公开(公告)号：WO1997034288A1

公开(公告)日：1997-09-18

申请号：PCT/US1997003225

申请日：1997-02-28

Applicant: HEWLETT-PACKARD COMPANY

Inventor： HEWLETT-PACKARD COMPANY ,  DIAS, J., Fleming ,  MELTON, Hewlett, E., Jr.

IPC: G10K11/24

CPC classification number: A61B8/12 ,  A61B8/445 ,  A61B8/4461 ,  A61B2017/22017 ,  G10K11/24

Abstract: A direct contact scanner (101) uses a fiber acoustic waveguide (107, 141) to convey ultrasound from an ultrasound transducer (117) to a direct contact area (122). The waveguide extends from a main body (105) of the scanner into an oblong nose (109), and terminates in a deflector (149). To minimize thickness of the nose, the waveguide and deflector are rotated about an ultrasound transmission axis (119) of the waveguide, enabling the scanner to be used in a variety of situations where quarters are cramped. A coupling fluid (111) conveys ultrasound between the deflector (149) and a radome (113), which directly contacts the object (103) to be scanned. Using the waveguide, an ultrasound transducer and supporting electronics (118) may be distanced from the direct contact area (122) and separated from the fluid (111), thereby insulating the fluid from possible electronic leakage currents and heat.

Abstract translation: 直接接触扫描仪（101）使用纤维声波导（107,141）将超声波从超声换能器（117）传送到直接接触区域（122）。 波导从扫描仪的主体（105）延伸成长方形的鼻子（109），并终止在偏转器（149）中。 为了最小化鼻子的厚度，波导和偏转器围绕波导的超声波传播轴线（119）旋转，使得扫描仪能够在季节狭窄的各种情况下使用。 耦合流体（111）在偏转器（149）和直接接触待扫描对象（103）的天线罩（113）之间传送超声波。 使用波导，超声换能器和支撑电子器件（118）可以与直接接触区域（122）分开并与流体（111）分离，从而将流体与可能的电子泄漏电流和热量隔离。

公开(公告)号：WO1997032298A1

公开(公告)日：1997-09-04

申请号：PCT/US1997003199

申请日：1997-02-28

Applicant: HEWLETT-PACKARD COMPANY

Inventor： HEWLETT-PACKARD COMPANY ,  DIAS, J., Fleming

IPC: G10K11/24

CPC classification number: G10K11/24

Abstract: A system and method for coupling acoustic energy within a waveguide provides highly efficient and sensitive acoustic energy generation and detection. In particular, an ultrasound angioplasty system is described which makes use of an end-fire array of ring-shaped shear wave transducers to produce highly directionalized sound within an acoustic waveguide. The transducers can be made circularly symmetric, and may be composed of multiple segments for generating sound waves in independent x and y spatial modes within the acoustic waveguide. Each ring transducer is optimally spaced 1/2 lambda L from its neighbour transducers, such that alternate transducers transduce 180-degrees out of phase, and may have their electrical end inverted for common drive, or for summing of transducer electrical outputs when the array is used as a detector. The phased array may also be used in a resonant acoustic energy system used to detect pressure variations or reflections from a substance, for example, for detecting the progress of chemical reactions, liquid level sensing, etc., imaging, or in various other ultrasound applications.

Abstract translation: 用于耦合波导内的声能的系统和方法提供高效和灵敏的声能产生和检测。 特别地，描述了使用环形剪切波换能器的端射阵列在声波导内产生高度方向化的声音的超声波血管成形术系统。 换能器可以是圆形对称的，并且可以由用于在声波导内的独立的x和y空间模式中产生声波的多个段组成。 每个环形换能器与其相邻的换能器最佳地间隔1/2λL，使得替代的换能器转换180度相位，并且可以使它们的电端反转用于公共驱动，或者当阵列为 用作检测器。 相控阵列也可以用在用于检测物质的压力变化或反射的共振声能系统中，例如用于检测化学反应进程，液位感测等，成像或各种其他超声应用 。