The product aseptic packaging, polyurethane material has excellent extensibility ( not easily broken pricking ) and comfort and extremely low allergenic, preoperative or check before it set on the B / Yin ultra probe directly, use the rubber band fixed protective cover at the front,middle , and using low viscosity strip fixed protection set of tail, can fully guarantee protection cover fixed on the probe and wiring harness, ensure that aseptic environment. Preoperative / postoperative one-time clearance, convenient cleaning, reduce the work intensity of medical staff.Aseptic protective cover is a product packed and sealed by composite paper and plastic bags, sterilized by ethylene oxide, and after passing various performance tests, it is supplied to medical units or individuals for use. After sterilization, the sterile protective cover shall only be used once as a sterile product and shall be destroyed after use.