CA3173282C - Apodizing backing structures for ultrasonic transducers and related methods - Google Patents

Apodizing backing structures for ultrasonic transducers and related methods Download PDF

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Publication number
CA3173282C
CA3173282C CA3173282A CA3173282A CA3173282C CA 3173282 C CA3173282 C CA 3173282C CA 3173282 A CA3173282 A CA 3173282A CA 3173282 A CA3173282 A CA 3173282A CA 3173282 C CA3173282 C CA 3173282C
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CA
Canada
Prior art keywords
low
volume fraction
piezoelectric composite
acoustic
composite disc
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.)
Active
Application number
CA3173282A
Other languages
English (en)
French (fr)
Other versions
CA3173282A1 (en
Inventor
Nicholas Chris CHAGGARES
Khachic Chris KARSHAFIAN
Eric RIEDER
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.)
Resonant Acoustics International Inc
Original Assignee
Resonant Acoustics International Inc
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 Resonant Acoustics International Inc filed Critical Resonant Acoustics International Inc
Publication of CA3173282A1 publication Critical patent/CA3173282A1/en
Application granted granted Critical
Publication of CA3173282C publication Critical patent/CA3173282C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods 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 a single piezoelectric element
    • B06B1/0651—Methods 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 a single piezoelectric element of circular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods 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 a single piezoelectric element
    • B06B1/0662—Methods 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 a single piezoelectric element with an electrode on the sensitive surface
    • B06B1/0677—Methods 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 a single piezoelectric element with an electrode on the sensitive surface and a high impedance backing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0043—Ultrasound therapy intra-cavitary
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0086—Beam steering
    • A61N2007/0095—Beam steering by modifying an excitation signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/70—Specific application
    • B06B2201/76—Medical, dental

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Surgical Instruments (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
CA3173282A 2021-03-15 2022-03-15 Apodizing backing structures for ultrasonic transducers and related methods Active CA3173282C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202163200559P 2021-03-15 2021-03-15
US63/200,559 2021-03-15
PCT/CA2022/050387 WO2022193005A1 (en) 2021-03-15 2022-03-15 Apodizing backing structures for ultrasonic transducers and related methods

Publications (2)

Publication Number Publication Date
CA3173282A1 CA3173282A1 (en) 2022-09-22
CA3173282C true CA3173282C (en) 2023-10-03

Family

ID=83322158

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3173282A Active CA3173282C (en) 2021-03-15 2022-03-15 Apodizing backing structures for ultrasonic transducers and related methods

Country Status (6)

Country Link
US (1) US20240181278A1 (enExample)
EP (1) EP4308310A4 (enExample)
JP (1) JP2024515453A (enExample)
AU (1) AU2022236301A1 (enExample)
CA (1) CA3173282C (enExample)
WO (1) WO2022193005A1 (enExample)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681626A (en) 1971-11-11 1972-08-01 Branson Instr Oscillatory circuit for ultrasonic cleaning apparatus
AU572464B2 (en) * 1982-07-21 1988-05-12 Technicare Corp. Selectable focus ultrasonic transducer
JPS62231594A (ja) * 1986-03-31 1987-10-12 Ngk Spark Plug Co Ltd 圧電送受波器
GB8728509D0 (en) * 1987-12-05 1988-01-13 Rolls Royce Plc Acoustic emission transducer
US6443900B2 (en) * 2000-03-15 2002-09-03 Olympus Optical Co., Ltd. Ultrasonic wave transducer system and ultrasonic wave transducer
US20040054287A1 (en) * 2002-08-29 2004-03-18 Stephens Douglas Neil Ultrasonic imaging devices and methods of fabrication
JP4805254B2 (ja) * 2004-04-20 2011-11-02 ビジュアルソニックス インコーポレイテッド 配列された超音波トランスデューサ
WO2006009220A1 (ja) * 2004-07-22 2006-01-26 Olympus Corporation 超音波振動子
US20110178407A1 (en) 2010-01-20 2011-07-21 Siemens Medical Solutions Usa, Inc. Hard and Soft Backing for Medical Ultrasound Transducer Array
CA2895821A1 (en) * 2012-12-21 2014-06-26 Volcano Corporation Focused rotational ivus transducer using single crystal composite material
DK3446742T3 (da) * 2013-03-15 2023-09-04 Carewear Corp Lysterapienhed
EP3544515B1 (en) * 2016-11-22 2021-01-06 Koninklijke Philips N.V. Ultrasound device and acoustic component for use in such a device
US11260424B2 (en) * 2020-01-20 2022-03-01 The Board Of Trustees Of The Leland Stanford Junior University Contoured electrode for capacitive micromachined ultrasonic transducer

Also Published As

Publication number Publication date
EP4308310A4 (en) 2025-01-08
WO2022193005A1 (en) 2022-09-22
US20240181278A1 (en) 2024-06-06
AU2022236301A1 (en) 2023-09-28
EP4308310A1 (en) 2024-01-24
CA3173282A1 (en) 2022-09-22
JP2024515453A (ja) 2024-04-10

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