Patents by Inventor Nobuaki Akui

Nobuaki Akui 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: 20210161367
    Abstract: An endoscope includes: an insertion section; an operation section; a bending portion; a longitudinal member for maintaining a constant distance from the operation section to a distal end portion of the insertion section along a longitudinal axis of the insertion section; and a flexible tube portion provided in a movable manner with respect to the operation section and the longitudinal member in a longitudinal axis direction, and making the bending portion extend and contract with movement of the flexible tube portion with respect to the operation section in the longitudinal axis direction.
    Type: Application
    Filed: January 15, 2021
    Publication date: June 3, 2021
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20210161371
    Abstract: An endoscope includes an insertion section including a bending portion configured to bend in response to pulling and relaxing of a pair of wires, an operation section, a pulling mechanism configured to pull and relax the pair of wires, a holding portion holding a treatment member, and a driving member configured to move the holding portion in a direction along a longitudinal axis of the treatment member. The pulling member includes a pulley to which the pair of wires is connected, a shaft member protruding from the pulley and having a central axis coinciding with a central axis of the pulley, and a support portion supporting the shaft member such that the shaft member is rotatable about the central axis, and configured to allow a movement of the shaft member in a first direction and a second direction that are parallel to the central axis of the shaft member.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 3, 2021
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20210137356
    Abstract: An endoscope includes an insertion portion, an operation portion, a bending portion, a pair of wires inserted into the insertion portion and configured to bend at least part of the bending portion in a first direction and a second direction opposite to the first direction, a first pulling mechanism configured to pull and loosen the pair of wires, a linear member inserted into the bending portion, a second pulling mechanism configured to pull the linear member in a direction parallel to a central axis, and a holding portion configured to hold the linear member in the bending portion at a position decentered from a center in a third direction or a fourth direction.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20210127951
    Abstract: An endoscope includes: a first bending wire that is connected with a first connection part of a bending portion of an insertion portion inserted into a subject and bends the entire bending portion in a first bending direction by pulling; a second bending wire that is connected with a second connection part of the bending portion positioned on a proximal end side of the first connection part and bends a proximal end side part of the bending portion on the proximal end side of the second connection part in the first bending direction by pulling; an operation lever that pulls the first bending wire to the proximal end side; an operation lever that pulls the second bending wire to the proximal end side; and a coil pipe into which the first and second bending wires are inserted at a position on the proximal end side of the bending portion.
    Type: Application
    Filed: December 17, 2020
    Publication date: May 6, 2021
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20210127950
    Abstract: An endoscope includes an insertion portion, a distal end rigid member, and a channel tube. The distal end rigid member is provided on a distal end side with respect to the bending portion of the insertion portion, and includes an illumination window, an observation window, and a treatment instrument opening. As the distal end rigid member moves relative to the bending portion in a distal end direction of a longitudinal axial direction, the distal end rigid member can change from a first state in which a distance between a proximal end surface of the distal end rigid member and a distal end surface of the bending portion is fixed to a first distance to a second state in which the distance is equal to a second distance longer than the first distance.
    Type: Application
    Filed: December 15, 2020
    Publication date: May 6, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Nobuaki AKUI, Hidetoshi SAITO
  • Publication number: 20200037850
    Abstract: An endoscope bending portion is formed of a multilumen tube, and includes: two lumens through which a pair of bending operation wires for performing a bending operation in a first direction and in a second direction opposite to the first direction are individually inserted; and a bending direction restriction member configured to restrict bending in a direction of a second axis orthogonal to a first axis passing through a center axis in the first direction and the second direction.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20190150709
    Abstract: There is provided an endoscope capable of realizing equal operability by either a left or right hand without upsizing an operation portion. For this purpose, an operation portion is formed in a bilaterally symmetrical shape; a suction button and a bending lever are disposed at a center in a left and right width direction of the operation portion facing each other; and respective arm portions are disposed in a state of being rotated around a central axis of the bending lever by a predetermined angle relative to up, down, left and right tilt directions defined for the bending lever.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 23, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Patent number: 10231605
    Abstract: There is provided an endoscope capable of realizing equal operability by either a left or right hand without upsizing an operation portion. For this purpose, an operation portion is formed in a bilaterally symmetrical shape; a suction button and a bending lever are disposed at a center in a left and right width direction of the operation portion facing each other; and respective arm portions are disposed in a state of being rotated around a central axis of the bending lever by a predetermined angle relative to up, down, left and right tilt directions defined for the bending lever.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: March 19, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Nobuaki Akui
  • Publication number: 20160331214
    Abstract: An endoscope includes: an operation portion including a grasping portion configured to be grasped by a user and having a first longitudinal axis; an insertion portion configured to be inserted into a subject, the insertion portion having a second longitudinal axis that has a predetermined acute angle with respect to the first longitudinal axis and extending from the operation portion at a position on a more distal end side with respect to a treatment instrument insertion portion provided at the grasping portion; and a cable including, at an extension end thereof, a connector portion configured to be detachably connected with an external device, the cable having a third longitudinal axis on an extended line of the first longitudinal axis and extending from a distal end side of the operation portion.
    Type: Application
    Filed: July 28, 2016
    Publication date: November 17, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Kiwamu FUJITANI, Tatsuhiko SUZUKI, Motohiro KURODA, Nobuaki AKUI, Reisuke OSADA, Chikayoshi MEGURO
  • Publication number: 20160309985
    Abstract: There is provided an endoscope capable of realizing equal operability by either a left or right hand without upsizing an operation portion. For this purpose, an operation portion is formed in a bilaterally symmetrical shape; a suction button and a bending lever are disposed at a center in a left and right width direction of the operation portion facing each other; and respective arm portions are disposed in a state of being rotated around a central axis of the bending lever by a predetermined angle relative to up, down, left and right tilt directions defined for the bending lever.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Nobuaki AKUI
  • Publication number: 20150366453
    Abstract: A measurement probe is configured to be detachably attached to an optical measurement apparatus. The measurement probe has at an end surface thereof exit ends of a plurality of optical fibers. The optical measurement apparatus includes: an imaging unit that receives rays of light transmitted from the exit ends of the plurality of optical fibers and performs photoelectric conversion in order to generate and output an electric signal; and a partition unit that optically isolates paths for the rays of light transmitted from the exit ends of the plurality of optical fibers, from one another in a space from the end surface to a light reception surface of the imaging unit. The partition unit comes into contact with the end surface at one end of the partition unit, and comes into contact with the light reception surface of the imaging unit at another end of the partition unit.
    Type: Application
    Filed: September 1, 2015
    Publication date: December 24, 2015
    Inventors: Seiki TORIYAMA, Nobuaki AKUI
  • Patent number: 8953031
    Abstract: In a medical device, a field-of-view switching mechanism which moves a field of view imaged by an observation section, and an illumination-light switching mechanism including an illumination section having an illumination range of illumination light whose entire field of view is covered by movement, are configured integrally with each other. The illumination light is illuminated to the current field of view by moving the illumination range of the illumination light, in synchronism with pivoting of an observation and in compliance with the field of view.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 10, 2015
    Assignee: Olympus Medical Systems Corp.
    Inventors: Nobuaki Akui, Satoshi Takekoshi
  • Patent number: 8932209
    Abstract: A scanning endoscopic device includes an optical fiber allowing irradiation light guided from a proximal side fiber portion to a distal side fiber portion to exit from a distal end thereof, and an actuator section placed to a distal direction side of the proximal fiber portion. The scanning endoscopic device includes a light absorbing section absorbing beam light having directivity in one direction, and the light absorbing section includes a black filling member filling a space between the proximal side fiber portion and an outer envelope tube in radial directions. The device further includes a light scattering section provided between the proximal side fiber portion and the outer envelope tube in the radial directions to scatter the beam of light.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: January 13, 2015
    Assignee: Olympus Medical Systems Corp.
    Inventors: Nobuaki Akui, Yuji Sakai
  • Patent number: 8926500
    Abstract: In a light irradiating device of a scanning endoscopic device, a proximal end of a lens optical system is located apart from a distal end of an optical fiber in directions parallel to the longitudinal axis, and a lens-side facing portion faces a fiber-side facing portion apart from the fiber-side facing portion by a second dimension smaller than a first dimension between the distal end of the optical fiber and the proximal end of the lens optical system in the directions parallel to the longitudinal axis. The proximal end of the lens optical system and the distal end of the optical fiber are located between a distal end and a proximal end of the window in the directions parallel to the longitudinal axis.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: January 6, 2015
    Assignee: Olympus Medical Systems Corp.
    Inventor: Nobuaki Akui
  • Publication number: 20140194693
    Abstract: An endoscope apparatus includes: a laser light source that generates laser light; an optical fiber that guides laser light inputted to a proximal end and applies the laser light to a subject from a distal end; an actuator swinging a distal end portion of the optical fiber; the conductive wire provided in close contact with the optical fiber, and connected to the actuator; a signal generator that generates a drive signal for driving the actuator, the drive signal being conducted by the conductive wire; a detection circuit that detects a current flowing in the conductive wire when the signal generator generates the drive signal, and detects that the conductive wire is broken, based on the detected current value; and a controller that controls an amount of illuminating light based on a result of determination of whether or not the conductive wire is broken in the detection circuit.
    Type: Application
    Filed: February 19, 2014
    Publication date: July 10, 2014
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Katsuichi IMAIZUMI, Nobuaki AKUI, Mitsuhiro ITO
  • Publication number: 20140073950
    Abstract: A scanning endoscopic device includes an optical fiber allowing irradiation light guided from a proximal side fiber portion to a distal side fiber portion to exit from a distal end thereof, and an actuator section placed to a distal direction side of the proximal fiber portion. The scanning endoscopic device includes a light absorbing section absorbing beam light having directivity in one direction, and the light absorbing section includes a black filling member filling a space between the proximal side fiber portion and an outer envelope tube in radial directions.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 13, 2014
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Nobuaki Akui, Yuji Sakai
  • Publication number: 20130345508
    Abstract: In a light irradiating device of a scanning endoscopic device, a proximal end of a lens optical system is located apart from a distal end of an optical fiber in directions parallel to the longitudinal axis, and a lens-side facing portion faces a fiber-side facing portion apart from the fiber-side facing portion by a second dimension smaller than a first dimension between the distal end of the optical fiber and the proximal end of the lens optical system in the directions parallel to the longitudinal axis. The proximal end of the lens optical system and the distal end of the optical fiber are located between a distal end and a proximal end of the window in the directions parallel to the longitudinal axis.
    Type: Application
    Filed: June 27, 2013
    Publication date: December 26, 2013
    Inventor: Nobuaki AKUI
  • Publication number: 20130258081
    Abstract: In a medical device, a field-of-view switching mechanism which moves a field of view imaged by an observation section, and an illumination-light switching mechanism including an illumination section having an illumination range of illumination light whose entire field of view is covered by movement, are configured integrally with each other. The illumination light is illuminated to the current field of view by moving the illumination range of the illumination light, in synchronism with pivoting of an observation and in compliance with the field of view.
    Type: Application
    Filed: March 5, 2013
    Publication date: October 3, 2013
    Inventors: Nobuaki AKUI, Satoshi TAKEKOSHI
  • Publication number: 20110230718
    Abstract: A medical flexible section includes an inner tube body which has a first bend allowing section configured to allow bending in a predetermined direction provided on a side surface thereof and forms a duct and an outer tube body which has a second bend allowing section configured to allow bending in a predetermined direction provided on a side surface thereof and in which the inner tube body is inserted. The medical flexible section includes an operation ring configured to change bendability of an insertion section constituted of the outer tube body and the inner tube body by rotating the inner tube body in a periaxial direction with respect to the outer tube body to adjust a relative positional relationship between the first bend allowing section and the second bend allowing section.
    Type: Application
    Filed: March 28, 2011
    Publication date: September 22, 2011
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventor: Nobuaki AKUI
  • Patent number: 7959561
    Abstract: An endoscope system includes a rigid endoscope including an optical system in a rigid insert section thereof, and a wiper sheath. The wiper sheath includes a wiper insert section receiving the insert section of the rigid endoscope, a wiper arranged on a distal end portion of the wiper insert section and enabled to be placed in contact with a distal-end face of the rigid endoscope received in the wiper insert section, and an operation unit, arranged at a proximal end portion of the wiper insert section, for switching the wiper between a contact state with the wiper placed to be in contact with the distal-end face of the rigid endoscope and a detached state with the wiper spaced apart from the distal-end face of the rigid endoscope, and for moving the wiper on and along the distal-end face of the rigid endoscope when the wiper is in the contact state.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: June 14, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Nobuaki Akui, Kazuo Banju, Takumi Dejima