Instead of occlusion rim, single patient use, reduce cross-infection;Soft neck-tie, fixed firmly, easy to operate, comfortable for patients;Rational-designed, easy for doctors to use;Triangle-designed with delicate screw can keep the endotracheal intubation fixed firmly.Can fix disposable endotracheal tube, disposable stengthen endotracheal tube,
disposable double-lumenendotracheal tube, disposable laryngeal mask airway etc.