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1. 发明申请

WO1996038201A1 APPARATUS AND METHOD FOR DISCRIMINATING FLOW OF BLOOD IN A CARDIOVASCULAR SYSTEM 审中-公开
标题翻译：用于分辨血管内血液流动的装置和方法
公开(公告)号：WO1996038201A1
公开(公告)日：1996-12-05
申请号：PCT/US1996008180
申请日：1996-05-31
申请人： INTERMEDICS, INC. , ROSBOROUGH, John, P. , MUNSHI, Mohammed, Z. , BONNERUP, Chris, A.
发明人： INTERMEDICS, INC.
IPC分类号： A61N01/39
CPC分类号： A61N1/3918
摘要： An implantable cardiac stimulator includes means for delivering a first electrical shock via implantable stimulating electrodes at a time when there is substantially no flow of blood, as determined by conventional fibrillation detection means. At least one of the stimulating electrodes is disposed in a blood flow path of the cardiovascular system. The first shock is preferably of insufficient energy level to cause defibrillation. A potential is measured as a function of time between the blood-contacting electrode and a reference electrode following delivery of the first shock to obtain a first potential equilibration function under no-flow conditions. A second therapeutic electrical shock, preferably of sufficient energy level to effect defibrillation, is delivered via the stimulating electrodes. A second potential equilibration function is measured following delivery of the second shock. The first and second potential equilibration functions are compared, and if the two functions are sufficiently different in morphology, it is determined that blood is flowing.
摘要翻译：植入式心脏刺激器包括用于在基本上没有血液流动的时候通过可植入刺激电极传递第一次电击的装置，如通过常规原纤维检测装置确定的。刺激电极中的至少一个设置在心血管系统的血流路径中。第一冲击优选是能量水平不足以引起除颤。在第一冲击传递之后，测量作为血液接触电极和参考电极之间的时间的函数的电位，以在无流动条件下获得第一电位平衡功能。通过刺激电极输送优选具有足够能量水平以实现除颤的第二疗效电击。在传送第二次冲击后测量第二个潜在的平衡功能。比较第一和第二潜在平衡功能，如果两种功能在形态上有很大差异，则确定血液流动。

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