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公开(公告)号：US5454836A
公开(公告)日：1995-10-03
申请号：US184218
申请日：1994-01-18
CPC分类号： A61N1/36514 , A61N1/368
摘要： A VDD-type pacing system which may have a floating atrial electrode analyzes P-wave events and absences of P-waves to determine data indicative of the likelihood of P-wave undersensing. The pacemaker logic chooses a reaction algorithm to respond to atrial events in accordance with whether an absence of a P-wave is more likely to have been an undersense or an incidence of bradycardia. Specific algorithms are presented which illustrate pacemaker reactions to probable undersense and brady occurrences. The pacemaker also incorporates a subsystem for detection of undersense events.
摘要翻译： 可以具有浮动心房电极的VDD型起搏系统分析P波事件和P波的缺失以确定指示P波欠感觉的可能性的数据。 起搏器逻辑选择反应算法来响应心房事件，根据是否缺少P波更有可能是心律失常或心动过缓的发生。 提出了具体的算法，说明起搏器对可能的不足和发生的事件的反应。 起搏器还包含一个用于检测不足事件的子系统。
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2.发明授权Rate adaptive dual chamber pacing system and method with automatic adjustment of operating parameters for minimizing sensor-sinus competition 失效速率自适应双室起搏系统和方法，自动调整操作参数以最小化传感器 - 窦性竞争
公开(公告)号：US5391189A
公开(公告)日：1995-02-21
申请号：US147347
申请日：1993-11-04
CPC分类号： A61N1/368
摘要： There is disclosed a pacemaker, a dual chamber VDD(R) or DDD(R) pacemaker, having improved features for avoiding undesired sensor-sinus competition and providing blended sensor and sinus (atrial) control. The pacemaker employs atrial hysteresis which is used during sensing of natural atrial beats in order to enable tracking the sinus signals that occur at rates below the current pacing limit; and sensor hysteresis which prevents early takeover by sensor control and, in a DDDR pacer, controls when the sensor rate controls over a sensed sinus rate and also enables dropping the pacing rate during sensor control so as to enable finding and tracking of underlying lower rate sinus signals. The sensor hysteresis function is automatically adapted by obtaining and processing scattergram data representative of the sensor rate compared to the average of the natural sinus rate, and adjusting the sensor hysteresis function to optimally match the data. The atrial hysteresis function is also automatically adjusted as a function of rate by obtaining and processing scattergram data representative of sinus jitter, i.e., the difference between the current rate of the last atrial interval and the average sinus rate. In addition, blending of sensor and sinus control is achieved by automatic adjustment of the rate response curve based on accumulated data representative of RR signals as a function of running atrial rate.
摘要翻译： 已经公开了起搏器，双室VDD（R）或DDD（R）起搏器，具有改进的特征，用于避免不期望的传感器窦性竞争并提供混合传感器和窦（心房）控制。 心脏起搏器使用心房滞后，用于检测自然心房搏动，以便能够跟踪以低于当前起搏极限的速率发生的窦信号; 和传感器滞后，防止传感器控制的早期接管，并且在DDDR起搏器中，当传感器速率控制感测到的窦速率时，还可以控制传感器控制期间的起搏速率，以便能够找到和跟踪潜在的较低速率窦 信号。 传感器滞后功能通过获得和处理表示与自然窦速率的平均值相比的传感器速率的散点图数据自动适应，并调整传感器滞后功能以最佳地匹配数据。 通过获得和处理代表窦性抖动的散点图数据，即最近心房间隔的当前速率与平均窦速率之间的差异，心律滞后功能也作为速率的函数自动调节。 此外，传感器和窦控制的混合是通过基于代表RR信号的累积数据作为运行心率的函数自动调整速率响应曲线来实现的。
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3.发明授权Rate adaptive pacemaker with adjustment of sensor rate as a function of sensed sinus rate 失效评估自适应起搏器，调整传感器速率作为检测到的窦速率的函数
公开(公告)号：US5350409A
公开(公告)日：1994-09-27
申请号：US49181
申请日：1993-04-19
IPC分类号： A61N1/365
CPC分类号： A61N1/36585 , A61N1/36514
摘要： A rate adaptive pacemaker and method of operation, where the sensor-indicated rate is adjusted as a function of sensed sinus rate. The pacemaker is particularly adapted for VDDR operation. The natural sinus rate is compared to the sensor-indicated rate at one or more rates, and the sensor response function is adjusted, or adapted as a function of such comparisons, so as to optimize sensing of the atrial rate and maintenance of synchronous operation. The rate response function may be adjusted specifically at upper pacing limit, and may also be adjusted as a function of comparisons made at other rates.
摘要翻译： 速率自适应起搏器和操作方法，其中传感器指示速率作为感测到的窦速率的函数被调整。 起搏器特别适用于VDDR操作。 将自然窦速率以一个或多个速率与传感器指示的速率进行比较，并且传感器响应函数被调整或适应于这种比较的函数，以便优化心房率的感测和同步操作的维护。 速率响应函数可以在较高的起搏极限下进行调整，也可以根据以其他速率进行比较的函数进行调整。
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