Product Composition Disposable High Negative Pressure Drainage Device consists of a drainage bottle, a vacuum indicator, a guide tube, a guide tube lock plate, a female connector, a suspension strap, a male connector, a Connecting Tube, a Connecting Tube lock plate, a drainage tube connector, a drainage tube, a puncture needle, a protective cover, etc. The minimum initial vacuum negative pressure preset in the drainage bottle of the high negative pressure drainage device is not less than 80KPa. Intended Use: Suitable for disinfecting intact skin before injection and infusion. Advertising Approval No. Su Zhiguang Shen (text) No. 271025-27969