Patent ID: 9498591
Filing Date: 2016-11-22
CPC Classification: A61M

Claim Text:
1. A laryngeal mask airway device for insertion into a patient to provide an airway passage to the patient's glottic opening, the device comprising an airway tube having an anatomically curved shape, a mask attached to the airway tube, the mask comprising a backplate having distal and proximal ends and dorsal and ventral sides, a peripheral inflatable cuff, and defining an outlet for gas, the mask being connected to the airway tube for gaseous communication between the tube and the mask, the device further comprising means to prevent occlusion of the outlet by the patient's anatomy, the means comprising a support, the support defining a support surface, and a conduit to allow gas to flow out of the outlet past the support, wherein the support is an outer surface of an oesophageal drain tube, the drain tube being formed integrally in the material of the backplate, wherein the airway tube and backplate comprise PVC, and wherein the backplate is softer and more deformable than the airway tube.