公开(公告)号：US20100191119A1

公开(公告)日：2010-07-29

申请号：US12362011

申请日：2009-01-29

Applicant: Srikanth Muthya ,  Ashit Madhusudan Pandit

Inventor： Srikanth Muthya ,  Ashit Madhusudan Pandit

IPC: A61B8/00 ,  H04R31/00

CPC classification number: A61B8/02 ,  A61B8/0866 ,  A61B8/4227 ,  A61B8/4281 ,  Y10T29/49005

Abstract: An ultrasound transducer and method of producing same takes advantage of the properties of two differing materials to optimize the transducer. More specifically, the transducer has one or more emitters made of lead zirconate titanate PZT) crystals that are affixed to a wearable material made of polyvinylildene fluoride (PVDF). As such, the PZT crystals are an effective emitter of ultrasound energy into an object and/or area of interest, such as a patient for maternal and/or fetal care monitoring, while the PVDF material has a low impedance and therefore effectively receives the ultrasound energy returned from the object and/or area of interest. The PVDF material comprises a wearable form factor, whereby the transducer utilizes different properties of different materials and combines them into a common transducer.

Abstract translation: 超声换能器及其制造方法利用两种不同材料的特性来优化换能器。 更具体地，换能器具有一个或多个由钛酸铅钛酸铅PZT制成的发射体，其被固定在由聚偏氟乙烯（PVDF）制成的耐磨材料上。 因此，PZT晶体是超声能量有效发射到目标和/或感兴趣区域，例如用于母体和/或胎儿监护的患者，而PVDF材料具有低阻抗并因此有效地接收超声波 从物体和/或感兴趣区域返回的能量。 PVDF材料包括可佩戴的外形因素，由此换能器利用不同材料的不同特性并将它们组合成共同的换能器。

公开(公告)号：US20110160591A1

公开(公告)日：2011-06-30

申请号：US12649735

申请日：2009-12-30

Applicant: Lowell Smith ,  Mirsaid Seyed-Bolorforosh ,  Kai Thomenius ,  David Mills ,  Scott D. Cogan ,  Ashit Pandit ,  Srikanth Muthya

Inventor： Lowell Smith ,  Mirsaid Seyed-Bolorforosh ,  Kai Thomenius ,  David Mills ,  Scott D. Cogan ,  Ashit Pandit ,  Srikanth Muthya

IPC: A61B8/00

CPC classification number: A61B8/0866 ,  A61B5/02411 ,  A61B8/02 ,  A61B8/4227 ,  A61B8/4472

Abstract: A continuous, non-invasive fetal heart rate measurement is produced using an ultrasound probe positioned on the abdomen of the mother. The ultrasound probe includes a plurality of ultrasound transducers that are positioned within a housing having a transmission surface. The transmission surface is configured to defocus the individual ultrasound beams created by the plurality of ultrasound transducers. The transmission surface defocuses the ultrasound beam and creates a wider area of coverage for the ultrasound probe. The controller contained within the heart rate monitor selectively activates different combinations of the plurality of ultrasound transducers to reduce the signal-to-noise ratio while allowing the ultrasound probe to locate the fetal heart beat and subsequently increase the signal-to-noise ratio during continuous heart rate monitoring.

Abstract translation: 使用定位在母亲腹部的超声探头产生连续的非侵入性胎儿心率测量。 超声波探头包括多个超声换能器，其位于具有透射表面的壳体内。 传输表面被配置为使由多个超声换能器产生的各个超声波束聚焦。 传输表面使超声波束聚焦，并为超声波探头创建更广泛的覆盖区域。 包含在心率监测器内的控制器选择性地激活多个超声换能器的不同组合以降低信噪比，同时允许超声探头定位胎儿心跳，并且随后在连续期间增加信噪比 心率监测。