A<unk>  has an<unk>  tube that connects to an elliptical<unk>  with a cuff. The cuff can either be an inflating type (achieved after insertion using a syringe of air), or self-sealing. A<unk>  must first be completely sterilised (it may be reused many times). Standard checks for common use defects should be performed (such as cracks in the plastic). For an inflatable cuff, the cuff should be inflated and deflated outside the patient to ensure it is functional. A pen-like grip is used to move it through the patient's mouth and throat, preferably when their head is extended to straighten the<unk> . The<unk>  should be lubricated so that it can be placed more easily. Once inserted correctly (and the cuff inflated where relevant), the<unk>  conforms to the anatomy with the bowl of the<unk>  facing the space between the vocal cords. The tip of the<unk> <unk>  sits in the throat against the upper oesophageal sphincter.
Laryngeal mask airway
Venturi mask
N95 respirator
Elastomeric respirator
Electrolarynx
Nasal cannula
Chondrolaryngoplasty
Nasal irrigation