一.引言植入式除颤器(implantable defibrillator)是一种植入体内的能自动检测心室颤动且对心脏施加强电刺激的装置。众所周知心室扑动和颤动是心室各部分发生快速微弱无效的收缩或快而不协调的杂乱颤动,心室扑动和颤动时心室丧失排血功能,即没有血液从心脏泵出,是一种最严重的心律失常,因此必须在病发后的5分钟之内或更短的时间内就使用复苏术消除颤动,使心室肌细胞恢复同步,其方法是施加一个强电刺激于心脏,这 I. INTRODUCTION Implantable defibrillators are devices implanted in the body that automatically detect ventricular fibrillation and apply strong electrical stimulation to the heart. Ventricular flutter and fibrillation are well-known to occur in all parts of the ventricular rapid weak ineffective contraction or fast and uncoordinated chaos flutter, ventricular flutter and ventricular fibrillation loss of blood flow, that is, no blood pump out from the heart, is one of the most serious Of the arrhythmia, it must be within 5 minutes after the onset of disease or less time on the use of resuscitation to eliminate fibrillation, so that ventricular myocytes are synchronized, the method is to impose a strong electrical stimulation in the heart, which