EP0142215A2 - Transducteur ultrasonore ayant des modes vibratoires améliorées - Google Patents

Transducteur ultrasonore ayant des modes vibratoires améliorées Download PDF

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Publication number
EP0142215A2
EP0142215A2 EP84303562A EP84303562A EP0142215A2 EP 0142215 A2 EP0142215 A2 EP 0142215A2 EP 84303562 A EP84303562 A EP 84303562A EP 84303562 A EP84303562 A EP 84303562A EP 0142215 A2 EP0142215 A2 EP 0142215A2
Authority
EP
European Patent Office
Prior art keywords
transducer
piezoelectric material
metal
subelements
ultrasonic transducer
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.)
Withdrawn
Application number
EP84303562A
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German (de)
English (en)
Other versions
EP0142215A3 (fr
Inventor
George Woodrow Keilman
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.)
Advanced Technology Laboratories Inc
Original Assignee
Advanced Technology Laboratories 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 Advanced Technology Laboratories Inc filed Critical Advanced Technology Laboratories Inc
Publication of EP0142215A2 publication Critical patent/EP0142215A2/fr
Publication of EP0142215A3 publication Critical patent/EP0142215A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • B06B1/0607—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 multiple elements
    • B06B1/0622—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 multiple elements on one surface

Definitions

  • the present invention relates to ultrasound transducers.
  • it relates to ultrasound transducers of the type which generate and receive longitudinal waves for use in medical ultrasound imaging.
  • various modes of vibration of piezoelectric material are well known which are useful for generating longitudinal waves. These include the "plate” mode, in which a relatively flat plate of piezoelectric material vibrates in a manner such that ultrasound waves are transmitted in a direction normal to the surface of the plate when electrodes connected to the upper and lower plate surfaces are energized, and the "bar” mode, in which a long, thin bar of piezoelectric material having electrodes connected at either end of the bar vibrates to generate wave transmissions along the longitudinal axis of the bar.
  • Beam mode in which a long, thin bar of piezoelectric material having elongated electrodes on either side of the bar vibrates to generate wave transmissions which are perpendicular to the longitudinal axis of the bar, such as in a phased array or linear array transducer.
  • mixed modes of vibration which may include “plate” mode, “bar” mode, or “beam” mode vibrations, together with lateral vibration modes.
  • lateral modes occur to an unacceptable level in piezoelectric material in which the ratio of the piezoelectric material's height to its width (H/W) is in a ratio of approximately 0.5 to 2 for transducers which utilize the half wavelength resonance mode or in a ratio of approximately 0.25 to 1 for transducers which utilize the quarter wavelength resonance mode.
  • the lateral modes of vibration occur in any piezoelectric material to some extent, depending upon the geometry of each element which comprises the transducer and the properties of the particular piezoelectric material. It is only a severe problem in half wavelength transducers when H/W is between about 0.5 and 2 and in quarter wavelength transducers when H/W is between about 0.25 and 1.
  • an annular array transducer which can be electronically focused over a large range without having to suffer the problems of lateral mode vibrations in the outer rings would be desirable.
  • an improved ultrasonic transducer comprising a piece of piezoelectric material which has been subdivided into subelements smaller than the electrodes attached to said subelements, whereby the vibrational mode of the subelements is determined by their physical shape and dimensions, rather than by the shape or dimensions of the electrode geometry.
  • the bar vibrational mode can be combined with any transducer design, because the piezoelectric material is sawed into a large number of subelements which each vibrate in the bar mode due to their physical shape and dimensions. These subelements are then electrically connected to have any desired element geometry. Accordingly, it is possible to design transducers of arbitrary configuration which have the same vibrational mode in all elements.
  • a circular piece of piezoelectric material 10, shown in FIG. 1 is sawed, by a semiconductor dicing saw. for example, into a number of subelements 12.
  • the subelements 12 are substantially square, having an edge length. W, which is substantially smaller than the height. H, of the piezoelectric material 10.
  • H may be approximately 20 mils (0.5 mm)
  • W may be approximately 8 mils (0.2 mm) for a 3 MHz medical ultrasound transducer.
  • the saw kerfs 14 extend from a top surface 16 of the piezoelectric material 10 substantially down to the bottom surface 18.
  • the saw kerfs 14 do not extend completely through to the bottom surface 18 of the piezoelectric material 10. thereby maintaining the structural integrity of the piezoelectric material 10 and the electrode pattern.
  • the subelements 12 of the top surface 16 must be reconnected electrically. While there are a number of ways in which this can be done, in the preferred method the saw kerfs 14 are filled with a low viscosity, non-conductive epoxy. Then, in the preferred embodiment, a tri-metal system is sputtered onto the surface of the epoxy to form the upper electrode 20 which also functions as an RF shield if electrically connected to ground.
  • a tri-metal system provides a first metal which adheres well to the underlying material, a second metal which provides coupling between the first metal and a third metal, and a third metal which is relatively impervious to oxidation and which can be soldered to easily.
  • the first metal is chrome
  • the second metal is nickel
  • the third metal is copper.
  • One or more quarter wave acoustic matching layers 22 of, for example, non-conductive, filled epoxy is then applied over the surface of the top electrode 20 in a manner and for reasons which are well known in the art.
  • Electrodes 24 are formed on the bottom surface 18 in any desired configuration.
  • the electrodes 24 are in the form of an annular array pattern, as shown in FIG. 3.
  • a layer of conductive material such as copper, is applied to the bottom of the piezoelectric material 10.
  • a layer of resist material is printed in the form of the pattern of the bottom electrodes on the conductive layer, and the exposed portions of the conductive layer are etched to remove the undesired portions down to the piezoelectric material 10.
  • An acoustic backing layer 26 is applied to the bottom electrode pattern 24, the purpose of which is well known in the art.
  • the minimum interelectrode spacing between the annular rings of the electrode pattern is selected to insure that no two electrodes can energize the same subelement 12. This can be accomplished by using an interelectrode spacing which is greater than W times the square root of 2 (for square subelements 12 having an edge length W).
  • the piezoelectric material 30 is diced into subelements 32, with the saw kerfs 34 going completely through to a quarter wavelength mismatching layer 36.
  • the piezoelectric material 30 is itself approximately a quarter wavelength thick rather than one-half wavelength thick.
  • one or more quarter wavelength thick matching layers 38 are applied to an electrode 39 on the face 40 of the piezoelectric material 30.
  • the particular material used for the mismatching layer 36 is selected to have an acoustic impedance of Z L with a backing layer 37 (on the mismatching layer 36.) having an acoustic impedance of Z B , resulting in an input impedance into the mismatching layer 36, as seen from the piezoelectric material 30, which is (Z L ) 2 /Z B near the frequency for which the layer 36 is approximately one-quarter wavelength thick.
  • the mismatching layer 36 is preferably conductive so that the rear electrode pattern 41 may be formed in the mismatching layer 36. In certain instances, as will be understood by those skilled in the art, optimization of a particular transducer design may require the mismatching layer 36 to be other than one-quarter wavelength thick.
  • the height-to-width ratio (H/W) required to substantially eliminate undesired mixed vibrational modes is governed by different rules than for a half wavelength thick piece of piezoelectric material 30. Accordingly, the mixed mode of operation will not be experienced in this particular embodiment unless the height-to-width ratio is substantially in the range of about 0.25 to 1. Accordingly, the individual subelements 32 can have a height-to-width ratio of approximately 1.25 which makes them structurally stronger than in the embodiment described with respect to FIG. 2.
  • the height-to-width ratio H/W. is selected to be substantially greater than 2. In particular, a ratio of 2.5 has been found to be acceptable.
  • the present invention is particularly adapted for use in annular array type devices, it could also be used in linear or phased array type devices, in which case the electrode pattern which is applied at this step would be different.
  • annular array electrode pattern is used.
  • the present invention can be utilized in order to provide a linear array in which the elements operate in a "bar mode" rather than in the conventional beam mode.
  • bar mode devices experience greater coupling between electrical energy and acoustic energy which can provide advantages in linear arrays or phased arrays.
  • annular array ultrasound transducer having individual annular elements which are well matched to provide substantially equal intensity signals at various depths and which have excellent frequency match between elements is constructed.
  • the problems heretofore experienced with annular array transducers have been substantially eliminated.
  • medical ultrasound transducers can be manufactured in any desirable transducer geometry, such as the annular array described herein, with a uniform vibration mode for all the elements of the transducer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
EP84303562A 1983-05-26 1984-05-25 Transducteur ultrasonore ayant des modes vibratoires améliorées Withdrawn EP0142215A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49836483A 1983-05-26 1983-05-26
US498364 1983-05-26

Publications (2)

Publication Number Publication Date
EP0142215A2 true EP0142215A2 (fr) 1985-05-22
EP0142215A3 EP0142215A3 (fr) 1987-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303562A Withdrawn EP0142215A3 (fr) 1983-05-26 1984-05-25 Transducteur ultrasonore ayant des modes vibratoires améliorées

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EP (1) EP0142215A3 (fr)
JP (1) JPS605133A (fr)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008508A1 (fr) * 1988-03-08 1989-09-21 Karl Storz Gmbh & Co. Emetteur piezoelectrique de sons a usages therapeutiques
EP0480045A1 (fr) * 1990-03-20 1992-04-15 Matsushita Electric Industrial Co., Ltd. Sonde ultrasonique
EP0589396A2 (fr) * 1992-09-23 1994-03-30 Acuson Corporation Transducteur à ultrason muni d'un support absorbant rigide
WO2003002272A1 (fr) * 2001-06-28 2003-01-09 Koninklijke Philips Electronics N.V. Systemes d'imagerie acoustique pouvant s'utiliser avec de basses tensions de pilotage
US9694211B2 (en) 2004-10-06 2017-07-04 Guided Therapy Systems, L.L.C. Systems for treating skin laxity
US9694212B2 (en) 2004-10-06 2017-07-04 Guided Therapy Systems, Llc Method and system for ultrasound treatment of skin
US9707412B2 (en) 2004-10-06 2017-07-18 Guided Therapy Systems, Llc System and method for fat and cellulite reduction
US9713731B2 (en) 2004-10-06 2017-07-25 Guided Therapy Systems, Llc Energy based fat reduction
US9802063B2 (en) 2012-09-21 2017-10-31 Guided Therapy Systems, Llc Reflective ultrasound technology for dermatological treatments
US9827449B2 (en) 2004-10-06 2017-11-28 Guided Therapy Systems, L.L.C. Systems for treating skin laxity
US9895560B2 (en) 2004-09-24 2018-02-20 Guided Therapy Systems, Llc Methods for rejuvenating skin by heating tissue for cosmetic treatment of the face and body
US9974982B2 (en) 2004-10-06 2018-05-22 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US10046181B2 (en) 2004-10-06 2018-08-14 Guided Therapy Systems, Llc Energy based hyperhidrosis treatment
US10420960B2 (en) 2013-03-08 2019-09-24 Ulthera, Inc. Devices and methods for multi-focus ultrasound therapy
US10537304B2 (en) 2008-06-06 2020-01-21 Ulthera, Inc. Hand wand for ultrasonic cosmetic treatment and imaging
US10603521B2 (en) 2014-04-18 2020-03-31 Ulthera, Inc. Band transducer ultrasound therapy
US10795042B2 (en) 2015-11-24 2020-10-06 Halliburton Energy Services, Inc. Ultrasonic transducer with suppressed lateral mode
US10864385B2 (en) 2004-09-24 2020-12-15 Guided Therapy Systems, Llc Rejuvenating skin by heating tissue for cosmetic treatment of the face and body
JP2021023395A (ja) * 2019-07-31 2021-02-22 キヤノンメディカルシステムズ株式会社 超音波プローブ及び超音波診断装置
US11207548B2 (en) 2004-10-07 2021-12-28 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US11224895B2 (en) 2016-01-18 2022-01-18 Ulthera, Inc. Compact ultrasound device having annular ultrasound array peripherally electrically connected to flexible printed circuit board and method of assembly thereof
US11235179B2 (en) 2004-10-06 2022-02-01 Guided Therapy Systems, Llc Energy based skin gland treatment
US11241218B2 (en) 2016-08-16 2022-02-08 Ulthera, Inc. Systems and methods for cosmetic ultrasound treatment of skin
US11338156B2 (en) 2004-10-06 2022-05-24 Guided Therapy Systems, Llc Noninvasive tissue tightening system
US11724133B2 (en) 2004-10-07 2023-08-15 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US11883688B2 (en) 2004-10-06 2024-01-30 Guided Therapy Systems, Llc Energy based fat reduction
US11944849B2 (en) 2018-02-20 2024-04-02 Ulthera, Inc. Systems and methods for combined cosmetic treatment of cellulite with ultrasound

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501808A1 (de) * 1985-01-21 1986-07-24 Siemens AG, 1000 Berlin und 8000 München Ultraschallwandler
EP2279696A3 (fr) 2004-10-06 2014-02-26 Guided Therapy Systems, L.L.C. Procédé et système pour mastopexie non invasive

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122725A (en) * 1976-06-16 1978-10-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Length mode piezoelectric ultrasonic transducer for inspection of solid objects
EP0006623A2 (fr) * 1978-07-05 1980-01-09 Siemens Aktiengesellschaft Transducteur ultrasonique
EP0025092A1 (fr) * 1979-07-20 1981-03-18 Siemens Aktiengesellschaft Transducteur ultrasonore et procédé pour sa fabrication
FR2485858A1 (fr) * 1980-06-25 1981-12-31 Commissariat Energie Atomique Procede de fabrication de transducteurs ultrasonores de formes complexes et application a l'obtention de transducteurs annulaires
US4434384A (en) * 1980-12-08 1984-02-28 Raytheon Company Ultrasonic transducer and its method of manufacture
FR2544577A1 (fr) * 1983-04-15 1984-10-19 Centre Nat Rech Scient Sonde ultrasonore a reseau de traducteurs et procede de fabrication d'une telle sonde

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122725A (en) * 1976-06-16 1978-10-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Length mode piezoelectric ultrasonic transducer for inspection of solid objects
EP0006623A2 (fr) * 1978-07-05 1980-01-09 Siemens Aktiengesellschaft Transducteur ultrasonique
EP0025092A1 (fr) * 1979-07-20 1981-03-18 Siemens Aktiengesellschaft Transducteur ultrasonore et procédé pour sa fabrication
FR2485858A1 (fr) * 1980-06-25 1981-12-31 Commissariat Energie Atomique Procede de fabrication de transducteurs ultrasonores de formes complexes et application a l'obtention de transducteurs annulaires
US4434384A (en) * 1980-12-08 1984-02-28 Raytheon Company Ultrasonic transducer and its method of manufacture
FR2544577A1 (fr) * 1983-04-15 1984-10-19 Centre Nat Rech Scient Sonde ultrasonore a reseau de traducteurs et procede de fabrication d'une telle sonde

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ACOUSTICAL IMAGING, Minneapolis, Minnesota, US, 26th-28th October 1983, pages 357-368, vol. 13; P. CHALLANDE et al.: "A new technique for realizing annular arrays or complex shaped transducers" *

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008508A1 (fr) * 1988-03-08 1989-09-21 Karl Storz Gmbh & Co. Emetteur piezoelectrique de sons a usages therapeutiques
EP0480045A1 (fr) * 1990-03-20 1992-04-15 Matsushita Electric Industrial Co., Ltd. Sonde ultrasonique
EP0480045A4 (en) * 1990-03-20 1993-04-14 Matsushita Electric Industrial Co., Ltd. Ultrasonic probe
EP0589396A2 (fr) * 1992-09-23 1994-03-30 Acuson Corporation Transducteur à ultrason muni d'un support absorbant rigide
EP0589396A3 (fr) * 1992-09-23 1995-07-12 Acuson Transducteur à ultrason muni d'un support absorbant rigide.
WO2003002272A1 (fr) * 2001-06-28 2003-01-09 Koninklijke Philips Electronics N.V. Systemes d'imagerie acoustique pouvant s'utiliser avec de basses tensions de pilotage
US9895560B2 (en) 2004-09-24 2018-02-20 Guided Therapy Systems, Llc Methods for rejuvenating skin by heating tissue for cosmetic treatment of the face and body
US10864385B2 (en) 2004-09-24 2020-12-15 Guided Therapy Systems, Llc Rejuvenating skin by heating tissue for cosmetic treatment of the face and body
US10328289B2 (en) 2004-09-24 2019-06-25 Guided Therapy Systems, Llc Rejuvenating skin by heating tissue for cosmetic treatment of the face and body
US10245450B2 (en) 2004-10-06 2019-04-02 Guided Therapy Systems, Llc Ultrasound probe for fat and cellulite reduction
US11717707B2 (en) 2004-10-06 2023-08-08 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US9827449B2 (en) 2004-10-06 2017-11-28 Guided Therapy Systems, L.L.C. Systems for treating skin laxity
US9827450B2 (en) 2004-10-06 2017-11-28 Guided Therapy Systems, L.L.C. System and method for fat and cellulite reduction
US9833640B2 (en) 2004-10-06 2017-12-05 Guided Therapy Systems, L.L.C. Method and system for ultrasound treatment of skin
US9833639B2 (en) 2004-10-06 2017-12-05 Guided Therapy Systems, L.L.C. Energy based fat reduction
US9713731B2 (en) 2004-10-06 2017-07-25 Guided Therapy Systems, Llc Energy based fat reduction
US9974982B2 (en) 2004-10-06 2018-05-22 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US10010724B2 (en) 2004-10-06 2018-07-03 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US10010726B2 (en) 2004-10-06 2018-07-03 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US10010721B2 (en) 2004-10-06 2018-07-03 Guided Therapy Systems, L.L.C. Energy based fat reduction
US10010725B2 (en) 2004-10-06 2018-07-03 Guided Therapy Systems, Llc Ultrasound probe for fat and cellulite reduction
US10046182B2 (en) 2004-10-06 2018-08-14 Guided Therapy Systems, Llc Methods for face and neck lifts
US10046181B2 (en) 2004-10-06 2018-08-14 Guided Therapy Systems, Llc Energy based hyperhidrosis treatment
US10238894B2 (en) 2004-10-06 2019-03-26 Guided Therapy Systems, L.L.C. Energy based fat reduction
US11207547B2 (en) 2004-10-06 2021-12-28 Guided Therapy Systems, Llc Probe for ultrasound tissue treatment
US10252086B2 (en) 2004-10-06 2019-04-09 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US10265550B2 (en) 2004-10-06 2019-04-23 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US9707412B2 (en) 2004-10-06 2017-07-18 Guided Therapy Systems, Llc System and method for fat and cellulite reduction
US11883688B2 (en) 2004-10-06 2024-01-30 Guided Therapy Systems, Llc Energy based fat reduction
US10525288B2 (en) 2004-10-06 2020-01-07 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US10532230B2 (en) 2004-10-06 2020-01-14 Guided Therapy Systems, Llc Methods for face and neck lifts
US11697033B2 (en) 2004-10-06 2023-07-11 Guided Therapy Systems, Llc Methods for lifting skin tissue
US11400319B2 (en) 2004-10-06 2022-08-02 Guided Therapy Systems, Llc Methods for lifting skin tissue
US10603519B2 (en) 2004-10-06 2020-03-31 Guided Therapy Systems, Llc Energy based fat reduction
US10603523B2 (en) 2004-10-06 2020-03-31 Guided Therapy Systems, Llc Ultrasound probe for tissue treatment
US10610706B2 (en) 2004-10-06 2020-04-07 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US10610705B2 (en) 2004-10-06 2020-04-07 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US11338156B2 (en) 2004-10-06 2022-05-24 Guided Therapy Systems, Llc Noninvasive tissue tightening system
US9694212B2 (en) 2004-10-06 2017-07-04 Guided Therapy Systems, Llc Method and system for ultrasound treatment of skin
US10888716B2 (en) 2004-10-06 2021-01-12 Guided Therapy Systems, Llc Energy based fat reduction
US10888717B2 (en) 2004-10-06 2021-01-12 Guided Therapy Systems, Llc Probe for ultrasound tissue treatment
US10888718B2 (en) 2004-10-06 2021-01-12 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US11235179B2 (en) 2004-10-06 2022-02-01 Guided Therapy Systems, Llc Energy based skin gland treatment
US10960236B2 (en) 2004-10-06 2021-03-30 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US11235180B2 (en) 2004-10-06 2022-02-01 Guided Therapy Systems, Llc System and method for noninvasive skin tightening
US11167155B2 (en) 2004-10-06 2021-11-09 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US11179580B2 (en) 2004-10-06 2021-11-23 Guided Therapy Systems, Llc Energy based fat reduction
US9694211B2 (en) 2004-10-06 2017-07-04 Guided Therapy Systems, L.L.C. Systems for treating skin laxity
US11207548B2 (en) 2004-10-07 2021-12-28 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US11724133B2 (en) 2004-10-07 2023-08-15 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
US10537304B2 (en) 2008-06-06 2020-01-21 Ulthera, Inc. Hand wand for ultrasonic cosmetic treatment and imaging
US11123039B2 (en) 2008-06-06 2021-09-21 Ulthera, Inc. System and method for ultrasound treatment
US11723622B2 (en) 2008-06-06 2023-08-15 Ulthera, Inc. Systems for ultrasound treatment
US9802063B2 (en) 2012-09-21 2017-10-31 Guided Therapy Systems, Llc Reflective ultrasound technology for dermatological treatments
US11969609B2 (en) 2013-03-08 2024-04-30 Ulthera, Inc. Devices and methods for multi-focus ultrasound therapy
US10420960B2 (en) 2013-03-08 2019-09-24 Ulthera, Inc. Devices and methods for multi-focus ultrasound therapy
US11517772B2 (en) 2013-03-08 2022-12-06 Ulthera, Inc. Devices and methods for multi-focus ultrasound therapy
US10603521B2 (en) 2014-04-18 2020-03-31 Ulthera, Inc. Band transducer ultrasound therapy
US11351401B2 (en) 2014-04-18 2022-06-07 Ulthera, Inc. Band transducer ultrasound therapy
US10795042B2 (en) 2015-11-24 2020-10-06 Halliburton Energy Services, Inc. Ultrasonic transducer with suppressed lateral mode
US11224895B2 (en) 2016-01-18 2022-01-18 Ulthera, Inc. Compact ultrasound device having annular ultrasound array peripherally electrically connected to flexible printed circuit board and method of assembly thereof
US11241218B2 (en) 2016-08-16 2022-02-08 Ulthera, Inc. Systems and methods for cosmetic ultrasound treatment of skin
US11944849B2 (en) 2018-02-20 2024-04-02 Ulthera, Inc. Systems and methods for combined cosmetic treatment of cellulite with ultrasound
JP2021023395A (ja) * 2019-07-31 2021-02-22 キヤノンメディカルシステムズ株式会社 超音波プローブ及び超音波診断装置

Also Published As

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JPS605133A (ja) 1985-01-11
EP0142215A3 (fr) 1987-03-11

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