公开(公告)号：US20060235476A1

公开(公告)日：2006-10-19

申请号：US11108472

申请日：2005-04-18

申请人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds ,  Mark Brown

发明人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds ,  Mark Brown

IPC分类号： A61N1/39 ,  A61B5/0402

CPC分类号： A61B5/0456 ,  A61B5/0464 ,  A61B5/7217 ,  A61B5/7239 ,  A61B5/7264 ,  A61N1/3622 ,  A61N1/3702 ,  A61N1/3704

摘要： A method for identifying and classifying various types of oversensing in implantable medical devices (IMDs), such as implantable cardioverter defibrillators (ICDs), to assist a physician in choosing corrective action to reduce the likelihood of oversensing and inappropriate therapy delivery. Far-field electrogram (EGM) signals are analyzed to detect the occurrence of R-waves, and the result is compared to the number and pattern of R-waves sensed by the IMD and indicated on the marker channel. A marker channel with more sensed R-waves than indicated by analysis of the far-field EGM indicates the presence of oversensing, including double-counting of R-waves, T-wave oversensing, lead malfunction or failure, poor lead connections, noise associated with electromagnetic interference, non-cardiac myopotentials, etc. Identification of the type of oversensing may be determined by analysis of the number and pattern of marker channel sensed R-waves with respect to the timing of the R-waves detected from the far-field EGM.

公开(公告)号：US20060224075A1

公开(公告)日：2006-10-05

申请号：US11096851

申请日：2005-03-31

申请人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds

发明人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds

IPC分类号： A61B5/04

CPC分类号： A61N1/3621 ,  A61B5/04525 ,  A61B5/0464 ,  A61N1/3702 ,  A61N1/3925

摘要： An implantable cardioverter defibrillator (ICD) senses ventricular depolarizations (R-waves) in an electrogram signal to detect a ventricular tachycardia or fibrillation episodes. The EGM signal is also monitored in real time for characteristics that uniquely identify instances of T-wave oversensing. The ICD determines whether detection of a tachycardia or fibrillation episode is appropriate based upon counts of each of the unique characteristics evidencing T-wave oversensing.

公开(公告)号：US20050137636A1

公开(公告)日：2005-06-23

申请号：US10818098

申请日：2004-04-05

申请人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds ,  Li Wang

发明人： Bruce Gunderson ,  Amisha Patel ,  Chad Bounds ,  Li Wang

IPC分类号： A61N1/08 ,  A61N1/37

CPC分类号： A61N1/3706 ,  A61N2001/083

摘要： A method and apparatus for detecting a lead-related condition that includes determining whether a first oversensing criteria is satisfied, determining whether a second oversensing criteria is satisfied, determining whether an impedance criteria has been satisfied, and generating an alert in response to more than one of the first oversensing criteria, the second over sensing criteria and the impedance criteria being satisfied.

摘要翻译： 一种用于检测引线相关状况的方法和装置，包括确定是否满足第一过度标准，确定是否满足第二过度标准，确定是否已经满足阻抗标准，以及响应于多于一个产生警报 的第一超检标准，第二过度感测标准和阻抗标准得到满足。