Dilators are often used in plastic surgery. What are dilators? In short, it is a silicone rubber bladder used to expand the skin, increase the skin area, and repair defects. Large-area moles, hemangiomas, scars and other skin defects after resection on the head, face, trunk, limbs, etc. can all be treated with a tensioner. Li Tianshi, Department of Plastic Surgery, Peking University Shenzhen Hospital

Compared with traditional skin grafting surgery, expanders have many advantages. The expanded skin is softer in texture, has good color, is consistent with the thickness of the skin in the defect area, and has no secondary complications from the donor site. Sexual scars, etc. The disadvantage is that the repair cycle is long, usually taking about 4 months, two surgeries, and multiple water injections during the period. Despite these shortcomings, expander repair is still the first choice after surgery for scars, moles, and hemangiomas on the head and face, because the final results are far better than skin grafting.