Patents by Inventor Akiko Mizunuma

Akiko Mizunuma 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: 8930169
    Abstract: A capacitive ultrasonic transducer (c-MUT) comprising a silicon substrate and a transducer element which comprises transducer cells, each of which is constituted by a first electrode equipped on the top surface of the silicon substrate, a second electrode placed opposite to the first electrode with a predetermined gap therefrom and a membrane for supporting the second electrode, wherein a trench is equipped between the adjacent transducers and a conductive film is formed in the trench.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: January 6, 2015
    Assignee: Olympus Corporation
    Inventors: Hideo Adachi, Katsuhiro Wakabayashi, Akiko Mizunuma, Atsushi Osawa, Tatsuo Kaimai, Shinji Yasunaga, Kiyoshi Nemoto, Miyuki Murakami, Kousei Tamiya, Yu Kondo
  • Patent number: 8876699
    Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: November 4, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Masatoshi Sato, Kunihide Kaji, Takayuki Suzuki, Junji Shiono, Takayasu Mikkaichi, Akiko Mizunuma
  • Patent number: 8398551
    Abstract: It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane on which one electrode is formed, a cavity constructed in its backface, and a substrate on which these are mounted and supported and on whose surface an electrode is provided, on a surface in an ultrasonic transmission and reception side, characterized in that the membrane comprises tow or more layers, and at least one layer of them comprises a high dielectric constant film.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: March 19, 2013
    Assignee: Olympus Corporation
    Inventors: Hideo Adachi, Yukihiko Sawada, Katsuhiro Wakabayashi, Akiko Mizunuma, Takuya Imahashi, Etsuko Omura, Yoshiyuki Okuno, Shuji Otani, Miyuki Murakami, Kiyoshi Nemoto, Kozaburo Suzuki, Naomi Shimoda
  • Patent number: 8303508
    Abstract: An ultrasound endoscope has an ultrasound probe which is disposed at a distal end side of a distal end rigid portion configuring a distal end portion out of a flexible tube portion, a bending portion and the distal end rigid portion configuring an insertion portion, and forms an ultrasound scanning surface having a normal line in a direction orthogonal to an endoscope insertion axis L1, and a treatment instrument outlet of a treatment hole in the distal end rigid portion. The ultrasound probe is configured by a plurality of ultrasound transducers arranged in a convex circular arc shape, and a center of curvature of the plurality of ultrasound transducers is disposed at a proximal end side from the treatment instrument outlet.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 6, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Katsuhiro Wakabayashi, Hideo Adachi, Takanao Fujimura, Yukihiko Sawada, Akiko Mizunuma, Takuya Imahashi, Sunao Sato
  • Patent number: 8134280
    Abstract: An electronic radial ultrasonic probe comprising an electronic radial array which comprises a plurality of ultrasonic transducers being continuously arrayed circularly around an insertion axis as center and also for which a transmission/reception of an ultrasonic wave is controlled by electronically selecting the plurality of ultrasonic transducer, comprises: a support member equipped on the electronic radial array; a lock member featured with a cavity in which the support member is inserted and with a lock groove for locking a balloon which is mounted in a manner to cover the electronic radial array and in which an ultrasonic medium is filled; and a filler member which is constituted by an adhesive material converting from a fluid state to a solid state, and is filled in the cavity.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: March 13, 2012
    Assignees: Olympus Medical Systems Corp., Olympus Corporation
    Inventors: Yukihiko Sawada, Akiko Mizunuma, Katsuhiro Wakabayashi, Takuya Imahashi, Sunao Sato
  • Patent number: 8076824
    Abstract: An electronic radial ultrasonic probe comprising an electronic radial array which comprises a plurality of ultrasonic transducers being continuously arrayed circularly around an insertion axis as center and also for which a transmission/reception of an ultrasonic wave is controlled by electronically selecting the plurality of ultrasonic transducer, comprises: a support member equipped on the electronic radial array; a lock member featured with a cavity in which the support member is inserted and with a lock groove for locking a balloon which is mounted in a manner to cover the electronic radial array and in which an ultrasonic medium is filled; and a filler member which is constituted by an adhesive material converting from a fluid state to a solid state, and is filled in the cavity.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: December 13, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Yukihiko Sawada, Akiko Mizunuma, Katsuhiro Wakabayashi, Takuya Imahashi, Sunao Sato
  • Patent number: 8066643
    Abstract: The present invention provides an ultrasonic endoscope, comprising: an ultrasonic transducer in a cylindrical shape including a plurality of piezoelectric devices, an acoustic matching layer stacked on a principal plane on a sound emitting plane side, an acoustic lens on a plane of the acoustic matching layer opposite to a plane facing the piezoelectric devices, and a backing material stacked on another principal planes of the piezoelectric devices; an endoscopic observation and endo-therapy unit provided, for performing endoscopic image observation, at a proximal end side of the ultrasonic transducer; a cable assembly including a plurality of cables for transmitting signals to and from the ultrasonic transducer. In the above configuration, the cable assembly is arranged in such a manner that the cable assembly passes through an inside portion of the ultrasonic transducer, and is connected to the ultrasonic transducer at a distal end side of the ultrasonic transducer.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: November 29, 2011
    Assignee: Olympus Corporation
    Inventors: Takuya Imahashi, Akiko Mizunuma, Yukihiko Sawada, Katsuhiro Wakabayashi, Sunao Sato
  • Publication number: 20110218443
    Abstract: An electronic radial ultrasonic probe comprising an electronic radial array which comprises a plurality of ultrasonic transducers being continuously arrayed circularly around an insertion axis as center and also for which a transmission/reception of an ultrasonic wave is controlled by electronically selecting the plurality of ultrasonic transducer, comprises: a support member equipped on the electronic radial array; a lock member featured with a cavity in which the support member is inserted and with a lock groove for locking a balloon which is mounted in a manner to cover the electronic radial array and in which an ultrasonic medium is filled; and a filler member which is constituted by an adhesive material converting from a fluid state to a solid state, and is filled in the cavity.
    Type: Application
    Filed: May 18, 2011
    Publication date: September 8, 2011
    Applicants: OLYMPUS MEDICAL SYSTEMS CORP., OLYMPUS CORPORATION
    Inventors: Yukihiko Sawada, Akiko Mizunuma, Katsuhiro Wakabayashi, Takuya Imahashi, Sunao Sato
  • Publication number: 20110213592
    Abstract: A capacitive ultrasonic transducer (c-MUT) comprising a silicon substrate and a transducer element which comprises transducer cells, each of which is constituted by a first electrode equipped on the top surface of the silicon substrate, a second electrode placed opposite to the first electrode with a predetermined gap therefrom and a membrane for supporting the second electrode, wherein a trench is equipped between the adjacent transducers and a conductive film is formed in the trench.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 1, 2011
    Applicant: OLYMPUS CORPORATION
    Inventors: Hideo Adachi, Katsuhiro Wakabayashi, Akiko Mizunuma, Atsushi Osawa, Tatsuo Kaimai, Shinji Yasunaga, Kiyoshi Nemoto, Miyuki Murakami, Kousei Tamiya, Yu Kondo
  • Patent number: 7994689
    Abstract: An ultrasonic transducer arraying at even intervals ultrasonic transducers for transmitting and receiving ultrasonic waves and layering a plurality of acoustic matching layers on them, comprising an transducer shape forming member made of a fiber-reinforced thermosetting PPE for filling a gap formed on the side face of the ultrasonic transducer with the same material as that of the acoustic matching layer, mixing a colorant in a division member adjacent to a predefined ultrasonic transducer from among a plurality of ultrasonic transducers, and arraying the plurality thereof.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: August 9, 2011
    Assignee: Olympus Corporation
    Inventors: Yukihiko Sawada, Katsuhiro Wakabayashi, Akiko Mizunuma, Takuya Imahashi, Sunao Sato
  • Patent number: 7982362
    Abstract: An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode facing the first electrode with a prescribed space between the first and second electrodes; a membrane on which the second electrode is formed and which vibrates and generates the ultrasound when a voltage is applied between the first and second electrodes; a piezoelectric film contacting the membrane; and a third electrode electrically continuous to the piezoelectric film.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: July 19, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hideo Adachi, Katsuhiro Wakabayashi, Akiko Mizunuma, Yukihiko Sawada, Takuya Imahashi, Takanao Fujimura, Ki Doh
  • Publication number: 20110140576
    Abstract: An ultrasonic transducer arraying at even intervals ultrasonic transducers for transmitting and receiving ultrasonic waves and layering a plurality of acoustic matching layers on them, comprising an transducer shape forming member made of a fiber-reinforced thermosetting PPE for filling a gap formed on the side face of the ultrasonic transducer with the same material as that of the acoustic matching layer, mixing a colorant in a division member adjacent to a predefined ultrasonic transducer from among a plurality of ultrasonic transducers, and arraying the plurality thereof.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 16, 2011
    Applicant: OLYMPUS CORPORATION
    Inventors: Yukihiko Sawada, Katsuhiro Wakabayashi, Akiko Mizunuma, Takuya Imahashi, Sunao Sato
  • Patent number: 7892175
    Abstract: Within the tip portion of a cylindrical shaped sheath a capacitive ultrasonic transducer which is an array type two-dimensionally arrayed on the outer surface of the cylindrical face is disposed. Capacitive ultrasonic transducer units employ m capacitive ultrasonic transducer elements arrayed in the longitudinal direction of the cylindrical face as a division unit, thereby providing an arrangement wherein the respective capacitive ultrasonic transducer units are readily disposed in the circumferential direction, whereby radial scanning or the like can be performed within a body cavity.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: February 22, 2011
    Assignee: Olympus Corporation
    Inventors: Katsuhiro Wakabayashi, Hideo Adachi, Yukihiko Sawada, Takuya Imahashi, Masayoshi Omura, Etsuko Omura, legal representative, Akiko Mizunuma, Shuji Otani, Miyuki Murakami, Kiyoshi Nemoto, Kozaburo Suzuki, Naomi Shimoda
  • Patent number: 7883466
    Abstract: An ultrasonic probe apparatus which applies a RF pulse signal with a DC bias signal superimposed thereon to c-MUTs and transmits/receives an ultrasound wave is configured such that a transmission control system includes bias regulators which regulate the voltage value of the DC bias signal, a reception control system has a plurality of different frequency band pass filtering characteristics including at least those for a low pass and high pass and a frequency band pass filtering processing section which can select at least one frequency band pass filtering characteristic from those frequency band pass filtering characteristics. The apparatus controls voltage settings of the bias regulators in conjunction with the selection of frequency band pass filtering characteristics of the frequency band pass filtering processing section.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: February 8, 2011
    Assignee: Olympus Corporation
    Inventors: Hideo Adachi, Yoshiyjki Okuno, Akiko Mizunuma, Katsuhiro Wakabayashi, Takuya Imahashi, Yukihiko Sawada, Masayoshi Omura, Etsuko Omura, legal representative, Kozaburo Suzuki, Shuji Otani, Naomi Shimoda, Miyuki Murakami, Kiyoshi Nemoto
  • Patent number: 7880368
    Abstract: An ultrasonic transducer arraying at even intervals ultrasonic transducers for transmitting and receiving ultrasonic waves and layering a plurality of acoustic matching layers on them, comprising an transducer shape forming member made of a fiber-reinforced thermosetting PPE for filling a gap formed on the side face of the ultrasonic transducer with the same material as that of the acoustic matching layer, mixing a colorant in a division member adjacent to a predefined ultrasonic transducer from among a plurality of ultrasonic transducers, and arraying the plurality thereof.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: February 1, 2011
    Assignee: Olympus Corporation
    Inventors: Yukihiko Sawada, Katsuhiro Wakabayashi, Akiko Mizunuma, Takuya Imahashi, Sunao Sato
  • Publication number: 20100274138
    Abstract: An ultrasound transducer of the present invention includes elements each provided with an electromechanical conversion element that converts an electric signal inputted between a first electrode and a second electrode into vibration, an array section made up of n elements in a row direction and m elements in a column direction (nm) arranged in a matrix form, and an array forming section that switches between a one-dimensional array state column-wise made up of m element groups formed by electrically connecting the first electrode terminals neighboring in the row direction out of the first electrode terminals in the element groups arranged on the same column and a one-dimensional array state row-wise made up of n element groups formed by electrically connecting the first electrode terminals neighboring in the column direction out of the first electrode terminals in the element groups arranged on the same row in the array section.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 28, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Akiko MIZUNUMA, Yukihiko SAWADA, Katsuhiro WAKABAYASHI, Takanao FUJIMURA, Takuya IMAHASHI, Sunao SATO, Kei IRIE, Kozue KURIHARA, Hideo ADACHI
  • Publication number: 20100201222
    Abstract: An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode facing the first electrode with a prescribed space between the first and second electrodes; a membrane on which the second electrode is formed and which vibrates and generates the ultrasound when a voltage is applied between the first and second electrodes; a piezoelectric film contacting the membrane; and a third electrode electrically continuous to the piezoelectric film.
    Type: Application
    Filed: April 20, 2010
    Publication date: August 12, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hideo Adachi, Katsuhiro Wakabayashi, Akiko Mizunuma, Yukihiko Sawada, Takuya Imahashi, Takanao Fujimura, Ki Doh
  • Patent number: 7728490
    Abstract: A capacitive micromachined ultrasonic transducer having an ultrasonic wave transmission/reception surface formed by arranging a plurality of transducer cells each of which includes a membrane having a first electrode and a supporting film for supporting the first electrode, and also includes a second electrode arranged being opposite to the first electrode and being spaced apart from the first electrode at a prescribed interval, wherein: the transducer cells are arranged on the basis of resonant frequencies of the transducer cells.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: June 1, 2010
    Assignee: Olympus Corporation
    Inventors: Hideo Adachi, Etsuko Omura, Akiko Mizunuma, Katsuhiro Wakabayashi, Takuya Imahashi, Yukihiko Sawada, Shuji Otani, Miyuki Murakami, Kiyoshi Nemoto, Kozaburo Suzuki, Naomi Shimoda
  • Patent number: 7728487
    Abstract: An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode facing the first electrode with a prescribed space between the first and second electrodes; a membrane on which the second electrode is formed and which vibrates and generates the ultrasound when a voltage is applied between the first and second electrodes; a piezoelectric film contacting the membrane; and a third electrode electrically continuous to the piezoelectric film.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: June 1, 2010
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hideo Adachi, Katsuhiro Wakabayashi, Akiko Mizunuma, Yukihiko Sawada, Takuya Imahashi, Takanao Fujimura, Ki Doh
  • Publication number: 20100099947
    Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.
    Type: Application
    Filed: December 24, 2009
    Publication date: April 22, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Masatoshi Sato, Kunihide Kaji, Takayuki Suzuki, Junji Shiono, Takayasu Mikkaichi, Akiko Mizunuma