Acoustic Wave Type Generator Or Receiver Patents (Class 310/334)
  • 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
  • Patent number: 7982369
    Abstract: A base has a plurality of projections or recesses. Each of the projections or recesses corresponds to one channel of vibration elements. Each of the vibration elements has a plurality of MUT elements. Each of the MUT elements transmits and receives ultrasonic waves. A plurality of MUT elements are arranged in each of the projections or recesses. Consequently, each of the vibration elements can transmit and receive ultrasonic waves having radiation surfaces curved along the surfaces of the projections or recesses.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: July 19, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yasuhiro Ona, Koichi Shibamoto
  • Patent number: 7982366
    Abstract: An ultrasound transducer has a cup-shaped casing. The cup-shaped casing has a sidewall. A cross section of an inner surface of the sidewall being perpendicular to a central axis of the ultrasound transducer substantially shows a dumbbell-shaped contour. The dumbbell-shaped contour has a pair of opposite straight-line sections being substantially parallel to a longitudinal axis of the dumbbell-shaped contour and a pair of opposite arc sections being located respectively at two ends of the longitudinal axis of the dumbbell-shaped contour and respectively forming two enlarged portions of the dumbbell-shaped contour. Two ends of each arc section of the dumbbell-shaped contour respectively joint the straight-line sections through two curve sections and each curve section is connected to one end of the arc section and one straight-line section. At least one enlarged area of a dumbbell-shaped surface of an inside bottom surface has a recessed portion.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: July 19, 2011
    Assignees: Tung Thih Electronic Co., Ltd., National Taiwan University
    Inventors: Chih-Kung Lee, Wen-Jong Wu, Chih-Chiang Cheng, Chia-Yu Lin, Jen-Hsuan Ho, Chuin-Shan Chen, Jay Shieh, Wen-Hsin Hsiao
  • Patent number: 7976891
    Abstract: The apparatus and method use an optical feedback system to align a transducer with a stent strut. Once alignment is achieved, the transducer causes a coating to be ejected onto the stent strut and the transducer is moved along the stent strut to coat the stent strut.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: July 12, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Jason Van Sciver, Yung-Ming Chen, Lothar Kleiner
  • Patent number: 7973455
    Abstract: A case member of an ultrasonic sensor includes an outer case member having a substantially cylindrical shape with a bottom surface and an inner case member. Cutout portions having a predetermined size are arranged so as to face each other in a lower portion of a sidewall of the inner case member. The inner case member is made of a metal material having a density that is greater than that of the outer case member. Consequently, an elliptical vibrating-surface amplitude profile can be formed in a vibrating surface of the ultrasonic sensor, and an ultrasonic sensor having stable anisotropy in directional properties can be provided. Further, the ultrasonic sensor has a small amount of displacement of side vibration.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: July 5, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Junshi Ota
  • Patent number: 7973453
    Abstract: An ultrasonic transducer with a housing having an ultrasonic window in a first region of the housing for transmitting ultrasonic waves, and a transducer element located in the housing adjacent to the ultrasonic window. To prevent ultrasonic waves from being transmitted as housing waves between the first region of the housing, by way of at least one intermediate second region of the housing, to a third region of the housing on opposite side of the second region from the first region, in the second region of the housing, at least two weakly coupled mechanical resonators are provided which are arranged essentially in secession in the propagation direction of the housing waves.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 5, 2011
    Assignee: Krohne AG
    Inventor: Jereon Martin van Klooster
  • Patent number: 7969067
    Abstract: There is provided an ultrasound probe including a first substrate having a silicon substrate and an ultrasound transmit-receive element, an acoustic lens disposed over an upper surface of the first substrate, and a damping layer disposed under the first substrate, in which a second substrate is disposed between a lower surface of the first substrate and an upper surface of the damping layer, and the second substrate is made of a material having approximately the same linear expansion coefficient and acoustic impedance as the silicon substrate of the first substrate. With this structure, it is possible to provide the ultrasound probe which can prevent damage to the silicon substrate due to temperature change and has excellent transmission/reception performance and structure reliability while reducing noise by reflected waves in transmission and reception.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: June 28, 2011
    Assignee: Hitachi Medical Corporation
    Inventors: Takanori Aono, Tatsuya Nagata, Katsunori Asafusa, Takashi Kobayashi, Naoya Kanda
  • Patent number: 7969068
    Abstract: An ultrasonic transducer has a rectangular piezo-electric ceramic sheet piece 2 which has a retracted portion 1 on a side face, an upper electrode layer 3 placed on an upper surface of the ceramic sheet piece, 4 a first terminal electrode that is placed on the upper surface of the ceramic sheet piece and connected to the upper electrode layer 3, a lower electrode layer 5 placed on the lower surface of the ceramic sheet piece, an electro-conductive layer 6 that is placed on the retracted side face 1 and connected to the lower electrode layer 5, a second terminal electrode 7 that is placed on the upper surface of the ceramic sheet piece and is connected to the electro-conductive layer 6, a first lead wire 9a connected to the first terminal electrode, a second lead wire 9b connected to the second terminal electrode 7, an acoustic matching layer 10 placed on the upper electrode layer, and an acoustic absorbing layer 11 placed on the surface of the lower electrode layer.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: June 28, 2011
    Assignees: Ueda Japan Radio Co., Ltd., Terumo Kabushiki Kaisha
    Inventors: Yoichi Yokobori, Hiroyuki Yagami
  • Patent number: 7967755
    Abstract: The present invention relates to an ultrasonic probe comprising a group of piezoelectric elements consisting of a plurality of piezoelectric elements of a narrow card shape arrayed in a long-axis direction thereof and a rotational mechanism that rotates and oscillates said group of piezoelectric elements to the left and right in a short-axis direction thereof about the center of said long-axis direction; wherein said rotational mechanism is provided with a first bevel gear having teeth in at least an arc shape, a second bevel gear meshing with said first bevel gear and rotating in the horizontal direction, and a drive motor that rotates said second bevel gear; and also at least one of said first bevel gear and said second bevel gear is made of a synthetic resin.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: June 28, 2011
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventor: Yasunobu Hasegawa
  • 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: 7956516
    Abstract: An ultrasonic sensor includes a cylindrical casing having a bottom portion. The casing has a piezoelectric element on a bottom surface thereof. A substrate is attached to an end surface of an opening portion of the casing with a damping member provided therebetween such that the damping member covers the opening portion. Pin terminals are arranged so as to extend through the substrate and the damping member and are electrically connected to the piezoelectric element with lead wires. An inner space of the casing is filled with foamable resin.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: June 7, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Seigo Hayashi, Masanaga Nishikawa
  • Patent number: 7955266
    Abstract: Ultrasonic contact transducer with multiple ultrasonic emitting elements and means of bringing these elements into contact. This transducer is applicable particularly to non-destructive testing and comprises means (8, 10) for bringing elements (2) into contact with an object (6) to be checked and means (26, 28, and 34 to 40) of determining the positions of elements relative to the object, using means bringing elements into contact, to determine delay laws to be applied to excitation pulses of the elements, to generate a focussed ultrasonic beam (F).
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: June 7, 2011
    Assignees: Commissariat a l'Energie Atomique, Institut de Radioprotection et de Surete Nucleaire
    Inventors: Olivier Casula, Gérard Cattiaux
  • Publication number: 20110127885
    Abstract: An improved process of substrate cleaving and a device to perform the cleaving are disclosed. In the traditional cleaving process, a layer of microbubbles is created within a substrate through the implantation of ions of a gaseous species, such as hydrogen or helium. The size and spatial distribution of these microbubbles is enhanced through the use of ultrasound energy. The ultrasound energy causes smaller microbubbles to join together and also reduces the straggle. An ultrasonic transducer is acoustically linked with the substrate to facilitate these effects. In some embodiments, the ultrasonic transducer is in communication with the platen, such that ultrasound energy can be applied during ion implantation and/or immediately thereafter. In other embodiments, the ultrasonic energy is applied to the substrate during a subsequent process, such as an anneal.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 2, 2011
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventor: Deepak A. RAMAPPA
  • Patent number: 7952260
    Abstract: An ultrasound imaging system (100). An exemplary system (100) includes a plurality of transducer elements (136) formed in subarrays (140) and a plurality of subarray circuit units (160?), with each circuit unit (160?) connected to a subarray (140) of the transducer elements (136). The circuitry in each unit (160?) comprises a plurality of integrated circuits (330, 340, 350), with at least a first (340) of the integrated circuits formed over a second (330) of the integrated circuits in a stacked configuration. In an example illustration the first integrated circuit (340) includes a first plurality of first bond pads (345) along a surface (342) thereof and the second integrated circuit (330) includes a second plurality of second bond pads (335) along a surface (331) thereof, with bond wires (344) extending between pairs of first and second bond pads to provide input/output signal connections therebetween.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: May 31, 2011
    Assignee: General Electric Company
    Inventors: Bruno Hans Haider, Kjell Kristoffersen, Rayette Ann Fisher, Thomas Halvorsrod, Robert Gideon Wodnicki
  • Patent number: 7952256
    Abstract: An ultrasonic transducer according to the present invention includes: two or more ultrasonic transducer cells, each of which has a lower electrode, a first insulating layer placed on the lower electrode, a cavity placed on the first insulating layer, a second insulating layer placed on the cavity, and an upper electrode placed above the second insulating layer; channels which communicate the cavities with each other; the second insulating layer placed on the channels; holes formed in the second insulating layer placed on the channels; and sealing portions which seal the holes, where that part of the sealing portions which enters the channels is the same in cross-sectional shape as the holes.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: May 31, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Kazuya Matsumoto, Ryo Ohta, Mamoru Hasegawa, Hideo Adachi, Katsuhiro Wakabayashi
  • Publication number: 20110121687
    Abstract: A flexible printed circuit board, interposed between an intermediate member and a backing material, covers an almost whole back face of the intermediate member and has first and second wiring patterns. A first electrode is interposed between the piezoelectric transducer and the intermediate member, extracted onto the side face of the intermediate member contiguous with one side face of the piezoelectric transducer, and electrically connected to the first wiring pattern. A second electrode is formed on the ultrasound transmission face of the piezoelectric transducer, extracted by being routed on the other side face of the piezoelectric transducer and a side face of the intermediate member contiguous with the other side face of the piezoelectric transducer, and electrically connected to the second wiring pattern.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 26, 2011
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Minoru AOKI
  • Patent number: 7948148
    Abstract: A miniature piezoelectric transducer element is provided, comprising; (a) a cell element having a cavity; (b) a flexible piezoelectric layer attached to the cell member, the piezoelectric layer having an external surface and an internal surface, the piezoelectric layer featuring such dimensions so as to enable fluctuations thereof at its resonance frequency upon impinging of an external acoustic wave; and (c) a first electrode attached to the external surface and a second electrode attached to the internal surface of the piezoelectric layer. At least one of the electrodes may be specifically shaped so as to provide a maximal electrical output, wherein the electrical output may be current, voltage or power. A preferred shape of the electrodes includes two cores interconnected by a connecting member. The transducer element may function as a transmitter.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: May 24, 2011
    Assignee: Remon Medical Technologies Ltd.
    Inventors: Yariv Porat, Yoseph Tsaliah, Eyal Doron
  • Publication number: 20110115337
    Abstract: An ultrasonic transducer includes: a support member having an opening section; a diaphragm adapted to cover the opening section; and a piezoelectric member provided to the diaphragm and at least one of expanding and contracting in an in-plane direction in response to application of a voltage, wherein the diaphragm has a concave groove section formed to have a concave shape on a surface on an opposite side to one side exposed to the opening section, and the piezoelectric member is fixed to the diaphragm in an area outside the concave groove section, and disposed to cover the concave groove section so as to be opposed to a bottom of the concave groove section via a space.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 19, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomoaki NAKAMURA, Tsutomu NISHIWAKI
  • Publication number: 20110115338
    Abstract: Methods for fabricating robust films across a patterned underlying layer's edges or steps are disclosed. The novel methods diminish the negative effects of electrode steps or edges on the integrity of a membrane. Thus, the methods are particularly applicable to membrane release technology. The height of the step or edge is eliminated or reduced to increase the mechanical integrity of the film.
    Type: Application
    Filed: January 25, 2011
    Publication date: May 19, 2011
    Applicant: AGERE SYSTEMS INC.
    Inventors: Bradley Paul Barber, Linus Albert Fetter, Harold Alexis Huggins, Ronald Eugene Miller
  • Patent number: 7941908
    Abstract: A plurality of application specific integrated circuit (ASIC) chips with different functions is provided. Each of the ASICs performs one or more functions along an ultrasound data path. The chips include communications protocols or processes for allowing scaling. For example, ASICs for backend processing include data exchange ports for communicating between other ASICs of the same type. As another example, receive beamformer ASICs cascade for beamformation. By providing ASICs implementing many or most of the ultrasound data path functions, with scalability, the same ASICs may be used for different system designs. A family of systems from high end to low-end using the same types of ASICs, but in different configurations, is provided.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 17, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Robert N. Phelps, David A. Petersen, John C. Lazenby
  • Publication number: 20110109199
    Abstract: Disclosed is an electromechanical transducer and the method for manufacturing the same, which can detect or control deformation and vibration of a structure and flow of fluids by applying controlling forces. The electromechanical transducer of the present invention comprises a base substrate to which initial stress is applied; an electro-active material layer attached on the base substrate; and electrodes installed on the top and bottom side of the electro-active material layer for actuating the electro-active material layer, the base substrate and the electro-active material layer which is deformed when initial stress is removed from the base substrate so that the base substrate and the electro-active material layer have curvatures.
    Type: Application
    Filed: April 27, 2009
    Publication date: May 12, 2011
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jae Hung Han, Lae Hyong Kang, Jong Won Lee, Sang Joon Chung
  • Publication number: 20110092861
    Abstract: An electroacoustic transducer is provided, particularly for use in an apparatus for medical shock-wave treatment. The transducer includes several piezoelements arranged next to one another, which are embedded in a composite mass in a carrier-free manner.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 21, 2011
    Applicant: RICHARD WOLF GMBH
    Inventor: Edgar BAUER
  • Patent number: 7919906
    Abstract: An ultrasound probe particularly for diagnostic purposes includes a first array of ultrasound transducers that generate ultrasound waves by electric excitation and transforming ultrasound waves impinging on them into electric signals. Each transducer is provided with contact electrodes which are connected respectively to a ground potential and to electric signals feeding lines. The first array of transducers includes emitting transducers and is intended only for generating and transmitting ultrasound waves, while a second array of transducers is provided over the first array of emitting transducer and includes receiving transducers for generating the electric receipt signals. The second array of transducers is formed of a material having piezoelectric behavior.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: April 5, 2011
    Assignee: Esaote, S.p.A.
    Inventor: Marino Cerofolini
  • Patent number: 7908721
    Abstract: An improved ultrasound transducer assembly, e.g. a thickness-mode transducer assembly includes a plurality of elements comprising piezoelectric material, and a backing material disposed adjacent to a back surface of the plurality of elements. The piezoelectric material and backing material define at least a portion of a side surface, wherein an electrically conductive material is disposed upon and in contact with at least a portion of the side surface. The elements may comprise one or a plurality of front electrodes, and one or a plurality of back electrodes, wherein the front electrode(s) is electrically interconnected to the electrically conductive material disposed on the side surface portion. In a mass processing method, a plurality of thickness-mode ultrasound probe transducer assemblies may be produced, wherein a plurality of interconnected transducer subassemblies comprising a mass backing are processed in tandem.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: March 22, 2011
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Michael Joseph Zipparo, Monica Page Johnson, Clyde Gerald Oakley, Dennis Raymond Dietz, Michael Robert LaBree, Mark Nathaniel Donhowe
  • Publication number: 20110062824
    Abstract: An ultrasonic probe having an ultrasonic transducer is provided. The ultrasonic transducer includes a first piezoelectric layer for transmitting ultrasonic waves to an object in a body. A second piezoelectric layer receives the ultrasonic waves reflected by the object. An acoustic matching layer is disposed between the first and second piezoelectric layers, for constituting an electrode common to the first and second piezoelectric layers. Preferably, the second piezoelectric layer is positioned nearer to the object than the first piezoelectric layer. The first piezoelectric layer is inorganic, and the second piezoelectric layer is organic. The acoustic matching layer contains metal, for example, silver. In one embodiment, the second piezoelectric layer includes plural receiving element regions, arranged in a first direction, and having volumes different from one another.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 17, 2011
    Applicant: FUJIFILM Corporation
    Inventor: Takatsugu Wada
  • Patent number: 7905007
    Abstract: An acoustical stack for an ultrasound probe comprises a piezoelectric layer having top and bottom sides and a plurality of matching layer sections forming a matching layer structure. Each of the matching layer sections comprises a spring layer comprising a first material and a mass layer comprising a second material that is different than the first material. The spring layer within the matching layer section that is positioned closest to the piezoelectric layer is thinner than the spring layer within the other matching layer sections.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: March 15, 2011
    Assignee: General Electric Company
    Inventors: Serge Gerard Calisti, Frederic Lanteri, Lowell Smith, Charles Baumgartner, Jean-Francois Gelly
  • Publication number: 20110057541
    Abstract: A high power ultrasonic transducer includes a first ultrasonic transducer cell and at least one second ultrasonic transducer cell disposed on the first ultrasonic transducer cell. The at least one second ultrasonic transducer cell oscillates together with the first ultrasonic transducer cell.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 10, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-il Cho, Jong-keun Song, Dong-wook Kim
  • Publication number: 20110057545
    Abstract: In one aspect, matching layers for an ultrasonic transducer stack having a matching layer comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In another aspect, the matrix material is loaded with a plurality of heavy and light particles. In another aspect, an ultrasound transducer stack comprises a piezoelectric layer and at least one matching layer. In one aspect, the matching layer comprises a composite material comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In a further aspect, the composite material can also comprise a matrix material loaded with a plurality of heavy and light particles. In a further aspect, a matching layer can also comprise cyanoacrylate.
    Type: Application
    Filed: July 6, 2010
    Publication date: March 10, 2011
    Applicant: VisualSonics Inc.
    Inventors: N. Chris Chaggares, James Mehi, Desmond Hirson
  • Patent number: 7902722
    Abstract: A dual spiral transducer and method of manufacture of same is disclosed. In one aspect, the transducer comprises a central rod, a first spiral piezoelectric electrode wrapped around a circumference of the rod, the electrode being advanced around the rod at a determined angle determined based on a length of a single complete turn around the rod and a diameter of the rod and a second spiral piezoelectric electrode wrapped around the circumference of the rod, the second spiral electrode being electrically isolated, and offset, from the first spiral electrode by a known distance. A second set of spiral electrodes can be integrated into the structure so that both transmission and reception of signals is feasible.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 8, 2011
    Assignee: DVX, LLC
    Inventor: David Vilkomerson
  • Patent number: 7902728
    Abstract: A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent to the piezoelectric element. The HTC material can be thermally coupled to one or more heat sinks. Use of HTC material in conjunction with these piezoelectric element surfaces is managed to avoid degradation of propagating acoustic energy. Use of the HTC material in conjunction with heat sinks allows for creation of thermal paths away from the piezoelectric element. Active cooling of the heat sinks with water or air can further draw heat from the piezoelectric element. Further implementations form a composite matrix of thermally conductive material or interleave thermally conductive layers with piezoelectric material.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: March 8, 2011
    Assignee: UST, Inc.
    Inventors: Perry Kaminski, Yu-Chi Chu
  • Patent number: 7900337
    Abstract: A composite membrane acoustic transducer structure comprising a magnet assembly is arranged adjacent the composite membrane material. The magnet assembly is arranged to produce a flux field. A first layer of thin, elongate composite membrane material is held under tension. A second conductive layer is attached to the first layer of composite membrane material wherein the first and second layers of membrane material are arranged adjacent, generally parallel and offset from the magnet assembly. The assembly is arranged to produce the flux field through at least part of the first layer and the second layer.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: March 8, 2011
    Assignee: Shure Incorporated
    Inventor: Robert J. Crowley
  • Patent number: 7900338
    Abstract: Making a transducer having a plastic matching layer which includes providing a transducer housing having a proximal end and a distal end, and bonding a plastic to the distal end of the transducer housing (the plastic fluidly sealing and occluding the distal end). The bonding further includes inserting a cylinder comprising a mold-release chemical into the transducer housing, bonding plastic onto the distal end of the transducer housing, and removing the cylinder when the plastic has hardened.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 8, 2011
    Assignee: Daniel Measurement and Control, Inc.
    Inventors: Henry Charles Straub, Jr., Randeep Singh Grewal, Charles Robert Allen
  • Publication number: 20110050039
    Abstract: An impedance conversion layer useful for medical imaging ultrasonic transducers comprises a low impedance polymer layer and a high impedance metal layer. These layers are combined with corresponding thicknesses adapted to provide a function of converting from a specific high impedance to specific low impedance, wherein the polymer layer is at the high impedance side and the metal layer is at the low impedance side. The effective acoustic impedance of the polymer and metal layer combination may be adapted to configure an impedance converter in the same way as a quarter wavelength impedance converter, converting from low impedance to high impedance (metal to polymer) or from a high impedance to low impedance (polymer to metal). This structure may be used for front matching with the propagation medium and back matching with an absorber for ultrasonic transducers.
    Type: Application
    Filed: July 14, 2010
    Publication date: March 3, 2011
    Applicant: MEASUREMENT SPECIALTIES
    Inventors: Minoru Toda, Mitchell L. Thompson
  • Patent number: 7898154
    Abstract: In an ultrasound probe including first and second acoustic matching layers between an acoustic lens and a piezoelectric oscillator, an electrode is arranged on a surface of a laminate element made of the first and second acoustic matching layers, the laminate element is interposed between the acoustic lens and the piezoelectric oscillator, and the piezoelectric oscillator and the electrode are electrically connected.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: March 1, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Takashi Takeuchi, Takashi Ogawa, Koichi Shibamoto
  • Patent number: 7888847
    Abstract: An improved acoustic lens and an improved ultrasonic transducer system comprising an improved acoustic lens and related methods are provided. The improved acoustic lens may have a uniform loss along an elevation axis or may have a loss along the elevation axis that provides for an apodization of an acoustic signal. The improved acoustic lens may be a multi-component lens. In a two-component lens embodiment, the inner lens component, for interfacing with a transducer, may have a concave outer surface and the outer lens component may have a flat or convex outer surface. In a three-component lens embodiment, the inner lens component, for interfacing with a transducer, may have a concave outer surface, the middle lens component may have a concave outer surface and the outer lens component may have a flat or convex outer surface.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: February 15, 2011
    Inventors: Dennis Raymond Dietz, Clyde Gerald Oakley, Duane Morgan, Daidipya Patwa
  • Publication number: 20110025172
    Abstract: An ultrasound transducer that includes a backing layer, an insulating layer disposed on top of the backing layer, and a plurality of conductive traces disposed on top of the insulating layer are disclosed. Each of the conductive traces has an upper face. A plurality of transducer elements, each having (a) a core of piezoelectric material and (b) a conductive coating disposed beneath the core, are bonded directly to the upper face of a respective one of the plurality of conductive traces. Methods for fabricating ultrasound transducers are also disclosed.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Inventors: Edward P. Harhen, Mitchell Thompson
  • 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: 20110018395
    Abstract: A transducer with a closed heat pipe is provided with a hot surface and a cold surface. The hot surface is in contact with the transducer interior and the cold surface is in contact with a cooler contact area. A fluid is used in the pipe which boils at the temperature of the hot surface and condenses at the temperature of the cold surface. A wick inside the heat pipe facilities the return by capillary action of the condensed fluid to the hot end. The heat pipe can be evacuated to adjust the boiling temperature of the fluid. A variant involves drilling additional holes into ceramic rings and inserting heat pipes. Increasing the heat pipe length into the tail mass and the piston increases the cool region for the fluid to condense; thereby improving the performance of the transducer.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Inventor: Anthony A. Ruffa
  • Publication number: 20110021916
    Abstract: Provided is an organic piezoelectric material which has excellent piezoelectric property, heat resistance property in particular. An ultrasonic oscillator, which is to be used for an ultrasonic medical diagnostic imaging device which can receive high frequencies at high sensitivity and is suitable for harmonic imaging techniques, a method for manufacturing such oscillator, and an ultrasonic probe are also provided. The ultrasonic medical diagnostic imaging device is provided by sing such oscillator, method and probe. The organic piezoelectric material is characterized by containing empty particles having an average particle diameter of 10 ?m or less.
    Type: Application
    Filed: March 4, 2009
    Publication date: January 27, 2011
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventor: Kiyokazu Morita
  • Patent number: 7876027
    Abstract: A transducer for transmitting and receiving ultrasound waves and a method for constructing a transducer. The transducer having layers of a single crystal piezoelectric material stacked in a multilayer arrangement and a polymer material geometrically arranged within each layer to form a 3-1 connectivity piezoelectric and polymer composite. The multilayer arrangement includes at least two layers of different thickness. The structure allows the generation of odd and even harmonics to significantly increase bandwith without reducing signal amplitude or efficiency.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 25, 2011
    Assignee: The University of Paisley
    Inventors: Alexander Cochran, Katherine J. Kirk, Pablo Martin Franch, Aneela Abrar
  • Publication number: 20110012478
    Abstract: A thin-film device and a method of fabricating the thin-film device are provided herein. The thin-film device comprises a bond layer, a film layer that has bulk material properties, and a substrate that has a heat-sensitive component disposed thereon. The method of fabricating the thin-film device comprises the step of providing an active material that has bulk material properties. The active material is bonded to the substrate through the bond layer. After bonding the active material to the substrate, the active material that is bonded to the substrate is thinned to produce the film layer of the thin-film device. The substrate is provided with the heat-sensitive component disposed thereon prior to bonding the active material to the substrate.
    Type: Application
    Filed: June 21, 2010
    Publication date: January 20, 2011
    Inventors: Khalil Najafi, Ethem Erkan Aktakka, Hanseup Kim
  • Patent number: 7872400
    Abstract: The present invention refers to an ultrasonic device comprising an ultrasound transducer; and a disk-shaped metallic low-frequency ultrasound (NFLUS) resonator being mechanically connected with the ultrasound transducer on one side of the resonator; a container with an opening on its bottom side and being arranged on the other side of the disk-shaped resonator such that the opening is facing the disk-shaped resonator; an elastic sealing element arranged between the disk-shaped resonator and the container for sealing the container around the opening; and means for supplying a pressing force such that the container is tightened on the resonator during ultrasonication, but can be repeatedly disassembled and assembled after ultrasonication.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: January 18, 2011
    Assignee: Dr. Hielscher GmbH
    Inventors: Holger Hielscher, Thomas Hielscher, Harald Hielscher
  • Patent number: 7872399
    Abstract: A variance in transmitting/receiving sensitivity between multiple vibrational elements or transducers included in an ultrasonic probe is corrected. An ultrasonic probe in accordance with the present invention has multiple transducers, each of which includes multiple vibrational elements that each transmit or receive ultrasonic waves by converting ultrasonic waves and an electric signal into each other with a bias voltage applied thereto, set in array. The ultrasonic prove includes a transmitting/receiving sensitivity correction means that independently adjusts the bias voltage to be applied to at least two vibrational elements among the multiple vibrational elements so as to correct a variance in transmitting/receiving sensitivity between the at least two vibrational elements.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: January 18, 2011
    Assignee: Hitachi Medical Corporation
    Inventors: Masanao Kondou, Katsunori Asafusa
  • Publication number: 20110004102
    Abstract: Disclosed is an organic piezoelectric material which has particularly excellent heat resistance, while exhibiting excellent transparency, surface gloss, adhesion and piezoelectric characteristics. Also disclosed are an ultrasonic oscillator used in an ultrasonic medical diagnostic imaging device, which is capable of highly sensitively receiving a high frequency wave and suitable for harmonic imaging technique, a method for producing the ultrasonic oscillator, an ultrasonic probe, and an ultrasonic medical diagnostic imaging device. The organic piezoelectric material is characterized in that the piezoelectric material is formed by laminating two or more films at the same time by a coating process.
    Type: Application
    Filed: March 4, 2009
    Publication date: January 6, 2011
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventor: Kiyokazu Morita
  • Patent number: 7859170
    Abstract: A third matching layer (140) affording wide bandwidth for an ultrasound matrix probe is made of polyethylene, and may extend downwardly to surround the array (S360) and attach to the housing to seal the array (S370).
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: December 28, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Heather Knowles, Jacquelyn Byron
  • Patent number: 7860259
    Abstract: A piezoelectric acoustic element 1 of the present invention comprising a hollow casing 5 having a opening 3, a piezoelectric element 7 that is disposed in said casing 5 and bends when a voltage is applied thereto, and diaphragm 8 provided at the opening 3 of said casing 5; wherein said piezoelectric element 7 and said diaphragm 8 are joined through a vibration transmitting member 9.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: December 28, 2010
    Assignee: NEC Corporation
    Inventors: Yasuharu Onishi, Yasuhiro Sasaki, Nozomi Toki
  • Patent number: 7851977
    Abstract: A component working with guided bulk acoustic waves includes a first substrate, a second substrate, and a layer system between the first and second substrates. The layer system includes a metal layer and a dielectric layer. A ratio of the acoustic impedance of the metal layer to the acoustic impedance of the dielectric layer is greater than or equal to 4.5.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: December 14, 2010
    Assignee: EPCOS AG
    Inventors: Werner Ruile, Ulrike Roesler
  • Patent number: 7834520
    Abstract: An ultrasonic probe suitable for reducing reflected waves returning from a rear surface part to a transducer side, and an ultrasonic diagnostic apparatus. Ultrasonic probe 1 comprises transducer 10 transmitting and receiving ultrasonic waves to and from a subject, a backing material 12 disposed on the rear side of the transducer 10, and heat dissipating block 14 stacked on the backside of the backing material 12. At least one of the backing material 12 and heat-dissipating block 14 comprises void 16 therein. A sound absorbing material 18 is desirably filled in void 16.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: November 16, 2010
    Assignee: Hitachi Medical Coporation
    Inventor: Zhiqiang Hu
  • Patent number: 7834521
    Abstract: An multi-channel array type ultrasound probe (search unit) disposed at least one-dimensionally, having: a plurality of sheet-shaped piezoelectric elements as transmission reception separation type complex piezoelectric element, wherein a material configuring a transmission piezoelectric element of the complex type piezoelectric element has an elastic coefficient of 10 Gpa to 100 Gpa at 23° C., and a material configuring a reception piezoelectric element of the complex type piezoelectric element has an elastic coefficient of 10 Gpa to 1 Gpa at 23° C.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: November 16, 2010
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takeshi Habu, Takayuki Sasaki, Toshihisa Takeyama