Patents by Inventor Takahiro Yagi

Takahiro Yagi 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: 20200000482
    Abstract: A filter device is capable of reliably capturing emboli and air bubbles and reliably removing the captured emboli out of the body. The filter device includes: a first tube; a second tube protruding from the first tube; a filter arranged such that the distal end side of the filter in the longitudinal direction forms an opening; a ring fixed to the opening; first wires protruding from the distal end side of the first tube in the longitudinal direction thereof; and second wires protruding from holes in the first tube and fixed to the ring; wherein the opening can be opened and closed in the form of a bag when the proximal end side of the filter in the longitudinal direction is defined as the bottom, and the opening can be closed by pulling the second tube towards the proximal end side in the longitudinal direction.
    Type: Application
    Filed: March 13, 2018
    Publication date: January 2, 2020
    Inventors: Hajime Sakakibara, Takahiro Yagi
  • Patent number: 10342959
    Abstract: A balloon catheter includes an inner cylinder shaft having a small-diameter inner cylinder section in a tip side and a large-diameter inner cylinder section in a base-end side; an outer cylinder shaft with the inner cylinder shaft in its lumen; a balloon whose tip is fixed at a tip of the inner cylinder shaft, and whose base end is fixed at the tip of the outer cylinder shaft, wherein the outer cylinder shaft and the inner cylinder shaft slide over each other and cause a shape change between a normal balloon shape and an extended balloon shape; and a housing communicating with the lumen of the outer cylinder shaft, and having a small-diameter lumen in the tip side and a large-diameter lumen in the base-end side; wherein the housing has an insertion inlet for insertion of the inner cylinder shaft, and a liquid inlet/outlet.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: July 9, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Takahiro Yagi, Akinori Matsukuma, Motoki Takaoka, Chigusa Kamemoto
  • Patent number: 10098725
    Abstract: An endovascular treatment aiding device is an endovascular treatment aiding device including a flexible shaft; a filter fixed to the shaft such that an opening section is formed in the proximal side, wherein a ring having elastic restoring force is fixed to the opening section, which filter is capable of being opened and closed in an umbrella-like manner, and is in a conical shape having a bottom formed by the ring when the filter is open; and a linear supporting member fixed to the ring and a part of the shaft such that they are connected to each other, which linear supporting member enables closing the filter by application of an external force to the proximal side; wherein coils formed with a radio-opaque material is/are wound around the ring; when the filter is closed, a plurality of mountains pointing toward the distal side and a plurality of valleys pointing toward the proximal side are alternately formed in the ring to form a shape in which the mountains are positioned close to each other, and the vall
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: October 16, 2018
    Assignees: Toray Industries, Inc.
    Inventors: Kanji Inoue, Takahiro Yagi, Masaki Fujita, Koji Kadowaki, Kazuhiro Tanahashi
  • Patent number: 10101283
    Abstract: A nuclear material within a container is to be detected. Included are: a neutron source for generating neutrons emitted toward the container; a detection section capable of detecting neutrons including primary neutrons emitted from the neutron source and secondary neutrons generated through a nuclear fission reaction of the nuclear material; and a processing section for performing a reactor noise analysis process based on data obtained through detecting of neutrons by the detection section. The neutron source generates neutrons in a pulsatile manner. The processing section performs the reactor noise analysis process based on data obtained by excluding, from time series data obtained through detecting of neutrons by the detection section, data of a time range including a generation time of the neutrons generated by the neutron source in the pulsatile manner.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: October 16, 2018
    Assignee: KYOTO UNIVERSITY
    Inventors: Kai Masuda, Tsuyoshi Misawa, Yoshiyuki Takahashi, Takahiro Yagi
  • Patent number: 10073047
    Abstract: A nuclear material within a container is to be detected. Included are: a neutron source for generating neutrons emitted toward the container; a detection section capable of detecting neutrons including primary neutrons emitted from the neutron source and secondary neutrons generated through a nuclear fission reaction of the nuclear material; and a processing section for performing a reactor noise analysis process based on data obtained through detecting of neutrons by the detection section. The neutron source generates neutrons in a pulsatile manner. The processing section performs the reactor noise analysis process based on data obtained by excluding, from time series data obtained through detecting of neutrons by the detection section, data of a time range including a generation time of the neutrons generated by the neutron source in the pulsatile manner.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: September 11, 2018
    Assignee: KYOTO UNIVERSITY
    Inventors: Kai Masuda, Tsuyoshi Misawa, Yoshiyuki Takahashi, Takahiro Yagi
  • Patent number: 9733636
    Abstract: A remote unit (1) that controls a control target (4) on the basis of a command from a CPU unit (2) is provided with: an external input section (11) to receive a detection result of a state of the control target from a detection means (3) that detects the state of the control target; an output section (13) to output a control output for controlling the control target; and an abnormality determining section (12) to determine an abnormality of the control target on the basis of the detection result and to output to the output section, a control instruction to instruct a change or a stop of the control output if the control target is determined to be abnormal.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 15, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takahiro Yagi
  • Publication number: 20170128702
    Abstract: A balloon catheter includes an inner cylinder shaft having a small-diameter inner cylinder section in a tip side and a large-diameter inner cylinder section in a base-end side; an outer cylinder shaft with the inner cylinder shaft in its lumen; a balloon whose tip is fixed at a tip of the inner cylinder shaft, and whose base end is fixed at the tip of the outer cylinder shaft, wherein the outer cylinder shaft and the inner cylinder shaft slide over each other and cause a shape change between a normal balloon shape and an extended balloon shape; and a housing communicating with the lumen of the outer cylinder shaft, and having a small-diameter lumen in the tip side and a large-diameter lumen in the base-end side; wherein the housing has an insertion inlet for insertion of the inner cylinder shaft, and a liquid inlet/outlet.
    Type: Application
    Filed: March 31, 2015
    Publication date: May 11, 2017
    Inventors: Takahiro Yagi, Akinori Matsukuma, Motoki Takaoka, Chigusa Kamemoto
  • Publication number: 20170065397
    Abstract: An endovascular treatment aiding device is an endovascular treatment aiding device including a flexible shaft; a filter fixed to the shaft such that an opening section is formed in the proximal side, wherein a ring having elastic restoring force is fixed to the opening section, which filter is capable of being opened and closed in an umbrella-like manner, and is in a conical shape having a bottom formed by the ring when the filter is open; and a linear supporting member fixed to the ring and a part of the shaft such that they are connected to each other, which linear supporting member enables closing the filter by application of an external force to the proximal side; wherein coils formed with a radio-opaque material is/are wound around the ring; when the filter is closed, a plurality of mountains pointing toward the distal side and a plurality of valleys pointing toward the proximal side are alternately formed in the ring to form a shape in which the mountains are positioned close to each other, and the vall
    Type: Application
    Filed: May 8, 2015
    Publication date: March 9, 2017
    Applicant: Toray Industries, Inc.
    Inventors: Kanji Inoue, Takahiro Yagi, Masaki Fujita, Koji Kadowaki, Kazuhiro Tanahashi
  • Publication number: 20170049552
    Abstract: A treatment aiding device includes a flexible shaft; a filter; linear supporting members; an elastomer member composed of an elastomer in which a penetrating hole is formed, which elastomer member is arranged in the proximal side relative to the opening section of the filter such that the shaft penetrates the penetrating hole, wherein the outer diameter of the end face in which the penetrating hole is formed is larger than the outer diameter of the opening-section side of the filter when the filter is closed; and an outer tube in which a penetrating hole is formed, which outer tube is arranged in the proximal side relative to the opening section of the filter such that the shaft penetrates the penetrating hole in a state which allows movement of the shaft in the longitudinal direction; wherein the elastomer member is fixed in the distal side of the outer tube.
    Type: Application
    Filed: May 8, 2015
    Publication date: February 23, 2017
    Inventors: Kanji Inoue, Takahiro Yagi, Masaki Fujita, Koji Kadowaki, Kazuhiro Tanahashi
  • Publication number: 20170003525
    Abstract: A main object is to provide a light controlling sheet and a light controlling plate each excellent in weatherability and endurance. An embodiment of the invention is a light controlling sheet including the following: a light controlling layer in which two or more regions for changing a polarization state or phase state of transmitted light are each formed into a constant shape at a constant interval; an adhesive layer formed on the light controlling layer; a migration preventing layer formed on the adhesive layer; and a weatherable adhesive layer including a weatherable agent formed on the migration preventing layer.
    Type: Application
    Filed: January 23, 2015
    Publication date: January 5, 2017
    Inventors: Masahiro Tatsuzawa, Takahiro Yagi, Keiichi Murakami, Yuki Kumagai
  • Publication number: 20160287323
    Abstract: A balloon ablation catheter includes a catheter shaft containing a reinforcement wire in a thick section; a balloon provided at an end of the catheter shaft; and a high-frequency electric current electrode arranged in the balloon; which balloon ablation catheter satisfies L>t, wherein L represents the shortest distance from the surface of the reinforcement wire to the surface of the catheter shaft, and t represents the wall thickness of the thinnest portion of the balloon.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 6, 2016
    Inventors: Takahiro Yagi, Motoki Takaoka, Akinori Matsukuma
  • Patent number: 9439725
    Abstract: A balloon ablation catheter achieves reduction in diameter of the balloon upon balloon contraction and increased reliability of the thermocouple temperature sensor, which balloon ablation catheter is less likely to be influenced by the heating liquid discharged into the balloon and able to control the balloon surface temperature with high accuracy.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: September 13, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Harada, Motoki Takaoka, Akinori Matsukuma, Takahiro Yagi
  • Patent number: 9393065
    Abstract: Provided is an ablation catheter system with a balloon which can improve the effect of therapy by ablation by eliminating variation in the surface temperature of a balloon in the ablation catheter with a balloon which cauterizes the tissue. An ablation catheter system with a balloon comprising a catheter shaft, a balloon fixed to the catheter shaft, a lumen which penetrates the catheter shaft in the direction of the long axis and communicates with the interior of the balloon, a heating electrode arranged in the balloon, a heating device which applies electrical energy to the heating electrode, and a vibration imparting device which imparts a vibration to the heating liquid by periodically repeating suction and ejection of the heating liquid from the lumen.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: July 19, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Motoki Takaoka, Akinori Matsukuma, Takahiro Yagi
  • Patent number: 9386813
    Abstract: There is provided a mask that includes a mask body and two strings. The two strings hold the mask body at a predetermined position on the face of a wearer by being caught by both ears or the head of the wearer. Folded portions, which are adapted so as to be capable of rising and falling on the surface of the mask body coming into contact with the face of the wearer, are formed on both sides of the mask body.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: July 12, 2016
    Assignee: San-M Package Co., Ltd.
    Inventors: Shogo Nagao, Takahiro Yagi
  • Patent number: 9351784
    Abstract: The stirring efficiency of a heating liquid which is supplied to the balloon of a balloon-equipped ablation catheter is increased to quickly uniformize the surface temperature of the balloon, and air is prevented from remaining in the balloon-equipped ablation catheter to enhance the safety of treatment which uses the balloon-equipped ablation catheter. A shaft for a balloon-equipped ablation catheter, consisting of a single pipe, wherein the shaft has two lumens which communicate from the distal end to the proximal end of the shaft, a first lumen being a guide wire passage lumen which is provided in order to allow a guide wire to pass therethrough, the second lumen being a liquid supply lumen which is provided in order to supply liquid to the inside of the balloon of the balloon-equipped ablation catheter.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 31, 2016
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takahiro Yagi, Motoki Takaoka, Akinori Matsukuma
  • Publication number: 20160116895
    Abstract: A remote unit (1) that controls a control target (4) on the basis of a command from a CPU unit (2) is provided with: an external input section (11) to receive a detection result of a state of the control target from a detection means (3) that detects the state of the control target; an output section (13) to output a control output for controlling the control target; and an abnormality determining section (12) to determine an abnormality of the control target on the basis of the detection result and to output to the output section, a control instruction to instruct a change or a stop of the control output if the control target is determined to be abnormal.
    Type: Application
    Filed: June 26, 2013
    Publication date: April 28, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventor: Takahiro YAGI
  • Patent number: 9144458
    Abstract: In order to perform balloon ablation and spot ablation by one ablation catheter without exchanging an ablation catheter body at the time of treatment by catheter ablation, an ablation catheter with a balloon is provided with a catheter shaft, a balloon which is mounted to the front end side in the longitudinal direction of the catheter shaft, a lumen which communicates with the balloon from the end face on the back end side in the abovementioned longitudinal direction, an in-balloon electrode and an in-balloon temperature sensor which are disposed in the balloon, and a front end electrode and a front end temperature sensor which are mounted in a front end region including the end face on the front end side in the abovementioned longitudinal direction.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: September 29, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Motoki Takaoka, Akinori Matsukuma, Takahiro Yagi
  • Publication number: 20150192530
    Abstract: A nuclear material within a container is to be detected. Included are: a neutron source for generating neutrons emitted toward the container; a detection section capable of detecting neutrons including primary neutrons emitted from the neutron source and secondary neutrons generated through a nuclear fission reaction of the nuclear material; and a processing section for performing a reactor noise analysis process based on data obtained through detecting of neutrons by the detection section. The neutron source generates neutrons in a pulsatile manner. The processing section performs the reactor noise analysis process based on data obtained by excluding, from time series data obtained through detecting of neutrons by the detection section, data of a time range including a generation time of the neutrons generated by the neutron source in the pulsatile manner.
    Type: Application
    Filed: August 28, 2013
    Publication date: July 9, 2015
    Inventors: Kai Masuda, Tsuyoshi Misawa, Yoshiyuki Takahashi, Takahiro Yagi
  • Patent number: 8894588
    Abstract: Provided is a guide wire, wherein a deformed portion formed by bending and/or curving the guide wire is located in the region of 20-100 mm from the tip in the longitudinal direction of the guide wire, and in the deformed portion, the shortest distance between the central axis in the longitudinal direction of the guide wire and a point that is the farthest in the direction perpendicular to the central axis is longer than or equal to the minimum inside diameter of a lumen of a catheter shaft of an ablation catheter with a balloon used in combination with the guide wire, and shorter than or equal to 40 mm.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 25, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Akinori Matsukuma, Motoki Takaoka, Takahiro Yagi
  • Publication number: 20140114306
    Abstract: A balloon ablation catheter achieves reduction in diameter of the balloon upon balloon contraction and increased reliability of the thermocouple temperature sensor, which balloon ablation catheter is less likely to be influenced by the heating liquid discharged into the balloon and able to control the balloon surface temperature with high accuracy.
    Type: Application
    Filed: June 8, 2012
    Publication date: April 24, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Hiroyuki Harada, Motoki Takaoka, Akinori Matsukuma, Takahiro Yagi