Inspire Medical Systems, Inc. announced today that the U.S. Food and Drug Administration (FDA) has approved Inspire Upper Airway Stimulation (UAS) therapy for use in a subset of patients with moderate to severe Obstructive Sleep Apnea (OSA) who are unable to use Continuous Positive Airway Pressure (CPAP). Inspire therapy is a fully implanted neurostimulation device, the first of its kind for sleep apnea, that provides an alternative treatment that is proven, convenient and easy to use.