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一、实验装置1.仪器及材料Y型管、20 mL 医用一次性废塑料注射器3支～5支(含针头,洗净)、双孔胶塞一个、废圆珠笔芯两段、医用一次性废塑料输液器(含轮式夹、头皮针,洗净)、双向玻璃尖嘴导管、胶帽3个～5个(可以直接用输液器排气葫芦上的乳胶帽;也可以将头皮针与注射器连接的接头剪下,小口用火封闭;还可以剪一小段废塑料输液管,一端用火封闭)。2.安装注射器①通过接头②(将头皮针与注器连接的接头剪
First, the experimental device 1. Instrument and material Y-tube, 20 mL medical disposable plastic syringe 3 to 5 (including needles, wash), a double hole plastic stopper, waste ballpoint pen two sections, medical disposable waste Plastic infusion set (including wheel clips, scalp needles, cleansing), bidirectional glass needle tip catheters, and plastic caps 3 to 5 (a latex cap can be used directly on the inhalator; the scalp needle and syringe can also be used The joint is cut off and the small mouth is closed with fire; a small piece of waste plastic infusion tube can also be cut and one end is closed with fire). 2. Install the syringe 1 through connector 2 (connect the scalp needle to the syringe