The non-inflatable laryngeal mask is a kind of airway management device.Structurally, there is no inflat.able part and it is made of soft and elastic medical materials.When in use, the operation is simple and theinsertion is fast. There is no need to consider the inflation volume. it has high safety. There is no risk ofrupture of the inflatable cuff. The pressure on the throat tissue is relatively uniform. it can also stably sealthe airway to ensure ventilation.