This fixed flange nasopharyngeal airways - this RUSCH nasopharyngeal airway (NPA)
has a fixed flange as preferred by many professionals. It's more compatible
with human anatomy than the standard oropharyngeal airway (OPA), and is
recommended for use as a nasal airway adjunct in semi-conscious or unconscious
patients with an intact gag reflex.
The nice thing about the NPA is that it remains steady during transport and
is not easily dislodged.