ImThera Medical says the FDA approved an investigational device exemption for a clinical study of its Aura6000 system for obstructive sleep apnea.ImThera Medical said the FDA approved its investigational device exemption application to initiate a clinical study for its Aura6000 System for obstructive sleep apnea.Food & Drug Administration (FDA), ImThera Medical Inc.News Well, Investigational Device Exemption (IDE), Sleep Monitoring/Sleep Apnearead more