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本装置采用消除心电图中调搏脉冲干扰方法,将包含有调搏脉冲干扰的心电图同时输入二个触发器,第一路由常规门电路接收,第二路只接受高幅度的干扰脉冲,然后同时输入反符合电路,从而消除了干扰。整个电路由三块CMOS集成电路组成,具有心电,心音触发及经心房调搏脉冲剔除三种功能,用于核素心血管造影及经食道心房调搏核素心血管造影。
The device adopts the method of eliminating electrocardiogram pacing pulse interference, and the electrocardiogram containing the pacing pulse interference is input into two triggers at the same time. The first route is received by the conventional gate circuit, the second route only receives high-amplitude interference pulses, and then the input Anti-coincidence circuit, thus eliminating the interference. The entire circuit consists of three CMOS integrated circuits, with ECG, heart sounds triggered by the atrial pacing and pulse culling three functions for radionuclide angiography and transesophageal atrioventricular cardiogram.