公开(公告)号：US4140131A

公开(公告)日：1979-02-20

申请号：US738298

申请日：1976-11-03

申请人： Robert G. Dutcher ,  Paul Citron ,  Thomas L. Jirak

发明人： Robert G. Dutcher ,  Paul Citron ,  Thomas L. Jirak

IPC分类号： A61N1/08 ,  A61N1/37 ,  A61N1/36

CPC分类号： A61N1/3706 ,  A61N2001/083

摘要： Apparatus for stimulating body tissue and in particular the heart, is disclosed as including a device or circuit responsive to the initiation of stimulation and/or to the failure or pending failure of a component of the stimulating apparatus to provide the patient with a perceivable stimulation to a second, different portion of body tissue. There is disclosed an impedance level detector for sensing the impedance presented between the outputs of the stimulation apparatus to provide a warning signal indicating that the output impedance falls outside a predetermined range. In particular, the impedance level detector output is sensed by a stimulation control logic to apply a first train of pulses at a first rate to an auxiliary electrode for stimulating the second portion of tissue. Further, there is included a voltage level detector for sensing when the power source voltage depletes below a predetermined level, to actuate the stimulation control logic to provide a second train of warning pulses to the auxiliary electrode, at a second, different rate than that of the first train. In this fashion, the patient not only is warned as to the pending failure or failure of a component of his pacemaker, but also is able to identify the failing component.

摘要翻译： 用于刺激身体组织，特别是心脏的装置被公开为包括响应于刺激开始和/或刺激装置的部件的故障或未决故障而向患者提供可感知刺激的装置或电路 身体组织的第二个不同部分。 公开了一种用于感测刺激装置的输出之间呈现的阻抗的阻抗水平检测器，以提供指示输出阻抗超出预定范围的警告信号。 特别地，阻抗电平检测器输出由刺激控制逻辑感测，以将第一速率的第一脉冲序列施加到辅助电极，以刺激组织的第二部分。 此外，还包括电压电平检测器，用于在电源电压耗尽低于预定电平时感测，以致激励控制逻辑以向辅助电极提供第二列警告脉冲，其速率不如 第一列火车 以这种方式，患者不仅被警告起搏器的组件的未决故障或失败，而且还能够识别故障组件。