Implantable medical device for measuring ventricular pressure
    1.
    发明授权
    Implantable medical device for measuring ventricular pressure 有权
    用于测量心室压力的可植入医疗器械

    公开(公告)号:US06915162B2

    公开(公告)日:2005-07-05

    申请号:US10002496

    申请日:2001-11-15

    IPC分类号: A61B5/0215 A61N1/365 A61B5/04

    摘要: An implantable medical device has a pressure sensing arrangement to measure right ventricular pressure of a heart including a pressure sensor adapted to be positioned in the right ventricle of the heart, to measure the pressure and to generate a pressure signal in response to the measured pressure. The pressure sensing arrangement also has a pressure signal processor and a timing unit. The processor determines from the pressure signal, using diastolic timing signals from the timing unit based on the pressure signal identifying the diastolic phase, a diastolic pressure signal representing the ventricular pressure only during the diastolic phase of the heart cycle.

    摘要翻译: 可植入医疗装置具有用于测量心脏的右心室压力的压力感测装置,包括适于定位在心脏右心室的压力传感器,以测量压力并响应于测量的压力产生压力信号。 压力感测装置还具有压力信号处理器和定时单元。 处理器根据压力信号,基于识别舒张期的压力信号使用来自定时单元的舒张定时信号,仅在心脏周期舒张期期间表示心室压力的舒张压信号。

    Detection and reduction of phrenic nerve stimulation
    3.
    发明授权
    Detection and reduction of phrenic nerve stimulation 有权
    检测和减少膈神经刺激

    公开(公告)号:US08532774B1

    公开(公告)日:2013-09-10

    申请号:US13545794

    申请日:2012-07-10

    IPC分类号: A61N1/37

    摘要: The present invention provides methods for detecting phrenic nerve stimulation. A pacing module is instructed to deliver pacing pulses having a predetermined pulse amplitude and/or width within the refractory period of the left ventricle. The pacing pulses are repeatedly delivered during a number of cardiac cycles and wherein the pacing pulses are delivered at different delays relative to an onset of the refractory period of the left ventricle in different cardiac cycles. Impedance signals are measured in time windows synchronized with the delivery of pacing pulses in the refractory period of the left ventricle using at least one electrode configuration. At least one impedance signal is gathered from each time window, aggregated impedance signals are created using the impedance signals from the different time windows, and the aggregated impedance signals are analyzed to detect PNS.

    摘要翻译: 本发明提供了检测膈神经刺激的方法。 指示起搏模块在左心室的不应期内输送具有预定脉搏幅度和/或宽度的起搏脉冲。 起搏脉冲在多个心动周期期间重复递送,并且其中起搏脉冲相对于在不同心脏周期中的左心室的不应期的开始以不同的延迟递送。 使用至少一个电极配置,在与左心室的不应期中的起搏脉冲的递送同步的时间窗口中测量阻抗信号。 从每个时间窗口收集至少一个阻抗信号,使用来自不同时间窗口的阻抗信号创建聚合阻抗信号,并分析聚合阻抗信号以检测PNS。

    Determination of cardiac resynchronization therapy settings
    4.
    发明授权
    Determination of cardiac resynchronization therapy settings 有权
    心脏再同步治疗设置的测定

    公开(公告)号:US08798765B2

    公开(公告)日:2014-08-05

    申请号:US13471167

    申请日:2012-05-14

    IPC分类号: A61N1/365 A61N1/372 A61N1/368

    摘要: CRT settings for an implantable medical device are determined by applying pacing pulses to heart chambers of a scheme of different combinations of interchamber delays. A respective width parameter value representing an R or P wave width is determined for each such delay combination based on an ECG representing signal and the width parameter values are employed to estimate a parametric model defining the width parameter as a function of interchamber delays. Candidate interchamber delays that minimize the width parameter are determined from the parametric model and employed to determine optimal CRT settings. The technique provides an efficient way of finding optimal CRT settings when multiple pacing sites are available in a heart chamber.

    摘要翻译: 用于可植入医疗装置的CRT设置通过将不同组合的车间延迟的方案应用于心室来进行起搏脉冲来确定。 基于ECG表示信号为每个这样的延迟组合确定表示R或P波宽的相应宽度参数值,并且使用宽度参数值来估计定义作为间歇延迟的函数的宽度参数的参数模型。 从参数模型中确定最小化宽度参数的候选车间延迟,并用于确定最佳CRT设置。 该技术提供了一种在心室中可用多个起搏部位时可以找到最佳CRT设置的有效方式。

    DETERMINATION OF CARDIAC RESYNCHRONIZATION THERAPY SETTINGS
    5.
    发明申请
    DETERMINATION OF CARDIAC RESYNCHRONIZATION THERAPY SETTINGS 有权
    心脏康复治疗方法的确定

    公开(公告)号:US20120310296A1

    公开(公告)日:2012-12-06

    申请号:US13471167

    申请日:2012-05-14

    IPC分类号: A61N1/365

    摘要: CRT settings for an implantable medical device are determined by applying pacing pulses to heart chambers of a scheme of different combinations of interchamber delays. A respective width parameter value representing an R or P wave width is determined for each such delay combination based on an ECG representing signal and the width parameter values are employed to estimate a parametric model defining the width parameter as a function of interchamber delays. Candidate interchamber delays that minimize the width parameter are determined from the parametric model and employed to determine optimal CRT settings. The technique provides an efficient way of finding optimal CRT settings when multiple pacing sites are available in a heart chamber.

    摘要翻译: 用于可植入医疗装置的CRT设置通过将不同组合的车间延迟的方案应用于心室来进行起搏脉冲来确定。 基于ECG表示信号为每个这样的延迟组合确定表示R或P波宽的相应宽度参数值,并且使用宽度参数值来估计定义作为间歇延迟的函数的宽度参数的参数模型。 从参数模型中确定最小化宽度参数的候选车间延迟,并用于确定最佳CRT设置。 该技术提供了一种在心室中可用多个起搏部位时可以找到最佳CRT设置的有效方式。

    Rate responsive heart stimulation
    6.
    发明授权
    Rate responsive heart stimulation 失效
    速率响应心脏刺激

    公开(公告)号:US5417715A

    公开(公告)日:1995-05-23

    申请号:US132815

    申请日:1993-10-07

    IPC分类号: A61N1/365 A61N1/368

    CPC分类号: A61N1/368 A61N1/36521

    摘要: A rate-responsive heart stimulator with a variable stimulation interval contains a measurement device which generates a measurement signal corresponding to the volume of blood in a heart during the blood-filling phase (diastole) and a comparator which compares the measurement signal with a defined threshold value corresponding to a defined degree of blood filling. The comparator generates a control signal when the measurement signal reaches the threshold value, the control signal representing the time elapsing since the last stimulation pulse, and controlling the heart stimulator's stimulation interval.

    摘要翻译: 具有可变刺激间隔的速率响应心脏刺激器包含测量装置,该测量装置在血液灌注阶段(舒张期)期间产生对应于心​​脏中的血液体积的测量信号,以及将测量信号与限定阈值进行比较的比较器 值对应于确定的血液灌注程度。 当测量信号达到阈值时,比较器产生控制信号,控制信号表示自上次刺激脉冲以来经过的时间,并且控制心脏刺激器的刺激间隔。

    Detection and reduction of phrenic nerve stimulation
    7.
    发明授权
    Detection and reduction of phrenic nerve stimulation 有权
    检测和减少膈神经刺激

    公开(公告)号:US08527051B1

    公开(公告)日:2013-09-03

    申请号:US13545776

    申请日:2012-07-10

    IPC分类号: A61N1/37

    CPC分类号: A61N1/36521 A61N1/3702

    摘要: The present invention provides implantable medical devices for detecting phrenic nerve stimulation. A pacing module is configured to deliver pacing pulses having a predetermined pulse amplitude and/or width within the refractory period of the left ventricle. The pacing pulses are repeatedly delivered during a number of cardiac cycles, and the pacing pulses are delivered at different delays relative to an onset of the refractory period of the left ventricle in different cardiac cycles. An impedance measurement module is configured to measure impedance signals in time windows synchronized with the delivery of pacing pulses in the refractory period of the left ventricle. A phrenic nerve stimulation, PNS, detection module is configured to gather at least one impedance signal from each time window, create aggregated impedance signals using the impedance signals from the different time windows, and analyze the aggregated impedance signals to detect PNS.

    摘要翻译: 本发明提供了用于检测膈神经刺激的可植入医疗装置。 起搏模块被配置为在左心室的不应期内输送具有预定脉冲幅度和/或宽度的起搏脉冲。 起搏脉冲在多个心动周期期间重复递送,起搏脉冲相对于不同心脏周期中左心室的不应期的开始以不同的延迟递送。 阻抗测量模块被配置为测量与在左心室的不应期中递送起搏脉冲同步的时间窗内的阻抗信号。 膈神经刺激,PNS检测模块配置为从每个时间窗口收集至少一个阻抗信号,使用来自不同时间窗口的阻抗信号创建聚合阻抗信号,并分析聚合阻抗信号以检测PNS。

    Pacemaker wherein emission of stimulation pulses is controlled dependent
on stretching of the ventricular wall
    8.
    发明授权
    Pacemaker wherein emission of stimulation pulses is controlled dependent on stretching of the ventricular wall 失效
    其中刺激脉冲的发射取决于心室壁的拉伸来控制起搏器

    公开(公告)号:US6078835A

    公开(公告)日:2000-06-20

    申请号:US242278

    申请日:1998-02-12

    IPC分类号: A61N1/365

    CPC分类号: A61N1/36564

    摘要: A pacemaker has control circuits contained in an enclosure and a lead containing an electrical conductor connected to an electrode for delivering electrical stimulation pulses to a heart. The stretching of a wall in the ventricle, corresponding to adequate filling of the ventricle in the heart, is determined in order to identify a time of emitting the stimulation pulses. This stretching is measured indirectly by measurement of pressure in the ventricle using a pressure sensor disposed near the lead in the ventricle. The signal from the sensor is supplied via the lead to circuitry in the enclosure, wherein the signal is amplified and is supplied to an edge detector, which detects an increasing or positive edge of the signal. The edge detector compares the incoming signal with a threshold value, and when the pressure indicated by the signal increases so as to exceed the threshold value, the edge detector supplies a signal to the control circuit which, in turn, triggers the emission of a stimulation pulse from a pulse generator, with or without a delay. The aforementioned stretching can also be measured using a strain gauge or a distance sensor attached to the ventricle wall.

    摘要翻译: PCT No.PCT / SE97 / 01239 Sec。 371日期1999年2月12日 102(e)1999年2月12日PCT PCT 1997年7月4日PCT公布。 公开号WO98 / 06454 日期1998年2月19日起搏器具有包含在外壳中的控制电路和包含连接到电极的电导体的引线,用于将电刺激脉冲传递到心脏。 为了确定发射刺激脉冲的时间,确定对应于心脏中心室充分填充的心室中的壁的拉伸。 使用设置在心室中的引线附近的压力传感器通过测量心室中的压力来间接测量该拉伸。 来自传感器的信号通过导线提供给外壳中的电路,其中信号被放大并被提供给检测信号的增加或上升沿的边缘检测器。 边缘检测器将输入信号与阈值进行比较,并且当信号指示的压力增加以超过阈值时,边缘检测器向控制电路提供信号,该信号又触发了刺激的发射 来自脉冲发生器的脉冲,有或没有延迟。 上述拉伸也可以使用附着于心室壁的应变计或距离传感器来测量。

    MEDICAL DEVICE AND METHOD FOR MONITORING HEMATOCRIT AND SVO2
    9.
    发明申请
    MEDICAL DEVICE AND METHOD FOR MONITORING HEMATOCRIT AND SVO2 审中-公开
    医疗装置和监测HEMATOCRIT和SVO2的方法

    公开(公告)号:US20090177145A1

    公开(公告)日:2009-07-09

    申请号:US12373356

    申请日:2007-02-22

    摘要: A method, an implantable medical device, and a computer-readable medium encoded with programming instructions allow monitoring of a hematocrit value and an SvO2 level of a patient, making use of at least one medical lead connected to an implantable medical device that carries an optical sensor module that measures at least one hematocrit value and at least one SvO2 value using at least first, second and third light radiation wavelengths, by determining a present hematocrit value from at least one of the measured hematocrit values and determining a present SvO2 value from at least one of the measured SvO2 values, and determining a patient status by evaluating the present hematocrit value and the present SvO2 value, to allow a change in the patient status to be identified.

    摘要翻译: 一种方法,可植入医疗装置和用程序指令编码的计算机可读介质允许监测患者的血细胞比容值和SvO2水平,利用连接到可植入医疗装置的至少一个医疗引线,该医用引线携带光学 传感器模块,其通过使用至少第一,第二和第三光辐射波长测量至少一个血细胞比容值和至少一个SvO2值,通过从所测量的血细胞比容值中的至少一个确定目前的血细胞比容值,并从 测量的SvO2值中的至少一个,以及通过评估当前血细胞比容值和当前SvO2值来确定患者状态,以允许识别患者状态的改变。

    IMPLANTABLE HEART STIMULATING DEVICE WITH STIMULATION RATE OPTIMIZATION
    10.
    发明申请
    IMPLANTABLE HEART STIMULATING DEVICE WITH STIMULATION RATE OPTIMIZATION 有权
    具有刺激率优化的可植入心脏刺激装置

    公开(公告)号:US20090210023A1

    公开(公告)日:2009-08-20

    申请号:US12305552

    申请日:2006-06-21

    IPC分类号: A61N1/365

    摘要: An implantable heart stimulating device has a stimulation pulse generator that emits stimulation pulses at an adjustable stimulation rate, an activity sensor that emits an activity signal in response to detected activity of the patient, and a physiological parameter sensor that generates a physiological sensor signal in response to a detected physiological parameter. The activity and physiological sensor signals are supplied to a control arrangement that sets the stimulation rate for the stimulation pulse generator by executing a stimulation rate algorithm dependent on those signals. In the stimulation rate algorithm, if the physiological signal indicates an emotional stress on the part of the patient, the stimulation rate is increased to an adjustable emotional stress rate level, and if no increase in the activity signal occurs during a predetermined time period following the stimulation rate increase, the stimulation rate is decreased.

    摘要翻译: 可植入心脏刺激装置具有以可调节刺激速率发出刺激脉冲的刺激脉冲发生器,响应于患者的检测到的活动而发出活动信号的活动传感器,以及响应于生成生理传感器信号的生理参数传感器 到检测到的生理参数。 活动和生理传感器信号被提供给控制装置,其通过执行依赖于那些信号的刺激速率算法来设定刺激脉冲发生器的刺激速率。 在刺激速率算法中,如果生理信号表示患者的情绪应激,则刺激率增加到可调节的情绪应激率水平,并且如果活动信号的增加在后面的预定时间段内不发生 刺激率增加,刺激率降低。