A HUMAN NECESSITIES
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A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61M DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
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A61M16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
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A61M16/04 Tracheal tubes
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A61M16/0488 Mouthpieces; Means for guiding, securing or introducing the tubes
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