The Nasopharyngeal airway is used in general anesthesia, intensive care and emergency medicine for airway management and mechanical ventilation. The tube is inserted into a patient's nose in order to ensure that the airway is not closed off and that air is able to reach the lungs. They made of medical grade PVC, the surface is soft and smooth, difference colors are available. The specification is from ID 2.5MM-9.0MM
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