This product is designed on the principle that the skin tissue has the physiological function of naturally expanding and increasing area, the expended “additional” skin’s color, quality and even hair all meet the requirements, this new born skin flap is used in the repairation of the lack of the neighboring skin or the restoration of the scar, but it can not produce new abnormality, then ideal plastic surgery and aesthetic effect have been owned. The own channel design by Winner skin tissue expander can ensure safe and no leakage.