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    • 2. 发明申请
    • MULTI-ELEMENT PIEZOELECTRIC TRANSDUCERS
    • 多元素压电传感器
    • WO2009112995A2
    • 2009-09-17
    • PCT/IB2009/050953
    • 2009-03-08
    • ULTRASHAPE LTD.NUDELMAN, IgorRYBYANETS, Andrey
    • NUDELMAN, IgorRYBYANETS, Andrey
    • H01L41/04H01L41/047H01L41/22
    • B06B1/0637Y10T29/42
    • A piezoelectric transducer formed of a body of piezoelectric material having first and second opposed sides and first and second electrically conductive layers on the first and second sides respectively of the piezoelectric body, wherein the piezoelectric body and the electrically conductive layers are so constructed that they form a plurality of separate adjacent series- connected transducer elements. A method of manufacturing such a transducer is also disclosed. The piezoelectric body may have a substantially uniform direction of polarization, or alternating zones of opposite polarization. The conductive layers may be continuous or discontinuous, together forming isolated electrode pairs to define the individual transducer elements. The elements can be hard wired or connected through a switching circuit to display either circumferential or axial or other ultrasonic focal patterns, and may be connected in a parallel, rather than a series configuration. When connected in series, advantageously higher impedance can be obtained, compared to the parallel configuration.
    • 一种由压电材料体形成的压电换能器,其具有在压电体的第一和第二侧上具有第一和第二相对侧以及第一和第二导电层的压电体,其中压电体和导电层的构造使得它们形成 多个单独的相邻的串联连接的换能器元件。 还公开了制造这种换能器的方法。 压电体可以具有基本上均匀的偏振方向,或具有相反极化的交替区域。 导电层可以是连续的或不连续的,一起形成隔离的电极对以限定各个换能器元件。 元件可以通过开关电路进行硬连线或连接,以显示圆周或轴向或其他超声波焦点图案,并且可以以并联而不是串联配置连接。 当串联连接时,与并行配置相比,可以获得更高的阻抗。
    • 10. 发明申请
    • SYNCHRONOUSLY PUMPED ULTRASONIC WAVES AND SHEAR WAVE GENERATION BY SAME
    • 同步泵浦超声波和同步产生的剪切波
    • WO2012038891A1
    • 2012-03-29
    • PCT/IB2011/054114
    • 2011-09-20
    • WAVOMED LTD.RYBYANETS, Andrey
    • RYBYANETS, Andrey
    • A61N7/02A61N7/00
    • A61B8/00A61B8/485A61N1/403A61N7/00A61N2007/0008A61N2007/0039A61N2007/0078
    • Methods and apparatus for producing synchronously pumped (SP) ultrasonic bursts which can be used to create ultrasound radiation pressure. The emission of an ultrasonic burst by a piezoelement is synchronized with the reflection of another ultrasonic burst by the same piezoelement to create a combined ultrasonic burst with increased amplitude. Repeated synchronized emissions and reflections of ultrasonic bursts lead to resonant growth of a burst amplitude to equal that of a standing wave, but without formation of a nodal structure. In some embodiments, the SP ultrasonic bursts generate shear waves. In some embodiments, the shear waves are resonant shear waves. In some embodiments, the shear waves are formed in a supersonic regime. Shear waves thus formed can be used for various treatments of biological tissues, with or without RF heating.
    • 用于产生可用于产生超声辐射压力的同步泵浦(SP)超声波脉冲串的方法和装置。 通过压电元件的超声波脉冲串的发射与通过相同压电元件的另一个超声波脉冲串的反射同步,以产生具有增加的振幅的组合超声波脉冲串。 重复的同步发射和超声波脉冲的反射导致突发振幅的共振生长等于驻波的振幅,但不形成节点结构。 在一些实施例中,SP超声波脉冲串产生剪切波。 在一些实施例中,剪切波是谐振剪切波。 在一些实施例中,剪切波以超音速状态形成。 如此形成的剪切波可用于生物组织的各种处理,具有或不具有RF加热。