The invention relates to an artificial airway device to facilitate lungventilation of a patient,comprising an airway tube, a gastric drain tube and a mask at one end of theairway tube, themask including a backplate and having a peripheral formation capable offorming a sealaround the circumference of the laryngeal inlet, the peripheral formationsurrounding a hollowinterior space or lumen of the mask and the airway tube opening into the lumenof the mask,wherein the mask includes an atrium for passage to the gastric drain tube ofgastric matterleaving the oesophagus.