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1. 发明授权

US5197019A Method of measuring distance using ultrasonic waves 失效
标题翻译：使用超声波测量距离的方法
公开(公告)号：US5197019A
公开(公告)日：1993-03-23
申请号：US554420
申请日：1990-07-19
申请人： Chantal Delon-Martin , marcel Arditi , Pierre-Andre Farine , Jean-Jacques Meister , Yanik Tardy
发明人： Chantal Delon-Martin , marcel Arditi , Pierre-Andre Farine , Jean-Jacques Meister , Yanik Tardy
IPC分类号： A61B8/08 , G01B17/02
CPC分类号： A61B8/0858 , G01B17/02
摘要： A method for measuring the distance e separating two faces (3, 4) of an object (1) employs the ultrasonic wave diffused back by said faces and received by a sensor (6). Following digitalization (11), the temporal signal is transformed (12) into a frequency spectrum. The modulus of the frequency spectrum is established (13) then the logarithmic derivative thereof is calculated (15) from whence there results a useful signal including a periodic signal onto which a linear signal is superposed. Following suppression (14, 16) of the linear signal the useful signal is applied (17) to a frequency window in order to eliminate the noise therefrom. The signal thus obtained is inversely transformed (18) to obtain a signal the amplitude of which is a function of the time and the envelope of this latter signal is determined (19). After having determined the temporal spread .DELTA.t separating the time origin from the envelope peak showing the greatest amplitude, the distance e is calculated from the relation e=c.multidot..DELTA.t/2, c representing the propagation velocity of the ultrasonic wave. The method may be employed for the non-invasive measurement of the thickness or diameter of an artery or indeed for the measurement of the thickness of thin layers.
摘要翻译：用于测量分离物体（1）的两个面（3,4）的距离e的方法采用由所述面扩散并由传感器（6）接收的超声波。在数字化（11）之后，时间信号被变换（12）成频谱。建立频谱的模数（13），然后计算其对数导数（15），从而产生包括重叠线性信号的周期信号的有用信号。在线性信号的抑制（14,16）之后，将有用信号（17）施加到频率窗口以消除噪声。如此获得的信号被逆变换（18）以获得其幅度是时间的函数的信号，并且确定后一信号的包络（19）。在确定了显示最大幅度的包络峰值的时间原点的时间扩展DELTA t之后，根据表示超声波的传播速度的关系e = c×DELTA t / 2计算距离e。该方法可用于非侵入性测量动脉的厚度或直径，或实际上用于测量薄层的厚度。

2. 发明授权

US5152297A Method and apparatus for establishing the pressure-diameter relationship of an artery by non-invasive measures 失效
标题翻译：通过非入侵措施建立动态压力关系的方法和装置
公开(公告)号：US5152297A
公开(公告)日：1992-10-06
申请号：US489034
申请日：1990-03-06
申请人： Jean-Jacques Meister , Yanik Tardy
发明人： Jean-Jacques Meister , Yanik Tardy
IPC分类号： A61B5/02 , A61B5/022
CPC分类号： A61B5/022
摘要： This method for establishing the pressure-diameter relationship of an artery employs the measurement results from a non-invasive sensor (3) of the artery diameter, for instance of the humeral artery, and from a non-invasive sensor (4) of the blood pressure applied for instance to the end of a finger. The measurement locations being separated by a distance .DELTA.x, the method provides for the correction of the pressure measurements as if such measurements had been effected at the location of the diameter measurements. The method further provides a correction which takes into account the mechanical properties of the artery, defined by the parameters .alpha., .beta., .gamma., . . . and which are calculated, if necessary by successive iterations, until the pressure-diameter curve appears free from all measurement anomalies (hysteresis). The pressure-diameter relationship enables the calculation of the mechanical properties of the artery, in particular by compliance curves and the propagation velocity as a function of the pressure.
摘要翻译：用于建立动脉的压力 - 直径关系的方法使用来自例如肱动脉的动脉直径的非侵入式传感器（3）和来自血液的非侵入性传感器（4）的测量结果例如施加到手指末端的压力。测量位置被隔开一段距离DELTA x，该方法提供了压力测量的校正，就好像在直径测量的位置已经进行了这样的测量。该方法进一步提供了校正，其考虑了由参数α，β，γ定义的动脉的机械性质。。。如果需要，通过连续迭代计算，直到压力 - 直径曲线看起来没有所有测量异常（滞后）。压力 - 直径关系使得能够计算动脉的机械性质，特别是通过顺应性曲线和传播速度作为压力的函数。

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