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公开(公告)号：US20220409229A1
公开(公告)日：2022-12-29
申请号：US17620765
申请日：2020-06-20
Inventor： Tohru TANI , Shigeyuki NAKA , Atsushi YAMADA
IPC: A61B17/3201 , A61B18/18
Abstract: Provided is a scissors-type medical treatment tool capable of not only local tissue fixation in an incision/cutting part but also heating on side surfaces of electrodes of a forceps/tweezers type. It has been found out that a tissue part in which tissue is nipped between blades and a tissue part which is brought into abutment against side surfaces of the blades can be heated simultaneously or sequentially by optimizing arrangement of microwave application electrodes and microwave receiver electrodes in a blade pair (in particular, by causing coagulation to be performed evenly on the left and right of the blades), and the present invention has therefore been achieved.
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Patent Agency Ranking
公开(公告)号：US20220175410A1
公开(公告)日：2022-06-09
申请号：US17554386
申请日：2021-12-17
Inventor： Tohru TANI , Shigeyuki NAKA , Atsushi YAMADA , Tsuyoshi NAKAKUBO
IPC: A61B17/3201 , A61B17/28 , A61B17/29 , A61B34/30
Abstract: A cutting device including a first contact member and at second contact member assembled so as to be openable and closable, a contact mechanism that rotates the first contact member toward the second contact member to bring the first contact member and the second contact member into contact with a target portion, and a cutting mechanism for cutting the target portion in a state where the first contact member and the second contact member are in contact with the target portion by the contact mechanism.
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公开(公告)号：US20190335977A1
公开(公告)日：2019-11-07
申请号：US16343990
申请日：2017-10-24
Inventor： Atsushi YAMADA , Tohru TANI , Shigeyuki NAKA , Shigehiro MORIKAWA
Abstract: A bending and extending device 1 comprises an elastic hollow guide unit 2 and a movable part 3 to be movably inserted into the guide unit 2. The movable part 3 is constituted, either partially or entirely, of a plurality of belt-like flexible parts 30a and 30b, which extend in the axial direction of the guide unit 2 and the flexible parts 30a and 30b are connected at distal ends. The bending and extending device 1 is characterized in that, when, by the sliding operation of the flexible parts 30a and 30b, a cross-section in which a contact point T of the flexible part 30a and the inner surface of the guide unit 2 is present on an extending line Y extending from a line segment connecting the centroid P of the flexible part 30b and the axial center G of the guide unit 2 and in which the flexible part 30a and the second flexible part 30b are in contact with each other is generated, and when the cross-section is divided into two ranges by a predetermined straight line X, the centroid P of the flexible part 30b is not positioned in a range in which the contact point T is present; and the predetermined straight line X is a line that passes through the axial center G of the guide unit 2, and that orthogonally crosses the extending line Y.
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公开(公告)号：US20220152357A1
公开(公告)日：2022-05-19
申请号：US17593619
申请日：2020-03-02
Inventor： Tohru TANI , Atsushi YAMADA , Tatsuya SHIMA , Wataru YONEMICHI
Abstract: A steerable catheter includes a flexible tube having a distal end and a proximal end. The tube includes a first tube section (sheath body section) the flexibility of which does not substantially change even upon receiving compression force in the axial direction; and a second tube section (deflection section) joined so as to be continuous with the distal end of the first tube section and constituted by a porous tube becoming hard upon being compressed according to the degree of the compression force acting in the axial direction and returning to being soft when the compression force is released. The tube includes operation means (wires) for releasably exerting a compression force compressing the second tube section in the axial direction and a deflection force deflecting the second tube section. According to some embodiments, both operability and insertability of the steerable catheter can be improved.
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公开(公告)号：US20210146096A1
公开(公告)日：2021-05-20
申请号：US17048061
申请日：2019-04-09
Inventor： Atsushi YAMADA , Tohru TANI , Wataru YONEMICHI
Abstract: A movable catheter is provided with a tube having a main lumen. The tube has a plurality of wire lumens and is provided with a wire. A substantial half on one end portion side thereof is inserted through the wire lumen, an intermediate part thereof is folded back in the distal end portion of the tube, and a substantial half on the other end portion side thereof is inserted through the wire lumen. The one end portion and the other end portion thereof are disposed on the proximal end side of the tube. Various embodiments enable the number of components to be reduced, and to reduce the number of manufacturing steps.
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公开(公告)号：US20230337899A1
公开(公告)日：2023-10-26
申请号：US18143451
申请日：2023-05-04
Inventor： Atsushi YAMADA , Tohru TANI
CPC classification number: A61B1/0052 , A61B1/00087 , A61B1/00133 , A61B34/30 , A61B1/0057 , A61B2034/302 , A61B2034/305 , A61B2034/301
Abstract: A movable elongated structure includes a distal end side tube, a base end side tube, traction wires, and a wiring aid routed by the traction wires arranged between the distal end side tube and the base end side tube, wherein the wiring aid guides the pair of traction wires from a pair of base end side wire lumens provided in the base end side tube to be introduced into a pair of distal end side wire lumens provided in the distal end side tube.
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