LARYNGEAL MASK WITH TUBE INSTALLED OVER GLOTTIS Russian patent published in 2017 - IPC A61M16/04 

FIELD: medicine.

SUBSTANCE: laryngeal mask contains a tube placed above the glottis to insert the laryngeal mask head through the larynx. The tube, installed above the glottis, has three lumens, namely a respiratory lumen for respiratory air and instrumentation supply, an esophageal lumen for esophageal access and a proximally closed guide lumen passing medially between them. The tube installed above the glottis and the laryngeal mask head are made in one piece by injection moulding. Between the lateral lumen and the medial guide lumen, on the part of the tube length placed above the glottis, starting from the distal end, a slot passes connecting the two lumens. A mould for injection moulding for the laryngeal mask manufacture, where three parallel rods are provided to form a tube positioned above the glottis. The rod to forming the guide lumen and one of the adjacent rods, starting from the proximal end, are connected to each other in the distal direction by means of a stabilizing bridge.

EFFECT: increased wear resistance of rods, eliminated formation of films and membranes, reduced number of operations during production and control.

16 cl, 9 dwg