CPAP is an acronym for "continuous positive airway pressure", a Flex or A-Flex in some CPAPs made by Respironics and EPR in ResMed machines. Founded in Australia , ResMed is now a global manufacturer of products for the apnea with nasal continuous positive airway pressure (CPAP). Australian firm ResMed , which is largest suppliers of CPAP technology au/research/health_and_medical/our_research/partnerships/resmed.