Patents by Inventor Koetsu Saito

Koetsu Saito 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: 20190388058
    Abstract: An ultrasonic probe includes: a piezoelectric element that transmits and receives an ultrasonic wave; one or a plurality of acoustic matching layers disposed on a subject side of the piezoelectric element; and a conductor layer that applies a voltage to the piezoelectric element, wherein the conductor layer is disposed between the piezoelectric element and the acoustic matching layer, or between the plurality of acoustic matching layers, a magnitude of an acoustic impedance of the conductor layer is between a magnitude of an acoustic impedance of a layer disposed on one surface side of the conductor layer and a magnitude of an acoustic impedance of a layer disposed on the other surface side of the conductor layer, and the conductor layer has a Vickers hardness (Hv) of 50 or more and 600 or less.
    Type: Application
    Filed: May 16, 2019
    Publication date: December 26, 2019
    Inventors: Tatsuya NAITO, Koetsu Saito, Hisashi Minemoto
  • Patent number: 10490729
    Abstract: The ultrasound probe includes a piezoelectric element including a piezoelectric composition and an electrode that applies a voltage to the piezoelectric composition. The piezoelectric composition has piezoelectric characteristics expressed by any coordinates included in a region formed by a polyhedron having a plurality of predetermined points as vertexes in Cartesian coordinates (keff, ?33S, Ec) including variables keff, ?33S and Ec.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: November 26, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Masashi Ozawa, Hisashi Minemoto, Junichi Kato, Koetsu Saito
  • Publication number: 20170365771
    Abstract: The ultrasound probe includes a piezoelectric element including a piezoelectric composition and an electrode that applies a voltage to the piezoelectric composition. The piezoelectric composition has piezoelectric characteristics expressed by any coordinates included in a region formed by a polyhedron having a plurality of predetermined points as vertexes in Cartesian coordinates (keff, ?33S, Ec) including variables keff, ?33S and Ec.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Inventors: Masashi OZAWA, Hisashi MINEMOTO, Junichi KATO, Koetsu SAITO
  • Patent number: 9220477
    Abstract: An ultrasonic diagnostic apparatus includes a controller, to which a probe and a monitor are connected, the probe having an array of transducers, in which a number of transducers are arranged in a first direction. The controller controls transmission of an ultrasonic beam using the array of transducers and reception of an echo signal reflected from a region of interest, generates image data based on the echo signal, and gets echo signals received from multiple points of the region of interest by either moving or swinging the array of transducers in a second direction that intersects with the first direction at right angles. If the sum of image data ranges of measured value retrievable portions of the region of interest at the multiple points synthesized based on the echo signals, is equal to or greater than a predetermined value, the controller calculates a detected value of the region of interest.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: December 29, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Makiko Urabe, Koetsu Saito, Akihiro Kawabata, Manabu Migita, Morio Nishigaki, Ryuichi Kato
  • Patent number: 8986213
    Abstract: An ultrasonic probe includes: a plurality of piezoelectric elements separated from each other by a gap; and an acoustic matching layer formed of a rubber elastic material on a surface of each of the plurality of piezoelectric elements. An acoustic impedance of the rubber elastic material is smaller than an acoustic impedance of the piezoelectric elements and larger than an acoustic impedance of a subject. The acoustic velocity of the rubber elastic material has a value of 1650 msec or less.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: March 24, 2015
    Assignee: Konica Minolta, Inc.
    Inventor: Koetsu Saito
  • Publication number: 20140005551
    Abstract: An ultrasound probe includes a piezoelectric material, a signal electrode provided on the piezoelectric material, and a ground electrode provided on the piezoelectric material. Ultrasound waves are emitted from the piezoelectric material by applying a voltage between the signal electrode and the ground electrode. A switching element switches a connection between the signal electrode and the ground electrode from a closed state to an open state, and vice versa, in accordance with a control signal for controlling whether or not to emit the ultrasound waves. The switching element changes from the closed state to the open state in accordance with the control signal for emitting the ultrasound waves, and changes from the open state to the closed state in accordance with the control signal for suspending emission of the ultrasound waves. The ultrasound probe can maintain the reliability of the piezoelectric material when the temperature is high or changes suddenly.
    Type: Application
    Filed: August 8, 2013
    Publication date: January 2, 2014
    Applicant: Panasonic Corporation
    Inventors: Masashi OZAWA, Koetsu SAITO
  • Patent number: 8562534
    Abstract: Provided is an ultrasonic probe, which can be improved in quality, which can acquire characteristics of a high sensitivity and a wide band and which can acquire an ultrasonic image of a high resolution. In this ultrasonic probe, grooves (160) are formed and utilized to form piezoelectric elements (110) and first acoustic matching layers (121) in a curved shape thereby to converge ultrasonic waves without any acoustic lens. Moreover, signal conductors (150) are disposed on the signal electrode faces of the piezoelectric elements (110).
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: October 22, 2013
    Assignee: Panasonic Corporation
    Inventor: Koetsu Saito
  • Publication number: 20130245453
    Abstract: An ultrasonic probe includes: a plurality of piezoelectric elements separated from each other by a gap; and an acoustic matching layer formed of a rubber elastic material on a surface of each of the plurality of piezoelectric elements. An acoustic impedance of the rubber elastic material is smaller than an acoustic impedance of the piezoelectric elements and larger than an acoustic impedance of a subject. The acoustic velocity of the rubber elastic material has a value of 1650 msec or less.
    Type: Application
    Filed: May 2, 2013
    Publication date: September 19, 2013
    Applicant: Panasonic Corporation
    Inventor: Koetsu Saito
  • Patent number: 8454518
    Abstract: An ultrasonic probe is provided capable of eliminating difficulties in processing, increasing the directivity of ultrasonic waves, and obtaining a high-resolution diagnostic image. An ultrasonic probe 10 is configured to include a plurality of piezoelectric elements 1, an acoustic matching layer 2 provided on a front surface in the thickness direction at a subject side (upper side in the drawing) so as to correspond to the respective piezoelectric elements 1, a backing load member 3 provided, as necessary, on a rear surface (lower surface in the drawing) in the thickness direction of the piezoelectric elements 1 at a side opposite to the acoustic matching layer 2, and an acoustic lens 4 provided, as necessary, on the acoustic matching layer 2. The acoustic matching layer 2 is formed of a rubber elastic material and arranged in a non-divided, flat surface shape at one side of the plurality of piezoelectric elements 1.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 4, 2013
    Assignee: Panasonic Corporation
    Inventor: Koetsu Saito
  • Patent number: 8319399
    Abstract: A technology is disclosed for actualizing an ultrasound probe that can obtain a high-resolution diagnostic image and is highly reliable. In the technology, a piezoelectric element has a predetermined thickness, a ground electrode is formed on one surface in a thickness direction, and a signal electrode is formed on the other surface. When an acoustic matching layer is laminated on a ground electrode formation surface of the piezoelectric element, the acoustic matching layer is configured by a composite material made of a plurality of materials including at least a conductive member. The conductive member has portions penetrating in a layer thickness direction at a plurality of sections on the one electrode formation surface of the piezoelectric element.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventor: Koetsu Saito
  • Publication number: 20120296214
    Abstract: An ultrasonic diagnostic apparatus that enables even an unskilled person to get accurate detection done is provided. The ultrasonic diagnostic apparatus includes a controller, to which a probe and a monitor are connected, the probe having an array of transducers, in which a number of transducers are arranged in a first direction.
    Type: Application
    Filed: December 17, 2010
    Publication date: November 22, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Makiko Urabe, Koetsu Saito, Akihiro Kawabata, Manabu Migita, Morio Nishigaki, Ryuichi Kato
  • Publication number: 20110319768
    Abstract: Provided are an ultrasonic transducer, an ultrasonic probe, and an ultrasonic diagnostic device which enable an ultrasonic beam in the depth direction of diagnosis to be narrowly focused in a wide region, thereby obtaining a high-resolution diagnostic image. An ultrasonic transducer (100) is provided with an ultrasonic vibrator (110), a shape change layer (120) which is provided on the subject side of the ultrasonic vibrator and the shape of which is changed by an electrical signal, electrodes (141, 142) which are respectively disposed on both surfaces of the shape change layer (120), and a variable power source (140) which applies the electrical signal between the electrodes (141, 142), wherein the variable power source (140) varies the focus or diffusion of the ultrasonic beam by changing the shape of the shape change layer (120); by controlling the electrical signal to be applied between the electrodes (141, 142).
    Type: Application
    Filed: March 3, 2010
    Publication date: December 29, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: Koetsu Saito
  • Patent number: 7755255
    Abstract: A technique that can make a heat radiation effect higher and makes even a transmission voltage of an ultrasonic diagnostic apparatus higher and then makes a diagnostic depth deeper is disclosed.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: July 13, 2010
    Assignee: Panasonic Corporation
    Inventors: Koetsu Saito, Junichi Takeda
  • Publication number: 20100066207
    Abstract: A technology is disclosed for actualizing an ultrasound probe that can obtain a high-resolution diagnostic image and is highly reliable. In the technology, a piezoelectric element 1 has a predetermined thickness, a ground electrode is formed on one surface in a thickness direction, and a signal electrode 6 is formed on the other surface. When an acoustic matching layer 2 is laminated on a ground electrode formation surface of the piezoelectric element, the acoustic matching layer is configured by a composite material made of a plurality of materials including at least a conductive member 20. The conductive member has portions penetrating in a layer thickness direction at a plurality of sections on the one electrode formation surface of the piezoelectric element.
    Type: Application
    Filed: November 2, 2007
    Publication date: March 18, 2010
    Applicant: PANASONIC CORPORATION
    Inventor: Koetsu Saito
  • Patent number: 7575552
    Abstract: There is provided an ultrasonic probe that can transmit and receive ultrasonic waves with high sensitivity and can drive an ultrasonic transducing part smoothly at high speed. The ultrasonic probe according to the present invention includes: an ultrasonic transducing part 101 for transmitting and receiving an ultrasonic wave; an outer case 105 for storing the ultrasonic transducing part 101; and an acoustic medium 106 charged in the outer case 105, wherein the acoustic medium 106 contains 1,2-butylene glycol.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: August 18, 2009
    Assignee: Panasonic Corporation
    Inventor: Koetsu Saito
  • Publication number: 20090069691
    Abstract: Provided is an ultrasonic probe, which can be improved in quality, which can acquire characteristics of a high sensitivity and a wide band and which can acquire an ultrasonic image of a high resolution. In this ultrasonic probe, grooves (160) are formed and utilized to form piezoelectric elements (110) and first acoustic matching layers (121) in a curved shape thereby to converge ultrasonic waves without any acoustic lens. Moreover, signal conductors (150) are disposed on the signal electrode faces of the piezoelectric elements (110).
    Type: Application
    Filed: April 27, 2007
    Publication date: March 12, 2009
    Applicant: PANASONIC CORPORATION
    Inventor: Koetsu Saito
  • Publication number: 20090062655
    Abstract: An ultrasonic probe is provided capable of eliminating difficulties in processing, increasing the directivity of ultrasonic waves, and obtaining a high-resolution diagnostic image. An ultrasonic probe 10 is configured to include a plurality of piezoelectric elements 1, an acoustic matching layer 2 provided on a front surface in the thickness direction at a subject side (upper side in the drawing) so as to correspond to the respective piezoelectric elements 1, a backing load member 3 provided, as necessary, on a rear surface (lower surface in the drawing) in the thickness direction of the piezoelectric elements 1 at a side opposite to the acoustic matching layer 2, and an acoustic lens 4 provided, as necessary, on the acoustic matching layer 2. The acoustic matching layer 2 is formed of a rubber elastic material and arranged in a non-divided, flat surface shape at one side of the plurality of piezoelectric elements 1.
    Type: Application
    Filed: January 25, 2007
    Publication date: March 5, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Koetsu Saito
  • Patent number: 7424771
    Abstract: A method of preparing a composite sheet unit includes arranging a plurality of sintered piezoelectric thin wires in a uniform direction on a surface of a resin layer is prepared. A plurality of the same are laminated and integrated so that the sintered piezoelectric thin wires are positioned between the resin layers. Here, a curing resin may be impregnated therein so as to form resin-impregnated-cured portions. Then, the lamination is cut in a direction crossing a lengthwise direction of the sintered piezoelectric thin wires, so that a piezocomposite is obtained. Cut surfaces may be ground. By so doing, it is possible to provide a highly reliable piezocomposite having a fine structure at low cost, and to provide an ultrasonic probe for ultrasonic diagnostic equipment, as well as ultrasonic diagnostic equipment using the same.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: September 16, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seigo Shiraishi, Norihisa Takahara, Emiko Igaki, Hidetomo Nagahara, Koetsu Saito
  • Publication number: 20070276248
    Abstract: A technique that can make a heat radiation effect higher and makes even a transmission voltage of an ultrasonic diagnostic apparatus higher and then makes a diagnostic depth deeper is disclosed.
    Type: Application
    Filed: September 30, 2004
    Publication date: November 29, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koetsu Saito, Junichi Takeda
  • Publication number: 20070112271
    Abstract: There is provided an ultrasonic probe that can transmit and receive ultrasonic waves with high sensitivity and can drive an ultrasonic transducing part smoothly at high speed. The ultrasonic probe according to the present invention includes: an ultrasonic transducing part 101 for transmitting and receiving an ultrasonic wave; an outer case 105 for storing the ultrasonic transducing part 101; and an acoustic medium 106 charged in the outer case 105, wherein the acoustic medium 106 contains 1,2-butylene glycol.
    Type: Application
    Filed: May 19, 2005
    Publication date: May 17, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventor: Koetsu Saito