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1. 发明申请

US20070191892A1 APPARATUS AND METHODS FOR AUTOMATIC ADJUSTMENT OF AV INTERVAL TO ENSURE DELIVERY OF CARDIAC RESYNCHRONIZATION THERAPY 审中-公开
标题翻译：用于自动调整AV间隔以确保进行心脏再生治疗的装置和方法
公开(公告)号：US20070191892A1
公开(公告)日：2007-08-16
申请号：US11671345
申请日：2007-02-05
申请人： Thomas Mullen , John Burnes , Aleksandre Sambelashvili
发明人： Thomas Mullen , John Burnes , Aleksandre Sambelashvili
IPC分类号： A61N1/362
CPC分类号： A61N1/3627 , A61N1/3682 , A61N1/3684
摘要： The disclosure provides methods and apparatus of left ventricular pacing including automated adjustment of a atrio-ventricular (AV) pacing delay interval and intrinsic AV nodal conduction testing. It includes—upon expiration or reset of a programmable AV Evaluation Interval (AVEI)—performing the following: temporarily increasing a paced AV interval and a sensed AV interval and testing for adequate AV conduction and measuring an intrinsic atrio-ventricular (PR) interval for a right ventricular (RV) chamber. Thus, in the event that the AV conduction test reveals a physiologically acceptable intrinsic PR interval then storing the physiologically acceptable PR interval in a memory structure (e.g., a median P-R from one or more cardiac cycles). In the event that the AV conduction test reveals an AV conduction block condition or if unacceptably long PR intervals are revealed then a pacing mode-switch to a bi-ventricular (Bi-V) pacing mode occurs and the magnitude of the AVEI is increased.
摘要翻译：本公开提供了左心室起搏的方法和装置，包括自动调节心房（AV）起搏延迟间隔和内部AV节点传导测试。它包括 - 可编程AV评估间隔（AVEI）的到期或复位 - 执行以下操作：临时增加节奏的AV间隔和感测到的AV间隔，并测试足够的AV传导并测量内在的心房（PR）间隔右心室（RV）室。因此，在AV传导测试揭示生理上可接受的固有PR间隔的情况下，然后将生理上可接受的PR间期存储在存储器结构中（例如，来自一个或多个心动周期的中值P-R）。在AV传导测试显示AV传导阻滞状态或者如果不能接受的长PR间隔被揭示的情况下，则起搏模式切换到双心室（Bi-V）起搏模式并且增加AVEI的幅度。

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