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2. 发明授权

US5549647A Pacemaker with improved far field R wave sensing and suppression 失效
标题翻译：起搏器具有改善的远场R波感测和抑制
公开(公告)号：US5549647A
公开(公告)日：1996-08-27
申请号：US318050
申请日：1994-10-04
申请人： Gustaaf A. P. Stoop , Marijn van Gemert , Paul V. van Zanten
发明人： Gustaaf A. P. Stoop , Marijn van Gemert , Paul V. van Zanten
IPC分类号： A61N1/368 , A61N1/362
CPC分类号： A61N1/3622 , A61N1/3682
摘要： A dual chamber pacemaker is provided with a dynamic PVARP which tracks the occurrence of high rate atrial senses within the normal PVARP range. The dynamic PVARP is a short window of about 50 ms which is moved toward the time of occurrence of any sense signal within the window range of about 50-200 ms following the ventricular event. Senses which occur within the dynamic window are rejected, or blanked, while senses occurring within the window range but outside of the window are recognized and evaluated. The dynamic window technique accordingly enables the pacemaker to recognize tachycardia senses which would otherwise be blanked by a fixed length PVARP, while providing efficient suppression of FFRS events. The pacemaker also provides a technique for determining whether rejected senses are tachy atrial senses or FFRS, by modulating the AV interval and thus shifting the dynamic window which is coupled to the ventricular pulse. As a result of this modulation, FFRS events move with the dynamic window, but tachy senses are covered, or revealed, enabling the pacemaker to make an appropriate response.
摘要翻译：双室心脏起搏器配备动态PVARP，跟踪正常PVARP范围内高速率心房感觉的发生。动态PVARP是约50ms的短窗口，其在心室事件之后的约50-200ms的窗口范围内移动到任何感测信号发生的时间。发生在动态窗口内的感觉被拒绝或消隐，同时识别和评估在窗口范围外发生的感觉。动态窗口技术相应地使心脏起搏器能够识别出以固定长度的PVARP消隐的心动过速感觉，同时提供对FFRS事件的有效抑制。起搏器还提供了一种用于通过调节AV间隔并因此移动耦合到心室脉搏的动态窗口来确定被拒绝的感觉是快速心房感觉或FFRS的技术。作为这种调制的结果，FFRS事件随着动态窗口移动，但是覆盖或透露了快速感觉，使得起搏器能够作出适当的响应。

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