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    • 3. 发明授权
    • Apparatus and method for reliably detecting a depolarization activation
wave of the heart and atrial defibrillator utilizing same
    • 利用其可靠地检测心脏和心房除颤器的去极化激活波的装置和方法
    • US5348021A
    • 1994-09-20
    • US861184
    • 1992-03-31
    • John M. AdamsClifton A. AlfernessKenneth R. Infinger
    • John M. AdamsClifton A. AlfernessKenneth R. Infinger
    • A61N1/39A61B5/046
    • A61N1/3956A61N1/395A61N1/3987
    • An atrial defibrillator reliably detects a depolarization activation wave of the heart and delivers cardioverting electrical energy to the atria of the heart in synchronism with a detected depolarization activation wave. The atrial defibrillator includes a first sensor for producing a first electrical output having a duration substantially equal to the duration of the depolarization activation wave sensed between a first pair of spaced apart locations of the heart. The atrial defibrillator further includes a second sensor for producing a second electrical output having a duration substantially equal to the duration of the depolarization activation wave sensed between a second pair of spaced apart locations of the heart. The spacing between the second pair of locations is greater than the spacing between the first pair of locations. A microprocessor is responsive to the first and second electrical outputs for providing an indication signal indicating the occurrence of the depolarization activation wave when the second electrical output is longer in duration than the first electrical output. A pulse generator coupled to the microprocessor applies electrical cardioverting energy to the atria of the heart in response to the indication signal.
    • 心房除颤器可靠地检测心脏的去极化激活波,并且与检测到的去极化激活波同步地将心电转移到心脏的心房。 心房除颤器包括用于产生第一电输出的第一传感器,其具有基本上等于在心脏的第一对间隔位置之间感测到的去极化激活波的持续时间的持续时间。 心房除颤器还包括第二传感器,用于产生第二电输出,该第二电输出的持续时间基本上等于在心脏的第二对间隔位置之间感测的去极化激活波的持续时间。 第二对位置之间的间隔大于第一对位置之间的间隔。 当第二电输出的持续时间比第一电输出更长时,微处理器响应于第一和第二电输出,用于提供指示去极化激活波的发生的指示信号。 耦合到微处理器的脉冲发生器响应于指示信号将心脏转换能量施加到心脏的心房。