US Patent 11298494 User interface for supplying gases to an airway

A user interface convertible between a nasal configuration and an oral configuration. The user interface has a nasal cannula and a mouthpiece. The nasal cannula has a body portion and at least one prong extending from the body portion, the prong being adapted to direct a flow of gas into a nare of a user's nose. The mouthpiece is adapted to engage the mouth of the patient and direct a flow of gas into a user's mouth. In the nasal configuration the prong of the nasal cannula is adapted to direct a flow of gases into a nare of the patient. In the oral configuration, the nasal cannula is engaged with the mouthpiece such that a gases flow is provided to at least the mouth of the user.