公开(公告)号：EP2524651A1

公开(公告)日：2012-11-21

申请号：EP11761915.5

申请日：2011-04-02

申请人： CHONGQING HAIFU(HIFU)TECHNOLOGY CO., LTD

发明人： WANG, Zhibiao ,  WANG, Hua ,  ZENG, Deping ,  ZHAO, Chunliang ,  YE, Fangwei ,  Li, Sanyong ,  XU, Guihua ,  GONG, Xiaobo

IPC分类号： A61B8/00 ,  A61N7/00 ,  G10K11/32

CPC分类号： A61N7/02 ,  A61B8/4455 ,  A61N2007/006 ,  A61N2007/0069 ,  A61N2007/0078 ,  B06B1/0637 ,  G10K11/32

摘要： An ultrasonic transducer is disclosed, which includes one or a plurality of ultrasonic emitting units. Wavefronts of the ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are sphere surfaces with uniform radius, and the one or the plurality of ultrasonic emitting units can reflect ultrasound. The one ultrasonic emitting unit is configured to form a spherical resonant cavity, or the plurality of ultrasonic emitting units are configured to form a spherical resonant cavity collectively. An internal cavity of the spherical resonant cavity has a spherical shell shape or a cross-sectional spherical shell shape with a spherical center therein. The ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are focused on an area in which the spherical center of the spherical resonant cavity is located. The ultrasonic transducer not only can be provided with a large ultrasonic emitting area and a great focusing gain that render the energy of the ultrasonic focus enhanced dramatically, but also can be free from the influence of work frequency of an ultrasonic source.

摘要翻译： 公开了一种超声波换能器，其包括一个或多个超声波发射单元。 由一个或多个超声波发射单元发射的超声波的波前是具有均匀半径的球面，并且一个或多个超声波发射单元可以反射超声波。 一个超声波发射单元被配置为形成球形谐振腔，或者多个超声波发射单元被配置为共同形成球形谐振腔。 球形谐振腔的内腔具有球形壳体形状或其中具有球形中心的截面球形壳体形状。 由一个或多个超声波发射单元发射的超声波聚焦在球形谐振腔的球形中心所在的区域上。 超声波换能器不仅可以提供大的超声波发射区域和大的聚焦增益，使得超声波聚焦的能量显着增强，而且可以不受超声波源的工作频率的影响。