Patents by Inventor Nobuyuki Iwama

Nobuyuki Iwama 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: 10765401
    Abstract: An ultrasonic diagnostic device according to an embodiment includes an ultrasonic probe and transformer circuitry. The ultrasonic probe transmits ultrasonic waves to a subject and converts reflection waves reflected by the subject to a reflection wave signal. The transformer circuitry includes an auto transformer that transforms the reflection wave signal at a transformation ratio in accordance with a control signal based on information related to the ultrasonic probe among a plurality of transformation ratios.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: September 8, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Isao Uchiumi, Nobuyuki Iwama, Yasuo Miyajima, Hironobu Hongou, Takatoshi Okumura, Koichi Morikawa
  • Patent number: 10575817
    Abstract: According to one embodiment, an ultrasound diagnosis apparatus transmits ultrasound waves to a subject from a plurality of transducers each corresponding to one of a plurality of channels, and receives reflected waves generated in the subject by the transducers. The ultrasound diagnosis apparatus includes a control circuit and a receiving circuit. The control circuit controls channels used to transmit ultrasound waves and channels not used to transmit ultrasound waves among the channels. The receiving circuit receives the reflected waves, and includes a preamplifier and an impedance control circuit. The preamplifier amplifies the reflected waves. The impedance control circuit is located on the upstream side of the preamplifier, and sets line impedance in a transmitting period, in which the ultrasound waves are transmitted from the transducers to the inside of the subject, to be lower than that in a receiving period, in which the reflected waves are received by the transducers.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 3, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hiroyuki Shibanuma, Isao Uchiumi, Nobuyuki Iwama, Wataru Kameishi, Yuhei Fukuo
  • Patent number: 10564273
    Abstract: An ultrasonic diagnostic apparatus according to a present embodiment includes a transmission circuit, a reception circuit, a data processing circuit, an image generating circuit, a switching power supply circuit, and a control circuit. The switching power supply circuit is configured to generate a drive voltage for at least one of the transmission circuit, the reception circuit, the data processing circuit, and the image generating circuit. The control circuit is configured to control the transmission circuit to repeatedly transmit an ultrasonic pulse, and control a timing of a switching operation of the switching power supply circuit to synchronize the timing with a transmission timing or a reception timing of the ultrasonic pulse.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: February 18, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Nobuyuki Iwama, Yuhei Fukuo, Koichi Morikawa, Wataru Kameishi, Isao Uchiumi, Hiroyuki Shibanuma
  • Publication number: 20190321003
    Abstract: According to one embodiment, an ultrasound diagnostic apparatus includes a plurality of probe ports and processing circuitry. An ultrasound probe including transmission circuitry to drive transducers that generate ultrasound is connectible to each of the plurality of probe ports. The processing circuitry generates a control signal for the transmission circuitry or a drive signal to drive the transmission circuitry, according to a position of one of the probe ports to which the ultrasound probe is connected.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Nobuyuki IWAMA, Shuta FUJIWARA, Isao UCHIUMI, Hiroyuki SHIBANUMA, Wataru KAMEISHI, Yuji KUWANA
  • Patent number: 10390801
    Abstract: In general, according to one embodiment, an ultrasonic diagnostic apparatus includes an ultrasonic probe, a plurality of power supplies implemented by circuitry, at least one pulser, and a controller implemented by circuitry. The ultrasonic probe includes a plurality of piezoelectric transducers which generate ultrasonic waves in response to supplied driving signals. The pulser outputs the driving signal based on an applied voltage applied from any one of the plurality of power supplies. The controller switches the plurality of power supplies in accordance with the at least one pulser used for generation of the driving signal in one transmission mode period.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 27, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Nobuyuki Iwama, Hironobu Hongou, Isao Uchiumi, Koichi Morikawa, Takatoshi Okumura
  • Patent number: 10226237
    Abstract: An ultrasonic diagnosis apparatus includes an ultrasonic probe, an image generation unit, a display unit, and a control unit. The image generation unit generates image data from a reflected wave received from the ultrasonic probe. The display unit displays the image data. The ultrasonic probe includes a plurality of temperature sensors that measure the temperature of the ultrasonic probe and a switching circuit that is connected to the respective temperature sensors and switches connection to any one of the temperature sensors to a valid state to output data from the temperature sensors to a temperature detector. The control unit includes an instruction unit that instructs the switching circuit to switch connection to any one of the temperature sensors to a valid state at a predetermined time interval and a determination unit that determines whether a temperature measured by the temperature detector is within a set temperature range.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: March 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yasuo Miyajima, Hironobu Hongou, Isao Uchiumi, Nobuyuki Iwama, Koichi Morikawa, Takatoshi Okumura
  • 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
  • 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
  • Publication number: 20180280001
    Abstract: A medical image diagnosis apparatus includes a power factor corrector, a DC/DC converter, and a battery device. The power factor corrector is supplied with AC power and generates DC power to drive individual parts of the apparatus. The DC/DC converter converts the voltage of the DC power generated by the power factor corrector to a voltage desired for driving the individual parts. The battery device includes a battery that stores DC power, a discharging circuit that is connected to the downstream side of the power factor corrector and supplies the DC power from the battery to the individual parts, and a charging circuit that is connected to the upstream side of the power factor corrector, and is supplied with AC power and supplies DC power to the battery. The battery device supplies the DC power to the individual parts when the power factor corrector cannot supply the DC power.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 4, 2018
    Applicant: Canon Medical Systems Corporation
    Inventors: Nobuyuki Iwama, Shuta Fujiwara, Isao Uchiumi, Hiroyuki Shibanuma, Wataru Kameishi
  • Publication number: 20170252001
    Abstract: According to one embodiment, an ultrasound diagnosis apparatus transmits ultrasound waves to a subject from a plurality of transducers each corresponding to one of a plurality of channels, and receives reflected waves generated in the subject by the transducers. The ultrasound diagnosis apparatus includes a control circuit and a receiving circuit. The control circuit controls channels used to transmit ultrasound waves and channels not used to transmit ultrasound waves among the channels. The receiving circuit receives the reflected waves, and includes a preamplifier and an impedance control circuit. The preamplifier amplifies the reflected waves. The impedance control circuit is located on the upstream side of the preamplifier, and sets line impedance in a transmitting period, in which the ultrasound waves are transmitted from the transducers to the inside of the subject, to be lower than that in a receiving period, in which the reflected waves are received by the transducers.
    Type: Application
    Filed: February 8, 2017
    Publication date: September 7, 2017
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Hiroyuki SHIBANUMA, lsao UCHIUMI, Nobuyuki IWAMA, Wataru KAMEISHI, Yuhei FUKUO
  • Publication number: 20170115383
    Abstract: An ultrasonic diagnostic apparatus according to a present embodiment includes a transmission circuit, a reception circuit, a data processing circuit, an image generating circuit, a switching power supply circuit, and a control circuit. The switching power supply circuit is configured to generate a drive voltage for at least one of the transmission circuit, the reception circuit, the data processing circuit, and the image generating circuit. The control circuit is configured to control the transmission circuit to repeatedly transmit an ultrasonic pulse, and control a timing of a switching operation of the switching power supply circuit to synchronize the timing with a transmission timing or a reception timing of the ultrasonic pulse.
    Type: Application
    Filed: August 25, 2016
    Publication date: April 27, 2017
    Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Nobuyuki IWAMA, Yuhei FUKUO, Koichi MORIKAWA, Wataru KAMEISHI, Isao UCHIUMI, Hiroyuki SHIBANUMA
  • Publication number: 20160151039
    Abstract: According to one embodiment, an ultrasound diagnosis apparatus includes a transmitter, a receiver, a needle tip position acquisition unit, a ROI setting unit, an image generator, and a display controller. The transmitter transmits ultrasound beams to a subject into which a puncture needle is inserted while scanning the subject. The receiver receives signals reflected from the subject. The needle tip position acquisition unit successively acquires the position of the needle tip of the puncture needle. The ROI setting unit sets a region of interest at least in a direction in which the puncture needle is inserted. The image generator generates an image of the region of interest according to the position of the needle tip based on the signals. The display controller displays the image of the region of interest.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 2, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Koichi MORIKAWA, Isao Uchiumi, Nobuyuki Iwama, Toru Hirano, Hironobu Hongou, Yuhei Fukuo
  • Patent number: 9354313
    Abstract: An ultrasound diagnostic apparatus including oscillation elements configured to transmit toward and receive from a region of a subject, a receiving delay setting unit configured to divide the oscillation elements into oscillation element groups and set a common delay to oscillation elements included in each of the oscillation element groups in accordance with an imaging condition, an adding unit configured to add received signals transmitted from the oscillation elements in accordance with the delay set by the received delay setting unit, and an image generating unit configured to generate image data in accordance with received signal added by adding unit.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: May 31, 2016
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Nobuyuki Iwama
  • Publication number: 20160095582
    Abstract: In general, according to one embodiment, an ultrasonic diagnostic apparatus includes an ultrasonic probe, a plurality of power supplies implemented by circuitry, at least one pulser, and a controller implemented by circuitry. The ultrasonic probe includes a plurality of piezoelectric transducers which generate ultrasonic waves in response to supplied driving signals. The pulser outputs the driving signal based on an applied voltage applied from any one of the plurality of power supplies. The controller switches the plurality of power supplies in accordance with the at least one pulser used for generation of the driving signal in one transmission mode period.
    Type: Application
    Filed: October 1, 2015
    Publication date: April 7, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems Corporation
    Inventors: Nobuyuki IWAMA, Hironobu HONGOU, lsao UCHIUMI, Koichi MORIKAWA, Takatoshi OKUMURA
  • Publication number: 20150359511
    Abstract: An ultrasonic diagnostic device according to an embodiment includes an ultrasonic probe and transformer circuitry. The ultrasonic probe transmits ultrasonic waves to a subject and converts reflection waves reflected by the subject to a reflection wave signal. The transformer circuitry includes an auto transformer that transforms the reflection wave signal at a transformation ratio in accordance with a control signal based on information related to the ultrasonic probe among a plurality of transformation ratios.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 17, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Isao UCHIUMI, Nobuyuki IWAMA, Yasuo MIYAJIMA, Hironobu HONGOU, Takatoshi OKUMURA, Koichi MORIKAWA
  • Publication number: 20150216508
    Abstract: An ultrasound diagnosis apparatus includes a transmitting and receiving circuitry, an input circuitry, and a processing circuitry. The transmitting and receiving circuitry transmits a first ultrasound wave used for changing the shape of a tissue in the body of a patient and transmits/receives a second ultrasound wave that is transmitted/received with timing different from that of the first ultrasound wave. The input circuitry receives an input of a request indicating that the first ultrasound wave should be transmitted. When the input circuitry has received the input of the request indicating that the first ultrasound wave should be transmitted, the processing circuitry controls the transmission of the first ultrasound wave in accordance with the strength of a reflected-wave signal of the second ultrasound wave or one or more pixel values of an image resulting from an imaging process performed by using the reflected-wave signal of the second ultrasound wave.
    Type: Application
    Filed: April 17, 2015
    Publication date: August 6, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Nobuyuki IWAMA, Hironobu HONGOU, Isao UCHIUMI, Koichi MORIKAWA, Yasuo MIYAJIMA, Takatoshi OKUMURA
  • Publication number: 20150164483
    Abstract: An ultrasonic diagnosis apparatus includes an ultrasonic probe, an image generation unit, a display unit, and a control unit. The image generation unit generates image data from a reflected wave received from the ultrasonic probe. The display unit displays the image data. The ultrasonic probe includes a plurality of temperature sensors that measure the temperature of the ultrasonic probe and a switching circuit that is connected to the respective temperature sensors and switches connection to any one of the temperature sensors to a valid state to output data from the temperature sensors to a temperature detector. The control unit includes an instruction unit that instructs the switching circuit to switch connection to any one of the temperature sensors to a valid state at a predetermined time interval and a determination unit that determines whether a temperature measured by the temperature detector is within a set temperature range.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 18, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yasuo MIYAJIMA, Hironobu HONGOU, Isao UCHIUMI, Nobuyuki IWAMA, Koichi MORIKAWA, Takatoshi OKUMURA
  • 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