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传统的高频电刀系统由术者随机启动,对依赖起搏器的患者,如在起搏器警觉期启动,电刀干扰信号将抑制起搏脉冲而危及生命,因此术前必须将起搏器程控为固定频率模式工作,但可能导致竞争心律,甚至诱发心律失常,而在心电图R波后的心室不应期发生的干扰信号将触发起搏器的噪音反转功能,不抑制起搏脉冲,提示将R波作为电刀的启动信号可应用于起搏器依赖的患者.该系统拟采用美国亚德诺半导体公司(ADI)的ADuC847微控芯片,将经无源线性网络屏蔽电刀干扰信号采集到的心电信号进行模数转换处理后输送给R波识别电路,通过单稳态触发电路同步触发启动电刀,制备一种基于体表心电图R波控制的,在起搏器心室通道不应期启动并触发起搏器噪音反转,不需要程控起搏器工作模式即可用于起搏器依赖患者的高频电刀系统.“,”The traditional high frequency electric knife system starts randomly by the operator,if in ventricular alert period,it will inhibit pacing pulse release,this may lead to life-threatening cardiac arrest in patients with pacemaker dependent,therefore,pacemaker must be programmed as pacing with fixed rate mode which may lead to competition rhythm,and even induce arrhythmia.Interference signal in ventricular refractory period which from onset of the R wave will trigger pacemaker noise reversion and not inhibit pacing pulse,this indicate that take R wave as the start signal for high frequency electric knife can be used in patients with pacemaker dependent.The present study used the ADuC847 micro control chip of semiconductor companies in the United States and passive linear network to against the interference of high frequency electric knife,then processing the digital electrocardiosignal to R wave identification circuit after analog-to-digital conversioned,and synchronous triggering high frequency electric knife in ventricular refractory period by using monostable trigger circuit,and then triggering pacemaker noise reversion,so that a kind of high frequency electric knife system which controlled by the body surface electrocardiogram R wave can be used without pacemaker programming in patients with pacemaker dependent.[Chinese Journal of Cardiac Pacing and Electrophysicol,2017,,31(5):452-456.