DE3851930D1 - Fokussierender Ultraschallwandler. - Google Patents

Fokussierender Ultraschallwandler.

Info

Publication number
DE3851930D1
DE3851930D1 DE3851930T DE3851930T DE3851930D1 DE 3851930 D1 DE3851930 D1 DE 3851930D1 DE 3851930 T DE3851930 T DE 3851930T DE 3851930 T DE3851930 T DE 3851930T DE 3851930 D1 DE3851930 D1 DE 3851930D1
Authority
DE
Germany
Prior art keywords
ultrasound transducer
focusing ultrasound
focusing
transducer
ultrasound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE3851930T
Other languages
English (en)
Inventor
Helmut Dipl Ing Wurster
Werner Dipl Ing Krauss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Richard Wolf GmbH
Original Assignee
Richard Wolf GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard Wolf GmbH filed Critical Richard Wolf GmbH
Priority to DE3851930T priority Critical patent/DE3851930D1/de
Application granted granted Critical
Publication of DE3851930D1 publication Critical patent/DE3851930D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0625Annular array
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18Methods or devices for transmitting, conducting or directing sound
    • G10K11/26Sound-focusing or directing, e.g. scanning
    • G10K11/32Sound-focusing or directing, e.g. scanning characterised by the shape of the source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
DE3851930T 1987-09-24 1988-08-13 Fokussierender Ultraschallwandler. Expired - Fee Related DE3851930D1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3851930T DE3851930D1 (de) 1987-09-24 1988-08-13 Fokussierender Ultraschallwandler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873732131 DE3732131A1 (de) 1987-09-24 1987-09-24 Fokussierender ultraschallwandler
DE3851930T DE3851930D1 (de) 1987-09-24 1988-08-13 Fokussierender Ultraschallwandler.

Publications (1)

Publication Number Publication Date
DE3851930D1 true DE3851930D1 (de) 1994-12-01

Family

ID=6336744

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19873732131 Withdrawn DE3732131A1 (de) 1987-09-24 1987-09-24 Fokussierender ultraschallwandler
DE3851930T Expired - Fee Related DE3851930D1 (de) 1987-09-24 1988-08-13 Fokussierender Ultraschallwandler.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19873732131 Withdrawn DE3732131A1 (de) 1987-09-24 1987-09-24 Fokussierender ultraschallwandler

Country Status (3)

Country Link
US (1) US4888746A (de)
EP (1) EP0308644B1 (de)
DE (2) DE3732131A1 (de)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01195844A (ja) * 1988-01-29 1989-08-07 Yokogawa Medical Syst Ltd 超音波受波整相回路
JPH02215452A (ja) * 1989-02-17 1990-08-28 Toshiba Corp 結石破砕装置
DE8912723U1 (de) * 1989-10-27 1989-12-28 Dornier Medizintechnik Gmbh, 8000 Muenchen, De
DE3940808A1 (de) * 1989-12-09 1991-06-20 Dornier Medizintechnik Wandlerelement fuer die beruehrungsfreie lithotripsie
JPH03280939A (ja) * 1990-03-29 1991-12-11 Fujitsu Ltd 超音波探触子
DE4011017C1 (de) * 1990-04-05 1991-10-02 Dornier Medizintechnik Gmbh, 8000 Muenchen, De
DE4102551A1 (de) * 1991-01-29 1992-07-02 Wolf Gmbh Richard Verfahren zum bestimmen der akustischen leistung fokussierender elektroakustischer wandler und vorrichtung zur durchfuehrung des verfahrens
US5316000A (en) * 1991-03-05 1994-05-31 Technomed International (Societe Anonyme) Use of at least one composite piezoelectric transducer in the manufacture of an ultrasonic therapy apparatus for applying therapy, in a body zone, in particular to concretions, to tissue, or to bones, of a living being and method of ultrasonic therapy
GB9408668D0 (en) * 1994-04-30 1994-06-22 Orthosonics Ltd Untrasonic therapeutic system
US5582578A (en) * 1995-08-01 1996-12-10 Duke University Method for the comminution of concretions
US5800365A (en) * 1995-12-14 1998-09-01 Duke University Microsecond tandem-pulse electrohydraulic shock wave generator with confocal reflectors
US6128958A (en) * 1997-09-11 2000-10-10 The Regents Of The University Of Michigan Phased array system architecture
US6237419B1 (en) * 1999-08-16 2001-05-29 General Electric Company Aspherical curved element transducer to inspect a part with curved entry surface
EP1227763A4 (de) * 1999-10-18 2005-06-15 Focus Surgery Inc Teilstrahlwandler
US6419648B1 (en) 2000-04-21 2002-07-16 Insightec-Txsonics Ltd. Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system
US6613004B1 (en) * 2000-04-21 2003-09-02 Insightec-Txsonics, Ltd. Systems and methods for creating longer necrosed volumes using a phased array focused ultrasound system
US6821274B2 (en) 2001-03-07 2004-11-23 Gendel Ltd. Ultrasound therapy for selective cell ablation
EP1353723A2 (de) 2000-11-17 2003-10-22 Gendel Limited Entfernung von zellen mit combiniertem elektrischem feld und ultraschall therapie
US6618620B1 (en) 2000-11-28 2003-09-09 Txsonics Ltd. Apparatus for controlling thermal dosing in an thermal treatment system
US6626854B2 (en) 2000-12-27 2003-09-30 Insightec - Txsonics Ltd. Systems and methods for ultrasound assisted lipolysis
US6645162B2 (en) 2000-12-27 2003-11-11 Insightec - Txsonics Ltd. Systems and methods for ultrasound assisted lipolysis
EP1360685B1 (de) * 2001-02-09 2005-10-26 Koninklijke Philips Electronics N.V. Ultraschallwandler und verfahren zur herstellung eines ultraschallwandlers
US20050043726A1 (en) * 2001-03-07 2005-02-24 Mchale Anthony Patrick Device II
EP1450697A4 (de) 2001-11-09 2009-09-09 Univ Duke Verfahren und gerät zur verringerung von gewebeverletzungen bei der schockwellen-lithotripsie
US7894877B2 (en) * 2002-05-17 2011-02-22 Case Western Reserve University System and method for adjusting image parameters based on device tracking
US8088067B2 (en) 2002-12-23 2012-01-03 Insightec Ltd. Tissue aberration corrections in ultrasound therapy
US7635332B2 (en) * 2003-02-14 2009-12-22 Siemens Medical Solutions Usa, Inc. System and method of operating microfabricated ultrasonic transducers for harmonic imaging
US7087023B2 (en) * 2003-02-14 2006-08-08 Sensant Corporation Microfabricated ultrasonic transducers with bias polarity beam profile control and method of operating the same
US7618373B2 (en) * 2003-02-14 2009-11-17 Siemens Medical Solutions Usa, Inc. Microfabricated ultrasonic transducer array for 3-D imaging and method of operating the same
US7780597B2 (en) * 2003-02-14 2010-08-24 Siemens Medical Solutions Usa, Inc. Method and apparatus for improving the performance of capacitive acoustic transducers using bias polarity control and multiple firings
US7611462B2 (en) 2003-05-22 2009-11-03 Insightec-Image Guided Treatment Ltd. Acoustic beam forming in phased arrays including large numbers of transducer elements
US7850613B2 (en) * 2003-05-30 2010-12-14 Orison Corporation Apparatus and method for three dimensional ultrasound breast imaging
US20050038361A1 (en) * 2003-08-14 2005-02-17 Duke University Apparatus for improved shock-wave lithotripsy (SWL) using a piezoelectric annular array (PEAA) shock-wave generator in combination with a primary shock wave source
EP1701659A4 (de) * 2003-08-14 2010-04-07 Univ Duke Gerät für die verbesserte schockwellen-lithotripsie (swl) mit einem piezoelektrischen ringförmigen (peaa) stosswellengenerator in kombination mit einer primären stosswelle
US8409099B2 (en) 2004-08-26 2013-04-02 Insightec Ltd. Focused ultrasound system for surrounding a body tissue mass and treatment method
US20080045865A1 (en) * 2004-11-12 2008-02-21 Hanoch Kislev Nanoparticle Mediated Ultrasound Therapy and Diagnostic Imaging
US20070016039A1 (en) 2005-06-21 2007-01-18 Insightec-Image Guided Treatment Ltd. Controlled, non-linear focused ultrasound treatment
US10219815B2 (en) 2005-09-22 2019-03-05 The Regents Of The University Of Michigan Histotripsy for thrombolysis
US8057408B2 (en) 2005-09-22 2011-11-15 The Regents Of The University Of Michigan Pulsed cavitational ultrasound therapy
CN101313354B (zh) 2005-11-23 2012-02-15 因赛泰克有限公司 超高密度超声阵列中的分级切换
US8235901B2 (en) 2006-04-26 2012-08-07 Insightec, Ltd. Focused ultrasound system with far field tail suppression
US7942809B2 (en) * 2006-05-26 2011-05-17 Leban Stanley G Flexible ultrasonic wire in an endoscope delivery system
FR2903315B1 (fr) * 2006-07-05 2016-03-11 Edap S A Procede et appareil de therapie a emetteurs ultrasonores actives sequentiellement
FR2903316B1 (fr) * 2006-07-05 2009-06-26 Edap S A Sonde de therapie et appareil de therapie incluant une telle sonde
US7955281B2 (en) * 2006-09-07 2011-06-07 Nivasonix, Llc External ultrasound lipoplasty
US8262591B2 (en) * 2006-09-07 2012-09-11 Nivasonix, Llc External ultrasound lipoplasty
US20100137754A1 (en) * 2007-01-10 2010-06-03 Yufeng Zhou Shock wave lithotripter system and a method of performing shock wave calculus fragmentation using the same
WO2009020617A1 (en) 2007-08-06 2009-02-12 Orison Corporation System and method for three-dimensional ultrasound imaging
US8251908B2 (en) 2007-10-01 2012-08-28 Insightec Ltd. Motion compensated image-guided focused ultrasound therapy system
US8425424B2 (en) 2008-11-19 2013-04-23 Inightee Ltd. Closed-loop clot lysis
US8617073B2 (en) 2009-04-17 2013-12-31 Insightec Ltd. Focusing ultrasound into the brain through the skull by utilizing both longitudinal and shear waves
US9623266B2 (en) 2009-08-04 2017-04-18 Insightec Ltd. Estimation of alignment parameters in magnetic-resonance-guided ultrasound focusing
JP5850837B2 (ja) 2009-08-17 2016-02-03 ヒストソニックス,インコーポレーテッド 使い捨て音響結合媒体容器
US9289154B2 (en) 2009-08-19 2016-03-22 Insightec Ltd. Techniques for temperature measurement and corrections in long-term magnetic resonance thermometry
AU2010289775B2 (en) 2009-08-26 2016-02-04 Histosonics, Inc. Devices and methods for using controlled bubble cloud cavitation in fractionating urinary stones
EP2470267B1 (de) 2009-08-26 2015-11-11 The Regents Of The University Of Michigan Mikromanipulator-steuerarm für therapie- und bildgebungs-ultraschallwandler
US9177543B2 (en) 2009-08-26 2015-11-03 Insightec Ltd. Asymmetric ultrasound phased-array transducer for dynamic beam steering to ablate tissues in MRI
US8539813B2 (en) 2009-09-22 2013-09-24 The Regents Of The University Of Michigan Gel phantoms for testing cavitational ultrasound (histotripsy) transducers
WO2011045669A2 (en) 2009-10-14 2011-04-21 Insightec Ltd. Mapping ultrasound transducers
US8368401B2 (en) 2009-11-10 2013-02-05 Insightec Ltd. Techniques for correcting measurement artifacts in magnetic resonance thermometry
US8932237B2 (en) 2010-04-28 2015-01-13 Insightec, Ltd. Efficient ultrasound focusing
US9852727B2 (en) 2010-04-28 2017-12-26 Insightec, Ltd. Multi-segment ultrasound transducers
US10231712B2 (en) * 2010-06-09 2019-03-19 Regents Of The University Of Minnesota Dual mode ultrasound transducer (DMUT) system and method for controlling delivery of ultrasound therapy
US9981148B2 (en) 2010-10-22 2018-05-29 Insightec, Ltd. Adaptive active cooling during focused ultrasound treatment
CN102579127B (zh) * 2011-01-14 2014-09-03 深圳市普罗惠仁医学科技有限公司 超声聚焦换能器
FR2973550B1 (fr) 2011-03-30 2015-12-04 Edap Tms France Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface
US9144694B2 (en) 2011-08-10 2015-09-29 The Regents Of The University Of Michigan Lesion generation through bone using histotripsy therapy without aberration correction
SG11201401833UA (en) 2011-10-28 2014-05-29 Decision Sciences Int Corp Spread spectrum coded waveforms in ultrasound imaging
US9049783B2 (en) 2012-04-13 2015-06-02 Histosonics, Inc. Systems and methods for obtaining large creepage isolation on printed circuit boards
WO2013166019A1 (en) 2012-04-30 2013-11-07 The Regents Of The University Of Michigan Ultrasound transducer manufacturing using rapid-prototyping method
WO2014055906A1 (en) 2012-10-05 2014-04-10 The Regents Of The University Of Michigan Bubble-induced color doppler feedback during histotripsy
WO2015003154A1 (en) 2013-07-03 2015-01-08 Histosonics, Inc. Articulating arm limiter for cavitational ultrasound therapy system
WO2015003142A1 (en) 2013-07-03 2015-01-08 Histosonics, Inc. Histotripsy excitation sequences optimized for bubble cloud formation using shock scattering
WO2015027164A1 (en) 2013-08-22 2015-02-26 The Regents Of The University Of Michigan Histotripsy using very short ultrasound pulses
US9844359B2 (en) 2013-09-13 2017-12-19 Decision Sciences Medical Company, LLC Coherent spread-spectrum coded waveforms in synthetic aperture image formation
US10814147B2 (en) 2014-06-13 2020-10-27 University Of Utah Research Foundation Therapeutic ultrasound breast treatment
US10150893B2 (en) 2014-07-23 2018-12-11 Dow Global Technologies Llc Structural adhesives having improved wash-off resistance and method for dispensing same
US10743838B2 (en) 2015-02-25 2020-08-18 Decision Sciences Medical Company, LLC Acoustic signal transmission couplants and coupling mediums
EP4230262A3 (de) 2015-06-24 2023-11-22 The Regents Of The University Of Michigan System für histotripsietherapie zur behandlung des hirngewebes
WO2017062890A1 (en) 2015-10-08 2017-04-13 Decision Sciences Medical Company, LLC Acoustic orthopedic tracking system and methods
RU2697566C2 (ru) * 2017-12-28 2019-08-15 Общество с ограниченной ответственностью "ГидроМаринн" Электроакустический преобразователь для параметрической генерации ультразвука
AU2019389001A1 (en) 2018-11-28 2021-06-10 Histosonics, Inc. Histotripsy systems and methods
WO2020219705A1 (en) 2019-04-23 2020-10-29 Allan Wegner Semi-rigid acoustic coupling articles for ultrasound diagnostic and treatment applications
EP4096782A4 (de) 2020-01-28 2024-02-14 Univ Michigan Regents Systeme und verfahren zur histotripsie-immunsensibilisierung
CN116685847A (zh) 2020-11-13 2023-09-01 决策科学医疗有限责任公司 用于对象的合成孔径超声成像的系统和方法

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645727A (en) * 1948-03-26 1953-07-14 Bell Telephone Labor Inc Focusing ultrasonic radiator
FR2252580B1 (de) * 1973-11-22 1980-02-22 Realisations Ultrasoniques Sa
FR2292978A1 (fr) * 1974-11-28 1976-06-25 Anvar Perfectionnements aux dispositifs de sondage par ultra-sons
US4183249A (en) * 1975-03-07 1980-01-15 Varian Associates, Inc. Lens system for acoustical imaging
FR2332531A1 (fr) * 1975-11-24 1977-06-17 Commissariat Energie Atomique Camera ultra-sonore
FR2334953A1 (fr) * 1975-12-11 1977-07-08 Labo Electronique Physique Systeme d'analyse par ultrasons et son application a l'echographie
GB1554349A (en) * 1976-11-01 1979-10-17 Stanford Res Inst Int Variable focus ultrasonic transducer means
US4159462A (en) * 1977-08-18 1979-06-26 General Electric Company Ultrasonic multi-sector scanner
FR2410469A1 (fr) * 1977-12-05 1979-06-29 Labo Electronique Physique Systeme electronique a ultrasons pour la determination de directions privilegiees dans des structures biologiques
CA1153097A (en) * 1978-03-03 1983-08-30 Jack Jellins Rotating ultrasonic scanner
US4156863A (en) * 1978-04-28 1979-05-29 The United States Of America As Represented By The Secretary Of The Navy Conical beam transducer array
US4155259A (en) * 1978-05-24 1979-05-22 General Electric Company Ultrasonic imaging system
US4241611A (en) * 1979-03-02 1980-12-30 Smith Kline Instruments, Inc. Ultrasonic diagnostic transducer assembly and system
US4307613A (en) * 1979-06-14 1981-12-29 University Of Connecticut Electronically focused ultrasonic transmitter
US4281550A (en) * 1979-12-17 1981-08-04 North American Philips Corporation Curved array of sequenced ultrasound transducers
JPS56121541A (en) * 1980-02-28 1981-09-24 Tokyo Shibaura Electric Co Ultrasonic imaging apparatus
DE3119295A1 (de) * 1981-05-14 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum zerstoeren von konkrementen in koerperhoehlen
US4622972A (en) * 1981-10-05 1986-11-18 Varian Associates, Inc. Ultrasound hyperthermia applicator with variable coherence by multi-spiral focusing
NL8200478A (nl) * 1982-02-09 1983-09-01 Philips Nv Ultrasone zender.
JPS58157454A (ja) * 1982-03-15 1983-09-19 株式会社東芝 超音波診断装置
DE3377530D1 (en) * 1982-03-20 1988-09-01 Fujitsu Ltd Ultrasonic sector-scan probe
JPS58216294A (ja) * 1982-06-10 1983-12-15 松下電器産業株式会社 音響レンズ
US4534221A (en) * 1982-09-27 1985-08-13 Technicare Corporation Ultrasonic diagnostic imaging systems for varying depths of field
US4471785A (en) * 1982-09-29 1984-09-18 Sri International Ultrasonic imaging system with correction for velocity inhomogeneity and multipath interference using an ultrasonic imaging array
US4537074A (en) * 1983-09-12 1985-08-27 Technicare Corporation Annular array ultrasonic transducers
FR2556582B1 (fr) * 1983-12-14 1986-12-19 Dory Jacques Appareil a impulsions ultrasonores destine a la destruction des calculs
US4582065A (en) * 1984-06-28 1986-04-15 Picker International, Inc. Ultrasonic step scanning utilizing unequally spaced curvilinear transducer array
DE3425992C2 (de) * 1984-07-14 1986-10-09 Richard Wolf Gmbh, 7134 Knittlingen Piezoelektrischer Wandler zur Zerstörung von Konkrementen im Körperinneren
DE3543867C3 (de) * 1985-12-12 1994-10-06 Wolf Gmbh Richard Vorrichtung zur räumlichen Ortung und zur Zerstörung von Konkrementen in Körperhöhlen
EP0229981B1 (de) * 1985-12-20 1990-02-28 Siemens Aktiengesellschaft Verfahren zur Kontrolle der Eigenschaften des Fokus eines Ultraschallfeldes und Vorrichtung zur Durchführung des Verfahrens
US4787394A (en) * 1986-04-24 1988-11-29 Kabushiki Kaisha Toshiba Ultrasound therapy apparatus
FR2614747B1 (fr) * 1987-04-28 1989-07-28 Dory Jacques Generateur d'impulsions elastiques ayant une forme d'onde predeterminee desiree et son application au traitement ou au diagnostic medical
FR2620294B1 (fr) * 1987-09-07 1990-01-19 Technomed Int Sa Dispositif piezoelectrique a ondes negatives reduites, et utilisation de ce dispositif pour la lithotritie extra-corporelle ou pour la destruction de tissus particuliers

Also Published As

Publication number Publication date
DE3732131A1 (de) 1989-04-06
EP0308644B1 (de) 1994-10-26
EP0308644A3 (en) 1990-05-30
US4888746A (en) 1989-12-19
EP0308644A2 (de) 1989-03-29

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8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee