日本光电公司的2101型心电图机的热笔损坏后有时不易购到。作者曾用国产 HB-1型心电图机(石家庄医用电子仪器厂产品)的热笔来代用,效果尚满意。HB-1机热笔的内阻、工作电压等参数与2101机的热笔基本一致,外型尺寸也大致相同。但两种热笔的插头不一样,而且2101机热笔插头不易拆卸。两种笔架间尚有少许 Japan’s optoelectronic 2101-type ECG hot pen sometimes damaged after the purchase is not easy. The author has used domestic HB-1-type electrocardiogram machine (Shijiazhuang Medical Electronic Instrument Factory products) hot pen to substitute, the effect is still satisfactory. HB-1 machine hot pen resistance, working voltage and other parameters and 2101 machine hot pen basically the same size and appearance are about the same. But the two hot pen plugs are not the same, and 2101 hot pen is not easy to disassemble. There is still a little between the two penholder