公开(公告)号：US07818059B2

公开(公告)日：2010-10-19

申请号：US11115628

申请日：2005-04-27

申请人： John C. Rueter ,  Todd J. Sheldon

发明人： John C. Rueter ,  Todd J. Sheldon

IPC分类号： A61N1/362

CPC分类号： A61N1/371 ,  A61N1/3714

摘要： Embodiments of the invention provide systems and methods for an implantable medical device comprising means for selecting between an atrial chamber reset (ACR) test and an atrioventricular conduction (AVC) test to provide atrial capture management and means for switching between an atrial-based pacing mode and a dual chamber pacing mode based on detecting relatively reliable atrioventricular conduction.

摘要翻译： 本发明的实施例提供了一种用于可植入医疗装置的系统和方法，包括用于在房室复位（ACR）测试和房室传导（AVC）测试之间进行选择以提供心房捕获管理的装置和用于在基于心房的起搏模式之间切换的装置 以及基于检测相对可靠的房室传导的双室起搏模式。

公开(公告)号：US07711423B2

公开(公告)日：2010-05-04

申请号：US11135921

申请日：2005-05-24

申请人： John E. Burnes ,  David A. Igel ,  John C. Rueter ,  Yong K. Cho ,  Luc R. Mongeon ,  Harold E. Stone ,  Jodi Zilinski

发明人： John E. Burnes ,  David A. Igel ,  John C. Rueter ,  Yong K. Cho ,  Luc R. Mongeon ,  Harold E. Stone ,  Jodi Zilinski

IPC分类号： A61N1/362

CPC分类号： A61N1/36521

摘要： Impedance, e.g. sub-threshold impedance, is measured across the heart at selected cardiac cycle times as a measure of chamber expansion or contraction. One embodiment measures impedance over a long AV interval to obtain the minimum impedance, indicative of maximum ventricular expansion, in order to set the AV interval. Another embodiment measures impedance change over a cycle and varies the AV pace interval in a binary search to converge on the AV interval causing maximum impedance change indicative of maximum ventricular output. Another method varies the right ventricle to left ventricle (VV) interval to converge on an impedance maximum indicative of minimum cardiac volume at end systole. Another embodiment varies the VV interval to maximize impedance change. Other methods vary the AA interval to maximize impedance change over the entire cardiac cycle or during the atrial cycle.

摘要翻译： 阻抗，例如 亚阈值阻抗是在选定心脏周期时间内心脏测量的，作为腔室扩张或收缩的量度。 为了设定AV间隔，一个实施例测量长AV间隔上的阻抗以获得指示最大心室扩张的最小阻抗。 另一个实施例测量一个周期的阻抗变化，并且改变二进制搜索中的AV步速间隔以收敛于AV间隔，从而引起指示最大心室输出的最大阻抗变化。 另一种方法将右心室改变为左心室（VV）间隔，以收敛于指示最终心脏收缩最小心脏容积的阻抗最大值。 另一实施例改变VV间隔以最大化阻抗变化。 其他方法改变AA间隔以最大化整个心动周期或心房周期期间的阻抗变化。

公开(公告)号：US07433736B2

公开(公告)日：2008-10-07

申请号：US10284943

申请日：2002-10-31

申请人： John C. Rueter ,  Luc R. Mongeon

发明人： John C. Rueter ,  Luc R. Mongeon

IPC分类号： A61N1/08

CPC分类号： A61N1/3712 ,  A61N1/3714

摘要： Techniques for increasing the accuracy of detection of atrial capture may involve determining a ventricular sensing window for ventricular senses associated with atrial test pulses based on observed ventricular senses. For example, an implanted medical device may deliver atrial test pulses to a patient at a time prior to respective atrial pacing pulses to evaluate atrial capture. The implanted medical device observes ventricular senses in response to the atrial test pulses. The implanted medical device may determine a point such as, for example, a midpoint of the ventricular sensing window for the ventricular senses and shift a midpoint of the default ventricular window to the determined midpoint. Further, the implanted medical device may measure patient parameters, such as heart rate and activity level, and determine a ventricular sensing window for ventricular senses associated with atrial test pulses based on the observed ventricular senses and measured patient parameters.

摘要翻译： 用于增加心房捕获检测准确度的技术可能涉及基于观察到的心室感觉确定与心房测试脉冲相关的心室感觉的心室感知窗口。 例如，植入的医疗装置可以在相应的心房起搏脉冲之前的时间向患者传送心房测试脉冲，以评估心房捕获。 植入的医疗装置响应于心房测试脉冲观察心室感觉。 植入的医疗装置可以确定诸如例如用于心室感觉的心室感知窗口的中点的点，并将默认心室窗口的中点移动到所确定的中点。 此外，植入的医疗装置可以测量患者参数，例如心率和活动水平，并且基于观察到的心室感测和测量的患者参数来确定与心房测试脉冲相关的心室感觉的心室感测窗口。