Laryngeal mask airway device

Intubation device as laryngeal mask (20) to simultaneously ensure intubation by the laryngeal inlet of the patient (67) and draining the patient's esophagus (57), characterized in that it comprises: - a gasbag main inflatable (40) which when inflated adopts the shape of a torus generated by an asymmetrical oval having a wider proximal region (42) and a narrower distal region (45), having air bag main hole inflation (56) attached to the proximal region and being a molded product of thin and deformable elastomer; - A backplate (27) having a concave laryngeal-side (81) and a convex pharyngeal-side (60) hermetically bonded to the periphery of the bag main air thereby establishing a gap between an area of ​​the laryngeal-chamber (110) and a throat area (112) having the backplate a fitting cannula (92) adjacent to the proximal region of the airbag, the fitting cannula on being and stretching after the laryngeal side to the pharyngeal region and including a passageway (105) passing through the back plate to communicate the pharynx area and the area of ​​the laryngeal chamber; - One distantly open internal drainage cannula 115 traversing longitudinally the interior of the distal region of the bag main and sealed to the air for operative engagement and communication with the inlet of the esophagus, through the cannula internal drain the laryngeal-chamber generally adjacent to the laryngeal side of the backplate to the passageway in the laryngeal side of the backplate and telescopically extending into the passageway, with a radial space defining an air port (30). - A cannula external drain (165) connected to the cannula internal drainage, and - a cannula air (22) attached to fitting the cannula to communicate with the air port to provide a flow path between the tube air and the area of ​​the laryngeal camera.