Apparatus and method for detection of atrial fibrillation by ventricular
stability and ventricular pacing
    32.
    发明授权
    Apparatus and method for detection of atrial fibrillation by ventricular stability and ventricular pacing 失效
    用于通过心室稳定性和心室起搏检测心房颤动的装置和方法

    公开(公告)号:US5591215A

    公开(公告)日:1997-01-07

    申请号:US560447

    申请日:1995-11-17

    CPC分类号: A61N1/3622 A61N1/36521

    摘要: A cardiac implant device is provided in which the ventricular rate is monitored to differentiate between atrial fibrillation and ventricular tachycardia or other cardiac conditions. For this purpose, the ventricular rate stability is monitored by, for example, measuring the R-R intervals of successive ventricular beats. If the ventricular rate is found to be unstable, the ventricle is paced at a test rate to try to stabilize the ventricle. If the attempt is unsuccessful, atrial fibrillation is assumed and, if necessary, corresponding therapy is applied. If the attempt is unsuccessful, atrial fibrillation is eliminated as a cause of the ventricular rate instability and other types of classifying and treating the cardiac condition may be used.

    摘要翻译: 提供心脏植入装置,其中监测心室率以区分心房颤动和室性心动过速或其他心脏状况。 为此,通过例如测量连续心室搏动的R-R间隔来监测心室率稳定性。 如果发现心室率不稳定,则以测试率进行心室起搏以试图稳定心室。 如果尝试不成功,则假定心房颤动,如有必要,应用相应的治疗。 如果尝试不成功,则作为心室率不稳定性的原因消除心房颤动,并且可以使用其他类型的分类和治疗心脏病症。

    OPTIMIZATION OF AV DELAY USING VENTRICULAR PRESSURE SIGNAL
    34.
    发明申请
    OPTIMIZATION OF AV DELAY USING VENTRICULAR PRESSURE SIGNAL 审中-公开
    使用心室压力信号优化AV延迟

    公开(公告)号:US20110160787A1

    公开(公告)日:2011-06-30

    申请号:US12751440

    申请日:2010-03-31

    IPC分类号: A61N1/365

    CPC分类号: A61N1/36564 A61N1/3682

    摘要: An implantable medical device system including an intraventricular pressure sensor controls an atrioventricular (AV) delay based on the intraventricular pressure signal. An atrial kick pressure waveform corresponding to active contraction of an atrial chamber is detected from the intraventricular pressure signal. In one embodiment, a time interval corresponding to the atrial kick pressure waveform is measured. An AV delay is set in response to the measured time interval.

    摘要翻译: 包括心室内压力传感器的可植入医疗装置系统基于心室内压力信号来控制房室(AV)延迟。 从心室内压力信号检测与心房的主动收缩对应的心房踢压力波形。 在一个实施例中,测量对应于心房踢压力波形的时间间隔。 响应于测量的时间间隔设置AV延迟。

    Implantable medical device system and method with signal quality monitoring and response
    35.
    发明授权
    Implantable medical device system and method with signal quality monitoring and response 有权
    可植入医疗器械系统和方法,具有信号质量监测和响应

    公开(公告)号:US07496409B2

    公开(公告)日:2009-02-24

    申请号:US11392065

    申请日:2006-03-29

    IPC分类号: A61N1/00

    摘要: An implantable medical device system and method are provided for monitoring the quality of signals sensed by a subcutaneously implanted device using subcutaneous electrodes. In one embodiment, the method includes selecting one or more sensing vectors; sensing signals from selected sensing vectors, determining a signal quality metric in response to a sensed signal, comparing the signal quality metric to a predetermined threshold, and generating a loss of signal quality response in response to the signal quality crossing the threshold.

    摘要翻译: 提供了一种植入式医疗装置系统和方法,用于监测由皮下植入装置使用皮下电极感测的信号的质量。 在一个实施例中,该方法包括选择一个或多个感测向量; 感测来自所选择的感测向量的信号,响应于感测到的信号确定信号质量度量,将信号质量度量与预定阈值进行比较,以及响应于穿过阈值的信号质量而产生信号质量响应的损失。

    Apparatus and method for diagnosis of cardiac disease using a respiration monitor
    36.
    发明授权
    Apparatus and method for diagnosis of cardiac disease using a respiration monitor 有权
    使用呼吸监测器诊断心脏病的装置和方法

    公开(公告)号:US06454719B1

    公开(公告)日:2002-09-24

    申请号:US09630298

    申请日:2000-08-01

    申请人: Saul E. Greenhut

    发明人: Saul E. Greenhut

    IPC分类号: A61B508

    摘要: The cardiac condition of a patient is determined by a cardiac monitor apparatus using a respiration parameter such as a current respiration signal or a respiration rate. The variability of the respiration parameter is used to generate a signal indicative of the current heart failure status of the patient, and more particularly whether the patient's condition has improved, worsened, or remained unchanged over a predetermined time period. The circuitry for detecting the respiration parameter may be implanted in the patient, for example as part of a pacemaker, while at least some of the analyzing circuitry may be external and remote from the patient. Alternatively the whole device may be implantable.

    摘要翻译: 患者的心脏状况由使用呼吸参数例如当前呼吸信号或呼吸率的心脏监测装置确定。 呼吸参数的变化用于产生指示患者的当前心力衰竭状态的信号,更具体地说,是否在预定时间段内患者的状况是否改善,恶化或保持不变。 用于检测呼吸参数的电路可以植入患者体内,例如作为起搏器的一部分,而分析电路中的至少一些可以是外部的并且远离患者。 或者,整个设备可以是可植入的。

    Pacemaker with safe R-wave synchronization during countershock
conversion of atrial fibrillation
    37.
    发明授权
    Pacemaker with safe R-wave synchronization during countershock conversion of atrial fibrillation 失效
    起搏器在心房颤动的倒数转换期间具有安全的R波同步

    公开(公告)号:US5999850A

    公开(公告)日:1999-12-07

    申请号:US897292

    申请日:1997-07-21

    IPC分类号: A61N1/362 A61N1/365 A61N1/39

    摘要: An implantable atrial defibrillator analyzes both the atrium and the ventricle to determine an abnormal atrial condition of the atrium and if the ventricle is unstable. Therapy is applied to correct the abnormal atrial condition, such as atrial fibrillation, only if the ventricle is stable, to insure that the therapy does not provoke a ventricular tachyarrhythmia. If the ventricle is unstable, first a process is performed to stabilize it, for example by using a ventricular pacing protocol. After the ventricle is stabilized, the atrial therapy is applied in synchronism with the ventricular events (i.e., in synchronism with either ventricular intrinsic events or ventricular pacing pulses.)

    摘要翻译: 可植入心房除颤器分析心房和心室,以确定心房的异常心房状况,如果心室不稳定。 只有在心室稳定的情况下,才能使用治疗来纠正心房颤动等异常心房状况,以确保治疗不会引起室性快速性心律失常。 如果心室不稳定,首先进行一个过程以使其稳定,例如通过使用心室起搏方案。 在心室稳定之后,与心室事件同步施用心房治疗(即,与心室内部事件或心室起搏脉冲同步)。

    Method and apparatus for controlling a pacemaker using respiration
    38.
    发明授权
    Method and apparatus for controlling a pacemaker using respiration 失效
    使用呼吸控制起搏器的方法和装置

    公开(公告)号:US5964788A

    公开(公告)日:1999-10-12

    申请号:US959391

    申请日:1997-10-28

    申请人: Saul E. Greenhut

    发明人: Saul E. Greenhut

    IPC分类号: A61N1/362 A61N1/365

    CPC分类号: A61N1/36521 A61N1/3627

    摘要: In an implantable pacemaker the pacing rate is adjusted in synchrony with the respiration of the patient to thereby mimic respiratory sinus arrhythmia noted in healthy patients. Preferably, first a metabolic demand parameter pacing parameter is derived from a metabolic demand of the patient, such as minute volume, and then this parameter is adjusted using a respiration detector. The adjustment may be made dependent on the exercise level of the patient, his age and his physical fitness.

    摘要翻译: 在可植入的起搏器中,起搏速率与患者的呼吸同步调节,从而模拟健康患者中注意到的呼吸窦性心律失常。 优选地,首先,从患者的代谢需求(例如微小体积)导出代谢需求参数起搏参数,然后使用呼吸检测器来调整该参数。 调整可以取决于患者的运动水平,他的年龄和他的身体健康。

    Fuzzy logic expert system for an implantable cardiac device
    39.
    发明授权
    Fuzzy logic expert system for an implantable cardiac device 失效
    用于可植入心脏装置的模糊逻辑专家系统

    公开(公告)号:US5713938A

    公开(公告)日:1998-02-03

    申请号:US748127

    申请日:1996-11-12

    IPC分类号: A61N1/372 A61N1/37 A61B5/0452

    CPC分类号: A61N1/37211

    摘要: A diagnostic device makes use of knowledge based rule system for making a prognosis of a cardiac malfunction based on operation parameters and/or patient characteristics received from a cardiac implant. The device generates a symptoms vector from the information received from the implant, and using the expert rules to generate an appropriate prognosis. Both pathological problems and programming problems may be detected in this manner.

    摘要翻译: 诊断装置利用基于知识的规则系统,以基于从心脏植入物接收的手术参数和/或患者特征来预测心脏功能不全。 该设备从植入物接收的信息中产生症状矢量,并使用专家规则来产生适当的预后。 可以以这种方式检测病理问题和编程问题。

    Apparatus and method for detecting the progression of AV nodal block and
atrial capture
    40.
    发明授权
    Apparatus and method for detecting the progression of AV nodal block and atrial capture 失效
    用于检测AV结节块和心房捕获进展的装置和方法

    公开(公告)号:US5683426A

    公开(公告)日:1997-11-04

    申请号:US705339

    申请日:1996-08-29

    IPC分类号: A61N1/368 A61N1/37 A61N1/362

    摘要: A pacemaker operating in an AAI or AAIR mode is provided with a detector for monitoring an atrial lead and detecting cross talk or far field R-waves from the ventricle. This signal is used to detect and monitor AV nodal block and its progression in a patient. The same signal may also be used to indicate atrial capture.

    摘要翻译: 以AAI或AAIR模式运行的起搏器配有检测器,用于监测心房线和检测来自心室的串扰或远场R波。 该信号用于检测和监测AV节点块及其在患者中的进展。 也可以使用相同的信号来指示心房捕获。