Collapsed mode operable cMUT including contoured substrate
    1.
    发明授权
    Collapsed mode operable cMUT including contoured substrate 有权
    折叠模式可操作的cMUT包括轮廓衬底

    公开(公告)号:US08787116B2

    公开(公告)日:2014-07-22

    申请号:US12747249

    申请日:2008-12-12

    IPC分类号: H04R19/00

    CPC分类号: B06B1/0292

    摘要: A capacitive ultrasound transducer capable of operation in collapsed mode either with a reduced bias voltage, or with no bias voltage, is provided. The transducer includes a substrate that is contoured so that a middle region of the flexible membrane is collapsed against the substrate in the absence of a bias voltage. A non-collapsible gap may exists between the substrate and peripheral regions of the flexible membrane. The contour of the substrate may be such as to strain the flexible membrane past the point of collapse, or to mechanically interfere with the flexible membrane. The substrate may include a further membrane disposed beneath the flexible membrane, the further membrane being contoured so that the flexible membrane is collapsed against it. The substrate may a support disposed beneath the further membrane to deflect a corresponding portion of the further membrane upward toward the flexible membrane. The support may be a post. The transducer may be operated in collapse mode with an improved efficiency (k2eff) as compared to otherwise similar conventional transducers exhibiting comparably uncontoured substrates. A related medical imaging system is provided, which may include an array of such transducers disposed on a common substrate. A method of operating such a transducer is provided that includes operating the transducer in the collapse mode in the absence of a bias voltage.

    摘要翻译: 提供能够以折叠模式操作或者具有降低的偏置电压或没有偏置电压的电容式超声换能器。 换能器包括基底,该基底的轮廓使得柔性膜的中间区域在没有偏置电压的情况下相对于基底折叠。 在柔性膜的基底和周边区域之间可能存在不可收缩的间隙。 衬底的轮廓可以是使柔性膜经过塌陷点,或机械地干涉柔性膜。 衬底可以包括设置在柔性膜下方的另一膜,另外的膜被成形为使得柔性膜相对于其折叠。 衬底可以是设置在另外的膜下方的支撑件,以将另外的膜的相应部分向上朝向柔性膜偏转。 支持可能是一个帖子。 传感器可以在崩溃模式下操作,其效率(k2eff)与其他相似的传统换能器相比表现出相当的未结合的基板。 提供了一种相关的医学成像系统,其可以包括设置在公共基底上的这种换能器的阵列。 提供了一种操作这种换能器的方法,其包括在没有偏置电压的情况下以折叠模式操作换能器。

    ULTRASONIC CMUT WITH SUPPRESSED ACOUSTIC COUPLING TO THE SUBSTRATE
    2.
    发明申请
    ULTRASONIC CMUT WITH SUPPRESSED ACOUSTIC COUPLING TO THE SUBSTRATE 审中-公开
    超声波接头与基板的抑制耦合

    公开(公告)号:US20130331705A1

    公开(公告)日:2013-12-12

    申请号:US14000891

    申请日:2012-03-13

    IPC分类号: A61B8/00

    摘要: An array of cMUT cells are formed on individually isolated massive plates on a substrate. The mass of each plate provides an inertial force in opposition to the force and motion of transmission by the cell which reduces the resultant translation of motion in the plate. The reduction in motion results in less coupling of acoustic energy into the substrate and contamination of the signals of adjacent cMUT cells by lateral waves. The unwanted wave coupling into the substrate can be further damped by compliant or sparse periodic mounting of the massive plates on the substrate.

    摘要翻译: cMUT电池阵列形成在基板上的单独隔离的块状板上。 每个板的质量提供与电池的传递力和力的相反的惯性力,这降低了板中运动的最终平移。 运动的减少导致声能较少耦合到衬底中并且通过侧向波污染相邻cMUT单元的信号。 可以通过在基板上的块状板的顺从或稀疏周期性安装来进一步阻尼到衬底中的不需要的波耦合。

    ADJUSTING MEASUREMENTS OF THE EFFECTS OF ACOUSTIC RADIATION FORCE FOR BACKGROUND MOTION EFFECTS
    3.
    发明申请
    ADJUSTING MEASUREMENTS OF THE EFFECTS OF ACOUSTIC RADIATION FORCE FOR BACKGROUND MOTION EFFECTS 审中-公开
    调节声辐射力对背景运动影响的影响的测量

    公开(公告)号:US20130296698A1

    公开(公告)日:2013-11-07

    申请号:US13990201

    申请日:2011-12-08

    IPC分类号: A61B8/08

    摘要: An ultrasonic diagnostic imaging system for shear wave measurement transmits push pulses into tissue for the generation of shear waves. Characteristics of the shear waves such as their velocity of passage through the tissue are measured to assess properties such as tissue stiffness. The measurements are compensated for effects of background motion by sampling echo signals from the tissue at different times and comparing the samples to detect the presence of relative motion between the ultrasound probe and the region of interest where shear waves are detected. Sensed background motion is used to adjust measured shear wave characteristics.

    摘要翻译: 用于剪切波测量的超声波诊断成像系统将推入脉冲传送到组织中以产生剪切波。 测量剪切波的特征,例如通过组织的速度,以评估组织刚度等性质。 通过在不同时间对来自组织的回波信号进行采样来对背景运动的影响进行补偿,并比较样本以检测超声探头与检测到剪切波的感兴趣区域之间的相对运动的存在。 感测背景运动用于调整测量的剪切波特性。

    CMUTs with a high-k dielectric
    4.
    发明授权
    CMUTs with a high-k dielectric 有权
    具有高k电介质的CMUT

    公开(公告)号:US08203912B2

    公开(公告)日:2012-06-19

    申请号:US12671108

    申请日:2008-07-31

    IPC分类号: H04R19/00 H04R17/00

    CPC分类号: B06B1/0292

    摘要: A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.

    摘要翻译: 电容式超声波换能器包括第一电极,第二电极和第三电极,所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域,以及设置在所述中心区域外侧的周边区域, 与第二电极的关系。 换能器还包括设置在第三电极和第一电极之间以及第三电极和第二电极之间的高介电常数材料层。 换能器可以以折叠模式操作,其中第三电极的周边区域相对于第二电极振荡,并且第三电极的中心区域相对于第一电极完全折叠,使得介电层夹在其间。 可以进一步包括诸如d31和d33模式压电致动的压电致动。 医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。

    ULTRASONIC TEETH CLEANING APPLIANCE HAVING SPATIAL, TEMPORAL AND/OR FREQUENCY VARIATIONS
    5.
    发明申请
    ULTRASONIC TEETH CLEANING APPLIANCE HAVING SPATIAL, TEMPORAL AND/OR FREQUENCY VARIATIONS 有权
    具有空间,时间和/或频率变化的超声波清洁器具

    公开(公告)号:US20110256503A1

    公开(公告)日:2011-10-20

    申请号:US13141551

    申请日:2009-12-09

    IPC分类号: A61C3/03

    CPC分类号: A61C17/20

    摘要: The appliance includes an appliance body (12) as well as a system for producing microbubbles (20) and a system for producing an ultrasound signal beam (22) in a frequency range which activates at least some of the microbubbles. The appliance includes at least one of the following: (a) an array of ultrasound transducer elements (40) which produce a plurality of ultrasound signal beams; (b) an amplitude modulation assembly (51) for modulating the amplitude of the ultrasound signal; and (c) a frequency modulation system (61) for changing the frequency of the ultrasound signals over a selected range, to impact a range of microbubble sizes.

    摘要翻译: 该器具包括器具主体(12)以及用于产生微泡(20)的系统和用于在激活至少一些微泡的频率范围内产生超声波信号光束(22)的系统。 该器具包括以下中的至少一个:(a)产生多个超声信号波束的超声换能器元件阵列(40); (b)用于调制超声波信号的振幅的调幅组件(51); 以及(c)用于在选定范围内改变超声波信号的频率的频率调制系统(61),以影响微泡尺寸的范围。

    APPARATUS FOR CLEANING TEETH USING A VARIABLE FREQUENCY ULTRASOUND
    6.
    发明申请
    APPARATUS FOR CLEANING TEETH USING A VARIABLE FREQUENCY ULTRASOUND 审中-公开
    使用可变频率超声波清洁牙齿的装置

    公开(公告)号:US20110076638A1

    公开(公告)日:2011-03-31

    申请号:US12678358

    申请日:2008-10-01

    IPC分类号: A61C17/20 A46B13/04

    CPC分类号: A61C17/20 A61C17/02

    摘要: The apparatus includes a source of gas (air) bubbles (14) in a liquid medium, the gas bubbles having a size range which is associated with the size of bacteria alone or in colonies, on teeth or other surfaces. A source of ultrasound signals (16, 18) has a range of frequencies between 200 kHz and 2 MHz, the ultrasound frequency range including the resonance frequencies of a majority of the bubbles. The application of the ultrasound to the bubble/liquid stream directed toward the biofilm on the teeth results in a dislodging/removal of the biofilm.

    摘要翻译: 该装置包括在液体介质中的气体(空气)气泡源(14),该气泡的尺寸范围与单独的细菌或集落中的细菌,齿或其他表面相关联。 超声信号源(16,18)具有200kHz和2MHz之间的频率范围,超声频率范围包括大部分气泡的共振频率。 将超声应用于朝向牙齿上的生物膜的气泡/液体流导致生物膜的移除/移除。

    CMUTS WITH A HIGH-K DIELECTRIC
    7.
    发明申请
    CMUTS WITH A HIGH-K DIELECTRIC 有权
    具有高K电介质的CMUTS

    公开(公告)号:US20100202254A1

    公开(公告)日:2010-08-12

    申请号:US12671108

    申请日:2008-07-31

    IPC分类号: B06B1/06

    CPC分类号: B06B1/0292

    摘要: A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.

    摘要翻译: 电容式超声波换能器包括第一电极,第二电极和第三电极,所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域,以及设置在所述中心区域外侧的周边区域, 与第二电极的关系。 换能器还包括设置在第三电极和第一电极之间以及第三电极和第二电极之间的高介电常数材料层。 换能器可以以折叠模式操作,其中第三电极的周边区域相对于第二电极振荡,并且第三电极的中心区域相对于第一电极完全折叠,使得介电层夹在其间。 可以进一步包括诸如d31和d33模式压电致动的压电致动。 医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。

    Hex packed two dimensional ultrasonic transducer arrays

    公开(公告)号:US06469422B2

    公开(公告)日:2002-10-22

    申请号:US10062374

    申请日:2002-01-30

    IPC分类号: H01L4108

    CPC分类号: B06B1/0622

    摘要: A two dimensional ultrasonic transducer array suitable for three dimensional phased array scanning is formed of hexagonally close packed transducer elements. In a preferred embodiment the transducer elements have a rectilinear shape, allowing the array to be fabricated with conventional dicing saw processes.