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    • 2. 发明申请
    • METHOD AND APPARATUS FOR DETERMINING MYOCARDIAL ELECTRICAL RESITUTION AND CONTROLLING EXTRA SYSTOLIC STIMULATION
    • 用于确定心肌电极电位的方法和装置以及控制超声波刺激
    • WO2004096352A1
    • 2004-11-11
    • PCT/US2004/012083
    • 2004-04-19
    • MEDTRONIC, INC.SPLETT, Vincent, E.BURNES, John, E.
    • SPLETT, Vincent, E.BURNES, John, E.
    • A61N1/362
    • A61N1/36507A61N1/3622A61N1/3627
    • A system and method are provided for controlling extra systolic intervals during extra systolic stimulation delivered to effectively produce post-extra systolic potentiation (PESP) to improve hemodynamic function for the treatment of cardiac mechanical insufficiency. Controlling the interval is based on measurements of the electrical restitution properties of myocardial tissue. A parameter related to the action potential duration is measured from an electrical signal received from the heart during extra systolic stimulation at different intervals. An electrical restitution condition is determined from the measured action potential duration related parameter. An operating interval is set based on the measured electrical restitution. Methods for controlling the interval further include setting the operating ESI based on electrical restitution and/or the mechanical effect of PESP on post-extra systoles. Methods for controlling the interval include setting the operating interval based on a measure of electrical restitution and a measure of mechanical restitution.
    • 提供了一种系统和方法,用于在额外的收缩期刺激期间控制额外的收缩期间隔,以有效地产生额外的收缩后增强(PESP),以改善用于治疗心脏机械功能不全的血液动力学功能。 控制间隔是基于心肌组织的电恢复特性的测量。 与动作电位持续时间相关的参数是在不同间隔的额外的收缩期刺激期间从心脏接收的电信号来测量的。 根据测量的动作电位持续时间相关参数确定电恢复条件。 基于测量的电气恢复来设置操作间隔。 用于控制间隔的方法还包括基于电还原和/或PESP对后额外收缩的机械效应来设定操作ESI。 用于控制间隔的方法包括基于电恢复的测量和机械恢复的测量来设置操作间隔。