Treatment of extensive deep burn residual wounds is a common problem in burn plastic surgery. Due to bacterial invasion, excessive maturation of granulation tissue, poor abrasion resistance of new epithelium, and coexistence of wound healing and dissolution can lead to delayed wound healing. Residual wounds rarely heal spontaneously and are prone to recurrence. Mesenchymal stem cells (MSC) boost tissue repair through paracrine. Many biological effectors, including IGF-1, vascular endothelial growth factor (VEGF), TGF-β1 have been found in MSC conditioned media (MSC-CM), and play a role in promoting tissue repair and regeneration.Our previous animal experiments have confirmed the role of MSC-CM in regulating wound inflammation, repairing damaged repair cells and promoting wound regeneration. In here, we will evaluate the safety and effectiveness of mesenchymal stem cell conditioned medium-derived pleiotropic factor in treating residual burn wound.

Inclusion Criteria:

Patients with thermal burns are all residual wounds that have not healed after 1 month; The distance between adjacent residual wounds of the same patient is greater than 10cm; Patients signing informed consent -

Exclusion Criteria:

Patients with severe heart, lung, liver, kidney, blood and mental system diseases; Combined with diabetes, hypertension and malnutrition; Patients with shock, severe systemic infections, and pregnant or lactating women. -

Need to contact the researcher and open sharing after the researcher's consent

One year after completion of the clinical trial

One year after completion of clinical trials