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    • 121. 发明授权
    • Biomedical method and apparatus for controlling the administration of
therapy to a patient in response to changes in physiologic demand
    • 生物医学方法和装置,用于响应于生理需求的变化来控制对患者的治疗施用
    • US4686987A
    • 1987-08-18
    • US362903
    • 1982-03-29
    • Rodney W. SaloBrian D. Pederson
    • Rodney W. SaloBrian D. Pederson
    • A61N1/365A61N1/36
    • A61N1/36521
    • A biomedical apparatus capable of sensing changes in the heart's ventricular volume or stroke volume and then changing the operating performance of the device in a fashion as a function of stroke volume. A relatively low frequency signal (under 5 KHz) is applied between spaced electrodes disposed in the heart and the beating action of the heart serves to modulate this signal due to changes in impedance being sensed between these or other electrodes within the heart. The modulated carrier signal is then processed to remove R-wave and other electrical artifacts and then demodulated to remove the carrier frequency component leaving the envelope which is proportional to instantaneous ventricular volume. This envelope signal then contains stroke volume and ventricular volume information which can be used by the biomedical apparatus to vary its operating parameters. For example, a current proportional to changes in stroke volume may be injected into the timing circuit of a demand-type cardiac pacer pulse generator whereby the interpulse interval of the pulse generator is varied as a function of stroke volume.
    • 一种生物医学装置,其能够感测心脏体积或冲程体积的变化,然后以作为行程体积的函数的方式改变装置的操作性能。 相对较低的频率信号(低于5KHz)被施加在设置在心脏中的间隔电极之间,并且心脏的跳动作用是由于在心脏内的这些或其它电极之间感测的阻抗的变化来调制该信号。 然后处理调制载波信号以去除R波和其他电气伪影,然后解调以去除离开与瞬时心室容积成比例的包络的载波频率分量。 然后,该包络信号包含可由生物医学装置用于改变其操作参数的搏动体积和心室容积信息。 例如,与笔画体积变化成比例的电流可以被注入到需求型心脏起搏器脉冲发生器的定时电路中,由此脉冲发生器的脉冲间隔作为行程体积的函数而变化。
    • 122. 发明授权
    • Temperature based systems and methods for tachycardia discrimination and therapy
    • 用于心动过速鉴别和治疗的基于温度的系统和方法
    • US08255052B2
    • 2012-08-28
    • US12411157
    • 2009-03-25
    • Rodney W. SaloAllan Charles ShurosDan Li
    • Rodney W. SaloAllan Charles ShurosDan Li
    • A61N1/36
    • A61N1/3622A61N1/3962
    • Embodiments of the invention are related to an implantable medical system, amongst other things. In an embodiment, the invention includes a processor, an electrical sensor, and a temperature sensor. The processor is configured to monitor myocardial electrical activity with input from the electrical sensor; identify myocardial electrical activity indicative of an arrhythmia, measure temperature of blood in the coronary venous system with input from the temperature sensor; determine if the arrhythmia is hemodynamically stable or hemodynamically unstable based on the temperature of blood in the coronary venous system, and initiate high-voltage shock therapy if the arrhythmia is hemodynamically unstable. Other embodiments are also included herein.
    • 本发明的实施例涉及可植入医疗系统等。 在一个实施例中,本发明包括处理器,电传感器和温度传感器。 处理器被配置为通过来自电传感器的输入来监测心肌电活动; 识别指示心律失常的心肌电活动,用来自温度传感器的输入测量冠状静脉系统中血液的温度; 根据冠状静脉系统中的血液温度,确定心律失常是否为血液动力学稳定或血液动力学不稳定,如果心律失常是血液动力学不稳定的话,开始进行高压休克治疗。 本文还包括其它实施例。
    • 130. 发明授权
    • Apparatus and method for optimizing cardiac performance by determining
the optimal timing interval from an accelerometer signal
    • 通过从加速度计信号确定最佳定时间隔来优化心脏性能的装置和方法
    • US5836987A
    • 1998-11-17
    • US815697
    • 1997-03-12
    • Lawrence S. BaumannBruce A. TockmanRodney W. SaloEmanuel H. Silvermint
    • Lawrence S. BaumannBruce A. TockmanRodney W. SaloEmanuel H. Silvermint
    • A61N1/362A61N1/365A61N1/368
    • A61N1/36542A61N1/3627A61N1/3682
    • A cardiac stimulating apparatus and method which optimizes cardiac performance by determining, from a filtered waveform transmitted from an accelerometer contained within the cardiac pacer, an optimum timing interval between at least one of intrinsic and paced stimulations of pre-selected chambers of the heart. Digitized data of the accelerometer signal, corresponding with identified R--R intervals, are stored for a plurality of preselected timing intervals for analysis and comparison. The accelerometer signal is filtered to isolate features of the waveform associated with specific cardiac events including for example, the first heart sound, the second heart sound or an amplitude in the frequency domain thereof. Characteristic values of these features of the accelerometer signal are calculated over a plurality of complete R--R intervals for each of the preselected timing intervals. The characteristic values are analyzed and compared to determine which timing interval optimizes cardiac performance. The cardiac stimulating apparatus and method may be used in any of several pacing modes including A-V pacing, V--V pacing, or A--A pacing.
    • 一种心脏刺激装置和方法,其通过从包含在所述心脏起搏器内的加速度计传输的经过滤波的波形确定心脏预先选择的腔室的内在和起搏刺激中的至少一个之间来优化心脏性能。 对应于识别的R-R间隔的加速度计信号的数字化数据被存储用于多个预选的定时间隔用于分析和比较。 过滤加速度计信号以分离与特定心脏事件相关联的波形的特征,包括例如第一心音,第二心音或其频域中的振幅。 对于每个预选的定时间隔,在多个完整的R-R间隔上计算加速度计信号的这些特征的特征值。 对特征值进行分析和比较,以确定哪个时间间隔优化心脏性能。 心脏刺激装置和方法可以以包括A-V起搏,V-V起搏或A-A起搏的多种起搏方式中的任何一种使用。