公开(公告)号：US07027868B2

公开(公告)日：2006-04-11

申请号：US10004164

申请日：2001-10-30

申请人： John C. Rueter ,  Christopher M. Manrodt

发明人： John C. Rueter ,  Christopher M. Manrodt

IPC分类号： A61N1/37

CPC分类号： A61N1/371 ,  A61N1/3714 ,  A61N2001/083

摘要： A capture detection algorithm in which atrial capture is detected and distinguished. Further, an immediate measurement of the capture threshold is implemented when a pacemaker switches a lead's polarity from bipolar to unipolar in response to a detected lead failure, in either one or both chambers. Atrial chamber reset (ACR) and AV conduction (AVC), implemented to measure an atrial pacing threshold, are comparatively measured to enable measurement of the atrial pacing threshold. The data that is used to choose between ACR and AVC methods is used to determine the progression of the patient's disease state. Some of the significant aspects of the invention include enablement of accurate threshold measurements, including calculation of stability criteria, precise interval measurements and the use of reference interval to determine capture and loss of capture.

公开(公告)号：US5441524A

公开(公告)日：1995-08-15

申请号：US113950

申请日：1993-08-30

申请人： John C. Rueter ,  Bruce L. Wilkoff

发明人： John C. Rueter ,  Bruce L. Wilkoff

IPC分类号： A61N1/365 ,  A61N1/368 ,  A61N1/362

CPC分类号： A61N1/36585 ,  A61N1/368

摘要： A multiple sensor cardiac pacemaker blends the outputs from a fast-reacting Activity sensor and a slower-reacting Minute Ventilation sensor to achieve an optimally desirable pacing rate. The pacemaker conserves battery energy by forcing the Minute Ventilation sensor output to be at its minimum value by disabling the Minute Ventilation algorithm for a predetermined time period when the Activity sensor is at its minimum observed value. Power is conserved because the Minute Ventilation sensor and associated algorithms which normally consume power to operate the circuitry, and to measure impedance are disabled temporarily only during selected periods where the Activity sensor is at its minimum observed value, thereby maintaining optimal blending of the pacemaker sensor outputs in achieving the desired pacing rates.

摘要翻译： 多传感器心脏起搏器将来自快速反应的活性传感器和较慢反应的分钟通气传感器的输出混合以实现最佳期望的起搏速率。 当活动传感器处于其最小观察值时，通过在分钟通气算法中禁用分钟通气算法，通过将分钟通气传感器输出强制为最小值来保护电池能量。 功率是保守的，因为分钟通气传感器和通常消耗电力来操作电路和测量阻抗的相关算法暂时仅在活动传感器处于其最小观测值的选定时段内被暂停，从而保持起搏器传感器的最佳混合 输出达到所需的起搏率。

公开(公告)号：US4505276A

公开(公告)日：1985-03-19

申请号：US504707

申请日：1983-06-15

申请人： Harold T. Markowitz ,  John C. Rueter ,  Edwin G. Duffin

发明人： Harold T. Markowitz ,  John C. Rueter ,  Edwin G. Duffin

IPC分类号： A61N1/37 ,  A61B5/04

CPC分类号： A61N1/3702

摘要： A pacing system analyzer is constructed to provide verification that an implantable cardiac pacer operating in a demand mode will not itself produce tachycardia in a patient because of abnormally long patient retrograde conduction time. The analyzer when performing the retrograde conduction test provides an intercardiac electrogram, changes the ventricular sense amplifier to asynchronous and samples to determine the maximum amplitude signals over a sampling period to select an amplifier gain factor. After the gain factor is set additional signal samples are collected, peak-to-peak amplitude is measured and interpolation between data is made to provide waveform "segments" and the best waveform segment to employ for testing for retrograde conduction is selected. The time periods from pacing to these segments are measured and utilized to determine if retrograde conduction is present.

摘要翻译： 构建起搏系统分析器来提供在需求模式下操作的可植入心脏起搏器由于异常长的患者逆行传导时间本身不会在患者中产生心动过速的验证。 进行逆行导通测试时，分析仪提供心脏电图，将心室感应放大器改变为异步和采样，以确定采样周期内的最大振幅信号，以选择放大器增益因子。 在设置增益因子之后，收集附加信号样本，测量峰 - 峰幅度，并且数据之间的内插被提供以提供波形“段”，并且选择用于逆向导通测试的最佳波形段。 测量和利用从起搏到这些段的时间段以确定是否存在逆行传导。