Features：
1. Model is an adult torso, precise anatomical structure, clear landmarks
2. Perform abdominal shifting dullness percussion and abdominal cavity puncture
3. With control box and electronic LED light alarm system
4. Wrong puncture site will cause red light alarm, correct puncture can extract the simulated seroperitoneum and green light on
5. Equipped with replaceable puncture sac, the outer skin is removable