Bioglass Wound Dressing in Treatment of Chronic Wound in Different Stage：a Randomized Controlled Trial

Inclusion Criteria: The patient is aged 18-80 years old; Ulcerative wounds; In the stage of stable necrosis or granulation growth; Voluntarily participate in this study and sign an informed consent form Exclusion Criteria: Severe diseases such as acute myocardial infarction, heart failure, hepatitis, shock, and respiratory failure have not been corrected yet; Uncontrolled blood glucose, Glucose test#Fasting blood sugar>15mmol/L, Glycated hemoglobin>12%; There is active bleeding inside the wound, and routine basic treatment plans cannot be implemented; Serum albumin < 20 g/L; Hemoglobin<60 g/L; Platelets<50 × 10^9/L; Spreading infection status, currently or about to be treated with antibiotics; Patients with advanced malignant tumors; Active period of autoimmune diseases; Previous allergies to bioactive glass ointment dressings (self originating); The patient is unable to cooperate or has mental disorders; According to the judgment of the researcher, the subject has a clear reason that cannot be removed and affects wound healing, which is not suitable for this study or cannot comply with the requirements of this study.