Patents by Inventor Toshiki Tachikawa

Toshiki Tachikawa 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).

  • Patent number: 10039937
    Abstract: A charged-particle beam therapy apparatus includes: an accelerator configured to accelerate a charged particle and emit a charged-particle beam; an irradiation unit configured to irradiate an irradiated body with the charged-particle beam using a scanning method; and a control unit. The control unit stores a control pattern of the apparatus during one treatment. An irradiation interruption time for which the irradiation of the irradiated body with the charged-particle beam by the irradiation unit is interrupted and an irradiation time for which the irradiation unit irradiates the irradiated body with the charged-particle beam are set in the control pattern. The sum of the irradiation interruption times during one treatment is set to be shorter than the sum of the irradiation times during one treatment.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 7, 2018
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Toshiki Tachikawa, Toru Asaba, Masanori Tachibana
  • Patent number: 9687680
    Abstract: Accelerated particle irradiation equipment is installed in a building having a multi-story structure. The accelerated particle irradiation equipment includes a particle accelerator and an irradiation device. The particle accelerator generates accelerated particles. The irradiation device performs irradiation of the accelerated particles generated by the particle accelerator, and is installed on at least one of the floor above and the floor below the floor on which the particle accelerator is installed.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 27, 2017
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Satoru Yajima, Toshiki Tachikawa
  • Publication number: 20160074676
    Abstract: Accelerated particle irradiation equipment is installed in a building having a multi-story structure. The accelerated particle irradiation equipment includes a particle accelerator and an irradiation device. The particle accelerator generates accelerated particles. The irradiation device performs irradiation of the accelerated particles generated by the particle accelerator, and is installed on at least one of the floor above and the floor below the floor on which the particle accelerator is installed.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Inventors: Satoru YAJIMA, Toshiki TACHIKAWA
  • Patent number: 9220923
    Abstract: Accelerated particle irradiation equipment is installed in a building having a multi-story structure. The accelerated particle irradiation equipment includes a particle accelerator and an irradiation device. The particle accelerator generates accelerated particles. The irradiation device performs irradiation of the accelerated particles generated by the particle accelerator, and is installed on at least one of the floor above and the floor below the floor on which the particle accelerator is installed.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: December 29, 2015
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Satoru Yajima, Toshiki Tachikawa
  • Patent number: 9210793
    Abstract: Provided is a charged particle beam radiation control device that controls radiation of a charged particle beam, the charged particle beam radiation control device including: a controller which controls an acceleration voltage for accelerating charged particles, wherein the controller includes a set acceleration voltage controller which selects a non-radiation state of a charged particle beam by setting an acceleration voltage of a radiation state of the charged particle beam to a reference acceleration voltage and changing the acceleration voltage to a set acceleration voltage larger or smaller than the reference acceleration voltage.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: December 8, 2015
    Assignees: NATIONAL CANCER CENTER, SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Teiji Nishio, Toshiki Tachikawa
  • Publication number: 20150265855
    Abstract: A charged-particle beam therapy apparatus includes: an accelerator configured to accelerate a charged particle and emit a charged-particle beam; an irradiation unit configured to irradiate an irradiated body with the charged-particle beam using a scanning method; and a control unit. The control unit stores a control pattern of the apparatus during one treatment. An irradiation interruption time for which the irradiation of the irradiated body with the charged-particle beam by the irradiation unit is interrupted and an irradiation time for which the irradiation unit irradiates the irradiated body with the charged-particle beam are set in the control pattern. The sum of the irradiation interruption times during one treatment is set to be shorter than the sum of the irradiation times during one treatment.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 24, 2015
    Inventors: Toshiki TACHIKAWA, Toru ASABA, Masanori TACHIBANA
  • Patent number: 8766220
    Abstract: A charged particle beam irradiation apparatus includes: an irradiation section configured to irradiate an irradiated body with a charged particle beam; a multi-leaf collimator configured to set an irradiation range of the charged particle beam which is irradiated from the irradiation section; an imaging section that is provided so as to be able to advance and retreat with respect to an irradiation axis of the charged particle beam which is irradiated from the irradiation section, between the irradiation section and the multi-leaf collimator, and directly images an opening portion of the multi-leaf collimator; and a drive section configured to move the imaging section between an imaging position corresponding to an irradiation area which includes the irradiation axis of the charged particle beam and a retreated position away from the irradiation area.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: July 1, 2014
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Toshiki Tachikawa, Tsuyoshi Ogasawara
  • Publication number: 20140077098
    Abstract: A charged particle beam irradiation apparatus includes: an irradiation section configured to irradiate an irradiated body with a charged particle beam; a multi-leaf collimator configured to set an irradiation range of the charged particle beam which is irradiated from the irradiation section; an imaging section that is provided so as to be able to advance and retreat with respect to an irradiation axis of the charged particle beam which is irradiated from the irradiation section, between the irradiation section and the multi-leaf collimator, and directly images an opening portion of the multi-leaf collimator; and a drive section configured to move the imaging section between an imaging position corresponding to an irradiation area which includes the irradiation axis of the charged particle beam and a retreated position away from the irradiation area.
    Type: Application
    Filed: March 28, 2012
    Publication date: March 20, 2014
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Toshiki Tachikawa, Tsuyoshi Ogasawara
  • Patent number: 8153989
    Abstract: The present invention provides a charged particle beam irradiating apparatus capable of simply preventing unevenness or reduction in a peripheral portion of the dose distribution of a charged particle beam. A charged particle beam irradiating apparatus includes scanning electromagnets that scan a charged particle beam and a control device that controls the operations of the scanning electromagnets. In the charged particle beam irradiating apparatus, the control unit changes a scanning speed when the charged particle beam is irradiated along an irradiation line such that a peripheral portion of the dose distribution of the charged particle beam is corrected.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: April 10, 2012
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Toshiki Tachikawa, Toru Asaba, Toshiaki Ochi
  • Publication number: 20120068631
    Abstract: Provided is a charged particle beam radiation control device that controls radiation of a charged particle beam, the charged particle beam radiation control device including: a controller which controls an acceleration voltage for accelerating charged particles, wherein the controller includes a set acceleration voltage controller which selects a non-radiation state of a charged particle beam by setting an acceleration voltage of a radiation state of the charged particle beam to a reference acceleration voltage and changing the acceleration voltage to a set acceleration voltage larger or smaller than the reference acceleration voltage.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 22, 2012
    Applicants: SUMITOMO HEAVY INDUSTRIES, LTD., NATIONAL CANCER CENTER
    Inventors: Teiji NISHIO, Toshiki TACHIKAWA
  • Patent number: 8049187
    Abstract: The present invention provides a charged particle beam irradiating apparatus capable of irradiating a charged particle beam using both a wobbler method and a scanning method. A charged particle beam irradiating apparatus includes: scanning electromagnets that scan a charged particle beam; a wobbler irradiation unit that irradiates the charged particle beam using a wobbler method; a scanning irradiation unit that irradiates the charged particle beam using a scanning method; and a control unit that controls the wobbler irradiation unit and the scanning irradiation unit. In the charged particle beam irradiating apparatus, the control unit operates one of the wobbler irradiation unit and the scanning irradiation unit, and controls the other irradiation unit to be in a withdrawn state so as not to hinder the irradiation of the charged particle beam.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: November 1, 2011
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventor: Toshiki Tachikawa
  • Publication number: 20110220809
    Abstract: Accelerated particle irradiation equipment is installed in a building having a multi-story structure. The accelerated particle irradiation equipment includes a particle accelerator and an irradiation device. The particle accelerator generates accelerated particles. The irradiation device performs irradiation of the accelerated particles generated by the particle accelerator, and is installed on at least one of the floor above and the floor below the floor on which the particle accelerator is installed.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 15, 2011
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Satoru YAJIMA, Toshiki TACHIKAWA
  • Publication number: 20110101246
    Abstract: Accelerated particle irradiation equipment, which performs irradiation of accelerated particles, includes an irradiation device and a building. The irradiation device includes a rotating unit rotatable about a rotation axis and performs irradiation of the accelerated particles generated by a particle accelerator. The building has an installation space in which the irradiation device is installed. The irradiation device is formed to be thin so as to have a small length in a direction of the rotation axis. A portion of the irradiation device, which has the maximum width in a radial direction orthogonal to the direction of the rotation axis, is disposed along the maximum width of the installation space.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 5, 2011
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Satoru YAJIMA, Toshiki TACHIKAWA
  • Publication number: 20100072389
    Abstract: The present invention provides a charged particle beam irradiating apparatus capable of simply preventing unevenness or reduction in a peripheral portion of the dose distribution of a charged particle beam. A charged particle beam irradiating apparatus includes scanning electromagnets that scan a charged particle beam and a control device that controls the operations of the scanning electromagnets. In the charged particle beam irradiating apparatus, the control unit changes a scanning speed when the charged particle beam is irradiated along an irradiation line such that a peripheral portion of the dose distribution of the charged particle beam is corrected.
    Type: Application
    Filed: March 26, 2009
    Publication date: March 25, 2010
    Inventors: Toshiki Tachikawa, Toru Asaba, Toshiaki Ochi
  • Publication number: 20090242789
    Abstract: The present invention provides a charged particle beam irradiating apparatus capable of irradiating a charged particle beam using both a wobbler method and a scanning method. A charged particle beam irradiating apparatus includes: scanning electromagnets that scan a charged particle beam; a wobbler irradiation unit that irradiates the charged particle beam using a wobbler method; a scanning irradiation unit that irradiates the charged particle beam using a scanning method; and a control unit that controls the wobbler irradiation unit and the scanning irradiation unit. In the charged particle beam irradiating apparatus, the control unit operates one of the wobbler irradiation unit and the scanning irradiation unit, and controls the other irradiation unit to be in a withdrawn state so as not to hinder the irradiation of the charged particle beam.
    Type: Application
    Filed: March 26, 2009
    Publication date: October 1, 2009
    Inventor: Toshiki TACHIKAWA
  • Publication number: 20020033456
    Abstract: A charged-particle beam irradiator is provided with a plurality of scan electromagnets and configured such that kicks provided by the plurality of scan electromagnets are superimposed to form a collimated irradiation field at an exit of a final deflection electromagnet. A collimated irradiation field is thereby implemented by scanning irradiation even with a high magnetic field being provided by the final deflection electromagnet.
    Type: Application
    Filed: July 13, 2001
    Publication date: March 21, 2002
    Inventors: Toshiki Tachikawa, Kenji Sawada