利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

66 条记录 (耗时 0.043 秒)

    Ultrasonic apparatus for thermotherapy with variable frequency for suppressing cavitation
    1.
    发明授权
    Ultrasonic apparatus for thermotherapy with variable frequency for suppressing cavitation 失效
    用于抑制空化的具有可变频率的热疗的超声波装置

    公开(公告)号：US5694936A

    公开(公告)日：1997-12-09

    申请号：US528263

    申请日：1995-09-14

    申请人： Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Mariko Shibata ,  Takuji Suzuki ,  Satoshi Aida ,  Shiroh Saitoh ,  Kazuya Okamoto

    发明人： Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Mariko Shibata ,  Takuji Suzuki ,  Satoshi Aida ,  Shiroh Saitoh ,  Kazuya Okamoto

    IPC分类号： A61B17/00 ,  A61B17/22 ,  A61N7/00 ,  A61N7/02

    CPC分类号： A61N7/02 ,  A61B2017/00176 ,  A61B2017/22009 ,  A61N2007/0065 ,  A61N2007/0073

    摘要： An ultrasonic diagnosis apparatus for raising tissue temperature for hypothermic treatments, including an ultrasonic source for generating an ultrasonic treatment wave and a driving means for driving the ultrasonic source such that a frequency of the ultrasonic treatment wave generated by the ultrasonic source changes with time. The frequency of the ultrasonic treatment wave is changed along the time axis. By this change in frequency, some bubbles formed by cavitation as a result of the ultrasonic treatment wave are divided, and some bubbles are collapsed and therefore eliminated. Side effect cavitation and spread of a thermal degeneration area is suppressed, and thermal degeneration can be accurately induced in a desired area, thereby realizing a reliable, safe ultrasonic thermotherapy. Since cavitation is positively suppressed, the total treatment period can be shortened because cavitation would otherwise interfere with and slow down the thermal degeneration process. Therefore, treatment throughput can be improved as compared with a case in which cavitation is left to naturally break and disappear.

    摘要翻译： 一种用于提高低温治疗的组织温度的超声波诊断装置，包括用于产生超声波处理波的超声波源和用于驱动超声波源的驱动装置，使得由超声波源产生的超声波处理波的频率随时间而变化。 超声波处理波的频率沿时间轴变化。 通过这种频率变化，由于超声波处理波而产生的由空穴形成的一些气泡被分割，并且一些气泡被折叠并因此被消除。 抑制热变性区域的副作用空化和扩散，可以在期望的区域中精确地诱导热变性，从而实现可靠，安全的超声波热疗。 由于气穴被积极地抑制，所以总处理时间可以缩短，因为空化会妨碍和减慢热变性过程。 因此，与空穴自然断裂和消失的情况相比，能够提高处理量。

    Ultrasonic wave medical treatment apparatus suitable for use under guidance of magnetic resonance imaging
    9.
    发明授权
    Ultrasonic wave medical treatment apparatus suitable for use under guidance of magnetic resonance imaging 失效
    超声波医疗器械适用于磁共振成像引导下使用

    公开(公告)号：US5897495A

    公开(公告)日：1999-04-27

    申请号：US727036

    申请日：1996-10-08

    申请人： Satoshi Aida ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Takuji Suzuki ,  Yasutoshi Ishihara ,  Kazuya Okamoto

    发明人： Satoshi Aida ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoshiharu Ishibashi ,  Takuji Suzuki ,  Yasutoshi Ishihara ,  Kazuya Okamoto

    IPC分类号： A61B5/055 ,  A61B18/00 ,  A61B19/00 ,  A61F7/00 ,  A61N7/02 ,  G01R33/28

    CPC分类号： A61N7/022 ,  A61N7/02 ,  G01R33/28 ,  A61B2090/374

    摘要： An ultrasonic wave medical treatment apparatus capable of preventing the displacement of the focal point of the ultrasonic waves from the treatment target portion within the patient, eliminating a need for re-positioning of the ultrasonic wave applicator with respect to the patient, and taking MR images to be utilized during the treatment at a high resolution. In this apparatus, the ultrasonic wave applicator can be integrally incorporated within a treatment table for carrying the patient into the MRI gantry for taking the MR images. The surface coil for taking the MR images can be provided on a surface film of a water bag in the ultrasonic wave applicator, or on a body cavity probe on which the ultrasonic transducer is also provided. The mixing rate of the coupling fluid can be adjusted, and the impedance matching between the ultrasonic transducer and the driving circuit can be maintained by minimizing the reflected electric power from the ultrasonic transducer.

    摘要翻译： 一种超声波医疗处理装置，其能够防止超声波的焦点从患者体内的治疗对象部位移位，消除了超声波施加器相对于患者重新定位的需要，并且取MR图像 以高分辨率在治疗期间使用。 在该装置中，超声波施加器可以整体地结合在处理台内，用于将病人携带到用于拍摄MR图像的MRI台架中。 用于拍摄MR图像的表面线圈可以设置在超声波施加器中的水袋的表面膜上，也可以设置在也设置有超声波换能器的体腔探针上。 可以调节耦合流体的混合速率，并且可以通过使来自超声换能器的反射电力最小化来维持超声换能器与驱动电路之间的阻抗匹配。