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

Inclusion Criteria: 1. The patient is aged 18-80 years old; 2. Ulcerative wounds; 3. In the stage of stable necrosis or granulation growth; 4. Voluntarily participate in this study and sign an informed consent form Exclusion Criteria: 1. Severe diseases such as acute myocardial infarction, heart failure, hepatitis, shock, and respiratory failure have not been corrected yet; 2. Uncontrolled blood glucose, Glucose test#Fasting blood sugar\>15mmol/L, Glycated hemoglobin\>12%; 3. There is active bleeding inside the wound, and routine basic treatment plans cannot be implemented; 4. Serum albumin \< 20 g/L; Hemoglobin\<60 g/L; Platelets\<50 × 10\^9/L; 5. Spreading infection status, currently or about to be treated with antibiotics; 6. Patients with advanced malignant tumors; 7. Active period of autoimmune diseases; 8. Previous allergies to bioactive glass ointment dressings (self originating); 9. The patient is unable to cooperate or has mental disorders; 10. 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.