Functional imaging using capacitive micromachined ultrasonic transducers
    3.
    发明申请
    Functional imaging using capacitive micromachined ultrasonic transducers 审中-公开
    使用电容微加工超声换能器的功能成像

    公开(公告)号:US20070287912A1

    公开(公告)日:2007-12-13

    申请号:US11803157

    申请日:2007-05-11

    IPC分类号: A61B8/00 A61N5/067

    摘要: The present invention provides an apparatus for functional imaging of an object that is compact, sensitive, and provides real-time three-dimensional images. The apparatus includes a source of non-ultrasonic energy, where the source induces generation of ultrasonic waves within the object. The source can provide any type of non-ultrasonic energy, including but not limited to light, heat, microwaves, and other electromagnetic fields. Preferably, the source is a laser. The apparatus also includes a single capacitive micromachined ultrasonic transducer (CMUT) device or an array of CMUTs. In the case of a single CMUT element, it can be mechanically scanned to simulate an array of any geometry. Among the advantages of CMUTs are tremendous fabrication flexibility and a typically wider bandwidth. Transducer arrays with high operating frequencies and with nearly arbitrary geometries can be fabricated. A method of functional imaging using the apparatus is also provided.

    摘要翻译: 本发明提供了一种用于对物体进行功能成像的装置,其是紧凑的,敏感的并且提供实时的三维图像。 该装置包括非超声能量源,其中源引起在物体内产生超声波。 源可以提供任何类型的非超声波能量,包括但不限于光,热,微波和其他电磁场。 优选地,源是激光。 该装置还包括单个电容微机械加速超声换能器(CMUT)装置或CMUT阵列。 在单个CMUT元件的情况下,可以机械扫描以模拟任何几何的阵列。 CMUT的优点之一是巨大的制造灵活性和通常更宽的带宽。 可以制造具有高工作频率和几乎任意几何形状的传​​感器阵列。 还提供了使用该装置的功能成像的方法。

    Method and system for operating capacitive membrane ultrasonic transducers
    4.
    发明申请
    Method and system for operating capacitive membrane ultrasonic transducers 有权
    用于操作电容式膜超声波换能器的方法和系统

    公开(公告)号:US20050234342A1

    公开(公告)日:2005-10-20

    申请号:US11094874

    申请日:2005-03-30

    IPC分类号: A61B8/14 B06B1/02

    CPC分类号: B06B1/0292 G10K9/12

    摘要: A novel operation regime for capacitive micromachined ultrasonic transducers (cMUTs). The collapse-snapback operation in which the center of the membrane makes intermittent contact with the substrate. This combines two distinct states of the membrane (in-collapse and out-of-collapse) to unleash unprecedented acoustic output pressures into the medium. The collapse-snapback operation utilizes a larger range of membrane defection profiles (both collapsed and released membrane profiles) and generates higher acoustic output pressures than the conventional operation. Collapse-snapback operation meets the extreme acoustic transmit pressure demands of the ultrasonic industry.

    摘要翻译: 电容式微加工超声换能器(cMUT)的新颖操作方案。 折叠回击操作,其中膜的中心与衬底间歇接触。 这结合了膜的两种截然不同的状态(塌陷和失真),以释放出前所未有的声输出压力进入介质。 塌陷 - 回弹操作利用更大范围的膜缺陷曲线(两个折叠和释放的膜轮廓),并产生比常规操作更高的声输出压力。 塌陷 - 回弹操作满足超声波行业的极端声学传输压力要求。

    Noninvasive Ultrasound-Based Retinal Stimulator: Ultrasonic Eye
    5.
    发明申请
    Noninvasive Ultrasound-Based Retinal Stimulator: Ultrasonic Eye 审中-公开
    无创超声波视网膜刺激仪:超声眼

    公开(公告)号:US20120259249A1

    公开(公告)日:2012-10-11

    申请号:US13441650

    申请日:2012-04-06

    IPC分类号: A61F9/08 A61N7/00

    CPC分类号: A61N7/022 A61B8/0808

    摘要: Focused ultrasound is a promising technology for neural stimulation that is non-invasive, and capable of passing through the skull. Here we use the isolated retina to characterize the effect of ultrasound on an intact neural circuit and compared these effects to those of visual stimulation of the same retinal ganglion cells. Ultrasound stimuli evoked precise, stable responses that looked qualitatively similar to strong visual responses but with shorter latency. We found that ultrasonic stimulation activates cells presynaptic to ganglion cells, which may include photoreceptors and interneurons. Ultrasonic stimulation is an effective and spatial-temporally precise method to activate the retina. Ultrasonic stimulation may have diagnostic potential to probe remaining retinal function in cases of photoreceptor degeneration, and therapeutic potential for use in a retinal prosthesis. In addition, ultrasound promises to be a useful tool to understand the dynamic activity in the interneuron population of the retina.

    摘要翻译: 聚焦超声波是一种有前途的神经刺激技术,非侵入性,能够通过颅骨。 在这里,我们使用孤立的视网膜来表征超声对完整神经回路的影响,并将这些效应与同一视网膜神经节细胞的视觉刺激相比较。 超声刺激诱发精确,稳定的反应,看起来质地与强视觉反应相似,但延迟较短。 我们发现超声波刺激激活细胞突触前神经节细胞,其可能包括光感受器和中间神经元。 超声波刺激是激活视网膜的有效和时空精确的方法。 在光感受器变性的情况下,超声波刺激可能具有探测剩余视网膜功能的诊断潜力,以及用于视网膜假体的治疗潜力。 此外,超声波有助于了解视网膜中间神经元群体的动态活动。

    Medical Screening and Diagnostics Based on Air-Coupled Photoacoustics
    6.
    发明申请
    Medical Screening and Diagnostics Based on Air-Coupled Photoacoustics 有权
    基于空气耦合光声学的医学筛查和诊断

    公开(公告)号:US20130023752A1

    公开(公告)日:2013-01-24

    申请号:US13554985

    申请日:2012-07-20

    IPC分类号: A61B6/00

    CPC分类号: A61B5/0095 A61B5/0507

    摘要: 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.

    摘要翻译: 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。

    Method and apparatus for ultrasound assisted local delivery of drugs and biomarkers
    7.
    发明申请
    Method and apparatus for ultrasound assisted local delivery of drugs and biomarkers 有权
    用于超声辅助局部递送药物和生物标志物的方法和装置

    公开(公告)号:US20100268152A1

    公开(公告)日:2010-10-21

    申请号:US12798982

    申请日:2010-04-14

    IPC分类号: A61M5/00

    摘要: The current invention provides an ultrasound-assisted delivery device, that includes a focused ultrasound transducer having an ultrasound focal point, a real-time imaging device having an imaging focal point, and a therapeutic delivery device, where the transducer and the imaging device are integrated with the delivery device, and the ultrasound focal point coincides with the imaging focal point, where the delivery device and transducer are disposed to provide an unobstructed imaging path for the real-time imaging device. The invention further includes a scanning optical or laser beam having a focal point disposed to sweep across the target, where the delivery device is disposed to deliver an optical contrast material to the target, and the scanning focal point coincides with the ultrasound and imaging focal points, where the target or the optical contrast material react to the scanning beam to generate at least one interface signal.

    摘要翻译: 本发明提供了一种超声辅助输送装置,其包括具有超声焦点的聚焦超声换能器,具有成像焦点的实时成像装置和治疗递送装置,其中所述换能器和成像装置被集成 并且超声焦点与成像焦点重合,其中输送装置和换能器被设置成为实时成像装置提供无障碍的成像路径。 本发明还包括扫描光学或激光束,其具有设置成扫过靶的焦点,其中输送装置设置成将光学对比材料输送到靶,并且扫描焦点与超声波和成像焦点重合 ,其中所述目标或所述光学对比材料对所述扫描光束起反应以产生至少一个接口信号。

    Image-guided delivery of therapeutic tools duing minimally invasive surgeries and interventions
    8.
    发明申请
    Image-guided delivery of therapeutic tools duing minimally invasive surgeries and interventions 审中-公开
    以图像为导向的治疗工具,提供微创手术和干预措施

    公开(公告)号:US20080221448A1

    公开(公告)日:2008-09-11

    申请号:US12072906

    申请日:2008-02-27

    IPC分类号: A61B8/00 A61B18/20 A61N7/00

    摘要: Imaged-guided therapy for minimally invasive surgeries and interventions is provided. An image-guided device includes an elongate tubular member, such as a catheter, an annular array of capacitive micromachined ultrasound transducers (cMUTs) for real-time three-dimensional forward-looking acoustic imaging, and a therapeutic tool. The therapeutic tool is positioned inside an inner lumen of the elongate tubular member and can be a device for tissue ablation, such as a high intensity focused ultrasound (HIFU) device or a laser. The HIFU device is operable at high frequencies to have a sufficiently small focus spot, thus a high focal intensity. The imaging annular array is also operable at high frequencies for good acoustic imaging resolution. The high resolution forward-looking imaging array, in combination with the high frequency HIFU transducer, provides a single image-guided therapy device for precise tissue ablation and real-time imaging feedback.

    摘要翻译: 提供了用于微创手术和干预措施的成像指导治疗。 图像引导装置包括细长管状构件,例如导管,用于实时三维前瞻性声学成像的电容微加工超声换能器(cMUT)的环形阵列和治疗工具。 治疗工具位于细长管状构件的内腔内,并且可以是用于组织消融的装置,例如高强度聚焦超声(HIFU)装置或激光。 HIFU装置可以在高频下操作以具有足够小的焦点,因此具有高焦距。 成像环形阵列也可在高频下操作以获得良好的声学成像分辨率。 高分辨率前瞻性成像阵列与高频HIFU传感器结合,提供了一个单一的图像引导治疗装置,用于精确的组织消融和实时成像反馈。

    Method and apparatus for ultrasound assisted local delivery of drugs and biomarkers
    9.
    发明授权
    Method and apparatus for ultrasound assisted local delivery of drugs and biomarkers 有权
    用于超声辅助局部递送药物和生物标志物的方法和装置

    公开(公告)号:US08852104B2

    公开(公告)日:2014-10-07

    申请号:US12798982

    申请日:2010-04-14

    IPC分类号: A61B5/05 A61B5/00 A61M37/00

    摘要: The current invention provides an ultrasound-assisted delivery device, that includes a focused ultrasound transducer having an ultrasound focal point, a real-time imaging device having an imaging focal point, and a therapeutic delivery device, where the transducer and the imaging device are integrated with the delivery device, and the ultrasound focal point coincides with the imaging focal point, where the delivery device and transducer are disposed to provide an unobstructed imaging path for the real-time imaging device. The invention further includes a scanning optical or laser beam having a focal point disposed to sweep across the target, where the delivery device is disposed to deliver an optical contrast material to the target, and the scanning focal point coincides with the ultrasound and imaging focal points, where the target or the optical contrast material react to the scanning beam to generate at least one interface signal.

    摘要翻译: 本发明提供了一种超声辅助输送装置,其包括具有超声焦点的聚焦超声换能器,具有成像焦点的实时成像装置和治疗递送装置,其中所述换能器和成像装置被集成 并且超声焦点与成像焦点重合,其中输送装置和换能器被设置成为实时成像装置提供无障碍的成像路径。 本发明还包括扫描光学或激光束,其具有设置成扫过靶的焦点,其中输送装置设置成将光学对比材料输送到靶,并且扫描焦点与超声波和成像焦点重合 ,其中所述目标或所述光学对比材料对所述扫描光束起反应以产生至少一个接口信号。

    Medical screening and diagnostics based on air-coupled photoacoustics
    10.
    发明授权
    Medical screening and diagnostics based on air-coupled photoacoustics 有权
    基于空气耦合光声学的医学筛查和诊断

    公开(公告)号:US08843190B2

    公开(公告)日:2014-09-23

    申请号:US13554985

    申请日:2012-07-20

    IPC分类号: A61B5/05 A61B5/00

    CPC分类号: A61B5/0095 A61B5/0507

    摘要: 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.

    摘要翻译: 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。