公开(公告)号：US20050245975A1

公开(公告)日：2005-11-03

申请号：US10824789

申请日：2004-04-15

申请人： Douglas Hettrick ,  Paul Ziegler ,  Jacqueline Mittelstadt ,  Rahul Mehra

发明人： Douglas Hettrick ,  Paul Ziegler ,  Jacqueline Mittelstadt ,  Rahul Mehra

IPC分类号： A61N1/362

CPC分类号： A61N1/3621

摘要： A method and device for controlling delivery of therapy in an implantable device that includes sensing a plurality of events, detecting whether there is an increase in the frequency of first events of the plurality of events corresponding to onset of a second event of the plurality of sensed events, adjusting parameters associated with delivery of the therapy in response to the detected increased frequency of first sensed events, and delivering the therapy using the adjusted parameters.

摘要翻译： 一种用于控制可植入装置中治疗传递的方法和装置，包括感测多个事件，检测是否存在与多个感测的第二事件的开始对应的多个事件的第一事件的频率的增加 事件，响应于检测到的第一感测事件的增加的频率调整与治疗的递送相关联的参数，以及使用调整的参数递送治疗。

公开(公告)号：US07065398B2

公开(公告)日：2006-06-20

申请号：US10260845

申请日：2002-09-30

申请人： Douglas A. Hettrick ,  Jacqueline Mittelstadt

发明人： Douglas A. Hettrick ,  Jacqueline Mittelstadt

IPC分类号： A61B5/452

CPC分类号： A61N1/3622 ,  A61B5/0464

摘要： Techniques for preventing inadvertent detection of AT termination may involve predicting potential undersensing of atrial events, and delaying detection of AT termination when undersensing of atrial events is predicted. For example, an implantable medical device may measure ventricular-atrial (VA) intervals of a heart rhythm using tracked atrial and ventricular events. The device calculates a slope of the series of the VA intervals, and estimates a prospective VA interval using the calculated slope and the most recently measured VA interval. The device determines whether the estimated VA interval is within a threshold range. When the estimated VA interval is outside of the threshold range, the device predicts possible undersensing of atrial events and delays detection of the AT episode termination. The delay detection of AT episode termination improves the accuracy of information collected by event counters.

摘要翻译： 用于防止无意识地检测AT终止的技术可能涉及预测心房事件的潜在不足，并且在预测心房事件不足时延迟AT终止的检测。 例如，可植入医疗装置可以使用跟踪的心房和心室事件来测量心律的心室（VA）间隔。 该装置计算一系列VA间隔的斜率，并使用计算的斜率和最近测量的VA间隔来估计预期的VA间隔。 该装置确定估计的VA间隔是否在阈值范围内。 当估计的VA间隔超出阈值范围时，该装置预测心房事件可能的不足，并延迟检测AT发作终止。 AT事件终止的延迟检测提高了事件计数器收集的信息的准确性。