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公开(公告)号：US20230133812A1
公开(公告)日：2023-05-04
申请号：US17974664
申请日：2022-10-27
发明人： Yusuke SHIOTA , Kotaro YAMADA , Hiromasa KATO
摘要： An endoscope treatment tool includes a sheath, a knife, a connecting unit and a body. The sheath includes a first channel opened at a distal end of the sheath. The knife inserted into the first channel, the knife having a second channel extending from a distal end of the knife to a proximal end of the knife. The connecting unit is located inside the sheath, the connecting unit including a cavity internal to the connecting unit and defining a storage path. A cross-sectional area of the cavity is larger than a cross-sectional area of the second channel. The body disposed in the cavity. The body is translatable in the cavity between a first position and a second position. The body forms a passage and, in the first position, the passage is in communication with the second channel.
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公开(公告)号：US20220273329A1
公开(公告)日：2022-09-01
申请号：US17676894
申请日：2022-02-22
发明人： Hiromasa KATO , Yusuke SHIOTA
IPC分类号： A61B17/3205 , A61B17/00
摘要： An endoscopic surgical tool including a housing having a proximal end and a distal end, the housing having a central axis and a first aperture forming an opening disposed at the distal end, an insulator disposed within the housing and having a central bore and a second aperture, the insulator configured to extend distally from the first aperture along the central axis, and a knife disposed within the first aperture and including a tip. The knife having a retracted position and an extended position, wherein in the extended position, the knife is extended distally from the first aperture along the central axis and in the retracted position, the knife is retracted proximally towards the proximal end along the central axis. The endoscopic surgical tool including a biasing element coupled to the knife and biasing the knife toward the retracted position when the knife is in the extended position.
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公开(公告)号：US20240197156A1
公开(公告)日：2024-06-20
申请号：US18540161
申请日：2023-12-14
发明人： Hiromasa KATO , Yusuke Shiota , Chika Miyajima , Kotaro Yamada , Daiki Hagiwara
CPC分类号： A61B1/018 , A61B1/00094 , A61B18/1492 , A61B2017/00269
摘要： A treatment instrument includes a tube with a conduit; a wire located in the tube so as to advance and retract in the tube, and through which a high frequency current is allowed to flow. The treatment instrument may also include an electrode connected to a distal end of the wire; and a distal end tip located at a distal end portion of the tube, the distal end tip configured to accommodate at least a part of the electrode. The distal end tip includes a passage that connects with an outer peripheral surface and an inner peripheral surface of the distal end tip. The passage connects with the conduit.
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公开(公告)号：US20230137591A1
公开(公告)日：2023-05-04
申请号：US17973825
申请日：2022-10-26
发明人： Kotaro YAMADA , Yusuke SHIOTA , Hiromasa KATO
摘要： An endoscope treatment tool includes a sheath, an electrode and a needle. The sheath includes a first hole opened at a distal end of the sheath. The electrode is inserted into the first hole and includes a second hole opened at a distal end of the electrode. The needle is inserted into the second hole. The needle is movable to protrude from a distal end of the second hole of the electrode. A gap between the electrode and the needle is configured to pass a fluid.
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公开(公告)号：US20240206956A1
公开(公告)日：2024-06-27
申请号：US18390708
申请日：2023-12-20
发明人： Shunsuke MOTOSUGI , Yusuke SHIOTA , Hiromasa KATO , Yuya MATSUOKA , Kazuki OZAWA
CPC分类号： A61B18/1482 , A61B17/320016 , A61B17/3478 , A61B2017/00269
摘要： A treatment tool for an endoscope includes a sheath having a distal end and a proximal end, an electrode provided on a distal end portion of the sheath, and a rod provided at a position away from the electrode in a radial direction. The rod configured to move forward and advance, and, in a state in which at least the electrode and the rod protrude from the sheath, a part of a flow path through which a fluid passes is formed in at least a part of a space between the electrode and the rod.
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公开(公告)号：US20220241002A1
公开(公告)日：2022-08-04
申请号：US17586390
申请日：2022-01-27
发明人： Yusuke SHIOTA , Chika MIYAJIMA , Hiromasa KATO , Kotaro YAMADA , Tomohiro TSUJI
IPC分类号： A61B18/14
摘要： An endoscopic treatment device includes a sheath formed from a resin; a tubular hollow needle inserted into the sheath and having a sharp distal end; a rod formed from a metal and having a conduit; a shaft attached to a proximal end of the rod and having an internal space communicating with the conduit of the rod; and an operation portion including (i) a slider attached to a proximal end of the shaft, and (ii) and a lever attached to a proximal end of the hollow needle.
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公开(公告)号：US20230248424A1
公开(公告)日：2023-08-10
申请号：US18107606
申请日：2023-02-09
发明人： Yusuke SHIOTA , Chika MIYAJIMA , Hiromasa KATO , Junichi KOGISO , Yohei YOSHIDA , Yasuhito SUGA , Yasuo FUNAKOSHI , Yui KAWANISHI
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B2018/1475 , A61B2218/003 , A61B2218/005 , A61B2018/00601
摘要： An endoscopic treatment device includes a hollow tube; an electrode; and an insulative support member. In a radial direction relative to a longitudinal axis of the hollow tube, the insulative support member is radially outward of the electrode and the hollow tube is radially outward of the insulative support member.
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公开(公告)号：US20230240514A1
公开(公告)日：2023-08-03
申请号：US18104879
申请日：2023-02-02
发明人： Yusuke SHIOTA , Kotaro YAMADA , Daiki HAGIWARA , Hiromasa KATO , Chika MIYAJIMA
IPC分类号： A61B1/00
CPC分类号： A61B1/00087 , A61B1/00124 , A61B1/00042 , A61B1/00066
摘要： An endoscope treatment tool, comprising: a sheath; a handle body; a wire; a treatment portion connected to a distal end of the wire and arranged on a distal end side of the sheath; a rotating handle movable with respect to the handle body and connected to the wire; a conductive connector having an insertion passage through which the wire is inserted, wherein the wire is movable in a wire movement direction to advance and retreat in a direction that is parallel to a longitudinal axis of the handle body, wherein the wire is rotatable around an axis of the wire movement direction, and wherein the conductive connector extends in a direction that intersects the wire movement direction.
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公开(公告)号：US20230136593A1
公开(公告)日：2023-05-04
申请号：US17975944
申请日：2022-10-28
发明人： Kotaro YAMADA , Yusuke SHIOTA , Hiromasa KATO
摘要： A treatment tool includes a sheath, a hollow pipe extending in the sheath and an elastically deformable constricting member. The hollow pipe includes a flow channel formed in a direction of a longitudinal axis of the hollow pipe and extending between a distal end of the hollow pipe and a proximal end of the hollow pipe. The elastically deformable constricting member includes a first end that is reversibly insertable into the flow channel.
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公开(公告)号：US20230133233A1
公开(公告)日：2023-05-04
申请号：US17974178
申请日：2022-10-26
发明人： Hiromasa KATO , Yusuke SHIOTA , Kotaro YAMADA
IPC分类号： A61B1/00
摘要： An endoscope treatment tool includes a sheath and an incision device. The sheath includes a distal end portion having a first channel. The first channel extends internal to the distal end portion between a distal opening at a distal end surface of the distal end portion and a proximal opening at a main flow chamber. The incision device is inserted in the first channel and includes a second channel extending between a distal end of the incision device and a proximal end of the incision device. The endoscope treatment tool is switchable between a first mode and a second mode. In the first mode, a first path for fluid is formed between the main flow chamber and the first channel. In the second mode, a second path for fluid is formed between the main flow chamber and the second channel.
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