Patents by Inventor Yuuki MASUBUCHI
Yuuki MASUBUCHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11534188Abstract: A medical device and a treatment method are disclosed that can be applied to body lumina with a wide range of inside diameters and can enhance a property for suction of a substance from the inside of a body lumen by restricting flow within the body lumen. The medical device includes an elongated shaft section; an expanding section that is an elastically deformable tubular body provided with a plurality of openings; a flexibly deformable tubular cover section that is coupled to an end portion on a proximal side of the expanding section, surrounds an outer periphery of the expanding section on the proximal side, but does not surround, and externally exposes, an outer periphery of the expanding section on a distal side; and a sheath capable of accommodating the expanding section and the cover section in a diameter-reduced state.Type: GrantFiled: December 14, 2017Date of Patent: December 27, 2022Assignee: TERUMO KABUSHIKI KAISHAInventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Patent number: 10653433Abstract: Provided is a medical device designed to be inserted into a lumen of a living body, the medical device including: a long shaft part; and a cylindrical hollow body. The shaft part has a center axis at position which differs from a center axis of the hollow body on a cross section perpendicular to the center axis of the shaft part. The hollow body has a housing part extending along the center axis of the hollow body, the hollow body being a groove depressed from an outer peripheral surface to an inner peripheral surface or a slit penetrating from an outer peripheral surface to an inner peripheral surface. The shaft part is positioned between inner surfaces facing from the outer peripheral surface to the inner peripheral surface in such a way that at least a portion of the shaft part constitutes the slit or the groove of the housing part.Type: GrantFiled: February 22, 2017Date of Patent: May 19, 2020Assignee: TERUMO KABUSHIKI KAISHAInventors: Yuuki Masubuchi, Masaomi Imai, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Patent number: 10517618Abstract: A medical device to be inserted into a body lumen to obstruct flow in the body lumen includes a shaft unit; a proximal slider and a distal slider that are slidable along the shaft unit; a first expanding member including a distal portion coupled to the proximal slider and a proximal portion coupled to the shaft unit; a second expanding member including a distal portion coupled to the distal slider and a proximal portion coupled to the proximal slider; and a cover that surrounds an outer periphery of the first expanding member and coupled to the proximal portion of the first expanding member, the cover being tubular and flexibly deformable independently of the first expanding member.Type: GrantFiled: February 9, 2017Date of Patent: December 31, 2019Assignee: TERUMO KABUSHIKI KAISHAInventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Patent number: 10517619Abstract: A medical device designed to be inserted into a lumen of a living body so as to block a flow of fluid in the lumen of the living body. The medical device includes: a long shaft part; an expandable part; and a covering part. The expandable part is an elastically deformable cylindrical body, and the cylindrical body having a proximal part connected to the shaft part. The covering part takes on a cylindrical shape and is flexible and deformable independently of the expandable part, and the cylindrical shape has a proximal part connected to a proximal part of the expandable part or connected to the shaft part located at a proximal side with respect to the expandable part. The covering part defines a space in the radial direction between a distal side end part of the cylindrical shape and the expandable part.Type: GrantFiled: February 22, 2017Date of Patent: December 31, 2019Assignee: TERUMO KABUSHIKI KAISHAInventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Patent number: 10285718Abstract: A catheter system includes a shaft main body having a rotation axis lumen including a rotation central axis, a revolving lumen that revolves around the rotation axis lumen when the shaft main body is rotated about the rotation central axis, a side-by-side portion in which at least a portion of the rotation axis lumen and at least a portion of revolving lumen exist in side-by-side relationship, and a branch part at which the revolving lumen branches off from the side-by-side portion on a distal side relative to the branch part. The revolving lumen on the distal side relative to the branch part is formed of a distal shaft which has a proximal-side bending portion that bends in such a direction as to become farther away from the rotation axis lumen in radial direction and an opening that communicates with the revolving lumen.Type: GrantFiled: March 11, 2016Date of Patent: May 14, 2019Assignee: TERUMO KABUSHIKI KAISHAInventor: Yuuki Masubuchi
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Publication number: 20180103971Abstract: A medical device and a treatment method are disclosed that can be applied to body lumina with a wide range of inside diameters and can enhance a property for suction of a substance from the inside of a body lumen by restricting flow within the body lumen. The medical device includes an elongated shaft section; an expanding section that is an elastically deformable tubular body provided with a plurality of openings; a flexibly deformable tubular cover section that is coupled to an end portion on a proximal side of the expanding section, surrounds an outer periphery of the expanding section on the proximal side, but does not surround, and externally exposes, an outer periphery of the expanding section on a distal side; and a sheath capable of accommodating the expanding section and the cover section in a diameter-reduced state.Type: ApplicationFiled: December 14, 2017Publication date: April 19, 2018Applicant: TERUMO KABUSHIKI KAISHAInventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Publication number: 20170238949Abstract: A medical device designed to be inserted into a lumen of a living body so as to block a flow of fluid in the lumen of the living body. The medical device includes: a long shaft part; an expandable part; and a covering part. The expandable part is an elastically deformable cylindrical body, and the cylindrical body having a proximal part connected to the shaft part. The covering part takes on a cylindrical shape and is flexible and deformable independently of the expandable part, and the cylindrical shape has a proximal part connected to a proximal part of the expandable part or connected to the shaft part located at a proximal side with respect to the expandable part. The covering part defines a space in the radial direction between a distal side end part of the cylindrical shape and the expandable part.Type: ApplicationFiled: February 22, 2017Publication date: August 24, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Masaomi IMAI, Yuuki MASUBUCHI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
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Publication number: 20170238948Abstract: Provided is a medical device designed to be inserted into a lumen of a living body, the medical device including: a long shaft part; and a cylindrical hollow body. The shaft part has a center axis at position which differs from a center axis of the hollow body on a cross section perpendicular to the center axis of the shaft part. The hollow body has a housing part extending along the center axis of the hollow body, the hollow body being a groove depressed from an outer peripheral surface to an inner peripheral surface or a slit penetrating from an outer peripheral surface to an inner peripheral surface. The shaft part is positioned between inner surfaces facing from the outer peripheral surface to the inner peripheral surface in such a way that at least a portion of the shaft part constitutes the slit or the groove of the housing part.Type: ApplicationFiled: February 22, 2017Publication date: August 24, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Yuuki MASUBUCHI, Masaomi IMAI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
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Publication number: 20170224364Abstract: A medical device to be inserted into a body lumen to obstruct flow in the body lumen includes a shaft unit; a proximal slider and a distal slider that are slidable along the shaft unit; a first expanding member including a distal portion coupled to the proximal slider and a proximal portion coupled to the shaft unit; a second expanding member including a distal portion coupled to the distal slider and a proximal portion coupled to the proximal slider; and a cover that surrounds an outer periphery of the first expanding member and coupled to the proximal portion of the first expanding member, the cover being tubular and flexibly deformable independently of the first expanding member.Type: ApplicationFiled: February 9, 2017Publication date: August 10, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Masaomi IMAI, Yuuki MASUBUCHI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
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Publication number: 20170065288Abstract: A medical device is disclosed for restricting a flow in a body lumen by being inserted into the body lumen. The medical device including an elongated shaft part; an expansion part which is a tubular body having a plurality of gaps and elastically deformable, with the shaft part being connected to at least one of both side end portions of the tubular body; a cover part which is flexibly deformable independently from the expansion part while surrounding an outer circumference of the expansion part, which is tubular in shape, both end portions of the tubular shape being connected to both end portions of the expansion part; and a sheath in which the expansion part and the cover part both contracted in diameter can be accommodated.Type: ApplicationFiled: September 2, 2016Publication date: March 9, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
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Publication number: 20160270803Abstract: A catheter system includes a shaft main body having a rotation axis lumen including a rotation central axis, a revolving lumen that revolves around the rotation axis lumen when the shaft main body is rotated about the rotation central axis, a side-by-side portion in which at least a portion of the rotation axis lumen and at least a portion of revolving lumen exist in side-by-side relationship, and a branch part at which the revolving lumen branches off from the side-by-side portion on a distal side relative to the branch part. The revolving lumen on the distal side relative to the branch part is formed of a distal shaft which has a proximal-side bending portion that bends in such a direction as to become farther away from the rotation axis lumen in radial direction and an opening that communicates with the revolving lumen.Type: ApplicationFiled: March 11, 2016Publication date: September 22, 2016Applicant: TERUMO KABUSHIKI KAISHAInventor: Yuuki MASUBUCHI