Products Name:High Negative Pressure Sealed Drainage Bottle; Type:400ml/600ml. Advantages:1. Thoroughly effective drainage of cavity blood and secretions; 2. High vacuum negative pressure effectively avoids infection caused by the reflux of secretions. 3. Stimulate the blood vessels growth in and healthy granulation tissue formation. 4. Be good for the postoperative diagnosis. 5. Reduce the time of dressing change; Shorten the time of treatment, and relieve pain. 6. Reduce the wound infection rate, minimize the risk of complications. Applicable Scope :Orthopedics; Breast; Thyroid; Abdominal operation.