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套管针：套管直径1．2mm，套管长45mm，针柄长25mm，可直接与输液器相连，滴入液体速度为97ml／分，针柄处可活动双翼便于固定。穿刺方法：患者排空膀胱后取平卧位，选择好穿刺点，局部皮肤常现消毒，将套管针垂直于腹壁分层刺入，进入腹腔（有空落感）后拔出针芯，接生理盐水
Trocar: The diameter of the cannula is 1.2mm. The length of the cannula is 45mm. The length of the cannula is 25mm. It can be directly connected to the infusion set. The liquid drip rate is 97ml/min. The movable wings of the handle can be easily fixed. Puncture method: After emptying the bladder, the patient takes a supine position, selects a puncture point, and the local skin is often disinfected. The trocar is inserted vertically into the abdominal wall, and the needle is pulled out after entering the abdominal cavity (airborne feeling). Normal saline