由上海医用仪表厂研制的BJ-4型轻型便携式双踪心电示波仪于一月通过鉴定。该仪器体积为166×250×220毫米,重6.5公斤,可同时监查两个病人,信号可输出至电热笔记录器、心率计及中央监护系统。急救时,可使用三点式胸电极;门诊普查时,可 Developed by the Shanghai Medical Instrument Factory BJ-4 light portable dual-track ECG oscilloscope passed the appraisal in January. The instrument is 166 × 250 × 220 mm and weighs 6.5 kg. It can monitor two patients at the same time. The signal can be output to the electrothermal pen recorder, heart rate monitor and central monitoring system. First aid, you can use the three-point chest electrode; out-patient census, you can