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    • 73. 发明申请
    • METHOD AND APPARATUS FOR MONITORING INTRA OCULAR AND INTRA CRANIAL PRESSURE
    • 用于监测眼内压和内压的方法和装置
    • WO2005016121A2
    • 2005-02-24
    • PCT/US2004025185
    • 2004-08-06
    • UNIV VIRGINIA COMMONWEALTHLENHARDT MARTIN LWARD KEVIN
    • LENHARDT MARTIN LWARD KEVIN
    • A61B20060101A61B3/16A61B5/00A61B5/03A61B8/08A61B
    • A61B5/031A61B5/6814A61B5/6821A61B8/0808A61B8/4227
    • A method and apparatus for measuring acoustic energy applied to the head to detect increases in intra cranial pressure. Acoustic eye patches are applied to a patient's eye or eyelid, and an ultrasonic sweep generator applies an acoustic signal across the patient's skull, the signal being swept across a predetermined range. The eye patches have piezoelectric film sensors for measuring the acoustic signal. In one embodiment the predetermined range is in the ultrasonic band and an analyzer determines from the output of the sensors a resonant frequency and a damping of acoustic amplitude at said resonant frequency, there being a correlation between said damping and intra cranial pressure. In another embodiment the predetermined range includes a range less than 20 kHz and the analyzer determines retinal artery pulsations, with pressure being applied to the eye until the pulsations disappear, such pressure being a measure of intra cranial pressure.
    • 一种用于测量施加于头部的声能以检测颅内压升高的方法和装置。 声眼补片应用于患者的眼睛或眼睑,超声波扫描发生器在患者的颅骨上施加声学信号,该信号被扫过预定范围。 眼贴具有用于测量声信号的压电膜传感器。 在一个实施例中,预定范围在超声频带中,分析器根据传感器的输出确定谐振频率和在所述共振频率处的声振幅的阻尼,所述阻尼和颅内压之间存在相关性。 在另一个实施例中,预定范围包括小于20kHz的范围,并且分析仪确定视网膜动脉脉动,其中施加压力施加到眼睛直到脉动消失,这种压力是颅内压的量度。