Patents by Inventor Masaaki ISHITSUKA

Masaaki ISHITSUKA 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: 10959705
    Abstract: An ultrasonic probe according to an embodiment includes a group of transducer elements and a plurality of electronic circuits. The group of transducer elements constitutes a main array that is divided into a plurality of sub-arrays, and is two-dimensionally arranged. The electronic circuits are arranged corresponding to the arrangement of the transducer elements constituting the sub-array. At least one of the electronic circuits is a first electronic circuit having a first function. At least one of the electronic circuits is a second electronic circuit having a second function different from the first function.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: March 30, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Masaaki Ishitsuka, Hiroyuki Shikata
  • Publication number: 20210018605
    Abstract: An apparatus according to the embodiment includes a first delay circuit, a second delay circuit, and processing circuitry. The first delay circuit delays an ultrasound signal in a first channel using a plurality of capacitors. The second delay circuit delays an ultrasound signal in a second channel using a plurality of capacitors. The processing circuitry make a first write start position in which writing the ultrasound signal in the capacitor in the first delay circuit is started and a second write start position in which writing the ultrasound signal in the capacitor in the second delay circuit is started different from each other.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 21, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Masaaki ISHITSUKA
  • Patent number: 10624606
    Abstract: An ultrasound diagnostic apparatus according to a present embodiment includes driving pulse generating circuitries and a transmission control circuitry. The transmission control circuitry turns on a switching element of respective driving pulse generating circuitries of the driving pulse generating circuitries to be grounded, and thereby controls so as to make an output impedance of the respective driving pulse generating circuitries become a low impedance. The transmission control circuitry turns off the switching element of the respective driving pulse generating circuitries, and thereby controls so as to make the output impedance become a high impedance by means of a resistance value of the resistance.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 21, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Wataru Kameishi, Hiroyuki Shibanuma, Satoshi Kamiyama, Masaaki Ishitsuka, Tomohiro Fujita, Teruki Hagihara, Shuta Fujiwara
  • Patent number: 10226229
    Abstract: To provide an ultrasound diagnosis apparatus capable of appropriately assigning a transmission delay time of a group to a transducer without complicated wires. The ultrasound diagnosis apparatus of the embodiment comprises a plurality of transducers, a timing pulse generator, a switch part, and a switch controller. Ultrasound waves are transmitted to the transducers. The timing pulse generator has output terminals for outputting timing pulses based on a delay time to a channel corresponding to each of the transducers, in which a plurality of output terminals are divided into groups and each group has the output terminals of a specific number greater than two. The timing pulse generator then generates the transmission delay time within a predetermined time range for the each group. The switch part selectively connects the channels with the output terminals.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hironobu Hongou, Yasuo Miyajima, Nobuyuki Iwama, Isao Uchiumi, Masaaki Ishitsuka, Toru Hirano
  • Publication number: 20190069880
    Abstract: An ultrasound probe includes: a plurality of transducer elements each configured to perform at least one selected from between transmission of an ultrasound wave and reception of an ultrasound wave; first circuitry that is arranged on a rear face side of the transducer elements, is provided with electronic circuitry corresponding to two or more of the transducer elements organized in a first group, and is provided with a through silicon via corresponding to two or more of the transducer elements organized in a second group; and second circuitry that is arranged on a rear face side of the first circuitry, is provided with a through silicon via corresponding to the two or more of the transducer elements organized in the first group, and is provided with electronic circuitry corresponding to the two or more of the transducer elements organized in the second group.
    Type: Application
    Filed: August 31, 2018
    Publication date: March 7, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Toshiyuki NAGASE, Masaaki ISHITSUKA, Toru HIRANO
  • Publication number: 20190008477
    Abstract: An ultrasound probe according to an embodiment includes. transducer elements, phase reversal processing circuitry, and delay processing circuitry. The transducer elements, each of which is configured to generate a first echo signal by receiving a reflected wave of a first ultrasound wave and to generate a second echo signal by receiving a reflected wave of a second ultrasound wave corresponding to an ultrasound wave obtained by reversing the phase of the first ultrasound wave. The phase reversal processing circuitry is configured to reverse the phase of the second echo signal. The delay processing circuitry is configured to delay the first echo signal and the phase-reversed second echo signal.
    Type: Application
    Filed: July 5, 2018
    Publication date: January 10, 2019
    Applicant: Canon Medical Systems Corporation
    Inventor: Masaaki ISHITSUKA
  • Patent number: 10130336
    Abstract: An ultrasound probe and ultrasonic diagnosis apparatus that can maintain surface temperature of an ultrasound probe within a safe range, without reduction in performance. The ultrasound probe includes a casing, a transducer, an electronic circuit, and a heat-transfer construction. Elements of the transducer are aligned at one end of the casing and send out ultrasound waves in accordance with their respective delay times. The electronic circuit, disposed in the casing, includes a delay circuit setting delay times and pulsers for generating pulses in accordance with the delay times, the pulses being sent to the transducer. While the electronic circuit is being energized, the heat-transfer construction disposes a member having a low heat conductivity at least either between the electronic circuit and the casing or between the electronic circuit and the transducer. Thereby, heat from the electronic circuit is conducted to the other end of the casing.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: November 20, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yasuo Miyajima, Hironobu Hongou, Toru Hirano, Isao Uchiumi, Nobuyuki Iwama, Masaaki Ishitsuka
  • Patent number: 10123765
    Abstract: The present embodiment relates to an ultrasound probe having a first ultrasound vibrator group and a second ultrasound vibrator group, comprising a plurality of matrix switches and an adder. The ultrasound probe has a mode to send ultrasound to a predetermined observation point within a subject by the first ultrasound vibrator group, and to receive ultrasound echoes reflected within the subject by the second ultrasound vibrator group. The plurality of matrix switches extract, based on the distance between the second ultrasound vibrator group and the observation point, a plurality of ultrasound echoes having substantially the same phase from a plurality of ultrasound echoes output by the second ultrasound vibrator group. The adder adds the plurality of ultrasound echoes extracted by the plurality of matrix switches for each of the matrix switches and outputs them.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: November 13, 2018
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Hironobu Hongou, Toru Hirano, Isao Uchiumi, Masaaki Ishitsuka, Takayuki Shiina
  • Patent number: 10123777
    Abstract: An ultrasound diagnosis apparatus includes a transformer, a first power source, a second power source, and a switching unit. The transformer includes a primary winding and a secondary winding, and drives an ultrasound transducer based on a voltage generated in the secondary winding. The first and second power sources cause a potential difference. The switching unit switches a connection path between the primary winding and at least one of the first and second power sources to a first connection path that connects the first power source to one end of the primary winding and the second power source to the other end, a second connection path that connects the first power source to the other end and the second power source to the one end, or a ground connection path that connects the first power source or the second power source to the ground through the primary winding.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: November 13, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Wataru Kameishi, Hiroyuki Shibanuma, Shuta Fujiwara, Satoshi Kamiyama, Takayuki Shiina, Masaaki Ishitsuka, Tomohiro Fujita, Teruki Hagihara
  • Publication number: 20160287213
    Abstract: An ultrasonic probe according to an embodiment includes a group of transducer elements and a plurality of electronic circuits. The group of transducer elements constitutes a main array that is divided into a plurality of sub-arrays, and is two-dimensionally arranged. The electronic circuits are arranged corresponding to the arrangement of the transducer elements constituting the sub-array. At least one of the electronic circuits is a first electronic circuit having a first function. At least one of the electronic circuits is a second electronic circuit having a second function different from the first function.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Masaaki ISHITSUKA, Hiroyuki Shikata
  • Publication number: 20160183917
    Abstract: An ultrasound diagnostic apparatus according to a present embodiment includes driving pulse generating circuitries and a transmission control circuitry. The transmission control circuitry turns on a switching element of respective driving pulse generating circuitries of the driving pulse generating circuitries to be grounded, and thereby controls so as to make an output impedance of the respective driving pulse generating circuitries become a low impedance. The transmission control circuitry turns off the switching element of the respective driving pulse generating circuitries, and thereby controls so as to make the output impedance become a high impedance by means of a resistance value of the resistance.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 30, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Wataru Kameishi, Hiroyuki Shibanuma, Satoshi Kamiyama, Masaaki Ishitsuka, Tomohiro Fujita, Teruki Hagihara, Shuta Fujiwara
  • Patent number: 9335404
    Abstract: An ultrasound diagnosis apparatus in comprising a transformer, a first power source and a second power source, an ultrasound transducer, a processor, and a driving part. The transformer comprises a primary winding and a secondary winding. The first power source and the second power source are connected to the primary winding. The ultrasound transducer is driven by the voltage induced to the secondary winding, and transmits ultrasound waves to a subject, and receives reflected waves reflected by the subject to output the received signal. The processor implements processing on the received signal to generate ultrasound wave images. The driving part drives to change the voltage among a first level voltage based on the first power source, a second level voltage based on the second power source, and a third level voltage between the first level voltage and the second level voltage.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 10, 2016
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Wataru Kameishi, Hiroyuki Shibanuma, Shuta Fujiwara, Satoshi Kamiyama, Takayuki Shiina, Masaaki Ishitsuka, Tomohiro Fujita
  • Publication number: 20160120512
    Abstract: According to one embodiment, an ultrasonic diagnostic apparatus includes at least a memory circuitry, a processing circuitry, a data interpolation circuitry, and an image generating circuitry. The memory circuitry stores a plurality of pieces of reception data in an order of reception, the plurality of pieces of reception data being received continuously in a time series by a plurality of transducers, and is specified reading positions in an order different from the order of reception. The processing circuitry calculates a delay time, and calculates, based on the delay time, reading positions for acquiring reception data being used for calculating interpolation data from the memory circuitry. The data interpolation circuitry calculates interpolating data based on the plurality of pieces of reception data acquired from the calculated reading positions of the memory circuitry. The image generating circuitry generates an ultrasonic image based on a reception beam formed by using the interpolation data.
    Type: Application
    Filed: October 22, 2015
    Publication date: May 5, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEM CORPORATION
    Inventors: Teruki HAGIHARA, Wataru KAMEISHI, Hiroyuki SHIBANUMA, Masaaki ISHITSUKA, Shuta FUJIWARA, Satoshi KAMIYAMA, Tomohiro FUJITA
  • Publication number: 20160106393
    Abstract: An ultrasound diagnosis apparatus includes a transformer, a first power source, a second power source, and a switching unit. The transformer includes a primary winding and a secondary winding, and drives an ultrasound transducer based on a voltage generated in the secondary winding. The first and second power sources cause a potential difference. The switching unit switches a connection path between the primary winding and at least one of the first and second power sources to a first connection path that connects the first power source to one end of the primary winding and the second power source to the other end, a second connection path that connects the first power source to the other end and the second power source to the one end, or a ground connection path that connects the first power source or the second power source to the ground through the primary winding.
    Type: Application
    Filed: December 21, 2015
    Publication date: April 21, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Wataru KAMEISHI, Hiroyuki SHIBANUMA, Shuta FUJIWARA, Satoshi KAMIYAMA, Takayuki SHllNA, Masaaki ISHITSUKA, Tomohiro FUJITA, Teruki HAGIHARA
  • Publication number: 20140307521
    Abstract: An ultrasound diagnosis apparatus in comprising a transformer, a first power source and a second power source, an ultrasound transducer, a processor, and a driving part. The transformer comprises a primary winding and a secondary winding. The first power source and the second power source are connected to the primary winding. The ultrasound transducer is driven by the voltage induced to the secondary winding, and transmits ultrasound waves to a subject, and receives reflected waves reflected by the subject to output the received signal. The processor implements processing on the received signal to generate ultrasound wave images. The driving part drives to change the voltage among a first level voltage based on the first power source, a second level voltage based on the second power source, and a third level voltage between the first level voltage and the second level voltage.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 16, 2014
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Wataru Kameishi, Hiroyuki Shibanuma, Shuta Fujiwara, Satoshi Kamiyama, Takayuki Shiina, Masaaki Ishitsuka, Tomohiro Fujita
  • Patent number: 8834375
    Abstract: To be able to control an aperture in ultrasound transducer units comprised such that the signals from a plurality of ultrasound transducers are added and output. An ultrasound probe comprising a plurality of ultrasound transducers, a plurality of delay circuits, and an adder circuit, and configured to be able to control a reception aperture of ultrasound waves. The delay circuit performs a delay processing to reception signals. The adder circuit adds and outputs the reception signals for each predetermined group. The ultrasound probe further comprises a gate means. The gate means switches connection and disconnection of the signal path for each signal path arranged between the ultrasound transducer and the adder circuit.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 16, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Hironobu Hongou, Yasuo Miyajima, Toru Hirano, Isao Uchiumi, Nobuyuki Iwama, Masaaki Ishitsuka
  • Publication number: 20140121519
    Abstract: According to one embodiment, an ultrasonic diagnostic apparatus comprises an ultrasonic probe, a transmission unit, a reception unit, a correction unit, an image processing unit and a display unit. The ultrasonic probe includes a plurality of ultrasonic transducer elements. The reception unit stores a plurality of image generation reception signals corresponding to the plurality of ultrasonic transducer elements, generates a reception beam in accordance a predetermined reception condition by using each of the stored image generation reception signals, and stores a plurality of correction reception signals corresponding to the plurality of ultrasonic transducer elements. The correction unit receives the plurality of correction reception signals and corrects at least one of the transmission conditions and the reception condition based on the plurality of correction reception signals.
    Type: Application
    Filed: January 3, 2014
    Publication date: May 1, 2014
    Applicants: Toshiba Medical Systems Corporation, KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuo MIYAJIMA, Nobuyuki Iwama, Isao Uchiumi, Masaaki Ishitsuka, Toru Hirano, Hironobu Hongou
  • Publication number: 20130310695
    Abstract: To provide an ultrasound diagnosis apparatus capable of appropriately assigning a transmission delay time of a group to a transducer without complicated wires. The ultrasound diagnosis apparatus of the embodiment comprises a plurality of transducers, a timing pulse generator, a switch part, and a switch controller. Ultrasound waves are transmitted to the transducers. The timing pulse generator has output terminals for outputting timing pulses based on a delay time to a channel corresponding to each of the transducers, in which a plurality of output terminals are divided into groups and each group has the output terminals of a specific number greater than two. The timing pulse generator then generates the transmission delay time within a predetermined time range for the each group. The switch part selectively connects the channels with the output terminals.
    Type: Application
    Filed: August 10, 2012
    Publication date: November 21, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Hironobu Hongou, Yasuo Miyajima, Nobuyuki Iwama, Isao Uchiumi, Masaaki Ishitsuka, Toru Hirano
  • Publication number: 20130303918
    Abstract: An ultrasound probe and ultrasonic diagnosis apparatus that can maintain surface temperature of an ultrasound probe within a safe range, without reduction in performance. The ultrasound probe includes a casing, a transducer, an electronic circuit, and a heat-transfer construction. Elements of the transducer are aligned at one end of the casing and send out ultrasound waves in accordance with their respective delay times. The electronic circuit, disposed in the casing, includes a delay circuit setting delay times and pulsers for generating pulses in accordance with the delay times, the pulses being sent to the transducer. While the electronic circuit is being energized, the heat-transfer construction disposes a member having a low heat conductivity at least either between the electronic circuit and the casing or between the electronic circuit and the transducer. Thereby, heat from the electronic circuit is conducted to the other end of the casing.
    Type: Application
    Filed: August 21, 2012
    Publication date: November 14, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yasuo Miyajima, Hironobu Hongou, Toru Hirano, Isao Uchiumi, Nobuyuki Iwama, Masaaki Ishitsuka
  • Patent number: 8491476
    Abstract: A bias gate part supplies a bias current to a transmission pulse generator. The transmission pulse generator receives the supply of the bias current, amplifies an input voltage, and supplies an output voltage obtained by the amplification to array transducer elements. In accordance with the timing of transmitting ultrasound waves from the array transducer elements and the level of the output voltage supplied to the array transducer elements, the bias gate part supplies the bias current to the transmission pulse generator while changing the timing of supplying the bias current.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: July 23, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Nobuyuki Iwama, Isao Uchiumi, Masaaki Ishitsuka, Satoshi Kamiyama, Toru Hirano, Takeshi Fukasawa