Patents by Inventor Kazuaki Kanamoto

Kazuaki Kanamoto 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).

  • Publication number: 20200405346
    Abstract: A removal device and a removal system are configured to effectively remove an object in a body lumen while suppressing damage to another device. The removal device includes an elongated shaft part, and a cutting part fixed to a distal portion of the shaft part. The proximal portion of the cutting part includes a ring-shaped cutting blade, and a surface of the cutting part on which the cutting blade is positioned is inclined relative to center axis of the shaft part at an angle greater than 0 degrees and less than 90 degrees.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 31, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi IMAI, Takashi KITAOKA, Kazuaki KANAMOTO, Yuki MASUBUCHI
  • Publication number: 20200222076
    Abstract: A medical device is disclosed that can effectively destroy an object in a biological lumen, a method for controlling rotation of the medical device, and a rotation controller. The medical device to be inserted into a biological lumen to destroy a thrombus in the biological lumen includes a long shaft portion that is rotationally driven, a drive unit that rotates the shaft portion, a breaking member that is provided at a distal portion of the shaft portion and is rotatable, and a control unit that controls the rotation of the drive unit, in which the control unit controls the drive unit to repeat the rotation while interposing a stop of the rotation between rotations of the drive unit.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Takashi KITAOKA, Masaomi IMAI, Kazuaki KANAMOTO, Yuki MASUBUCHI
  • Patent number: 10653433
    Abstract: 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: Grant
    Filed: February 22, 2017
    Date of Patent: May 19, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yuuki Masubuchi, Masaomi Imai, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
  • Patent number: 10517619
    Abstract: 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: Grant
    Filed: February 22, 2017
    Date of Patent: December 31, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
  • Patent number: 10517618
    Abstract: 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: Grant
    Filed: February 9, 2017
    Date of Patent: December 31, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
  • Publication number: 20190192175
    Abstract: A method for suctioning an object in a blood vessel, the method comprising: inserting an expansion portion connected to a shaft portion on a distal portion of the shaft portion into the blood vessel; expanding the expansion portion in the blood vessel; inserting a suction catheter along the shaft portion into the blood vessel; reciprocating at least the expansion portion or the suction catheter relative to each other along an axial axis of the shaft portion; and suctioning the object with the suction catheter.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Takahiro CHIDA, Masaomi IMAI, Yuki MASUBUCHI, Takashi KITAOKA, Kazuaki KANAMOTO
  • Publication number: 20190183519
    Abstract: A medical device to be inserted into a blood vessel for effectively removing an object flowing in a biological lumen while reducing the burden on the living body includes an elongated shaft portion, and an expansion portion which is an elastically deformable cylindrical body having a plurality of gaps and in which a proximal portion or a distal portion of the cylindrical body is interlocked with the shaft portion. The expansion portion has a ring-shaped or annular bent portion which protrudes toward a proximal side position radially outside the expansion portion in a bent state of being bent along an axial direction, and an axial length of a second portion from the bent portion to a proximal end of the expansion portion is shorter than an axial length of a first portion from the bent portion to the distal end of the expansion portion.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi Imai, Takahiro Chida, Yuki Masubuchi, Takashi Kitaoka, Kazuaki Kanamoto
  • Publication number: 20190175212
    Abstract: A medical device and a treatment method are disclosed capable of breaking an object in a body lumen efficiently with a lower burden on body lumen tissues. A medical device is disclosed that is inserted into the body lumen so as to crush an object in the body lumen, the medical device including: an elongated shaft that is to be rotatably driven, and a deformable breaking member that is connected to the shaft so as to be rotatable and extends along the shaft. The breaking member has a first contact portion and a second contact portion. The first contact portion is located most outward in the radial direction of the breaking member in a state in which the breaking member is expanded radially outward. The second contact portion is located more outward in the radial direction of the breaking member than the first contact portion in a contracted state.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Takashi KITAOKA, Masaomi Imai, Yuki Masubuchi, Takahiro Chida, Kazuaki Kanamoto, Hideki Fujimagari
  • Publication number: 20190000500
    Abstract: A medical device for crushing an object in a body lumen, the medical device including: an elongated shaft portion rotatably driven; a crushing unit provided with bendable wire rods and rotatable together with the shaft portion; and a sliding unit fixed to each of end portion of the wire rods on at least one of a distal side of and a proximal side of the wire rods and is interlocked with the shaft portion so as to be slidable in an axial direction of the shaft portion. The shaft portion is provided with contact portions that come into contact with the sliding unit during rotation and limit relative rotation of the shaft portion and the sliding unit. After the sliding unit is attached to the contact portions, the sliding unit rotates in the same direction as the shaft portion along with the rotation of the shaft portion.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 3, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yuki Masubuchi, Masaomi Imai, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto, Yukitoshi Kato
  • Publication number: 20180103971
    Abstract: 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: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
  • Publication number: 20170238949
    Abstract: 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: Application
    Filed: February 22, 2017
    Publication date: August 24, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi IMAI, Yuuki MASUBUCHI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
  • Publication number: 20170238948
    Abstract: 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: Application
    Filed: February 22, 2017
    Publication date: August 24, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yuuki MASUBUCHI, Masaomi IMAI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
  • Publication number: 20170224364
    Abstract: 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: Application
    Filed: February 9, 2017
    Publication date: August 10, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi IMAI, Yuuki MASUBUCHI, Takashi KITAOKA, Takahiro CHIDA, Kazuaki KANAMOTO
  • Publication number: 20170065288
    Abstract: 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: Application
    Filed: September 2, 2016
    Publication date: March 9, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Masaomi Imai, Yuuki Masubuchi, Takashi Kitaoka, Takahiro Chida, Kazuaki Kanamoto
  • Publication number: 20160274303
    Abstract: An optical fiber is capable of radiating light radially in a wide range. The optical fiber includes an elongate primary coated optical fiber adapted to transmit light radiated for medical treatment. The primary coated optical fiber includes a core at a central portion and a cladding covering the core, and has an irradiation groove along the circumferential direction thereof. The irradiation groove extends from the cladding to reach the core of the primary coated optical fiber, and has side portions on both sides with respect to the axial direction of the primary coated optical fiber and a bottom portion. The side portions each have a protruding portion shaped to be protrude toward the inside of the irradiation groove.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 22, 2016
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yuuichi TADA, Yuuki ITOU, Kazuaki KANAMOTO
  • Patent number: 9427563
    Abstract: In a blood-flow-path switching device and a blood-bag system, a tube-shaped body (68) includes a body tube (69) extending in an axial direction and a branching tube (71) extending in a direction branching from the axial direction, and a blocking part (74) is provided in a hollow section (69c) of the body tube (69). A communicating part (70) movable in the axial direction is provided in the hollow section (69c). By moving the communicating part (70) in a pushing direction and creating an opening by penetrating the blocking part (74), a communication of a first port (86) and a third port (90) is blocked, and at the same time, the first port (86) and a second port (88) are communicated with each other.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: August 30, 2016
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Kazuaki Kanamoto, Kaoru Hosoe
  • Publication number: 20150133879
    Abstract: In a blood-flow-path switching device and a blood-bag system, a tube-shaped body (68) includes a body tube (69) extending in an axial direction and a branching tube (71) extending in a direction branching from the axial direction, and a blocking part (74) is provided in a hollow section (69c) of the body tube (69). A communicating part (70) movable in the axial direction is provided in the hollow section (69c). By moving the communicating part (70) in a pushing direction and creating an opening by penetrating the blocking part (74), a communication of a first port (86) and a third port (90) is blocked, and at the same time, the first port (86) and a second port (88) are communicated with each other.
    Type: Application
    Filed: February 12, 2013
    Publication date: May 14, 2015
    Inventors: Kazuaki Kanamoto, Kaoru Hosoe
  • Publication number: 20150119820
    Abstract: In a blood-flow-path connector (10) and blood bag system (12), a blocking part (74) is provided in a hollow section (68c) in a tubular body (68), and a communicating part (70) that is axially movable within the hollow section (68c) is disposed. By moving the communicating part (70) relative to the tubular body (68) in a pushing direction, the blocking part (74) is penetrated or pressed to be opened; thus, a flow-path in the tubular body (68) and a flow-path in the communicating part (70) come to communicate with each other.
    Type: Application
    Filed: February 12, 2013
    Publication date: April 30, 2015
    Inventor: Kazuaki Kanamoto