Negative Pressure Wound Therapy for Skin Grafts

Exclusion Criteria

• •Allergic constitution of negative pressure dressing
• •Severe uncontrolled disease or acute systemic infections and complication with other serious heart, lung disease, encephalopathy and other organs or have a rapid progress or terminal disease
• •Subjects with mental illness
• •Subjects could not cooperate with the clinical trial personnel to finish trials
• •Existing disease (malignant tumor, autoimmune disease) or require the use of drugs (high-dose glucocorticoids, which is defined as accepting 40 mg or more daily prednisone or prednisone amount, period of two weeks or more) will affect the healing of the wound
• •For HIV positive patients, clinical diagnosis of patients with AIDS or the screening phase of neutrophil count (ANC) absolutely \< 1000 cells/mm3
• •Subjects could not tolerate surgery
• •Subjects are unlikely to survive in the study period
• •The investigators think that who should not be included
• •Subjects are in or participated in other clinical researchers over the past 12 weeks
• •Subjects are participated in this trial at any time in the past