Wound Drainage reservoir Portable spring-activated reservoir for closed-wound suction. The clear reservoir sidewalls with volume. Feature: 1. Superior biocompatibility, flexibility and great comfort to patient, which delivers extremely low tissue response to wound, which minimize possible tissue adhesion. 2. Universal stepped adapted allows connecting to kinds of suction tube. 3. Embedded X-ray thread enables easy detection and position of suction tube. 4. Atraumatic tip less pain of patient. 5. Quality anti-reflux valve totally eliminates liquid reflux. 6. Quality Robert clamp can easy cut the flow. Unit consists of: 1. Bellow unit with connectors 2. Connecting tube with clamp and Y connector. 3. Spare redon drain (perforated) catheter. Sterile, non-toxic.