Nasal cannulas including manifolds having nasal prongs and systems including same

An assembly, comprising:

• a gaseous supply tube;
• and
• a nasal cannula including a manifold coupled to the gaseous supply tube, the manifold including:
• a housing including an internal cavity;
• and
• a pair of nasal prongs extending from the housing, each of the pair of nasal prongs including:
• a first conduit extending from the housing and in flow communication with the internal cavity of the housing, the first conduit configured to supply oxygen to a patient;
• a second conduit positioned adjacent the first conduit, the second conduit configured to receive carbon dioxide (CO2) exhaled by the patient;
• and
• an internal wall separating the first conduit and the second conduit.

A system comprising:

• an assembly including:
• a gaseous supply tube;
• and
• a nasal cannula including a manifold coupled to the gaseous supply tube, the manifold including:
• a housing including an internal cavity;
• and
• a pair of nasal prongs extending from the housing, each of the pair of nasal prongs including:
• a first conduit extending from the housing and in flow communication with the internal cavity of the housing;
• a second conduit positioned adjacent the first conduit;
• and
• an internal wall separating the first conduit and the second conduit;
• a connector coupled to the housing of the manifold and in flow communication with the second conduit of each of the pair of nasal prongs;
• and
• a line coupled to and extending between the connector and a bite block.