Study Using Negative Pressure to Reduce Apnea

This is a multi-center, single-arm, prospective, observational intervention study to determine the safety and effectiveness of the aerSleep II System. Up to 900 subjects will be enrolled at up to 30 study sites in the United States and outside the United States to ensure that approximately 79 subjects who are termed initial responders can be evaluated after 24 weeks of home use with the aerSleep II device. As part of screening and prior to intervention, home sleep testing will be performed to establish baseline apnea-hypopnea index (AHI). Subjects meeting study criteria will wear the aerSleep II device at home. After a 1-week period of acclimation, subjects will have a second HST (HST #2). Initial responders with a ≥50% reduction in AHI from baseline with an AHI \<20/hour will be continued on home treatment. Non-responders will be discontinued from the study. After 12 weeks, subjects will have an interim home sleep study. After 24 weeks of home use, subjects will have HST #4 to determine the primary effectiveness endpoint.