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    • 6. 发明申请
    • Refractory period tracking and arrhythmia detection
    • 难治期跟踪和心律失常检测
    • US20050075676A1
    • 2005-04-07
    • US10680528
    • 2003-10-07
    • D. DenoRuth KlepferWilliam HavelDavid SchneiderVincent Splett
    • D. DenoRuth KlepferWilliam HavelDavid SchneiderVincent Splett
    • A61N1/362A61N1/365
    • A61N1/365A61N1/3622
    • Techniques for estimating the temporal refractory period of a heart, for adjusting a parameter for delivery of extra-systolic stimulation (ESS) therapy and for detecting an arrhythmia during delivery of ESS therapy are disclosed. In some embodiments, probe pulses are periodically delivered to estimate the location of the end boundary of the refractory period, and accordingly estimate its length. In some embodiments, the parameter is adjusted based on estimated length of the refractory period. For example, an extra-systolic interval (ESI) for delivery of ESS is adjusted to be a fixed interval longer than estimated lengths of the refractory period. In other embodiments, the parameter is adjusted based on a measured delay (or latency) between delivery of an ESS pulse and detection of an evoked response resulting from the pulse. In some embodiments, delays between delivery of an ESS pulse and detection of a subsequent depolarization are monitored to detect an arrhythmia.
    • 公开了用于估计心脏的时间不应期的技术,用于调整用于递送收缩期刺激(ESS)治疗的参数和用于在递送ESS治疗期间检测心律失常的技术。 在一些实施例中,周期性地递送探针脉冲以估​​计不应期的末端边界的位置,并因此估计其长度。 在一些实施例中,基于估计的不应期的长度来调整参数。 例如,用于递送ESS的收缩期间期(ESI)被调整为比不应期的估计长度更长的固定间隔。 在其他实施例中,基于在递送ESS脉冲和从脉冲产生的诱发响应的检测之间的测量延迟(或等待时间)来调整参数。 在一些实施例中,监测递送ESS脉冲和随后去极化的检测之间的延迟以检测心律失常。
    • 7. 发明申请
    • Extra-systolic stimulation therapy delivery and sensing via different electrode sets
    • 超声心动图刺激治疗通过不同电极组传递和感测
    • US20050075674A1
    • 2005-04-07
    • US10680493
    • 2003-10-07
    • Glenn ZillmerD. DenoNirav Sheth
    • Glenn ZillmerD. DenoNirav Sheth
    • A61N1/362A61N1/365
    • A61N1/365A61N1/3622
    • Techniques for delivering ESS to a heart of a patient are disclosed. An implantable medical device delivers ESS stimulation, and in some embodiments pacing stimulation, to a chamber of the heart via a first electrode set. The implantable medical device senses electrical activity within the chamber via a second set of electrodes. In some embodiments, the implantable medical device is able to apply a shorter blanking interval than is typical in the pacing art to a sense amplifier coupled to the second set of electrodes, allowing the implantable medical device to better detect arrhythmias and evoked responses. A variety of electrodes may be used in conjunction with the present invention; including without limitation, tip, ring, coil, can-based, endocardial, epicardial, pericardial, cardiac vein-based, subcutaneous, and/or surface electrodes.
    • 公开了将ESS递送到患者心脏的技术。 可植入医疗装置通过第一电极组将ESS刺激,并且在一些实施例中将起搏刺激提供给心脏室。 可植入医疗装置经由第二组电极感测室内的电活动。 在一些实施例中,可植入医疗装置能够将比起搏技术中典型的更短的消隐间隔应用于耦合到第二组电极的感测放大器,从而允许可植入医疗装置更好地检测心律失常和诱发反应。 可以结合本发明使用各种电极; 包括但不限于尖端,环形,线圈,罐基,心内膜,心外膜,心包,心静脉,皮下和/或表面电极。
    • 8. 发明申请
    • Myocardial stimulation
    • 心肌刺激
    • US20060149184A1
    • 2006-07-06
    • US11030574
    • 2005-01-06
    • Orhan SoykanD. Deno
    • Orhan SoykanD. Deno
    • A61N1/30
    • A61N1/3627A61N1/36042A61N1/3684
    • In general, the invention is directed to methods and devices for electrically stimulating heart tissue. The invention includes delivery of stimulation to transplanted biological material, such as transplanted cells, transplanted in a myocardium of a heart during an ejection phase of a cardiac cycle. The invention also includes delivery of cardiac potentiation therapy stimulation, which improves the hemodynamic performance of the heart. Stimulation to transplanted biological material and cardiac potentiation therapy stimulation can improve the performance of a heart damaged by myocardial infarction.
    • 通常,本发明涉及用于电刺激心脏组织的方法和装置。 本发明包括在移植的生物材料(例如移植的细胞)中递送刺激,在心脏周期的射血期期间移植到心脏的心肌中。 本发明还包括递送心脏增强疗法刺激,其改善心脏的血液动力学性能。 对移植的生物材料和心脏增强疗法刺激的刺激可以改善由心肌梗塞损伤的心脏的表现。
    • 9. 发明申请
    • Evaluating ventricular synchrony based on phase angle between sensor signals
    • 基于传感器信号之间的相位角评估心室同步
    • US20050038481A1
    • 2005-02-17
    • US10638883
    • 2003-08-11
    • Edward ChinchoyD. DenoYong Cho
    • Edward ChinchoyD. DenoYong Cho
    • A61N1/362A61N1/368A61N1/365
    • A61N1/368A61N1/3627
    • An implantable medical device evaluates ventricular synchrony by determining a phase angle between at least two sensor signals that reflect mechanical contraction of the ventricles. In exemplary embodiments, two intracardiac impedance signals associated with the right and left ventricles, respectively, with two points within either of the left and right ventricles, or with both the left and right ventricles relative to a reference point, are processed. In such embodiments, fundamental frequency phases of each of the impedance signals may be compared to determine the phase angle between the signals. In some embodiments, the signals are used to dynamically adjust one or more timing intervals, such as a V-V timing interval, for delivery of cardiac resynchronization therapy (CRT) pacing. In such embodiments, the one or more timing intervals are periodically adjusted to reduce or possibly eliminate ventricular dysynchrony as indicated by the phase angle between the sensor signals.
    • 可植入医疗装置通过确定反映心室的机械收缩的至少两个传感器信号之间的相位角来评估心室同步。 在示例性实施例中,处理与左心室和左心室相关联的两个心内阻抗信号,其中左心室和右心室内的两个点,或者与左心室和右心室相对于参考点两者。 在这样的实施例中,可以比较每个阻抗信号的基频相位以确定信号之间的相位角。 在一些实施例中,信号用于动态调整一个或多个定时间隔,例如V-V定时间隔,用于递送心脏再同步治疗(CRT)起搏。 在这样的实施例中,周期性地调整一个或多个定时间隔以减少或可能消除如传感器信号之间的相位角所指示的心室异常。
    • 10. 发明申请
    • Electrically efficient neurally-excitable stimulation technical field
    • 电动高效神经兴奋刺激技术领域
    • US20050038479A1
    • 2005-02-17
    • US10638855
    • 2003-08-11
    • D. DenoDavid EulerLawrence MulliganEdwin DuffinDavid Igel
    • D. DenoDavid EulerLawrence MulliganEdwin DuffinDavid Igel
    • A61N1/362A61N1/365A61N1/368
    • A61N1/36514A61N1/3627A61N1/36564A61N1/368
    • A medical device, e.g., an implantable medical device, delivers one or more neurally-excitable stimulation pulses to myocardial tissue during a period when the tissue is refractory. The width of the pulses is less than or equal to approximately one half millisecond. In some embodiments, the current amplitude of the pulses is less than or equal to approximately twenty milliamps. In exemplary embodiments, the medical device delivers a pulse train of six or fewer pulses separated from each other by an interval that is greater than or equal to approximately ten milliseconds. In some embodiments, the medical device delivers pulses according to a schedule stored in a memory, or as a function of a monitored physiological parameter of a patient, such as an intracardiac pressure. In some embodiments, the medical device suspends or withholds delivery of neurally-excitable based on detection of cardiac ischemia.
    • 医疗装置,例如可植入的医疗装置,在组织难治的时期期间,向心肌组织递送一个或多个神经可兴奋的刺激脉冲。 脉冲的宽度小于或等于大约一个半毫秒。 在一些实施例中,脉冲的电流幅度小于或等于大约二十毫安。 在示例性实施例中,医疗设备递送彼此间隔大于或等于大约十毫秒的六个或更少个脉冲的脉冲串。 在一些实施例中,医疗装置根据存储在存储器中的计划或者作为患者的被监测的生理参数(例如心脏内压力)递送脉冲。 在一些实施方案中,基于心脏缺血的检测,医疗装置暂停或禁止神经可兴奋的递送。