Patents by Inventor Ryuichi Toyama

Ryuichi Toyama 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: 10736499
    Abstract: A video processor receives first and second images respectively acquired by an endoscope at first and second timings before and after a predetermined function is applied to a subject, generates first and second correction images respectively using first and second images, generates first and second post-correction images respectively obtained by causing the first and second correction images to act on the first and second images, extracts color components in the second post-correction image to find first and second distribution characteristic values, and calculates a degree of change of the second distribution characteristic value from the first distribution characteristic value.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: August 11, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Momoko Yamanashi, Tetsuhiro Yamada, Toshio Nakamura, Ryuichi Toyama
  • Patent number: 10733734
    Abstract: An image analysis apparatus includes a processor including hardware. The processor extracts parts from each of a first image and a second image acquired after the first image, each of the extracted parts including an annular peripheral portion and a central portion having a color different from a color of the peripheral portion. The processor also sets the central portion as the analysis object region and calculates a brightness decrease degree of the analysis object region in the second image relative to the analysis object region in the first image.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: August 4, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Tetsuhiro Yamada, Momoko Yamanashi, Toshio Nakamura, Ryuichi Toyama
  • Patent number: 10572755
    Abstract: An image analysis apparatus includes a region extraction unit configured to determine, as analysis target regions, respective predetermined regions in a first image and a second image that are acquired at timings before and after execution of a predetermined action to a subject and inputted through an image input unit in a state where an endoscope is continuously inserted in the subject, a distribution characteristic value calculation unit configured to obtain a first distribution characteristic value by extracting a color component of the analysis target region in the first image, and to obtain a second distribution characteristic value by extracting a color component of the analysis target region in the second image, and an image analysis unit configured to calculate the degree of change in the second distribution characteristic value with respect to the first distribution characteristic value.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 25, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Momoko Yamanashi, Tetsuhiro Yamada, Toshio Nakamura, Ryuichi Toyama
  • Patent number: 10302618
    Abstract: The method for diagnosing the oil-filled electrical apparatus in the present invention is a method for diagnosing whether or not discharge has occurred inside the oil-filled electrical apparatus. The diagnosing method includes: an in-oil gases analyzing step of analyzing hydrogen gas and a gas selected from the group consisting of methane, ethane, ethylene, acetylene, hydrocarbon having a carbon number of 3 or 4, carbon monoxide, carbon dioxide, oxygen, and nitrogen, contained in an insulating oil used inside the oil-filled electrical apparatus; a step of analyzing a causative substance serving as a cause of generation of hydrogen in the insulating oil irrespective of whether or not the discharge has occurred; and a step of diagnosing whether or not the discharge has occurred based on an analysis result of the in-oil gases analyzing step and an analysis result of the step of analyzing the causative substance.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: May 28, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryota Kuriyama, Fukutaro Kato, Ryuichi Nishiura, Satoru Toyama, Kota Mizuno
  • Publication number: 20190122392
    Abstract: An image analyzing apparatus includes an image input portion, an image processor, a distribution characteristic value calculator, a recording portion, and a comparison information output portion. The image input portion inputs an endoscopic image. The image processor generates a brightness-corrected image. The endoscopic image is corrected to the brightness-corrected image wherein the brightness-corrected image includes a brightness distribution that being substantially uniform. The distribution characteristic value calculator extracts at least one of a red color component, a green color component, and a blue color component in the brightness-corrected image and determines a first distribution characteristic value of the extracted color component. The recording portion records information including a plurality of second distribution characteristic values.
    Type: Application
    Filed: November 15, 2018
    Publication date: April 25, 2019
    Applicant: Olympus Corporation
    Inventors: Momoko Yamanashi, Tetsuhiro Yamada, Toshio Nakamura, Ryuichi Toyama, Takeo Suzuki
  • Publication number: 20180333045
    Abstract: A video processor receives first and second images respectively acquired by an endoscope at first and second timings before and after a predetermined function is applied to a subject, generates first and second correction images respectively using first and second images, generates first and second post-correction images respectively obtained by causing the first and second correction images to act on the first and second images, extracts color components in the second post-correction image to find first and second distribution characteristic values, and calculates a degree of change of the second distribution characteristic value from the first distribution characteristic value.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 22, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Momoko YAMANASHI, Tetsuhiro YAMADA, Toshio NAKAMURA, Ryuichi TOYAMA
  • Publication number: 20180218233
    Abstract: An image analysis apparatus includes a region extraction unit configured to determine, as analysis target regions, respective predetermined regions in a first image and a second image that are acquired at timings before and after execution of a predetermined action to a subject and inputted through an image input unit in a state where an endoscope is continuously inserted in the subject, a distribution characteristic value calculation unit configured to obtain a first distribution characteristic value by extracting a color component of the analysis target region in the first image, and to obtain a second distribution characteristic value by extracting a color component of the analysis target region in the second image, and an image analysis unit configured to calculate the degree of change in the second distribution characteristic value with respect to the first distribution characteristic value.
    Type: Application
    Filed: March 27, 2018
    Publication date: August 2, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Momoko YAMANASHI, Tetsuhiro YAMADA, Toshio NAKAMURA, Ryuichi TOYAMA
  • Publication number: 20170358084
    Abstract: An image analysis apparatus includes: an image input section; a region extraction section configured to specify a target element including an annular peripheral portion and a center portion that is surrounded by the peripheral portion and that is in a color different from the peripheral portion in a first image and a second image inputted from the image input section, the second image being acquired later than the first image, and configured to extract only the center portion of the target element as a region to be analyzed; and a color component extraction section configured to extract respective color component values of the extracted regions to be analyzed of the first and second images.
    Type: Application
    Filed: August 2, 2017
    Publication date: December 14, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Tetsuhiro YAMADA, Momoko YAMANASHI, Toshio NAKAMURA, Ryuichi TOYAMA
  • Publication number: 20170337710
    Abstract: An image analysis apparatus includes: an image input section; a region extraction section configured to set an analysis object region for each of a first image and a second image acquired after the first image, the first image and the second image being inputted from the image input section; and an image analysis section configured to calculate a brightness decrease degree of a part of the analysis object region in the second image, the part having a brightness decreased relative to the analysis object region in the first image.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Tetsuhiro YAMADA, Momoko YAMANASHI, Toshio NAKAMURA, Ryuichi TOYAMA
  • Patent number: 8277374
    Abstract: A medical instrument of the present invention comprises a spiral shaped portion provided at an insertion portion main body, for generating a force at the insertion portion main body to advance/retreat in a subject by a contact with a body wall of the subject, a balloon provided so as to expand radially in a radial direction of the insertion portion main body and capable of contact with the body wall, a suction opening portion provided between the spiral shaped portion and the balloon in the insertion portion main body, and a suction pipeline communicating with the suction opening portion, inserted into the insertion portion main body and connected to a suction pressure controller on a rear end side of the insertion portion main body in the insertion direction.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: October 2, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Masayo Tsumaru, Ryuichi Toyama, Makoto Abe, Toshihiro Hadano, Ryosuke Ishizaki
  • Patent number: 7850678
    Abstract: An endoscope of the invention is the endoscope for applying a propulsion force in a direction of insertion axis of an insertion portion main body in accordance with rotation of the insertion portion main body based on driving force of a driving member, and the endoscope includes a flexible elongated inner layer tube configured as a shaft of the insertion portion; and a spiral-shaped portion rotatable around the inner layer tube as an axial center based on the driving force of a motor, the spiral-shaped portion forming an outer surface of the insertion portion main body, in which the spiral-shaped portion is formed by a nondensely wound coil and a resin thin film provided so as to cover gaps of a wire forming the metal coil.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: December 14, 2010
    Assignee: Olympus Medical Systems Corp.
    Inventor: Ryuichi Toyama
  • Publication number: 20090118582
    Abstract: A medical instrument of the present invention comprises a spiral shaped portion provided at an insertion portion main body, for generating a force at the insertion portion main body to advance/retreat in a subject by a contact with a body wall of the subject, a balloon provided so as to expand radially in a radial direction of the insertion portion main body and capable of contact with the body wall, a suction opening portion provided between the spiral shaped portion and the balloon in the insertion portion main body, and a suction pipeline communicating with the suction opening portion, inserted into the insertion portion main body and connected to a suction pressure controller on a rear end side of the insertion portion main body in the insertion direction.
    Type: Application
    Filed: October 29, 2008
    Publication date: May 7, 2009
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Masayo TSUMARU, Ryuichi TOYAMA, Makoto ABE, Toshihiro HADANO, Ryosuke ISHIZAKI
  • Publication number: 20090062611
    Abstract: The present invention is an endoscope apparatus comprising an over tube having a balloon, a fluid suction pipeline provided at the over tube so that a suction opening portion is opened on a proximal end side from the balloon, a suctioning device for suctioning a fluid in the fluid suction pipeline, a pressure/flow-rate sensor for detecting a pressure of the fluid at least at a single position from a lumen to which the over tube is inserted to the suctioning device through the fluid suction pipeline, and a control circuit for controlling a suction pump so that the pressure of the fluid in the lumen in the vicinity of the suction opening portion falls within an appropriate pressure range based on the pressure detected by the pressure/flow-rate sensor.
    Type: Application
    Filed: August 5, 2008
    Publication date: March 5, 2009
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventor: Ryuichi TOYAMA
  • Publication number: 20090030277
    Abstract: To realize an endoscope insertion portion and endoscope system capable of providing a significant propulsive function by reducing a friction between a propulsive force generation section and an insertion portion, an endoscope insertion portion comprising: an introductory tube as an insertion portion; a spiral tube as a propulsive force generation section mounted on an outer peripheral surface of the introductory tube and rotating around the longitudinal axis of the introductory tube; and a plurality of ring members provided on an outer peripheral surface of an elastic cover tube at predetermined intervals between an inner peripheral surface of a spiral tube and the elastic cover tube 21, as a friction reduction section positioned between the spiral tube and the outer peripheral surface of the introductory tube (elastic cover tube) and reducing a contact resistance between an outer peripheral surface of the introductory tube (elastic cover tube) and the spiral tube.
    Type: Application
    Filed: March 31, 2006
    Publication date: January 29, 2009
    Inventors: Ryuhei Fujimoto, Yasuhito Kura, Ryuichi Toyama, Katsutaka Adachi
  • Publication number: 20080294008
    Abstract: An endoscope according to the present invention includes an insertion portion that is inserted into a duct, an observation window provided at a distal end in the insertion direction of the insertion portion for observing the inside of the duct, a balloon provided so as to extend in a radial shape in a diametrical direction of the insertion portion with respect to the insertion portion and which contacts an inner wall of the duct to fix the insertion portion to the inner wall, and a plurality of suction holes that are provided at a position that is further on the distal end side in the insertion direction than the balloon while being closer to a proximal end side in the insertion direction than the observation window in the insertion portion and that suck in dirt removed from the inner wall by contact between the balloon and the inner wall.
    Type: Application
    Filed: May 13, 2008
    Publication date: November 27, 2008
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventor: Ryuichi TOYAMA
  • Publication number: 20070167674
    Abstract: An endoscope of the invention is the endoscope for applying a propulsion force in a direction of insertion axis of an insertion portion main body in accordance with rotation of the insertion portion main body based on driving force of a driving member, and the endoscope includes a flexible elongated inner layer tube configured as a shaft of the insertion portion; and a spiral-shaped portion rotatable around the inner layer tube as an axial center based on the driving force of a motor, the spiral-shaped portion forming an outer surface of the insertion portion main body, in which the spiral-shaped portion is formed by a nondensely wound coil and a resin thin film provided so as to cover gaps of a wire forming the metal coil.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 19, 2007
    Inventor: Ryuichi Toyama
  • Publication number: 20070167684
    Abstract: An endoscope device includes an insertion portion cover as an insertion portion main body insertable into an examinee's body and having flexibility, and a helical shaped portion as a propulsion force generating portion which is rotatably placed around an outer circumference of the insertion portion cover, centered around the axis thereof, and formed in a clockwise winding toward a distal end side of the insertion portion cover. The endoscope device can thus achieve good operationality of the insertion portion, low cost, and improved insertability into a deep part in a body cavity without inflicting a pain on a patient.
    Type: Application
    Filed: January 3, 2007
    Publication date: July 19, 2007
    Applicant: Olympus Medical Systems Corp.
    Inventor: Ryuichi Toyama
  • Publication number: 20070149852
    Abstract: An endoscope is provided which has good operability, such as ease of varying the rigidity of an insertion portion, as well as a lighter-weight bending mechanism for changing the shape of a bending portion. The endoscope according to the present invention comprises an insertion portion to be inserted into a subject, an electroconductive expanding/contracting member which can expand/contract the insertion portion in the lengthwise direction and which is for expanding/contracting according to the state of voltage application, and electrodes for applying the voltage supplied from a power source to the electroconductive expanding/contracting member.
    Type: Application
    Filed: March 6, 2007
    Publication date: June 28, 2007
    Inventors: Toshiaki NOGUCHI, Sumihiro UCHIMURA, Tatsuya FURUKAWA, Masahiro KAWAUCHI, Fumiyuki ONODA, Hiroki MORIYAMA, Ryuichi TOYAMA, Hiroshi NIWA, Hisashi KUROSHIMA, Hitoshi HASEGAWA, Eiri SUZUKI, Akio OGAWA, Masanori GOCHO, Noriaki ITO, Satoshi ITOYA
  • Publication number: 20070149855
    Abstract: An endoscope includes an image capturing unit which is provided with at least a plurality of optical lenses, a zoom lens frame for supporting the optical lenses for zooming out of the plurality of optical lenses, and a first actuator for moving forward and reversely the zoom lens frame in an optical axis direction. The first actuator extends or contracts in accordance with an interruption of power supply.
    Type: Application
    Filed: March 7, 2007
    Publication date: June 28, 2007
    Inventors: Toshiaki NOGUCHI, Sumihiro UCHIMURA, Tatsuya FURUKAWA, Masahiro KAWAUCHI, Fumiyuki ONODA, Hiroki MORIYAMA, Ryuichi TOYAMA
  • Publication number: 20070112250
    Abstract: An insertion support tool which is detachably attached to a large-intestine endoscope including an elongated inserting portion which is inserted into a lumen is provided, and an external sheath which is extendable and contractible in an inserting direction of the inserting portion and a cover member which is arranged outside the external sheath and held in a state where it covers the external sheath when the external sheath is contracted are provided to this insertion support tool.
    Type: Application
    Filed: November 16, 2005
    Publication date: May 17, 2007
    Inventors: Yasuhito Kura, Katsutaka Adachi, Shigeki Matsuo, Tsutomu Ishiguro, Ryuichi Toyama