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公开(公告)号：US07593766B2
公开(公告)日：2009-09-22
申请号：US11614546
申请日：2006-12-21
IPC分类号： A61B5/04
CPC分类号： A61B5/053 , A61B5/046 , A61B5/0538 , A61N1/3621 , A61N1/36521 , A61N1/3925 , A61N1/395 , A61N1/3962
摘要： A detector for atrial fibrillation and/or atrial flutter comprises an atrial input for receiving an atrial signal representing an intraatrial electrogram or a time course of an intraatrial impedance, a ventricular input for receiving a ventricular event signal comprising information on an occurrence of a cyclically reoccurring ventricular event in chronological association to an atrial signal received via atrial input, an averaging unit adapted to average a plurality of sections of said atrial signal, each section to be considered for averaging starts or ends at a predetermined offset before a ventricular event, and to put out an averaged atrial signal, a peak amplitude determination unit adapted to determine peak-to-peak amplitude of said averaged atrial signal, and threshold comparator adapted to compare peak-to-peak amplitude of averaged atrial signal to predetermined reference value and to generate an AF warning signal if peak-to-peak amplitude of averaged atrial signal is less than predetermined threshold value.
摘要翻译： 用于心房颤动和/或心房颤动的检测器包括用于接收表示心房内电极电图或心房内阻抗的时间过程的心房信号的心房输入，用于接收心室事件信号的心室输入，所述心室输入包括关于周期性重现的发生的信息 按照与通过心房输入接收的心房信号的时间顺序关联的心室事件，适于平均所述心房信号的多个部分的平均单元，要被考虑用于在心室事件之前以预定偏移开始或结束的每个部分的平均单元，以及 放出平均的心房信号，峰值振幅确定单元，用于确定所述平均心房信号的峰 - 峰幅度;以及阈值比较器，用于将平均心房信号的峰 - 峰振幅与预定参考值进行比较，并产生 一个AF警告信号，如果平均心房信号的峰 - 峰幅度小于tha n个预定阈值。
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公开(公告)号：US07570990B2
公开(公告)日：2009-08-04
申请号：US11541054
申请日：2006-09-29
IPC分类号： A61B5/04
CPC分类号： A61B5/053 , A61B5/046 , A61B5/0538 , A61N1/3621 , A61N1/36521 , A61N1/3925 , A61N1/395 , A61N1/3962
摘要： Atrial fibrillation or flutter detector having impedance unit, with measurement input, connected to atrial electrode line having electrode for unipolar measurement of atrium impedance and implemented to generate atrial impedance signal obtained in unipolar manner so that impedance signal comprises multiple impedance values detected at different instants within particular atrial cycle for each atrial cycle, comprising atrial contraction and the following relaxation of the atrium, and having a signal input, via which ventricle signal is supplied to detector, which reflects instants of ventricular contractions in chronological assignment to impedance signal, the detector having an analysis unit, implemented to average multiple sequential impedance signal sections of unipolar atrial impedance signal, delimited by two sequential ventricular contractions with one another and determine maximum amplitude of averaged unipolar atrial impedance signal section, compare to comparison value, and if maximum amplitude of averaged unipolar atrial impedance signal
摘要翻译： 具有阻抗单元（具有测量输入）的心房颤动或颤振检测器连接到具有用于单极度测量心房阻抗的电极的心房电极线，并且被实现为产生以单极方式获得的心房阻抗信号，使得阻抗信号包括在不同时刻检测到的多个阻抗值 每个心房周期的特定心房周期，包括心房收缩和心房的随后松弛，并且具有信号输入，通过该信号输入将脑室信号提供给检测器，其将按时间顺序分配的心室收缩时间反映到阻抗信号，检测器具有 一个分析单元，用于平均单极性心房阻抗信号的多个顺序阻抗信号部分，由两个连续心室收缩相互间隔，并确定平均单极心房阻抗信号部分的最大振幅，与比较值相比，如果 平均单极心房阻抗信号的最大振幅<比较值，产生AF怀疑信号。
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