Patents by Inventor Yoichi Haga

Yoichi Haga 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: 20190290244
    Abstract: A ultrasound probe according to this invention is provided with: a first dry film resist having a plurality of first apertures formed in an array shape, and respectively supporting the piezoelectric elements in close contact with a rim part of each of the first apertures in a state of partly exposing the function elements; a second dry film resist laminated on the first dry film resist, and also having second apertures respectively enclosing each of the function elements, the second dry film resist being of a thickness equivalent to that of each of the function elements; and a third dry film resist laminated on the second dry film resist, and also having third apertures, and respectively sandwiching each of the piezoelectric elements with the first dry film resist in a state of partly exposing the piezoelectric elements in close contact with a rim part of each of the third apertures.
    Type: Application
    Filed: August 15, 2017
    Publication date: September 26, 2019
    Applicants: Ulvac, Inc., Tohoku University
    Inventors: Taichi SUZUKI, Koh FUWA, Ken MAEHIRA, Yasutomo OHASHI, Katsuhiro FUJITA, Yoichi HAGA, Tadao MATSUNAGA
  • Publication number: 20190117258
    Abstract: A cochlear implant insertion-assisting device includes a tubular member configured to hold a cochlear implant. The tubular member includes a cut extending in a longitudinal direction. The cochlear implant insertion-assisting device can selectively switch between a first state in which the cochlear implant is held and a second state in which the cochlear implant can be released.
    Type: Application
    Filed: March 31, 2017
    Publication date: April 25, 2019
    Inventors: Daisuke YAMAUCHI, Yoichi HAGA, Tetsuaki KAWASE, Yukio KATORI, Kyoichi AKIYAMA, Tadao MATSUNAGA
  • Patent number: 9618741
    Abstract: An optical scanning apparatus for efficiently performing scanning with light by efficiently increasing amplitude of an emission end of an optical fiber is provided. The optical scanning apparatus includes an optical fiber that guides illumination light emitted from a light source so that the illumination light is emitted from the emission end, a magnetic body fixed to the optical fiber, and a magnetic field generating unit changing a magnetic field to act on the magnetic body to displace a position of the emission end in a radial direction by magnetic force, and the magnetic field generating unit includes a plurality of coils for individually generating magnetic fields acting on the magnetic body at positions separate from each other in a longitudinal direction of the optical fiber, and the magnetic fields acting on the magnetic body can be individually adjusted at the positions.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: April 11, 2017
    Assignees: OLYMPUS CORPORATION, TOHOKU UNIVERSITY
    Inventors: Atsuyoshi Shimamoto, Yoichi Haga, Tadao Matsunaga
  • Patent number: 9283354
    Abstract: In order to provide a catheter which can be operated even when it is deformed inside a bent blood vessel and whose movable part can be easily bent and the movable part thus bent is firmly kept in this shape, a catheter includes: a fluid-driven actuator including: a balloon; a restricting member for restricting inflation of the balloon in a short axis direction of the catheter; and a tube which is less stretchable in a long axis direction of the catheter than the balloon is, according to a cross-sectional view of the fluid-driven actuator taken along the short axis direction of the catheter, the tube being eccentrically provided with respect to the restricting member.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: March 15, 2016
    Assignee: KANEKA CORPORATION
    Inventors: Manabu Kishida, Yoichi Haga
  • Publication number: 20150331233
    Abstract: An optical scanning apparatus for efficiently performing scanning with light by efficiently increasing amplitude of an emission end of an optical fiber is provided. The optical scanning apparatus includes an optical fiber that guides illumination light emitted from a light source so that the illumination light is emitted from the emission end, a magnetic body fixed to the optical fiber, and a magnetic field generating unit changing a magnetic field to act on the magnetic body to displace a position of the emission end in a radial direction by magnetic force, and the magnetic field generating unit includes a plurality of coils for individually generating magnetic fields acting on the magnetic body at positions separate from each other in a longitudinal direction of the optical fiber, and the magnetic fields acting on the magnetic body can be individually adjusted at the positions.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Applicants: TOHOKU UNIVERSITY, OLYMPUS CORPORATION
    Inventors: Atsuyoshi SHIMAMOTO, Yoichi HAGA, Tadao MATSUNAGA
  • Patent number: 8944995
    Abstract: An insertion device and an endoscope which are inserted and extracted through a small incision and have multiple functions. A device body has grip forceps as a treatment means. A first folding back section and a second folding back section are provided at a distal portion of the device body such that the first and second folding back sections are aligned in a row in the longitudinal direction of the device body. The first folding back section and the second folding back section respectively have image obtaining means. An operation means can move the first folding back section to a folded back position in which the first folding back section is folded back relative to the second folding back section, and can also move the second folding back section to a position in which the second folding back section is folded back relative to the device body.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: February 3, 2015
    Assignee: Tohoku University
    Inventors: Shinichirou Suda, Yoichi Haga, Tadao Matsunaga
  • Publication number: 20120232346
    Abstract: An insertion device and an endoscope which are inserted and extracted through a small incision and have multiple functions. A device body has grip forceps as a treatment means. A first folding back section and a second folding back section are provided at a distal portion of the device body such that the first and second folding back sections are aligned in a row in the longitudinal direction of the device body. The first folding back section and the second folding back section respectively have image obtaining means. An operation means can move the first folding back section to a folded back position in which the first folding back section is folded back relative to the second folding back section, and can also move the second folding back section to a position in which the second folding back section is folded back relative to the device body.
    Type: Application
    Filed: November 22, 2010
    Publication date: September 13, 2012
    Applicant: TOHOKU UNIVERSITY
    Inventors: Shinichirou Suda, Yoichi Haga, Tadao Matsunaga
  • Publication number: 20100249824
    Abstract: In order to provide a catheter which can be operated even when it is deformed inside a bent blood vessel and whose movable part can be easily bent and the movable part thus bent is firmly kept in this shape, a catheter includes: a fluid-driven actuator including: a balloon; a restricting member for restricting inflation of the balloon in a short axis direction of the catheter; and a tube which is less stretchable in a long axis direction of the catheter than the balloon is, according to a cross-sectional view of the fluid-driven actuator taken along the short axis direction of the catheter, the restricting member.
    Type: Application
    Filed: October 24, 2008
    Publication date: September 30, 2010
    Applicants: KANEKA CORPORATION, TOHOKU UNIVERSITY
    Inventors: Manabu Kishida, Yoichi Haga
  • Patent number: 7723896
    Abstract: A driving mechanism using shape memory alloys comprises a first and a second shape memory alloys coils (1, 2), a pin-like drive member (3) connected to each of the shape memory alloys coils (1, 2) extending in the axis direction, a substrate (4) having a wiring pattern (11) and a drive circuit (4a) to supply current to the shape memory alloys coils (1, 2), and a magnetic latch part (9) to hold the drive member (3), and the magnetic latch part (9) has a latch position in the axis direction of the drive member (3), the drive circuit (4a) selectively current-drives the first and the second shape memory alloys coils (1, 2), the driven first or second shape memory alloys coils (1, 2) is heated and compressed to move the drive member (3) in the axis direction, and magnetic bodies (9a, 9b) provided to the drive member (3) is magnetically fixed at the latch position, thereby fixed and held in the axis direction.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: May 25, 2010
    Assignees: Japan Science and Technology Agency
    Inventors: Masayoshi Esashi, Yoichi Haga, Masanori Mizushima, Tadao Matsunaga
  • Publication number: 20080227060
    Abstract: A driving mechanism using shape memory alloys comprises a first and a second shape memory alloys coils (1, 2), a pin-like drive member (3) connected to each of the shape memory alloys coils (1, 2) extending in the axis direction, a substrate (4) having a wiring pattern (11) and a drive circuit (4a) to supply current to the shape memory alloys coils (1, 2), and a magnetic latch part (9) to hold the drive member (3), and the magnetic latch part (9) has a latch position in the axis direction of the drive member (3), the drive circuit (4a) selectively current-drives the first and the second shape memory alloys coils (1, 2), the driven first or second shape memory alloys coils (1, 2) is heated and compressed to move the drive member (3) in the axis direction, and magnetic bodies (9a, 9b) provided to the drive member (3) is magnetically fixed at the latch position, thereby fixed and held in the axis direction.
    Type: Application
    Filed: January 19, 2005
    Publication date: September 18, 2008
    Applicants: Japan Science And Technology Agency, Yoichi
    Inventors: Masayoshi Esashi, Yoichi Haga, Masanori Mizushima, Tadao Matsunaga
  • Patent number: 7236283
    Abstract: A scanning mirror unit for scanning a beam comprises: at least one cantilever which is formed by bonding an elastic material and a piezoelectric material together and supported by a base at its one end; and a movable mirror which is supported at least by a free end of the cantilever at its peripheral part. When voltage is applied to the piezoelectric material, the free end of the cantilever moves in a prescribed direction to press and move the peripheral part of the movable mirror while leaving a central part of the movable mirror at substantially the same position to cause a tilt to the movable mirror. With such composition of the scanning mirror unit, a reflecting member having a sufficient thickness (e.g. some hundreds of microns) can be employed for the movable mirror, by which a high power laser beam effective for treatment of affected parts, etc. can be reflected finely and durably.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: June 26, 2007
    Assignees: PENTAX Corporation, Esashi, Masayoshi, Haga, Yoichi
    Inventors: Naoki Kikuchi, Masayoshi Esashi, Yoichi Haga, Masanori Maeda
  • Patent number: 7223329
    Abstract: A method of making an active slender tube as implemented as a catheter, guide wire, or any other medical or non-medical micro-mechanical or -system or system's active micro-component is disclosed, comprising preparing an actuator made from a shape memory alloy (SMA) and forming at least a portion of a tubular body; disposing outside of SMA made actuator an elastically deformable outer skeleton coaxially therewith; and fastening together SMA made actuator and outer skeleton wire adjacent to non-insulated portions, step of fastening includes a step of passing an electric current through a lead wire while in an electroplating liquid to deposit a metal on lead wire and non-insulated portions from said liquid and thereby to electrically join SMA made actuator and outer skeleton together at corresponding areas.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: May 29, 2007
    Inventors: Masayoshi Esashi, Yoichi Haga
  • Publication number: 20070083084
    Abstract: An active tube and its system are offered which can be directed by bending its tip, controlling the degree of bend, thereby easily capable of insertion into difficult positions, and which can be driven at low temperature at which it can be used for inspection and medical treatment. A bending mechanism (21) is constructed by wiring an SMA coil (21e) along an outer side of a working channel tube (21a). The bending mechanism (21) is inserted into an outer skin tube (25) with a plurality of built-in weights (22). A front tip (23) is attached to the front end side of the bending mechanism (21) as a tip (2) of an active tube (1). A main tube (4) is connected through the working channel tube (21a) at the tip (2). A wire (21g) is connected to the SMA coil (21e). Said wire (21g) is inserted to the behind end side (41) of the main tube (4) in a wiring channel (4B9 of the main tube, thereby makes it possible to drive the bending mechanism (21) from outside.
    Type: Application
    Filed: December 10, 2004
    Publication date: April 12, 2007
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, Masayoshi ESASHI, Yoichi HAGA
    Inventors: Masayoshi Esashi, Yoichi Haga, Masanori Mizushima, Tadao Matsunaga
  • Publication number: 20060074372
    Abstract: Catheter of such a structure that Ti—Ni superelastic allow (SEA) tube has its outside covered with thin-film silicone rubber tube. The SEA tube at part whose flexion is desired is wrought to cut off multiple grooves (crenas) with thin joints left. The covering with the silicone rubber tube is effected without the use of its front end portion in the covering. When a negative pressure is applied to physiological saline placed therein, the front end portion works as a valve, and the silicone rubber tube at the wrought part yields inward so that flexion of the catheter occurs at that part.
    Type: Application
    Filed: November 17, 2003
    Publication date: April 6, 2006
    Applicant: TOHOKU TECHNO ARCH CO., LTD.
    Inventors: Yoichi Haga, Masayoshi Esashi, Takashi Mineta, Yuta Muyari
  • Patent number: 6936015
    Abstract: An active guide wire (1) that can be used in a narrow blood vessel in a complicate vascular system such as intracerebral is disclosed as well as a method of making the same. The active wire comprises a bias coil spring (3); an outer tube (4) having the bias coil spring (3) sheathed therewith and providing an external wall for the active wire guide (1); and a shape memory alloy (SMA) actuator (5) in the form of a flat sheet anchored in and securely connected to the outer tube (4), wherein the flat sheet SMA actuator (5) is shape memorized so as to bend in a direction of the thickness of the flat sheet and has a shape running zigzag longitudinally thereof. The actuator (5) is energized with an electric current and thereby heated to have its leading end bent.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: August 30, 2005
    Inventors: Masayoshi Esashi, Yoichi Haga, Takashi Mineta
  • Publication number: 20050006009
    Abstract: An active slender tube as implemented as a catheter, guide wire, or any other medical or non-medical micro-mechanical or -system or system's active micro-component is disclosed that has a simple structure which facilitates the active slender tube to be reduced in diameter and with the capability of being multi-functionalized. The slender tube is provided in its distal, active end portion in the form of “J” with a bending, a torsionally rotating, an extending and retracting and/or a stiffness control mechanism. These mechanisms are adapted to bend, torsionally rotate, extend/retract and adjust stiffness of, the active end portion, respectively, with precision. Each mechanism comprises an outer skeleton including a liner coil spring, and an SMA (shape memory alloy) made coil actuator disposed inside of the liner coil coaxially therewith and fastened thereto.
    Type: Application
    Filed: November 10, 2003
    Publication date: January 13, 2005
    Inventors: Masayoshi Esashi, Yoichi Haga
  • Publication number: 20040262507
    Abstract: A scanning mirror unit for scanning a beam comprises: at least one cantilever which is formed by bonding an elastic material and a piezoelectric material together and supported by a base at its one end; and a movable mirror which is supported at least by a free end of the cantilever at its peripheral part. When voltage is applied to the piezoelectric material, the free end of the cantilever moves in a prescribed direction to press and move the peripheral part of the movable mirror while leaving a central part of the movable mirror at substantially the same position to cause a tilt to the movable mirror. With such composition of the scanning mirror unit, a reflecting member having a sufficient thickness (e.g. some hundreds of microns) can be employed for the movable mirror, by which a high power laser beam effective for treatment of affected parts, etc. can be reflected finely and durably.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 30, 2004
    Applicants: PENTAX corporation
    Inventors: Naoki Kikuchi, Masayoshi Esashi, Yoichi Haga, Masanori Maeda
  • Patent number: 6820487
    Abstract: A reflective movable diaphragm unit 2 having diaphragm portions 25 formed by a circular SiO2 film, a mesa portion 22 and light-reflecting mirror portion 23 of the SiO2 film disposed in the center, and a ring-shaped spacer 24a and bonding layer 24b formed of metal layers in the circumferential edge portion of the diaphragm portion 25, whereby a pressure sensor is formed.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: November 23, 2004
    Inventors: Masayoshi Esashi, Yoichi Haga, Takashi Katsumata
  • Patent number: 6672338
    Abstract: An active slender tube as implemented as a catheter, guide wire, or any other medical or non-medical micro-mechanical or -system or system's active micro-component is disclosed that has a simple structure which facilitates the active slender tube to be reduced in diameter and with the capability of being multi-functionalized. The slender tube is provided in its distal, active end portion in the form of “J” with a bending, a torsionally rotating, an extending and retracting and/or a stiffness control mechanism. These mechanisms are adapted to bend, torsionally rotate, extend/retract and adjust stiffness of, the active end portion, respectively, with precision. Each mechanism comprises an outer skeleton including a liner coil spring, and an SMA (shape memory alloy) made coil actuator disposed inside of the liner coil coaxially therewith and fastened thereto.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: January 6, 2004
    Inventors: Masayoshi Esashi, Yoichi Haga
  • Publication number: 20030097080
    Abstract: An active guide wire (1) that can be used in a narrow blood vessel in a complicate vascular system such as intracerebral is disclosed as well as a method of making the same. The active wire comprises a bias coil spring (3); an outer tube (4) having the bias coil spring (3) sheathed therewith and providing an external wall for the active wire guide (1); and a shape memory alloy (SMA) actuator (5) in the form of a flat sheet anchored in and securely connected to the outer tube (4), wherein the flat sheet SMA actuator (5) is shape memorized so as to bend in a direction of the thickness of the flat sheet and has a shape running zigzag longitudinally thereof. The actuator (5) is energized with an electric current and thereby heated to have its leading end bent.
    Type: Application
    Filed: June 6, 2002
    Publication date: May 22, 2003
    Applicant: Masayoshi ESASHI
    Inventors: Masayoshi Esashi, Yoichi Haga, Takashi Mineta