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    • 1. 发明授权
    • Alternans and pharmacological agents
    • 替代品和药理剂
    • US09591984B2
    • 2017-03-14
    • US12630718
    • 2009-12-03
    • Richard J. CohenAli Haghighi-Mood
    • Richard J. CohenAli Haghighi-Mood
    • A61B5/0452A61B5/00
    • A61B5/0452A61B5/7203
    • First cardiac signal data generated from measured heart beats of a subject is received. Characteristics of alternans occurring in the received first cardiac signal data are determined. Second cardiac signal data generated from measured heart beats of the subject after a change relating to an administration of a pharmacological agent is received. Characteristics of alternans occurring in the received second cardiac signal data are determined. The characteristics of alternans occurring in the received first cardiac signal data are compared with the characteristics of alternans occurring in the received second cardiac signal data.
    • 接收从受检者的测量心跳产生的第一心脏信号数据。 确定在接收到的第一心脏信号数据中发生的交替发生的特征。 在接受与药物剂的施用有关的变化之后,从被测物的测量心跳产生的第二心脏信号数据被接收。 确定在所接收的第二心脏信号数据中发生的交替发生的特征。 在接收的第一心脏信号数据中发生的交替发生的特征与在所接收的第二心脏信号数据中发生的交替发生的特征进行比较。
    • 2. 发明申请
    • METHODS AND APPARATUS FOR DETERMINING CARDIAC OUTPUT
    • 用于测定心脏输出量的方法和装置
    • US20110034813A1
    • 2011-02-10
    • US12903915
    • 2010-10-13
    • Richard J. CohenRamakrishna MukkamalaDerin A. Sherman
    • Richard J. CohenRamakrishna MukkamalaDerin A. Sherman
    • A61B5/021A61B5/0402A61B5/02
    • A61B5/02007A61B5/02255A61B5/029A61B5/0456A61B5/726
    • The present invention provides methods and apparatus for determining a dynamical property of the systemic or pulmonary arterial tree using long time scale information, i.e., information obtained from measurements over time scales greater than a single cardiac cycle. In one aspect, the invention provides a method and apparatus for monitoring cardiac output (CO) from a single blood pressure signal measurement obtained at any site in the systemic or pulmonary arterial tree or from any related measurement including, for example, fingertip photoplethysmography.According to the method the time constant of the arterial tree, defined to be the product of the total peripheral resistance (TPR) and the nearly constant arterial compliance, is determined by analyzing the long time scale variations (greater than a single cardiac cycle) in any of these blood pressure signals. Then, according to Ohm's law, a value proportional to CO may be determined from the ratio of the blood pressure signal to the estimated time constant. The proportional CO values derived from this method may be calibrated to absolute CO, if desired, with a single, absolute measure of CO (e.g., thermodilution). The present invention may be applied to invasive radial arterial blood pressure or pulmonary arterial blood pressure signals which are routinely measured in intensive care units and surgical suites or to noninvasively measured peripheral arterial blood pressure signals or related noninvasively measured signals in order to facilitate the clinical monitoring of CO as well as TPR.
    • 本发明提供了使用长时间尺度信息(即从大于单个心动周期的时间尺度的测量获得的信息)来确定全身或肺动脉树的动力特性的方法和装置。 一方面,本发明提供一种用于从在全身或肺动脉树中的任何位置处获得的单个血压信号测量值或任何相关测量(包括例如指尖光体积描记术)来监测心输出量(CO)的方法和装置。 根据该方法,通过分析长时间尺度变化(大于单个心动周期)来确定被定义为总外周阻力(TPR)和几乎恒定的动脉顺应性的乘积的动脉树的时间常数 任何这些血压信号。 然后,根据欧姆定律,可以根据血压信号与估计的时间常数的比率确定与CO成比例的值。 如果需要,从该方法得到的比例CO值可以通过CO的单一绝对测量(例如,热稀释)校准为绝对CO。 本发明可以应用于在重症监护病房和手术套件中常规测量的侵入性桡动脉血压或肺动脉血压信号,或应用于非侵入性测量的外周动脉血压信号或相关非侵入性测量信号,以便于临床监测 的CO以及TPR。
    • 3. 发明授权
    • Method and apparatus for the guided ablative therapy of fast ventricular arrhythmia
    • 用于快速室性心律失常的引导性烧蚀治疗的方法和装置
    • US07792563B2
    • 2010-09-07
    • US11376994
    • 2006-03-16
    • Richard J. CohenMaya Barley
    • Richard J. CohenMaya Barley
    • A61B5/04
    • A61B5/04A61B18/1492A61B2018/00351A61B2018/00839A61N1/362
    • Method and apparatus for guiding ablative therapy of abnormal biological electrical excitation. The excitation from the previous excitatory wave is significant at the beginning of the next excitation. In particular, it is designed for treatment of fast cardiac arrhythmias. Electrical signals are acquired from recording electrodes, and an inverse dipole method is used to identify the site of origin of an arrhythmia. The location of the tip of an ablation catheter is similarly localized from signals acquired from the recording electrodes while electrical pacing energy is delivered to the tip of the catheter close to or in contact with the cardiac tissue. The catheter tip is then guided to the site of origin of the arrhythmia, and ablative radio frequency energy is delivered to its tip to ablate the site.
    • 引导异常生物电激发的消融治疗的方法和装置。 来自先前兴奋波的激发在下次激发开始时是显着的。 特别地,它被设计用于治疗快速心律失常。 从记录电极获取电信号,使用反偶极方法来识别心律不齐的起源部位。 消融导管的尖端的位置类似地从从记录电极获取的信号定位,而电起搏能量被传送到靠近或与心脏组织接触的导管的尖端。 然后将导管尖端引导到心律失常的原点,并将消融射频能量输送到其尖端以烧蚀部位。
    • 4. 发明申请
    • ALTERNANS AND PHARMACOLOGICAL AGENTS
    • ALTERNANS和药物代理
    • US20100145204A1
    • 2010-06-10
    • US12630718
    • 2009-12-03
    • Richard J. CohenAli Haghighi-Mood
    • Richard J. CohenAli Haghighi-Mood
    • A61B5/0472
    • A61B5/0452A61B5/7203
    • First cardiac signal data generated from measured heart beats of a subject is received. Characteristics of alternans occurring in the received first cardiac signal data are determined. Second cardiac signal data generated from measured heart beats of the subject after a change relating to an administration of a pharmacological agent is received. Characteristics of alternans occurring in the received second cardiac signal data are determined. The characteristics of alternans occurring in the received first cardiac signal data are compared with the characteristics of alternans occurring in the received second cardiac signal data.
    • 接收从受检者的测量心跳产生的第一心脏信号数据。 确定在接收到的第一心脏信号数据中发生的交替发生的特征。 在接受与药物剂的施用有关的变化之后,从被测物的测量心跳产生的第二心脏信号数据被接收。 确定在所接收的第二心脏信号数据中发生的交替发生的特征。 在接收的第一心脏信号数据中发生的交替发生的特征与在所接收的第二心脏信号数据中发生的交替发生的特征进行比较。
    • 6. 发明授权
    • Measuring and assessing cardiac electrical stability
    • 测量和评估心脏电气稳定性
    • US5713367A
    • 1998-02-03
    • US379375
    • 1995-01-26
    • Jeffrey M. ArnoldPaul AlbrechtKevin S. LibrettRichard J. Cohen
    • Jeffrey M. ArnoldPaul AlbrechtKevin S. LibrettRichard J. Cohen
    • A61B5/0408A61B5/0452A61B5/053A61B5/22G06F17/00
    • A61B5/0535A61B5/0408A61B5/04085A61B5/0452A61B5/222A61B5/4884A61B5/7203A61B5/7207A61B5/721Y10S128/901
    • The alternans pattern of cycle-to-cycle variability in physiologic waveforms is assessed by applying transducers to a subject, recording physiologic signals, and analyzing the alternans pattern of variation in waveform morphology. Preferred embodiments include methods and apparatus for measuring and assessing alternans in the presence of physiologic stress, such as exercise, in order to induce or increase the amplitude of the alternans, improvements in signal processing to improve the sensitivity and specificity of the analysis, improvements to provide real-time analysis and feedback to the operator conducting the recording of physiologic signals, reduction in the effect of intercycle interval variability on waveform variability, reduction in the effects of respiration on the alternans measurement, improved means for determining the statistical significance of the alternans measurement, handling of abnormal beats such as atrial and ventricular premature beats, choosing of data epochs over which to perform the alternans measurement, using multiple electrodes to improve the accuracy of the alternans measurement, and combining measurement of alternans with other cardiovascular diagnostic tests to facilitate and improve the combined diagnostic capability.
    • 通过对受试者应用传感器,记录生理信号和分析波形形态变化的交替模式来评估生理波形中周期与周期变异性的交替模式。 优选的实施方案包括用于测量和评估存在生理应激(诸如运动)的交替量的方法和装置,以便诱导或增加交替量的幅度,改进信号处理以提高分析的灵敏度和特异性,改善 为进行生理信号记录的操作员提供实时分析和反馈,减少周期间隔变化对波形变化的影响,减少呼吸对交替量测量的影响,改进确定交替量的统计学意义的手段 测量,异常搏动的处理,例如心房和心室早搏,选择进行交替测量的数据时期,使用多个电极来提高交替量测量的准确度,以及将交替量测量与其他心血管诊断测试相结合以促进 和imp 结合诊断能力。
    • 8. 发明授权
    • Methods and apparatus for determining cardiac output
    • 用于确定心输出量的方法和装置
    • US09289133B2
    • 2016-03-22
    • US12903915
    • 2010-10-13
    • Richard J. CohenRamakrishna MukkamalaDerin A. Sherman
    • Richard J. CohenRamakrishna MukkamalaDerin A. Sherman
    • A61B5/021A61B5/02A61B5/0402A61B5/029A61B5/0225A61B5/0456A61B5/00
    • A61B5/02007A61B5/02255A61B5/029A61B5/0456A61B5/726
    • The present invention provides methods and apparatus for determining a dynamical property of the systemic or pulmonary arterial tree using long time scale information, i.e., information obtained from measurements over time scales greater than a single cardiac cycle. In one aspect, the invention provides a method and apparatus for monitoring cardiac output (CO) from a single blood pressure signal measurement obtained at any site in the systemic or pulmonary arterial tree or from any related measurement including, for example, fingertip photoplethysmography.According to the method the time constant of the arterial tree, defined to be the product of the total peripheral resistance (TPR) and the nearly constant arterial compliance, is determined by analyzing the long time scale variations (greater than a single cardiac cycle) in any of these blood pressure signals. Then, according to Ohm's law, a value proportional to CO may be determined from the ratio of the blood pressure signal to the estimated time constant. The proportional CO values derived from this method may be calibrated to absolute CO, if desired, with a single, absolute measure of CO (e.g., thermodilution). The present invention may be applied to invasive radial arterial blood pressure or pulmonary arterial blood pressure signals which are routinely measured in intensive care units and surgical suites or to noninvasively measured peripheral arterial blood pressure signals or related noninvasively measured signals in order to facilitate the clinical monitoring of CO as well as TPR.
    • 本发明提供了使用长时间尺度信息(即从大于单个心动周期的时间尺度的测量获得的信息)来确定全身或肺动脉树的动力特性的方法和装置。 一方面,本发明提供一种用于从在全身或肺动脉树中的任何位置处获得的单个血压信号测量值或任何相关测量(包括例如指尖光体积描记术)来监测心输出量(CO)的方法和装置。 根据该方法,通过分析长时间尺度变化(大于单个心动周期)来确定被定义为总外周阻力(TPR)和几乎恒定的动脉顺应性的乘积的动脉树的时间常数 任何这些血压信号。 然后,根据欧姆定律,可以根据血压信号与估计的时间常数的比率确定与CO成比例的值。 如果需要,从该方法得到的比例CO值可以通过CO的单一绝对测量(例如,热稀释)校准为绝对CO。 本发明可以应用于在重症监护病房和手术套件中常规测量的侵入性桡动脉血压或肺动脉血压信号,或应用于非侵入性测量的外周动脉血压信号或相关非侵入性测量信号,以便于临床监测 的CO以及TPR。