The main function:
1. Oxygen inhalation
2. Nasal feeding
3. Gastric lavage
4. Duodenal Drainage
5. Double-balloon compression of food and gastric fundus
6. Arm injection
7. Subcutaneous injection
8. Intravenous injection
9. Intravenous infusion
10. Venipuncture
11. Male catheterization
12. Male bladder irrigation
13. The dressing of the wound is inserted into the fistula tube to stop the gauze drainage strip
14. Femoral vein, femoral artery puncture
15. Arm muscle injection
16. Enema
17. Female catheterization
18. Female bladder irrigation