61F2/95 ,  A61B17/00 ,  A61F2/966

CPC classification number: A61F2/95 ,  A61B1/00 ,  A61B1/00133 ,  A61B17/00234 ,  A61F2/04 ,  A61F2/94 ,  A61F2/966 ,  A61F2230/0069

Abstract: A stent delivery system includes a guide catheter, a stent into which the guide catheter can be inserted, and a pusher catheter into which the guide catheter can be inserted and disposed in a proximal end side relative to the stent. The guide catheter has a guide catheter tip portion protruding to a distal end side further than the stent when the guide catheter is inserted into the stern and the pusher catheter, and a guide catheter body disposed at least partially in the passages of the stent and the pusher catheter. The stent has flexural rigidity equal to or lower than that of the guide catheter body, and the stent mounted region has flexural rigidity equal to or lower than that of the pusher mounted region.

Abstract translation: 支架输送系统包括引导导管，可以插入引导导管的支架和推动导管，引导导管可以相对于支架插入并设置在近端侧。 引导导管具有导向导管末端部分，当引导导管插入到船尾和推动导管中时，突出到比支架更远的远端侧，以及至少部分地布置在支架的通道中的引导导管主体， 推动导管。 支架具有等于或低于导向导管主体的弯曲刚度，并且支架安装区域具有等于或低于推动器安装区域的弯曲刚度。

公开(公告)号：US20210267778A1

公开(公告)日：2021-09-02

申请号：US17323317

申请日：2021-05-18

Applicant: OLYMPUS CORPORATION

Inventor： Ryosuke SAKAI ,  Toshihiro YAMAGATA ,  Kazuhiro NODA ,  Yuko KIRINO ,  Nozomu KOTAKE

IPC: A61F2/88 ,  A61F2/966

Abstract: A medical stent including: a tubular main body made of resin that extends along an axis; a first locking member including a first fixed end fixed to the distal end side of the main body, and a first free end positioned radially outward of the main body; a second locking member including a second fixed end fixed to the proximal end side of the main body, and a second free end positioned radially outward of the main body; and a spiral reinforcing material made of metal which is embedded between the inner and outer circumferential surfaces of the main body. The reinforcing material includes a first portion spirally wound between the first and second fixed ends, a second portion spirally wound at a pitch greater than that of the first portion, and a third portion spirally wound at a pitch greater than that of the second portion.