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    APODIZING BACKING STRUCTURES FOR ULTRASONIC TRANSDUCERS AND RELATED METHODS
    1.
    发明公开
    APODIZING BACKING STRUCTURES FOR ULTRASONIC TRANSDUCERS AND RELATED METHODS 审中-公开

    公开(公告)号：US20240181278A1

    公开(公告)日：2024-06-06

    申请号：US18550308

    申请日：2022-03-15

    Applicant: RESONANT ACOUSTICS INTERNATIONAL INC.

    Inventor： Nicholas Chris CHAGGARES ,  Khachic Chris KARSHAFIAN ,  Eric RIEDER

    IPC: A61N7/00 ,  B06B1/06

    CPC classification number: A61N7/00 ,  B06B1/0651 ,  B06B1/0677 ,  A61N2007/0095 ,  B06B2201/76

    Abstract: There is provided an apodizing wedge structure for a LIPUS treatment head. The LIPUS treatment head includes a low-volume fraction piezoelectric composite disc. The apodizing wedge structure includes an annular body for contacting a surface of the piezoelectric disc, the annular body including an inner perimeter having an inner thickness and an outer perimeter having an outer thickness. The annular body includes an inclined surface forming a continuous slope extending from the inner perimeter to the outer perimeter, the inner thickness being smaller than the outer thickness. The apodizing wedge is configured to change an apparent thickness of the piezoelectric disc with respect to resonant properties of the piezoelectric disc when the apodizing wedge structure is in acoustic communication with the piezoelectric disc, thereby allowing the LIPUS treatment head to generate a uniform near field. LIPUS treatment heads and ultrasonic transducers including such an apodizing wedge structure are also provided.

    Ultrasound probe with acoustic amplifier
    3.
    发明授权
    Ultrasound probe with acoustic amplifier 有权

    公开(公告)号：US11691177B2

    公开(公告)日：2023-07-04

    申请号：US15924625

    申请日：2018-03-19

    Applicant: ESAOTE SpA

    Inventor： Paolo Palchetti ,  Andrea Grandoni ,  Iolanda Cuseri

    IPC: B06B1/06 ,  G10K11/02 ,  A61B8/00

    CPC classification number: B06B1/0681 ,  A61B8/4483 ,  B06B1/0677 ,  B06B1/0685 ,  G10K11/02

    Abstract: A transducer assembly operable to transmit ultrasonic energy in a desired direction towards a zone adapted to be acoustically coupled to an object or area of interest is disclosed which has a transducer layer, a backing material disposed behind the transducer layer with respect to the desired direction, and a back-matching layer disposed between the transducer layer and the backing material to reflect towards the transducer layer part of the ultrasonic energy directed from the transducer layer to the backing material.
    The backing layer has an acoustic impedance higher than the acoustic impedance of the back-matching layer. The back-matching material has an impedance less than the impedance of the transducer layer and the transducer layer has a thickness greater than a ¼ of the wavelength of the ultrasound waves the assembly is configured to generate. A process for manufacturing a transducer assembly is also disclosed.

    Ultrasound array transducer for catheter use
    6.
    发明授权
    Ultrasound array transducer for catheter use 有权
    用于导管使用的超声阵列换能器

    公开(公告)号：US06709396B2

    公开(公告)日：2004-03-23

    申请号：US10196561

    申请日：2002-07-17

    Applicant: Aimé Flesch ,  Elisabeth Lacaze ,  An Nguyen-Dinh ,  Philippe Auclair ,  Rémi Dufait ,  Pascal Mauchamp

    Inventor： Aimé Flesch ,  Elisabeth Lacaze ,  An Nguyen-Dinh ,  Philippe Auclair ,  Rémi Dufait ,  Pascal Mauchamp

    IPC: A61B814

    CPC classification number: B06B1/0677 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4483 ,  A61B8/4488 ,  A61B2562/12 ,  Y10S128/916 ,  Y10T29/42

    Abstract: A catheter-based ultrasonic transducer array is provided which includes a piezoelectric member sandwiched between matching layers and a backing member. A flexible stiffening element or elements is embedded in the backing member. The element is opaque to radio frequencies and integrated along the azimuthal axis of the array so as to enable a user to view the element in an image of the array derived from the array output and thus determine the angular position of the array. A flexible interconnection assembly provides an electrical connection between the electrodes of the piezoelectric member and external cabling. Different methods are provided for adding a surrounding protective cover to the array.

    Abstract translation: 提供了一种基于导管的超声波换能器阵列，其包括夹在匹配层之间的压电构件和背衬构件。 柔性加强元件嵌入在背衬构件中。 元件对于射频是不透明的，并且沿着阵列的方位角轴积分，以便使得用户能够观察从阵列输出导出的阵列的图像中的元素，从而确定阵列的角位置。 柔性互连组件提供压电元件的电极和外部电缆之间的电连接。 提供了不同的方法来向阵列添加周围的保护盖。

    Bonded ultrasonic transducer and method for making
    8.
    发明授权
    Bonded ultrasonic transducer and method for making 失效
    粘结超声波换能器及其制造方法

    公开(公告)号：US5465897A

    公开(公告)日：1995-11-14

    申请号：US220306

    申请日：1994-03-29

    Applicant: Raymond D. Dixon ,  Lawrence H. Roe ,  Albert Migliori

    Inventor： Raymond D. Dixon ,  Lawrence H. Roe ,  Albert Migliori

    IPC: B06B1/06 ,  B23K20/02 ,  H01L41/24 ,  B23K1/19 ,  B23K101/36

    CPC classification number: B06B1/0677 ,  B23K20/023 ,  H01L41/313

    Abstract: An ultrasonic transducer is formed as a diffusion bonded assembly of piezoelectric crystal, backing material, and, optionally, a ceramic wear surface. The mating surfaces of each component are silver films that are diffusion bonded together under the application of pressure and heat. Each mating surface may also be coated with a reactive metal, such as hafnium, to increase the adhesion of the silver films to the component surfaces. Only thin silver films are deposited, e.g., a thickness of about 0.00635 mm, to form a substantially non-compliant bond between surfaces. The resulting transducer assembly is substantially free of self-resonances over normal operating ranges for taking resonant ultrasound measurements.

    Abstract translation: 超声波换能器形成为压电晶体，背衬材料和任选的陶瓷磨损表面的扩散接合组件。 每个组件的配合表面是在压力和热力的应用下扩散粘合在一起的银膜。 每个配合表面也可以涂覆有诸如铪的反应性金属，以增加银膜与组分表面的粘合性。 仅沉积薄的银膜，例如约0.00635mm的厚度，以在表面之间形成基本上非柔顺的结合。 所得到的换能器组件在正常操作范围内基本上没有自谐振，用于进行共振超声测量。

    Pressure transducer device
    9.
    发明授权
    Pressure transducer device 失效
    压力传感器装置

    公开(公告)号：US3763464A

    公开(公告)日：1973-10-02

    申请号：US3763464D

    申请日：1972-01-11

    Applicant: INST DU PETROLE CARBURANTS LUB

    Inventor： LAURENT J

    IPC: B06B1/06 ,  G01L9/08 ,  G01L23/10 ,  H04B13/00

    CPC classification number: B06B1/0677 ,  G01L9/08 ,  G01L23/10

    Abstract: Pressure transducer device comprising two flexible plates close to and facing each other and at least one pressure transducer element fastened to a plate on the side thereof opposite to the side facing the other plate, wherein at least one of the plates is provided with a rigid peripheral reinforced portion of a greater thickness than the central portion thereof, comprising a flat base against which the second plate is pressed, and wherein both plates are held in their relative positions by means of a tight acoustically transparent coating.

    Abstract translation: 压力传感器装置包括彼此靠近并彼此面对的两个柔性板，以及至少一个压力传感器元件，其紧固在与面向另一个板的一侧相对的一侧上的板上，其中至少一个板设置有刚性周边 加强部分的厚度大于其中心部分的厚度，包括平坦的基座，第二板被压在该平坦的基座上，并且其中两个板通过紧密的声透明的涂层保持在它们的相对位置。

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