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1. 发明授权

US11007686B2 Ultrasound transducer matching layers and method of manufacturing 有权
公开(公告)号：US11007686B2
公开(公告)日：2021-05-18
申请号：US14872931
申请日：2015-10-01
申请人： Bjorn A. J. Angelsen
发明人： Bjorn A. J. Angelsen
IPC分类号： B06B1/02 , B29C43/00 , G10K11/02 , B06B1/06 , B29K103/00 , B29L31/34
摘要： An acoustic matching layer where the thickness is defined by a single layer of defined mono-disperse particles. The layer comprises a polymer base in which mono-disperse particles are embedded. The mono-disperse particles can be coated with a solid material that participates in the definition of the acoustic impedance of the layer. The polymer base can include smaller solid particles that participates in the definition of the acoustic impedance of the layer. The invention also provides a method of manufacturing.

2. 发明授权

US10310061B2 Ultrasound transducer and method of manufacturing 有权
公开(公告)号：US10310061B2
公开(公告)日：2019-06-04
申请号：US15191246
申请日：2016-06-23
申请人： Bjorn A. J. Angelsen
发明人： Bjorn A. J. Angelsen
IPC分类号： G01S7/521 , G10K11/02 , B32B5/16 , B32B15/16 , B06B1/02
摘要： An ultrasound transducer array with at least one composite material layer. The layer having a polymer base in which polymer particles are embedded. The polymer particles are coated with a material that has a thermal conductivity that is higher than the thermal conductivity of the polymer base and the polymer particles.

3. 发明申请

US20090039738A1 High frequency ultrasound transducers based on ceramic films 审中-公开
标题翻译：基于陶瓷膜的高频超声换能器
公开(公告)号：US20090039738A1
公开(公告)日：2009-02-12
申请号：US12156616
申请日：2008-06-03
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
IPC分类号： H01L41/047
CPC分类号： B06B1/0692 , H01L2224/16225 , H01L2224/48091 , H01L2224/73253 , H01L2224/73265 , H01L2924/00014
摘要： A design and a manufacturing method of ultrasound transducers based on films of ferro-electric ceramic material is presented, the transducers being particularly useful for operating at frequencies above 10 MHz. The manufacturing technique can involve tape-casting of the ceramic films, deposition of the ceramic films onto a substrate with thick film printing, sol-gel, or other deposition techniques, where manufacturing methods for load matching layers and composite ceramic layers are described. The designs also involve acoustic load matching layers that provide particularly wide bandwidth of the transducers, and also multi-band operation of the transducers. The basic designs can be used for elements in a transducer array, that provides the frequency characteristics of the single element transducers, for array steering of the focus and possibly also direction of a pulsed ultrasound beam at high frequencies and multi-band frequencies.
摘要翻译：提出了一种基于铁电陶瓷材料薄膜的超声换能器的设计和制造方法，该换能器对于在10MHz以上的频率下工作特别有用。制造技术可以涉及陶瓷膜的流延，用厚膜印刷，溶胶 - 凝胶或其他沉积技术将陶瓷膜沉积到基底上，其中描述了负载匹配层和复合陶瓷层的制造方法。这些设计还涉及提供特别宽的传感器带宽的声学负载匹配层，以及换能器的多频带操作。基本设计可用于传感器阵列中的元件，其提供单个元件换能器的频率特性，用于在高频和多频带频率下的聚焦的阵列转向和可能的脉冲超声波束的方向。

4. 发明授权

US06761692B2 High frequency and multi frequency band ultrasound transducers based on ceramic films 有权
标题翻译：基于陶瓷膜的高频和多频带超声换能器
公开(公告)号：US06761692B2
公开(公告)日：2004-07-13
申请号：US10180990
申请日：2002-06-24
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen , Jarle Østgård
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen , Jarle Østgård
IPC分类号： A61B800
CPC分类号： B06B1/0688
摘要： A design and a manufacturing method of ultrasound transducers based on films of ferro-electric ceramic material is presented, the transducers being particularly useful for operating at frequencies above 10 MHz. The designs also involve acoustic load matching layers that provides particularly wide bandwidth of the transducers, and also multiple electric port transducers using multiple piezoelectric layers, for multi-band operation of the transducers over an even wider band of frequencies that covers ˜4 harmonics of a fundamental band. A transceiver drive system for the multi-port transducers that provides simple selection of the frequency bands of transmitted pulses as well as transmission of multi-band pulses, and reception of scattered signals in multiple frequency bands, is presented. The basic designs can be used for elements in a transducer array, that provides all the features of the single element transducer for array steering of the focus and possibly also direction of a pulsed ultrasound beam at high frequencies and multi-band frequencies. The manufacturing technique can involve tape-casting of the ceramic films, deposition of the ceramic films onto a substrate with thick film printing, sol-gel, or other deposition techniques, where manufacturing methods for load matching layers and composite ceramic layers are described.
摘要翻译：提出了一种基于铁电陶瓷材料薄膜的超声换能器的设计和制造方法，该换能器对于在10MHz以上的频率下工作特别有用。这些设计还涉及提供换能器特别宽的带宽的声学负载匹配层，以及使用多个压电层的多个电气端口换能器，用于在覆盖〜4个谐波的更宽频带上的换能器的多频带操作基本乐队。提供了一种用于多端口换能器的收发器驱动系统，其提供了传输脉冲的频带的简单选择以及多频带脉冲的传输以及在多个频带中的散射信号的接收。基本设计可用于传感器阵列中的元件，其提供单元件传感器的所有特征，用于在高频和多频带频率下的聚焦以及可能的脉冲超声波束的方向。制造技术可以涉及陶瓷膜的流延，用厚膜印刷，溶胶 - 凝胶或其他沉积技术将陶瓷膜沉积到基底上，其中描述了负载匹配层和复合陶瓷层的制造方法。

5. 发明授权

US06485423B2 Correction of phasefront aberrations and pulse reverberations in medical ultrasound imaging 有权
标题翻译：医学超声成像中校正相位像差和脉冲混响
公开(公告)号：US06485423B2
公开(公告)日：2002-11-26
申请号：US09773335
申请日：2001-01-31
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： A61B814
CPC分类号： G01S15/8925 , A61B8/00 , A61B8/0833 , A61B8/481 , G01S7/52038 , G01S7/52049 , G01S7/5205
摘要： A method of correcting for phasefront aberrations in ultrasound imaging uses highly spaced apart point scatterers artificially placed in the tissue being imaged. The point scatterers reflect the transmitted sound and are individually differentiated to provide singular reference points for correction of signals reflected from the surrounding tissue. The differentiation is performed by comparison of the third or fourth harmonic frequencies of the reflected signals. To ensure the necessary high dispersal of the point scatterers, high amplitude pulses of the transmitted signal destroy point scatterers in selected image regions. In an alternate embodiment, correction is performed by stochastic analysis of signals reflected from the highly dispersed point scatterers. A reference signal is compared to the second harmonic of the reflected signal to reduce noise.
摘要翻译：用于校正超声成像中的相位像差的方法使用人为放置在被成像的组织中的高度间隔开的点散射体。点散射体反射发射的声音，并被单独区分，以提供用于校正从周围组织反射的信号的奇异参考点。通过比较反射信号的第三或第四谐波频率来进行微分。为了确保点散射体的必要的高散射，所传输的信号的高幅度脉冲在所选择的图像区域中破坏点散射体。在替代实施例中，通过对从高度分散的点散射体反射的信号进行随机分析来执行校正。将参考信号与反射信号的二次谐波进行比较，以减少噪声。

6. 发明授权

US4757818A Ultrasonic transducer probe with linear motion drive mechanism 失效
标题翻译：超声波换能器探头具有直线运动驱动机构
公开(公告)号：US4757818A
公开(公告)日：1988-07-19
申请号：US835607
申请日：1986-03-03
申请人： Bjorn A. J. Angelsen
发明人： Bjorn A. J. Angelsen
IPC分类号： A61B8/06 , G01S7/52 , G01S15/89 , G10K11/35 , A61B10/00
CPC分类号： G01S15/8947 , G01S7/52063 , G01S7/52085 , G10K11/355
摘要： An ultrasonic transducer probe having a mechanically steerable acoustic element includes a linear motor having a stationary magnet assembly and a coil bidirectionally linearly movable with respect to the magnet assembly. A mechanical arrangement formed of a pair of spaced apart, rotatably mounted pulleys and a flexible belt connecting the pulleys couples the coil and an ultrasonic transducer or acoustic element. The transducer element is mounted for rotation with at least one of the pulleys so that linear motion of the motor coil is converted to rotative motion of the transducer whereby the transducer and the ultrasonic beam it emits is caused to sweep through a selected angular sector. A position sensor formed of a supplemental stationary magnetic material and a position coil mounted for movement with the motor coil is utilized for detecting the linear position of the coil and, correspondingly, the angular orientation or position of the transducer element.
摘要翻译：具有机械转向声学元件的超声换能器探头包括具有固定磁体组件和相对于磁体组件双向可线性移动的线圈的线性电动机。由一对间隔开的可旋转地安装的滑轮和连接滑轮的柔性带形成的机械装置将线圈和超声换能器或声学元件相耦合。换能器元件安装成与至少一个滑轮一起旋转，使得马达线圈的线性运动被转换为换能器的旋转运动，从而使其发射的换能器及其超声波束扫过选定的角度扇区。由补充的固定磁性材料形成的位置传感器和安装成与电动机线圈一起运动的位置线圈被用于检测线圈的线性位置，并且相应地检测换能器元件的角度取向或位置。

7. 发明授权

US06622562B2 Multi pre-focused annular array for high resolution ultrasound imaging 有权
标题翻译：用于高分辨率超声成像的多预聚焦环形阵列
公开(公告)号：US06622562B2
公开(公告)日：2003-09-23
申请号：US10041309
申请日：2002-01-07
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： C01N924
CPC分类号： B06B1/0625
摘要： An annular ultrasound bulk wave transducer array for electronic depth steering of symmetric focus from a near focus Fn to a far focus Ff includes elements that are divided into k groups with different fixed prefocusing. The central group participates in beam forming from Fn to Ff, the next outer group in beam forming from Fn1>Fn to Ff, and the kth outer group in beam forming from Fnk>Fn,k−1 to Ff. The fixed focus for the kth group is selected at Fk between Fnk and Ff. In this manner, beam formation close to Fn is performed only by the central group. By steering the focus outward from Fn, the focal diameter increases and, at a depth where the focal diameter exceeds a limit, the next outer group of elements is included in beam formation. This increase in aperture area reduces the focal diameter with subsequent increases in diameter as the focus is further steered toward Ff. In the same manner, the kth group of elements is included in beam formation for steered foci deeper than Fnk, presenting a growing aperture that enables maintenance of the diameter below limits with a low total number of elements and avoids impractically small widths of the annular elements. The elements may also be subdivided in the angular direction, allowing for phase aberration correction.
摘要翻译：用于从近焦点Fn到远焦点Ff的对称焦点的电子深度转向的环形超声体波换能器阵列包括被分成具有不同固定预聚焦的k个组的元件。中心组参与从Fn到Ff的波束形成，Fn1> Fn到Ff的波束形成中的下一个外部组，以及从Fnk> Fn，k-1到Ff的波束形成中的第k个外部组。在Fk和Ff之间选择第k组的固定焦点。以这种方式，靠近Fn的波束形成仅由中心组执行。通过从Fn向外转向焦点，焦点直径增加，并且在焦点直径超过极限的深度处，下一个外部元件组被包括在波束形成中。当焦点进一步转向Ff时，孔径面积的这种增加减小焦距直径随后的直径增加。以相同的方式，第k组元件被包括在比Fnk更深的转向焦点的束形成中，呈现出增长的孔径，其能够以较低的元件数保持直径低于极限，并避免不切实际的小的环形元件的宽度。这些元件还可以在角度方向上细分，允许进行相位差校正。

8. 发明授权

US4972839A Miniaturized mechanically-steerable ultrasonic probe 失效
标题翻译：小型化机械导向超声波探头
公开(公告)号：US4972839A
公开(公告)日：1990-11-27
申请号：US288690
申请日：1988-12-22
申请人： Bjorn A. J. Angelsen
发明人： Bjorn A. J. Angelsen
IPC分类号： G01N29/24 , A61B8/12 , G10K11/35
CPC分类号： A61B5/6826 , A61B5/416 , A61B5/6838 , A61B8/12 , A61B8/42 , A61B8/445 , G10K11/355
摘要： A miniaturized ultrasonic probe comprises a housing encasing a motor, an ultrasonic transducer mounted for controlled rotation on the motor shaft, and an angular position sensor connected to the shaft. The housing has a radiating dome about the transducer and is sealed and wholly filled with an acoustically-transparent fluid. The dual frequency transducer operatively emits either of two ultrasonic frequency beams from opposed faces of a sandwich-like construction, and the position sensor is implemented using a low mass variable-inductor arrangement. The resulting probe attains unusually rapid accelerations and changes in beam direction with highly accurate control of transducer orientation, all in a miniaturized construction particularly well adapted for operative insertion in a human or animal body cavity or surgical site.

9. 发明授权

US5195519A Miniaturized mechanically-steerable ultrasonic probe 失效
标题翻译：小型化机械导向超声波探头
公开(公告)号：US5195519A
公开(公告)日：1993-03-23
申请号：US615213
申请日：1990-11-19
申请人： Bjorn A. J. Angelsen
发明人： Bjorn A. J. Angelsen
IPC分类号： A61B8/00 , A61B8/06 , A61B8/12 , G10K11/35
CPC分类号： A61B8/4461 , A61B5/416 , A61B5/6826 , A61B5/6838 , A61B8/06 , A61B8/12 , A61B8/42 , G10K11/355 , A61B8/4281 , A61B8/445
摘要： A miniaturized ultrasonic probe includes a housing encasing a motor, an ultrasonic transducer mounted for controlled rotation on the motor shaft, and an angular position sensor connected to the shaft. The housing has a radiating dome about the transducer and is sealed and wholly filled with an acoustically-transparent fluid. The transducer may be specially configured for use in continuous wave Doppler measurements of blood flow velocities and, for this purpose, may include a first portion for continuously transmitting an ultrasound beam and a second portion for continuously receiving backscattered ultrasound reflections of the transmitted ultrasound beam. The position sensor is implemented using a low mass variable-inductor arrangement. The resulting probe attains unusually rapid accelerations and changes in beam direction with highly accurate control of transducer orientation in a notably and advantageously miniaturized construction.
摘要翻译：一种小型化的超声波探头包括一个包围马达的壳体，一个安装在马达轴上用于受控旋转的超声波换能器，以及连接到该轴的角度位置传感器。壳体具有围绕换能器的辐射圆顶，并且被密封并完全填充有声透明流体。换能器可以被特别配置用于血流速度的连续波多普勒测量，并且为此，可以包括用于连续传输超声波束的第一部分和用于连续接收所发送的超声波束的反向散射超声波反射的第二部分。使用低质量可变电感器布置来实现位置传感器。所得到的探针通过在显着且有利的小型化结构中的传感器取向的高精度控制而获得非常快速的加速度和波束方向的变化。

10. 发明授权

US4934373A Method and apparatus for synthesizing a continuous estimate signal from segments of a Gaussian signal provided by ultra sonic doppler measurement on a fluid flow 失效
标题翻译：用于通过超音速多普勒测量在流体流上提供的高斯信号的段来合成连续估计信号的方法和装置
公开(公告)号：US4934373A
公开(公告)日：1990-06-19
申请号：US213474
申请日：1988-06-30
申请人： Bjorn A. J. Angelsen , Kjell Kristoffersen
发明人： Bjorn A. J. Angelsen , Kjell Kristoffersen
IPC分类号： A61B8/06 , A61B5/02 , A61B8/00 , G01F1/66 , G01P5/24 , G01S15/58
CPC分类号： G01S15/586 , G01P5/241
摘要： Method and apparatus for synthesizing a continuous estimate signal of a Gaussian signal resulting from ultrasonic Doppler measurement on a fluid flow, from existing segments of the Gaussian signal. The segment signals are first stored and there is at the same time calculated a characteristic frequency parameter for each segment. The frequency parameter is combined with the first stored segment signal for transposition thereof to a base-band at or about the zero frequency point, and this base-band signal is used to generate coefficients in a controlled filter device which on the basis of a broad-band input signal gives a synthesized filter output signal which is a substantially Gaussian signal. The filter output signal is multiplied by a weighting or window function for smoothing the transitions between successive segments. Parallel to the above signal processing there is for each segment of the initial Gaussian signal on the basis of said frequency parameter, formed a parameter at each instant which is an estimate of the frequency parameter of the initial signal between the segments, in order to thereby represent the comparatively quick variations in the location of the frequency spectrum of the initial signal. The latter estimated frequency parameter is combined with the smoothed filter output signal so that this is transposed back to the frequency range of the initial signal and thereby constitutes the synthesized continuous estimate signal. The invention primarily is intended for use with ultrasonic blood flow measurement in living biological structures. This method and apparatus may be incorporated into a complete system for investigating circulatory systems, particularly in hospitals.
摘要翻译：用于从高斯信号的现有段合成从流体流上的超声波多普勒测量得到的高斯信号的连续估计信号的方法和装置。首先存储段信号，并且同时计算每个段的特征频率参数。频率参数与第一个存储的段信号组合，用于将其转置到零频点处或其周围的基带，并且该基带信号用于在受控滤波器装置中产生系数，该受控滤波器装置基于宽带输入信号给出一个基本为高斯信号的合成滤波器输出信号。滤波器输出信号乘以加权或窗口函数，用于平滑连续段之间的转换。与上述信号处理并行，基于所述频率参数对于初始高斯信号的每个段，在每个时刻形成参数，该参数是段之间的初始信号的频率参数的估计，从而表示初始信号的频谱位置相对较快的变化。后者的估计频率参数与平滑的滤波器输出信号组合，使得它被转置回到初始信号的频率范围，从而构成合成的连续估计信号。本发明主要用于活体生物结构中超声波血流测量。该方法和装置可以并入到用于调查循环系统的完整系统中，特别是在医院中。

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