Patents by Inventor Tatsuo Nishihara

Tatsuo Nishihara 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: 11464441
    Abstract: A myocardial excitation complementation/visualization apparatus includes an acquiring section that acquires intracardiac electrocardiograms of a subject, the intracardiac electrocardiograms being recorded by a recording unit having a plurality of electrodes, a processing section that performs a computation for completing and visualizing a state of excitation in a myocardium of the subject based on the intracardiac electrocardiograms, and a displaying section that displays the state of excitation in the myocardium of the subject based on an output of the processing section. The processing section includes a first generating section, a correcting section, a second generating section, and a third generating section. The displaying section displays a change of the state of excitation in the myocardium of the subject based on the visualized data.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: October 11, 2022
    Assignees: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi Ashihara, Koji Takizawa, Tatsuo Nishihara, Nobuhiro Suzuki, Yuuho Iwanaga, Akio Ota, Takeshi Tsuchiya, Kazuo Nakazawa, Shin Inada
  • Patent number: 10898098
    Abstract: A myocardial excitation determining apparatus which can support the determination of excitation dynamics of the myocardium during atrial fibrillation is provided. A myocardial excitation determining apparatus has: an acquiring section 2 which acquires an intracardiac electrocardiogram of a subject; a processing section 3 which computes to produce visualized data indicating a state of excitation in the myocardium, based on the intracardiac electrocardiogram; and a determining section 4 which determines the type of excitation dynamics of the myocardium based on the visualized data.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: January 26, 2021
    Assignees: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, Takeshi TSUCHIYA, NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi Ashihara, Koji Takizawa, Tatsuo Nishihara, Nobuhiro Suzuki, Yuuho Iwanaga, Akio Ota, Takeshi Tsuchiya, Kazuo Nakazawa, Shin Inada
  • Publication number: 20200221964
    Abstract: A myocardial excitation complementation/visualization apparatus includes an acquiring section that acquires intracardiac electrocardiograms of a subject, the intracardiac electrocardiograms being recorded by a recording unit having a plurality of electrodes, a processing section that performs a computation for completing and visualizing a state of excitation in a myocardium of the subject based on the intracardiac electrocardiograms, and a displaying section that displays the state of excitation in the myocardium of the subject based on an output of the processing section. The processing section includes a first generating section, a correcting section, a second generating section, and a third generating section. The displaying section displays a change of the state of excitation in the myocardium of the subject based on the visualized data.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Applicants: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, Takeshi TSUCHIYA, NATIONAL CERERAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi ASHIHARA, Koji Takizawa, Tatsuo Nishihara, Nobuhiro Suzuki, Yuuho Iwanaga, Akio Ota, Takeshi Tsuchiya, Kazuo Nakazawa, Shin Inada
  • Patent number: 10624555
    Abstract: A myocardial excitation complementation/visualization apparatus includes an acquiring section that acquires intracardiac electrocardiograms of a subject, the intracardiac electrocardiograms being recorded by a recording unit having a plurality of electrodes, a processing section that performs a computation for completing and visualizing a state of excitation in a myocardium of the subject based on the intracardiac electrocardiograms, and a displaying section that displays the state of excitation in the myocardium of the subject based on an output of the processing section. The processing section includes a first generating section, a correcting section, a second generating section, and a third generating section. The displaying section displays a change of the state of excitation in the myocardium of the subject based on the visualized data.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: April 21, 2020
    Assignees: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi Ashihara, Koji Takizawa, Tatsuo Nishihara, Nobuhiro Suzuki, Yuuho Iwanaga, Akio Ota, Takeshi Tsuchiya, Kazuo Nakazawa, Shin Inada
  • Publication number: 20190076041
    Abstract: A myocardial excitation determining apparatus which can support the determination of excitation dynamics of the myocardium during atrial fibrillation is provided. A myocardial excitation determining apparatus has: an acquiring section 2 which acquires an intracardiac electrocardiogram of a subject; a processing section 3 which computes to produce visualized data indicating a state of excitation in the myocardium, based on the intracardiac electrocardiogram; and a determining section 4 which determines the type of excitation dynamics of the myocardium based on the visualized data.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 14, 2019
    Applicants: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi ASHIHARA, Koji TAKIZAWA, Tatsuo NISHIHARA, Nobuhiro SUZUKI, Yuuho IWANAGA, Akio OTA, Takeshi TSUCHIYA, Kazuo NAKAZAWA, Shin INADA
  • Publication number: 20180289278
    Abstract: A cardiac catheter inspection apparatus comprising: an acquiring section (31) which is configured to acquire a first waveform of heart beats during sinus rhythm, and an arrhythmia waveform during arrhythmia; a measuring section (31) which is configured to measure a second electrocardiogram; a first calculating section (32) which is configured to calculate correction coefficients for statistically matching the first electrocardiogram and the second electrocardiogram with each other; a waveform producing section (34) which is configured to produce a comparison waveform that functions as an object to be compared with a response waveform of pacing performed by a cardiac catheter; and a second calculating section (36) which is configured to calculate a matching rate of the response waveform and the comparison waveform.
    Type: Application
    Filed: January 5, 2016
    Publication date: October 11, 2018
    Applicants: NIHON KOHDEN CORPORATION, NATIONAL CEREBRAL & CARDIOVASCULAR CENTER
    Inventors: Kazuo NAKAZAWA, Shin INADA, Tatsuo NISHIHARA, Koji TAKIZAWA, Hiroki YUZE, Naoki KOURA
  • Publication number: 20180070844
    Abstract: A myocardial excitation complementation/visualization apparatus includes an acquiring section that acquires intracardiac electrocardiograms of a subject, the intracardiac electrocardiograms being recorded by a recording unit having a plurality of electrodes, a processing section that performs a computation for completing and visualizing a state of excitation in a myocardium of the subject based on the intracardiac electrocardiograms, and a displaying section that displays the state of excitation in the myocardium of the subject based on an output of the processing section. The processing section includes a first generating section, a correcting section, a second generating section, and a third generating section. The displaying section displays a change of the state of excitation in the myocardium of the subject based on the visualized data.
    Type: Application
    Filed: March 15, 2016
    Publication date: March 15, 2018
    Applicants: SHIGA UNIVERSITY OF MEDICAL SCIENCE, NIHON KOHDEN CORPORATION, NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER
    Inventors: Takashi ASHIHARA, Koji TAKIZAWA, Tatsuo NISHIHARA, Nobuhiro SUZUKI, Yuuho IWANAGA, Akio OTA, Takeshi TSUCHIYA, Kazuo NAKAZAWA, Shin INADA
  • Patent number: 9792679
    Abstract: A diagnosis assistance apparatus for assisting a diagnosis using schemas includes a storage section that stores a plurality of different schemas each configured by a figure representing a body region, an acquiring section that acquires results of a plurality of examinations that are performed on an examination target, a schema refining section that refines a schema of a body region related to a disease that is predicted from the acquired examination results, from the schemas step-by-step in accordance with progress of the examinations, and a displaying section that displays the schema refined by the schema refining section.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: October 17, 2017
    Assignees: NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER, Nihon Kohden Corporation
    Inventors: Kazuo Nakazawa, Michiaki Iwata, Miyuki Hayashi, Tatsuo Yoshida, Tatsuo Nishihara, Koji Takizawa
  • Patent number: 9782100
    Abstract: A bio-information analysis device includes a measuring unit that measures biometric waveforms of a subject, and a calculating unit that calculates a matching rate of the biometric waveforms based on shapes and magnitudes of the biometric waveforms measured by the measuring unit. In the bio-information analysis device, the biometric waveforms may be electrocardiogram waveforms.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 10, 2017
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Koji Takizawa, Tatsuo Nishihara, Naoki Koura, Yuuho Iwanaga, Naoki Hattori
  • Patent number: 9743846
    Abstract: A non-invasive venous pressure measurement apparatus is provided, including: a first cuff attached to a portion including a vein and an artery in a living body; a pressure control unit that changes a first applied pressure applied by the cuff to the portion; a pulse wave detection unit that detects a pulse wave from a pressure received by the cuff from the portion; another pulse wave detection unit that detects another pulse wave including at least an arterial pulse wave in another portion of the living body; an analyzing unit that analyzes a correlation between the two pulse waves, which are changed as the applied pressure is changed by the pressure control unit changes; and a venous pressure calculation unit that calculates a venous pressure based on the applied pressure and a result of analysis by the analyzing unit.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 29, 2017
    Assignee: Nihon Kohden Corporation
    Inventors: Teiji Ukawa, Tsuneo Takayanagi, Haruka Morimoto, Tatsuo Nishihara, Tatsuo Yoshida, Shiro Adachi, Mitsushi Hyogo
  • Patent number: 9368327
    Abstract: A high-energy ion implanter includes: a beam generation unit that includes an ion source and a mass analyzer; a high-energy multi-stage linear acceleration unit that accelerates an ion beam so as to generate a high-energy ion beam; a high-energy beam deflection unit that changes the direction of the high-energy ion beam toward the wafer; and a beam transportation unit that transports the deflected high-energy ion beam to the wafer. The deflection unit is configured by a plurality of deflection electromagnets, and at least a horizontal focusing element is inserted between the plurality of deflection electromagnets.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: June 14, 2016
    Assignee: Sumitomo Heavy Industries Ion Technology Co., Ltd.
    Inventors: Mitsuaki Kabasawa, Tatsuo Nishihara, Kazuhiro Watanabe, Yuuji Takahashi, Tatsuya Yamada
  • Publication number: 20150250400
    Abstract: A bio-information analysis device includes a measuring unit that measures biometric waveforms of a subject, and a calculating unit that calculates a matching rate of the biometric waveforms based on shapes and magnitudes of the biometric waveforms measured by the measuring unit. In the bio-information analysis device, the biometric waveforms may be electrocardiogram waveforms.
    Type: Application
    Filed: February 26, 2015
    Publication date: September 10, 2015
    Inventors: Koji Takizawa, Tatsuo Nishihara, Naoki Koura, Yuuho Iwanaga, Naoki Hattori
  • Patent number: 8952340
    Abstract: A high-frequency acceleration type ion acceleration and transportation apparatus is a beamline after an ion beam is accelerated by a high-frequency acceleration system having an energy spread with respect to set beam energy and includes an energy analysis deflection electromagnet and a horizontal beam focusing element. In the ion acceleration and transportation apparatus, a double slit that is configured by an energy spread confining slit and an energy analysis slit is additionally disposed at a position at which energy dispersion and a beam size are to be appropriate. The position is determined based on a condition of the energy analysis deflection electromagnet and the horizontal beam focusing element, and the double slit performs energy separation and energy definition and decreases the energy spread of the ion beam by performing adjustment for a smaller energy spread while suppressing a decrease in the amount of a beam current.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 10, 2015
    Assignee: SEN Corporation
    Inventors: Mitsuaki Kabasawa, Tatsuo Nishihara, Kazuhiro Watanabe, Yuuji Takahashi, Tatsuya Yamada
  • Publication number: 20140374617
    Abstract: A high-frequency acceleration type ion acceleration and transportation apparatus is a beamline after an ion beam is accelerated by a high-frequency acceleration system having an energy spread with respect to set beam energy and includes an energy analysis deflection electromagnet and a horizontal beam focusing element. In the ion acceleration and transportation apparatus, a double slit that is configured by an energy spread confining slit and an energy analysis slit is additionally disposed at a position at which energy dispersion and a beam size are to be appropriate. The position is determined based on a condition of the energy analysis deflection electromagnet and the horizontal beam focusing element, and the double slit performs energy separation and energy definition and decreases the energy spread of the ion beam by performing adjustment for a smaller energy spread while suppressing a decrease in the amount of a beam current.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 25, 2014
    Inventors: Mitsuaki Kabasawa, Tatsuo Nishihara, Kazuhiro Watanabe, Yuuji Takahashi, Tatsuya Yamada
  • Patent number: 8918167
    Abstract: An RI measurement/notification apparatus includes: a displaying section configured to display waveform data of an intracardiac electrocardiogram; a waveform data acquiring section configured to acquire waveform data in a preset waveform data acquisition time period from an intracardiac electrocardiogram during atrial fibrillation; an RI calculating section configured to calculate an RI value based on the waveform data acquired by the waveform data acquiring section; and a notifying section configured to, in a case where the RI value calculated by the RI calculating section exceeds a preset threshold, notify that the value exceeds the threshold.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: December 23, 2014
    Assignee: Nihon Kohden Corporation
    Inventors: Koji Takizawa, Tatsuo Nishihara, Yuuho Iwanaga
  • Publication number: 20140366801
    Abstract: A high-energy ion implanter includes: a beam generation unit that includes an ion source and a mass analyzer; a high-energy multi-stage linear acceleration unit that accelerates an ion beam so as to generate a high-energy ion beam; a high-energy beam deflection unit that changes the direction of the high-energy ion beam toward the wafer; and a beam transportation unit that transports the deflected high-energy ion beam to the wafer. The deflection unit is configured by a plurality of deflection electromagnets, and at least a horizontal focusing element is inserted between the plurality of deflection electromagnets.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 18, 2014
    Inventors: Mitsuaki Kabasawa, Tatsuo Nishihara, Kazuhiro Watanabe, Yuuji Takahashi, Tatsuya Yamada
  • Publication number: 20140369589
    Abstract: A diagnosis assistance apparatus for assisting a diagnosis using schemas includes a storage section that stores a plurality of different schemas each configured by a figure representing a body region, an acquiring section that acquires results of a plurality of examinations that are performed on an examination target, a schema refining section that refines a schema of a body region related to a disease that is predicted from the acquired examination results, from the schemas step-by-step in accordance with progress of the examinations, and a displaying section that displays the schema refined by the schema refining section.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 18, 2014
    Applicants: NATIONAL CEREBRAL AND CARDIOVASCULAR CENTER, Nihon Kohden Corporation
    Inventors: Kazuo NAKAZAWA, Michiaki IWATA, Miyuki HAYASHI, Tatsuo YOSHIDA, Tatsuo NISHIHARA, Koji TAKIZAWA
  • Patent number: 8825147
    Abstract: A cardiac muscle excitation waveform detector including: a waveform acquisition section that acquires, in a preset period, a waveform from an intracardiac electrocardiogram measured in middle of occurrence of atrial fibrillation; a waveform detection condition setting section that sets conditions for detecting a waveform of cardiac muscle excitation; and an excitation waveform detection section that detects a waveform of cardiac muscle excitation from the waveforms based on the conditions, wherein the waveform detection condition setting section includes a section that sets conditions based on a contour of a waveform to detect candidates for the waveform of cardiac muscle excitation, a section that sets a search period for searching for a waveform of cardiac muscle excitation; and a section that sets a preset period subsequent to detection as a detection exclusion period during which the candidate waveforms are not detected when the waveform of cardiac muscle excitation is detected.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: September 2, 2014
    Assignee: Nihon Kohden Corporation
    Inventors: Koji Takizawa, Tatsuo Nishihara, Yuuho Iwanaga, Satoshi Suzuki, Naoki Hattori, Hiroki Yuze
  • Patent number: RE48076
    Abstract: A non-invasive venous pressure measurement apparatus is provided, including: a first cuff attached to a portion including a vein and an artery in a living body; a pressure control unit that changes a first applied pressure applied by the cuff to the portion; a pulse wave detection unit that detects a pulse wave from a pressure received by the cuff from the portion; another pulse wave detection unit that detects another pulse wave including at least an arterial pulse wave in another portion of the living body; an analyzing unit that analyzes a correlation between the two pulse waves, which are changed as the applied pressure is changed by the pressure control unit changes; and a venous pressure calculation unit that calculates a venous pressure based on the applied pressure and a result of analysis by the analyzing unit.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: July 7, 2020
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Teiji Ukawa, Tsuneo Takayanagi, Haruka Morimoto, Tatsuo Nishihara, Tatsuo Yoshida, Shiro Adachi, Mitsushi Hyogo
  • Patent number: RE49055
    Abstract: A non-invasive venous pressure measurement apparatus is provided, including: a first cuff attached to a portion including a vein and an artery in a living body; a pressure control unit that changes a first applied pressure applied by the cuff to the portion; a pulse wave detection unit that detects a pulse wave from a pressure received by the cuff from the portion; another pulse wave detection unit that detects another pulse wave including at least an arterial pulse wave in another portion of the living body; an analyzing unit that analyzes a correlation between the two pulse waves, which are changed as the applied pressure is changed by the pressure control unit changes; and a venous pressure calculation unit that calculates a venous pressure based on the applied pressure and a result of analysis by the analyzing unit.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: May 3, 2022
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Teiji Ukawa, Tsuneo Takayanagi, Haruka Morimoto, Tatsuo Nishihara, Tatsuo Yoshida, Shiro Adachi, Mitsushi Hyogo