Evolution of Supraglottic Airway Devices

Abstract

About forty years have passed since the arrival of the supraglottic airway device（SGD） “laryngeal mask airway”. The strongest advantage of the SGD is to be able to perform airway management rapidly compared with other new airway devices. In addition, the SGD can be inserted easily and ventilated in all situations. In the future, an evolution of the SGD must be performed and provided safe airway management.