Patents by Inventor Masashi Kiguchi

Masashi Kiguchi 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: 11896205
    Abstract: A digestive organ internal contents sampling capsule for sampling internal contents in a digestive organ includes: a cylindrical container insoluble in a digestive tract for housing the internal contents in the digestive organ; an outer lid enclosing an orifice of the cylindrical container and to dissolve at least partially in the digestive organ; an inner lid arranged in the cylindrical container, and to swell in response to contact with the internal contents in the digestive organ to enclose the orifice of the cylindrical container after the orifice is exposed by dissolving of at least a part of the outer lid; and a marker material to be discharged together with the cylindrical container housing the internal contents in the digestive organ and feces.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 13, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Ayako Nishimura, Akihiko Kandori, Tsukasa Funane, Akiko Obata, Hirokazu Atsumori, Masashi Kiguchi
  • Patent number: 11701011
    Abstract: Provided is a biological information detection device including: an image acquisition unit that acquires an image composed of image signals including a plurality of wavelength components obtained by capturing reflected light from an object; a region division unit that divides the image into a plurality of regions for each frame; a local pulse wave detection unit that detects a pulse wave based on wavelength fluctuation between frames for each of the regions; and a blood pressure estimation unit that calculates propagation velocity of the pulse wave based on an appearance time difference of patterns of the pulse waves in two or more regions extracted based on an appearance order of the patterns of the pulse waves in the plurality of regions, and estimates a blood pressure based on the propagation velocity of the pulse wave.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: July 18, 2023
    Assignee: HITACHI, LTD.
    Inventors: Nobuhiro Fukuda, Yuichi Nonaka, Yuto Komatsu, Charles Limasanches, Takashi Numata, Hironori Wakana, Masashi Kiguchi
  • Patent number: 11593518
    Abstract: Provided is a medical image processing apparatus including: an image acquisition unit that obtains a medical image of a subject; and an image processing unit that generates a second medical image by applying predetermined image processing on the medical image. The image processing unit includes: a surface area extraction unit that extracts a surface area including information that can lead to individuality determination or identification of the subject, from the medical image; a body orientation determination unit that determines body orientation on the basis of the surface area; a surface area deformation unit that deforms the surface area of the medical image; and an object assignment unit that assigns an object indicating the body orientation to the medical image in which the surface area has been deformed and that generates the second medical image.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 28, 2023
    Assignee: HITACHI, LTD.
    Inventors: Tsukasa Funane, Masashi Kiguchi
  • Patent number: 11547309
    Abstract: A biological information detection device includes: a video capture unit, a blood flow analysis unit, a local pulse wave detection unit, a pulse wave propagation velocity calculation unit, and a blood pressure estimation unit. The video capture unit obtains video information on a face of a living body. The blood flow analysis unit analyzes video data of at least three skin areas in the video information, as blood flow information. The local pulse wave detection unit is provided for each skin area to calculate pulse information based on the blood flow information sequenced chronologically. The pulse wave propagation velocity calculation unit calculates a pulse wave propagation velocity based on a phase difference between pieces of the pulse information at each skin area calculated by the local pulse wave detection unit. The blood pressure estimation unit estimates blood pressure based on the pulse wave propagation velocity.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: January 10, 2023
    Inventors: Nobuhiro Fukuda, Masashi Kiguchi, Takashi Numata, Hironori Wakana
  • Patent number: 11331048
    Abstract: Provided is a technique for comprehensively understanding the relationship between brain regions. A brain connectivity analysis system herein includes a memory configured to have stored therein a connectivity analysis program for analyzing the connectivity; and a processor configured to read the connectivity analysis program from the memory and analyze the connectivity. The processor is configured to execute a process of acquiring from a storage unit measured data on a plurality of selected regions of a brain, a process of determining at least two of the plurality of regions as seed regions and calculating a plurality of connectivity features for the seed regions and other regions from the measured data on the plurality of regions, and a process of generating a connectivity feature graph showing a relationship between a transfer delay time and another connectivity feature of each region that are included in the plurality of connectivity features.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: May 17, 2022
    Assignee: HITACHI, LTD.
    Inventors: Stephanie Sutoko, Masashi Kiguchi, Atsushi Maki, Tsukasa Funane, Hiroki Sato
  • Publication number: 20220087655
    Abstract: A digestive organ internal contents sampling capsule for sampling internal contents in a digestive organ includes: a cylindrical container insoluble in a digestive tract for housing the internal contents in the digestive organ; an outer lid enclosing an orifice of the cylindrical container and to dissolve at least partially in the digestive organ; an inner lid arranged in the cylindrical container, and to swell in response to contact with the internal contents in the digestive organ to enclose the orifice of the cylindrical container after the orifice is exposed by dissolving of at least a part of the outer lid; and a marker material to be discharged together with the cylindrical container housing the internal contents in the digestive organ and feces.
    Type: Application
    Filed: March 17, 2021
    Publication date: March 24, 2022
    Inventors: Ayako NISHIMURA, Akihiko KANDORI, Tsukasa FUNANE, Akiko OBATA, Hirokazu ATSUMORI, Masashi KIGUCHI
  • Patent number: 11071483
    Abstract: A mood score calculation apparatus has a memory device that stores a manipulation history of a user on a predetermined device and a arithmetic device that classifies the manipulation history into any one of a verbal task and a spatial task on the basis of a predetermined algorithm, calculates the user's mood score on the basis of a relative relationship between the manipulation histories for each of the verbal task and the spatial task specified in the classification, and outputs information on the mood score into a predetermined output target.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: July 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Masashi Egi, Masashi Kiguchi, Hirokazu Atsumori
  • Patent number: 11033230
    Abstract: There is disclosed a probe holder module that configures a part of a probe holder for an optical measurement which holds a light emission probe and a light detection probe and can be mounted on an object to be measured and configures the probe holder for optical measurement by combining a plurality of probe holder modules, the probe holder module including a holding part for mechanically holding at least one of the light emission probe and the light detection probe, at least one of an electric circuit and electric wiring to be electrically connected to at least one of the light emission probe and the light detection probe, a terminal for connecting at least one of the light emission probe and the light detection probe and at least one of the electric circuit and the electric wiring, a mechanical connection part to be mechanically connecting other probe holder module, and an electrical connection part to be electrically connected to the other probe holder module.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: June 15, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Funane, Masashi Kiguchi, Hiroki Sato
  • Publication number: 20210085196
    Abstract: Provided is a biological information detection device including: an image acquisition unit that acquires an image composed of image signals including a plurality of wavelength components obtained by capturing reflected light from an object; a region division unit that divides the image into a plurality of regions for each frame; a local pulse wave detection unit that detects a pulse wave based on wavelength fluctuation between frames for each of the regions; and a blood pressure estimation unit that calculates propagation velocity of the pulse wave based on an appearance time difference of patterns of the pulse waves in two or more regions extracted based on an appearance order of the patterns of the pulse waves in the plurality of regions, and estimates a blood pressure based on the propagation velocity of the pulse wave.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 25, 2021
    Applicant: HITACHI, LTD.
    Inventors: Nobuhiro FUKUDA, Yuichi NONAKA, Yuto KOMATSU, Charles LIMASANCHES, Takashi NUMATA, Hironori WAKANA, Masashi KIGUCHI
  • Patent number: 10881338
    Abstract: A biological information detection apparatus for measuring a SpO2 without contact from a distant position includes a camera that acquires an image with visible and infrared light, a first wavelength fluctuation detection section detects a temporal variation of a wavelength of an image with the visible light to generate a first wavelength difference data signal, a first amplitude detection section detects an amplitude of the first wavelength difference data signal, a second wavelength fluctuation detection section detects a temporal variation of a wavelength of an image with the infrared light to generate a second wavelength difference data signal, a second amplitude detection section detects an amplitude of the second wavelength difference data signal, a ratio calculation section calculates a ratio between the amplitudes of the first and second wavelength difference data signals, and an oxygen saturation concentration calculation section calculates an oxygen saturation concentration based on the calculated am
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: January 5, 2021
    Assignee: HITACHI, LTD.
    Inventors: Nobuhiro Fukuda, Masashi Kiguchi
  • Publication number: 20200337573
    Abstract: A biological information detection device includes: a video capture unit, a blood flow analysis unit, a local pulse wave detection unit, a pulse wave propagation velocity calculation unit, and a blood pressure estimation unit. The video capture unit obtains video information on a face of a living body. The blood flow analysis unit analyzes video data of at least three skin areas in the video information, as blood flow information. The local pulse wave detection unit is provided for each skin area to calculate pulse information based on the blood flow information sequenced chronologically. The pulse wave propagation velocity calculation unit calculates a pulse wave propagation velocity based on a phase difference between pieces of the pulse information at each skin area calculated by the local pulse wave detection unit. The blood pressure estimation unit estimates blood pressure based on the pulse wave propagation velocity.
    Type: Application
    Filed: March 13, 2020
    Publication date: October 29, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Nobuhiro FUKUDA, Masashi Kiguchi, Takashi Numata, Hironori Wakana
  • Patent number: 10755187
    Abstract: A mood score calculation system includes a processor and a memory. The memory is configured to hold relationship information on a relationship between a mood score of a user and a statistical feature for indicating fluctuation of operational interval time of a user terminal. The processor is configured to acquire an operation log of a first user terminal. The processor is configured to calculate, from the operation log, a value of a statistical feature for indicating fluctuation of operational interval time of the first user terminal. The processor is configured to determine a mood score of a user of the first user terminal based on the value of the statistical feature and the relationship information and output the mood score.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: August 25, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Egi, Masashi Kiguchi, Hirokazu Atsumori
  • Patent number: 10638975
    Abstract: A biological light measurement device has one or more light emission means arranged on a surface of a subject, one or more light detection means arranged on the surface of the subject, a holding unit for holding the light emission means and the light detection means, a mounting jig for mounting the holding unit on the subject, and means for changing an SD distance defined by a distance between the light emission means and the light detection means. The holding unit holds the light emission means and the light detection means so that two or more types of the SD distance are configured.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: May 5, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Funane, Masashi Kiguchi, Hiroki Sato
  • Patent number: 10548518
    Abstract: In a biophotonic measurement device based on the principles of near-infrared spectroscopy (NIRS), in order to realize appropriate conditions in any light-source/detector arrangement and various required specifications, a photoirradiation module 13 including a light source 101, a photodetection module 14 including a photodetector 102, and a central control/analysis unit 18 are provided. The central control/analysis unit 18 acquires correspondence relations between each of photodetection units and photoirradiation units by using a correspondence acquiring unit 19. The photoirradiation module 13 and the photodetection module 14 switch signal detection methods at each measurement point by utilizing an evaluation function value determined by detection output of the photodetector 102 so that the plurality of signal detection methods are mixable, and the high-precision and optimum biophotonic measurement device is realized.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: February 4, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Tsukasa Funane, Takusige Katura, Hirokazu Atsumori, Masashi Kiguchi
  • Publication number: 20200034564
    Abstract: Provided is a medical image processing apparatus including: an image acquisition unit that obtains a medical image of a subject; and an image processing unit that generates a second medical image by applying predetermined image processing on the medical image. The image processing unit includes: a surface area extraction unit that extracts a surface area including information that can lead to individuality determination or identification of the subject, from the medical image; a body orientation determination unit that determines body orientation on the basis of the surface area; a surface area deformation unit that deforms the surface area of the medical image; and an object assignment unit that assigns an object indicating the body orientation to the medical image in which the surface area has been deformed and that generates the second medical image.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 30, 2020
    Inventors: Tsukasa FUNANE, Masashi KIGUCHI
  • Publication number: 20190350505
    Abstract: A biological information detection apparatus for measuring a SpO2 without contact from a distant position includes a camera that acquires an image with visible and infrared light, a first wavelength fluctuation detection section detects a temporal variation of a wavelength of an image with the visible light to generate a first wavelength difference data signal, a first amplitude detection section detects an amplitude of the first wavelength difference data signal, a second wavelength fluctuation detection section detects a temporal variation of a wavelength of an image with the infrared light to generate a second wavelength difference data signal, a second amplitude detection section detects an amplitude of the second wavelength difference data signal, a ratio calculation section calculates a ratio between the amplitudes of the first and second wavelength difference data signals, and an oxygen saturation concentration calculation section calculates an oxygen saturation concentration based on the calculated am
    Type: Application
    Filed: May 16, 2019
    Publication date: November 21, 2019
    Applicant: HITACHI, LTD.
    Inventors: Nobuhiro FUKUDA, Masashi KIGUCHI
  • Publication number: 20190125197
    Abstract: A biological information detection apparatus includes: a camera; a frame image analysis unit that detects a region including pixels having a predetermined skin color, as a skin color region, from a frame image taken using the camera, and detects a signal corresponding to a light wavelength from an image signal of each pixel included in the skin color region, as skin color wavelength data; a skin color wavelength difference detection unit that calculates an average value of differences of the skin color wavelength data from predetermined reference wavelength data for the pixels included in the skin color region, and acquires the average value as average wavelength difference data; a pulse wave signal detection unit that detects a signal obtained by smoothing the average wavelength difference data detected in time series, as a pulse wave signal.
    Type: Application
    Filed: March 30, 2018
    Publication date: May 2, 2019
    Inventors: Nobuhiro FUKUDA, Masashi KIGUCHI, Akiko NAKAJIMA, Takashi NUMATA, Hironori WAKANA, Masuyoshi YAMADA
  • Publication number: 20190110727
    Abstract: A mood score calculation apparatus has a memory device that stores a manipulation history of a user on a predetermined device and a arithmetic device that classifies the manipulation history into any one of a verbal task and a spatial task on the basis of a predetermined algorithm, calculates the user's mood score on the basis of a relative relationship between the manipulation histories for each of the verbal task and the spatial task specified in the classification, and outputs information on the mood score into a predetermined output target.
    Type: Application
    Filed: March 23, 2018
    Publication date: April 18, 2019
    Applicant: HITACHI, LTD.
    Inventors: Masashi EGI, Masashi KIGUCHI, Hirokazu ATSUMORI
  • Publication number: 20190046094
    Abstract: This living-body light measuring device is characterized in including: light source units each of which irradiate a subject with light modulated using a prescribed modulation frequency; light detecting units each of which detect an optical signal based on the light; a signal acquiring unit which multiplies the optical by a signal having the prescribed modulation frequency corresponding to the respective light source unit, and which acquires the resulting signal as a signal radiated from the respective light source unit; an analog-digital converter which subjects each signal to analog-digital conversion using a prescribed sampling frequency; and a computing unit which integrates the signals, wherein the sampling frequency is an even multiple of all the modulation frequencies, and the time over which the computing unit performs the integration is an integral multiple of all the modulated signal periods, being the reciprocal of all the modulation frequencies.
    Type: Application
    Filed: February 10, 2017
    Publication date: February 14, 2019
    Inventors: Tsukasa FUNANE, Masashi KIGUCHI, Kiyoshi HASEGAWA
  • Publication number: 20180220968
    Abstract: A biological light measurement device has one or more light emission means arranged on a surface of a subject, one or more light detection means arranged on the surface of the subject, a holding unit for holding the light emission means and the light detection means, a mounting jig for mounting the holding unit on the subject, and means for changing an SD distance defined by a distance between the light emission means and the light detection means. The holding unit holds the light emission means and the light detection means so that two or more types of the SD distance are configured.
    Type: Application
    Filed: January 7, 2015
    Publication date: August 9, 2018
    Inventors: Tsukasa FUNANE, Masashi KIGUCHI, Hiroki SATO