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    • 1. 发明授权
    • High quality factor resonators for liquid immersion biological and chemical sensors
    • 液体生物和化学传感器的高品质因子谐振器
    • US07694552B2
    • 2010-04-13
    • US12069730
    • 2008-02-11
    • Butrus T. Khuri-YakubGoksen G. Yaralioglu
    • Butrus T. Khuri-YakubGoksen G. Yaralioglu
    • G01N29/00G01N15/06
    • G01N29/022G01N2291/014G01N2291/02466
    • A mechanical resonator capable of providing an intrinsically high mechanical quality factor in immersion is provided. The resonator includes a membrane attached at its perimeter to a frame, such that a front side of the membrane is in contact with the liquid, and the back side of the membrane is not in contact with the liquid or the frame. The membrane can act as a mechanical resonator. The quality factor of this resonator is enhanced by providing a pressure release boundary region on the frame in proximity to the membrane and in contact with the liquid. The pressure release boundary region provides a soft boundary condition, in the sense that a mechanical impedance on the solid side of the solid-liquid interface is less than the liquid mechanical impedance. Providing such a soft boundary condition reduces the mechanical energy loss due to excitation of waves in the liquid, thereby improving resonator quality factor. Such high-Q resonators are particularly useful for sensor applications.
    • 提供一种能够提供本质上高的浸入机械品质因子的机械谐振器。 谐振器包括在其周边附接到框架的膜,使得膜的前侧与液体接触,并且膜的背面不与液体或框架接触。 膜可以用作机械谐振器。 通过在框架上靠近膜并与液体接触来提供压力释放边界区域来增强该谐振器的品质因数。 压力释放边界区域提供了软边界条件,这在固体 - 液体界面的固体侧的机械阻抗小于液体机械阻抗的意义上。 提供这样的软边界条件降低了由于液体中的波的激发引起的机械能损失,从而改善了谐振器品质因数。 这种高Q谐振器对于传感器应用特别有用。
    • 4. 发明申请
    • High quality factor resonators for liquid immersion biological and chemical sensors
    • 液体生物和化学传感器的高品质因子谐振器
    • US20080190181A1
    • 2008-08-14
    • US12069730
    • 2008-02-11
    • Butrus T. Khuri-YakubGoksen G. Yaralioglu
    • Butrus T. Khuri-YakubGoksen G. Yaralioglu
    • G01N29/04
    • G01N29/022G01N2291/014G01N2291/02466
    • A mechanical resonator capable of providing an intrinsically high mechanical quality factor in immersion is provided. The resonator includes a membrane attached at its perimeter to a frame, such that a front side of the membrane is in contact with the liquid, and the back side of the membrane is not in contact with the liquid or the frame. The membrane can act as a mechanical resonator. The quality factor of this resonator is enhanced by providing a pressure release boundary region on the frame in proximity to the membrane and in contact with the liquid. The pressure release boundary region provides a soft boundary condition, in the sense that a mechanical impedance on the solid side of the solid-liquid interface is less than the liquid mechanical impedance. Providing such a soft boundary condition reduces the mechanical energy loss due to excitation of waves in the liquid, thereby improving resonator quality factor. Such high-Q resonators are particularly useful for sensor applications.
    • 提供一种能够提供本质上高的浸入机械品质因子的机械谐振器。 谐振器包括在其周边附接到框架的膜,使得膜的前侧与液体接触,并且膜的背面不与液体或框架接触。 膜可以用作机械谐振器。 通过在框架上靠近膜并与液体接触来提供压力释放边界区域来增强该谐振器的品质因数。 压力释放边界区域提供了软边界条件,这在固体 - 液体界面的固体侧的机械阻抗小于液体机械阻抗的意义上。 提供这样的软边界条件降低了由于液体中的波的激发引起的机械能损失,从而改善了谐振器品质因数。 这种高Q谐振器对于传感器应用特别有用。
    • 5. 发明授权
    • Micromachined ultrasonic transducer having compliant post structure
    • 具有顺应柱结构的微加工超声换能器
    • US08451693B2
    • 2013-05-28
    • US12806763
    • 2010-08-20
    • Amin NikoozadehButrus T. Khuri-Yakub
    • Amin NikoozadehButrus T. Khuri-Yakub
    • H04R19/00B06B1/02
    • B06B1/0292
    • A compression post capacitive micromachined ultrasonic transducer (CMUT) is provided. The compression post CMUT includes a first electrode, a top conductive layer having a pattern of post holes, a moveable mass that includes the first electrode. The compression post CMUT further includes an operating gap disposed between the top surface of the top conductive layer and a bottom surface of the moveable mass, a pattern of compression posts, where a proximal end the compression post is connected perpendicularly to a bottom surface of the moveable mass, where the pattern of compression posts span through the pattern of post holes. The top conductive layer includes the second electrode that is electronically insulated from the first electrode, where the pattern of compression posts compress to provide a restoring force in a direction that is normal to the bottom surface of the moveable mass.
    • 提供压缩后电容式微机械超声波换能器(CMUT)。 压缩柱CMUT包括第一电极,具有柱孔图案的顶部导电层,包括第一电极的可移动质量块。 压缩柱CMUT还包括设置在顶部导电层的顶表面和可移动块的底表面之间的操作间隙,压缩柱的图案,其中压缩柱的近端垂直于底部表面连接 可移动质量块,其中压缩柱的图案跨过柱孔的图案。 顶部导电层包括与第一电极电子绝缘的第二电极,其中压缩柱的图案被压缩以在与可移动质量块的底表面垂直的方向上提供恢复力。
    • 6. 发明申请
    • Medical Screening and Diagnostics Based on Air-Coupled Photoacoustics
    • 基于空气耦合光声学的医学筛查和诊断
    • US20130023752A1
    • 2013-01-24
    • US13554985
    • 2012-07-20
    • Butrus T. Khuri-YakubOmer Oralkan
    • Butrus T. Khuri-YakubOmer Oralkan
    • A61B6/00
    • A61B5/0095A61B5/0507
    • Surface selective photoacoustic (PA) medical imaging is introduced. Surface selective PA imaging is responsive to surface features and does not image sub-surface features, in contrast to conventional PA imaging. The surface PA signal can be considerably larger than the bulk PA signal, for an air-coupled (or gas-coupled) acoustic transducer. Distinguishing these two signals based on time of arrival at the transducer can further distinguish the two signals. This approach provides numerous advantages.Non-contact imaging simplifies and expedites imaging, and can serve as a replacement for visual inspection by physicians. Applications include skin screening and endoscopy.
    • 介绍了表面选择性光声(PA)医学成像。 与传统的PA成像相比,表面选择性PA成像对表面特征有反应,并且不影像亚表面特征。 对于空气耦合(或气体耦合)的声换能器,表面PA信号可以大大地大于体积PA信号。 基于到达换能器的时间区分这两个信号可以进一步区分两个信号。 这种方法提供了许多优点。 非接触式成像简化并加速成像,可作为医生进行视觉检查的替代品。 应用包括皮肤筛查和内窥镜检查。
    • 7. 发明授权
    • Apparatus and method for phased subarray imaging
    • 用于相位子阵列成像的装置和方法
    • US07972271B2
    • 2011-07-05
    • US11709347
    • 2007-02-21
    • Jeremy JohnsonMustafa KaramanButrus T. Khuri-Yakub
    • Jeremy JohnsonMustafa KaramanButrus T. Khuri-Yakub
    • A61B8/14
    • A61B8/14G01S7/52046G01S15/8915G01S15/8927G01S15/8993
    • An invention for coherent array image formation and restoration is taught. The invention is applicable for both 2D and 3D imaging using either 1D or 2D arrays, respectively. A transducer array is subdivided into subarrays, each subarray having a number of adjacent array elements. All elements of each subarray transmit and receive in parallel. The signals received from each subarray are delayed and summed to form scan lines, or beams. The low-beam-rate beams formed from each subarray are upsampled and interpolated prior to forming high-beam-rate images. Depending on the subarray geometry, a subarray-dependent restoration filter is also applied to the subarray beams. The restored beams from each subarray are combined to form the final high-beam-rate image. The invention significantly reduces the front-end hardware complexity compared to conventional methods such as full phased array imaging with comparable image quality.
    • 教导了相干阵列图像形成和恢复的发明。 本发明分别适用于使用1D或2D阵列的2D和3D成像。 换能器阵列被细分为子阵列,每个子阵列具有多个相邻的阵列元件。 每个子阵列的所有元素并行传输和接收。 从每个子阵列接收的信号被延迟并相加以形成扫描线或光束。 在形成高光束速率图像之前,从每个子阵列形成的低光束速率光束被上采样和内插。 根据子阵列几何,子阵列依赖的恢复滤波器也被应用于子阵列波束。 来自每个子阵列的恢复的波束被组合以形成最终的高光束速率图像。 与常规方法相比,本发明显着降低了前端硬件复杂性,例如具有可比较图像质量的全相控阵列成像。
    • 8. 发明申请
    • APPARATUS AND METHOD FOR NON-INVASIVE AND MINIMALLY-INVASIVE SENSING OF PARAMETERS RELATING TO BLOOD
    • 用于非侵入性和微量入侵感染参数相关血液的装置和方法
    • US20100152591A1
    • 2010-06-17
    • US12618614
    • 2009-11-13
    • Zengpin YuButrus T. Khuri-YakubXuefeng ChengDaniel Hwan Kim
    • Zengpin YuButrus T. Khuri-YakubXuefeng ChengDaniel Hwan Kim
    • A61B5/02
    • A61B5/14552A61B5/0051A61B5/029A61B5/14551A61B5/1459A61B8/00A61B8/12
    • A system and method for monitoring one or more parameters relating to blood, such as cardiac output, of a patient is provided. The system preferably includes an acoustic energy transducer unit configured and positioned to transmit acoustic energy into a target structure, preferably a blood vessel, within the patient so as to induce a measurable change, preferably a change in blood volume, within the target structure. The transducer unit can be an ultrasonic array, annular array, or groups thereof, or a single element transducer. The unit can also be a vibrator or acoustic loudspeaker. An optical transmitter transmits light into the target structure, and an optical receiver senses light scattered from within the target structure. The blood parameter can then be estimated from the sensed scattered radiation. Relative blood oxygen saturation in the blood vessel can be estimated by transmitting two wavelengths to measure oxy-hemoglobin and deoxy-hemoglobin.
    • 提供了一种用于监测与患者血液(例如心输出量)相关的一个或多个参数的系统和方法。 该系统优选地包括声能换能器单元,其被配置和定位成将声能传递到患者体内的目标结构,优选血管,以便在目标结构内引起可测量的变化,优选血容量的变化。 换能器单元可以是超声波阵列,环形阵列或其组,或单个元件换能器。 该单元也可以是振动器或声音扬声器。 光学发射器将光发射到目标结构中,并且光学接收器感测从目标结构内散射的光。 然后可以从感测的散射辐射估计血液参数。 可以通过传输两个波长来估计血管中的相对血氧饱和度来测量氧血红蛋白和脱氧血红蛋白。