Patents by Inventor Katsuhiko Shimizu

Katsuhiko Shimizu 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: 20240016474
    Abstract: An image processing device is an image processing device that displays an image representing a biological tissue on a display and displays an element representing a position of a sensor on a screen same as the image on the display, based on tomographic data acquired by the sensor moving in a lumen of the biological tissue, the image processing device including a control unit that, when a user operation of specifying a movement destination of the sensor is performed on the screen, controls movement of the sensor according to the user operation, and changes a relative position of the element to cause a position of the sensor after movement to be represented.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 18, 2024
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Shunsuke YOSHIZAWA
  • Publication number: 20240013387
    Abstract: An image processing device is an image processing device that, with reference to tomographic data that is a data set obtained using a sensor moving in a lumen of a biological tissue, displays a cross-sectional image representing a cross section of the biological tissue orthogonal to a movement direction of the sensor on a display, the image processing device including a control unit that acquires specification data specifying at least one location in a space corresponding to the tomographic data, and performs control so that a mark, which varies depending on a distance between the at least one location and the cross section in the movement direction is displayed at a position corresponding to the at least one location in the cross-sectional image when the cross-sectional image is displayed.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 11, 2024
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Yasukazu SAKAMOTO, Shunsuke YOSHIZAWA, Kazuhiro SATOMI, Yoshinao YAZAKI
  • Publication number: 20240013514
    Abstract: An information processing device that includes a classification image data acquisition unit configured to acquire a plurality of classification image data classified into a plurality of regions including a first intraluminal region into which the image acquisition catheter for a three-dimensional scan is inserted and a second intraluminal region into which the image acquisition catheter is not inserted; a merging determination unit configured to determine whether the second intraluminal region in a first catheter image merges with the first intraluminal region in a second catheter image acquired at a different axial position; and an image output unit configured to output a region image including the first intraluminal region based on the plurality of classification image data, and outputs, only the second intraluminal region that is determined to merge by the merging determination unit, together with the first intraluminal region as the region image.
    Type: Application
    Filed: September 26, 2023
    Publication date: January 11, 2024
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Shunsuke YOSHIZAWA
  • Publication number: 20240013390
    Abstract: An image processing device, with reference to tomographic data obtained using a sensor moving in a lumen of a biological tissue, displays an image representing the biological tissue on a display, and includes a control unit that acquires specification data specifying at least one location in a space corresponding to the tomographic data, identifies a direction of the at least one location from a centroid in a cross section of the biological tissue orthogonal to a movement direction of the sensor, the direction including the at least one location, as a specification direction, with reference to the tomographic data, identifies a position corresponding to the at least one location in the cross section as a corresponding position according to an identified specification direction and a position of the centroid, and performs control so that a mark is displayed at an identified corresponding position when the image is displayed.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 11, 2024
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Yasukazu SAKAMOTO, Shunsuke YOSHIZAWA, Kazuhiro SATOMI, Yoshinao YAZAKI
  • Publication number: 20230270418
    Abstract: An ultrasound catheter capable of reducing noise in an ultrasound image by limiting reflection of ultrasound oscillated from a distal end side surface of a transducer. The ultrasound catheter includes: an elongated sheath; an ultrasound transducer; a shaft that supports the ultrasound transducer; and a cap that seals an opening portion of the sheath and has an X-ray opaque property. The cap includes an extension portion including a proximal portion facing the ultrasound transducer and an outer circumferential surface facing an inner circumferential surface of the sheath. The proximal portion includes an ultrasound scattering surface that scatters ultrasound from the ultrasound transducer. The outer circumferential surface includes a contact portion that is in contact with the inner circumferential surface of the sheath in a liquid-tight manner. The ultrasound scattering surface intersects with a virtual plane obtained by enlarging the ultrasound oscillation surface in an in-plane direction.
    Type: Application
    Filed: February 27, 2023
    Publication date: August 31, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Hiroyuki ISHIHARA, Katsuhiko SHIMIZU, Yasukazu SAKAMOTO, Shunsuke YOSHIZAWA, Yuki JINGU
  • Publication number: 20230260120
    Abstract: An information processing device that assists understanding of an image acquired by an image acquisition catheter. The information processing device includes: an image acquisition unit that acquires a catheter image including an inner cavity obtained by an image acquisition catheter; a position information acquisition unit that acquires position information regarding a position of a medical instrument inserted into the inner cavity included in the catheter image; and a first data output unit that inputs the acquired catheter image and the acquired position information to a first trained model that, upon receiving input of the catheter image and the position information, outputs first data in which each region of the catheter image is classified into at least three of a biological tissue region, a medical instrument region where the medical instrument exists, and a non-biological tissue region, and outputs the first data.
    Type: Application
    Filed: March 27, 2023
    Publication date: August 17, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Shunsuke YOSHIZAWA, Thomas HENN, Clément JACQUET, Stephen TCHEN, Ryosuke SAGA
  • Publication number: 20230255569
    Abstract: An image processing device is an image processing device that causes a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue. The image processing device includes: a control unit configured to form, in the three-dimensional data, a cutting region for exposing a lumen of the biological tissue in the three-dimensional image, and to display, on the display, a two-dimensional image representing a portion corresponding to the cutting region in one cross section of the biological tissue at a position corresponding to the one cross section in the three-dimensional image.
    Type: Application
    Filed: April 21, 2023
    Publication date: August 17, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Stephen TCHEN, Thomas HENN, Ryosuke SAGA
  • Publication number: 20230252749
    Abstract: An image processing device for causing a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue includes: a control unit configured to form, in the three-dimensional data, a cutting region exposing a lumen of the biological tissue in the three-dimensional image, and cause the display to display, together with the three-dimensional image, a two-dimensional image representing a cross section of the biological tissue and a region corresponding to the cutting region in the cross section.
    Type: Application
    Filed: March 27, 2023
    Publication date: August 10, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Stephen TCHEN, Thomas HENN, Ryosuke SAGA
  • Publication number: 20230245306
    Abstract: An image processing device for generating and updating three-dimensional data representing a biological tissue based on tomographic data of the biological tissue acquired by a sensor that acquires the tomographic data while moving through a lumen of the biological tissue, and causing a display to display the three-dimensional data as a three-dimensional image includes: a control unit configured to color, in the three-dimensional image, at least a voxel representing an inner surface of the biological tissue or a voxel that is adjacent to the voxel representing the inner surface and that represents the lumen among a first voxel group corresponding to a cross section indicated by tomographic data newly acquired by the sensor, in a manner of being distinguished from a second voxel group corresponding to another cross section of the biological tissue.
    Type: Application
    Filed: March 27, 2023
    Publication date: August 3, 2023
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Stephen TCHEN, Thomas HENN, Ryosuke SAGA
  • Publication number: 20230230355
    Abstract: An information processing device that includes: an image acquisition unit that acquires a catheter image obtained by an image acquisition catheter inserted into a first cavity; and a first classification data output unit configured to input the acquired catheter image to a first classification trained model that, upon receiving input of the catheter image, outputs first classification data in which a non-biological tissue region including a first inner cavity region that is inside the first cavity and a second inner cavity region that is inside a second cavity where the image acquisition catheter is not inserted and a biological tissue region are classified as different regions, and outputs the first classification data, in which the first classification trained model is generated using first training data that indicates at least the non-biological tissue region including the first inner cavity region and the second inner cavity region and the biological tissue region.
    Type: Application
    Filed: March 23, 2023
    Publication date: July 20, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Shunsuke YOSHIZAWA, Thomas HENN, Clément JACQUET, Stephen TCHEN, Ryosuke SAGA
  • Publication number: 20230190231
    Abstract: An ultrasound catheter and an ultrasound catheter system that allow an operator to identify a direction of an image acquired by a transducer. The ultrasound catheter includes: an outer sheath including an accommodation lumen extending from a proximal end to a distal end ; a drive shaft movable in an inner sheath along an axial center of the outer sheath; a transducer disposed in the accommodation lumen and fixed to a distal end of the drive shaft; and a radiopaque distal end marker disposed at a distal end portion of the outer sheath, in which the distal end marker includes a marker identification portion extending along the axial center on a part in a circumferential direction, and a marker comparison portion formed in a circumferential direction or a radial direction of the outer sheath with a length and/or an arrangement different from that of the marker identification portion.
    Type: Application
    Filed: February 23, 2023
    Publication date: June 22, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Yasukazu SAKAMOTO, Kazuhiro SATOMI, Yoshinao YAZAKI
  • Publication number: 20230133103
    Abstract: A learning model generation method includes: acquiring training data from a training database that records a plurality of sets of a tomographic image acquired using a tomographic image acquisition probe, and correct answer classification data in which each of pixels included in the tomographic image is classified into a plurality of regions including a living tissue region and a non-living tissue region, in association with each other; acquiring thin-walled part data relating to a thin-walled part thinner than a predetermined threshold value, for a predetermined region in the correct answer classification data; and performing a parameter adjustment process for a learning model that outputs output classification data in which each of the pixels included in the tomographic image is classified into the plurality of regions, based on the training data and the thin-walled part data.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Shunsuke YOSHIZAWA, Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA
  • Publication number: 20230025720
    Abstract: An image processing device is an image processing device configured to cause a display to display three-dimensional data as a three-dimensional image, the three-dimensional data representing a biological tissue. The image processing device includes: a control unit configured to detect a series of positions of a catheter inserted into the biological tissue from data obtained in time series by a sensor observing the surrounding of a lumen of the biological tissue while moving in the lumen, and to switch a display mode between a first mode for displaying a first figure representing the series of positions in the three-dimensional image, and a second mode for displaying a second figure representing one position among the series of positions in the three-dimensional image.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 26, 2023
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Thomas HENN, Stephen TCHEN, Ryosuke SAGA
  • Publication number: 20230027335
    Abstract: An image processing device is an image processing device configured to cause a display to display three-dimensional data as a three-dimensional image, the three-dimensional data representing a biological tissue. The image processing device includes: a control unit configured to adjust a color tone of each pixel of the three-dimensional image according to a dimension of the biological tissue in a linear direction from a viewpoint when the three-dimensional image is displayed on the display.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 26, 2023
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Stephen TCHEN, Thomas HENN, Ryosuke SAGA
  • Publication number: 20230021992
    Abstract: An image processing device is an image processing device configured to cause a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue having a longitudinal lumen. The image processing device includes: a control unit configured to calculate centroid positions of a plurality of cross sections in a lateral direction of the lumen of the biological tissue by using the three-dimensional data, set a pair of planes intersecting at a single line passing through the calculated centroid positions as cutting planes, and form, in the three-dimensional data, an opening exposing the lumen of the biological tissue from a region interposed between the cutting planes in the three-dimensional image.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 26, 2023
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Thomas HENN, Clément JACQUET, Stephen TCHEN, Ryosuke SAGA
  • Publication number: 20230000464
    Abstract: An ultrasound catheter and an ultrasound catheter system that can acquire an image of an observation target with high accuracy when inserted into a large inner lumen. An ultrasound catheter includes: an outer sheath having an accommodation lumen; an inner sheath that can move along an axis; a drive shaft that can rotate in the inner sheath and the outer sheath; and a transducer that is disposed in the accommodation lumen and fixed to a distal end of the drive shaft. The outer sheath includes a first bent portion bent and shaped in advance at a predetermined angle on a proximal side of a most distal end of the accommodation lumen, and a first tubular portion and a second tubular portion positioned on a distal side of the first bent portion and on the proximal side of the most distal end of the accommodation lumen.
    Type: Application
    Filed: September 13, 2022
    Publication date: January 5, 2023
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Yasukazu SAKAMOTO
  • Publication number: 20220218311
    Abstract: A diagnostic assistance device is a diagnostic assistance device configured to generate three-dimensional data of a biological tissue based on tomographic data of the biological tissue, and display the generated three-dimensional data as a three-dimensional image on a display. The diagnostic assistance device includes a control unit configured to adjust a color tone of each voxel of the three-dimensional image according to a distance from a reference point, a reference line, or a reference plane in a three-dimensional space to each point of the three-dimensional data.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Thomas HENN, Nuwan HERATH, Iselin ERIKSSEN, Ryosuke SAGA
  • Publication number: 20220218309
    Abstract: A diagnostic assistance device is a diagnostic assistance device configured to generate three-dimensional data of a biological tissue inserted with a catheter based on tomographic data of the biological tissue, and display the generated three-dimensional data as a three-dimensional image on a display. The diagnostic assistance device includes: a control unit configured to specify a point of the biological tissue with which a distal end of the catheter is in contact as a contact point in the three-dimensional data, and set a color of a voxel corresponding to the contact point to a predetermined color in the three-dimensional image.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Thomas HENN, Nuwan HERATH, Iselin ERIKSSEN, Ryosuke SAGA
  • Publication number: 20220218304
    Abstract: A diagnostic assistance device is a diagnostic assistance device configured to generate three-dimensional data of a biological tissue based on tomographic data of the biological tissue, and display the generated three-dimensional data as a three-dimensional image on a display. The diagnostic assistance device includes a control unit configured to form, in the three-dimensional data, an opening that exposes an inner wall surface of the biological tissue to an outside of the biological tissue in the three-dimensional image, and adjust a viewpoint when displaying the three-dimensional image on the display according to a position of the formed opening.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Clément JACQUET, Thomas HENN, Nuwan HERATH, Iselin ERIKSSEN, Ryosuke SAGA
  • Publication number: 20220039778
    Abstract: A diagnostic assistance device generates a three-dimensional image of a moving range of an ultrasound transducer from a two-dimensional image generated using the ultrasound transducer. The ultrasound transducer transmits ultrasound while moving inside a biological tissue through which blood passes. The diagnostic assistance device includes: a control unit that determines an upper limit of a third pixel number, the third pixel number being a pixel number in a third direction of the three-dimensional image corresponding to a moving direction of the ultrasound transducer, according to the number of the two-dimensional image generated per unit time, a first pixel number that is a pixel number in a first direction of the three-dimensional image corresponding to a horizontal direction of the two-dimensional image, and a second pixel number that is a pixel number in a second direction of the three-dimensional image corresponding to a vertical direction of the two-dimensional image.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicants: TERUMO KABUSHIKI KAISHA, Rokken Inc.
    Inventors: Yasukazu SAKAMOTO, Katsuhiko SHIMIZU, Hiroyuki ISHIHARA, Itaru OKUBO, Ryosuke SAGA, Thomas HENN, Clement JACQUET, Nuwan HERATH, Iselin ERIKSSEN