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The pharyngeal airway has become an indispensable part of the anesthetist's equipment. Heretofore, various forms have been made of metal; but metal airways are all more or less traumatizing, even when carefully used, frequently producing cut or bruised lips, chipped or broken teeth, or lacerations of the pharyngeal mucosa.
The airway herewith depicted is made of rubber and is sufficiently soft and flexible not to traumatize yet amply rigid to maintain an open oropharyngeal air passage under all conditions. Its flexibility permits it to conform to the varied oropharyngeal curves in different individuals.
The metal insert extends into the airway for about 2 cm. from the oral opening and prevents collapse of the rubber between the teeth.
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Guedel AE. A NONTRAUMATIC PHARYNGEAL AIRWAY. JAMA. 1933;100(23):1862. doi:10.1001/jama.1933.27420230001009
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