Early Feasibility Study of Transcutaneous Upper Airway Stimulation in Obstructive Sleep Apnea

Inclusion Criteria: Provision of signed and dated informed consent form Stated willingness to comply with all study procedures and availability for the duration of the study Male or female, aged 18 years or older In good general health, as evidenced by medical history and diagnosed with moderate or severe OSA In-lab PSG, within the last 6 months, with an AHI of 15-50/hour. In addition, <25% of the respiratory events on the diagnostic PSG can be attributed to central apneas BMI less than or equal to 32 Exclusion Criteria: No or mild OSA (AHI <15/h) or very severe OSA (AHI >50/hour), exclusively postural sleep apnea, or isolated Rapid-Eye-Movement (REM) sleep associated OSA. Patients who are cachectic (BMI <18.5 kg/m2) or obese (BMI >32 kg/m2). Patients should not have enlarged tonsils (size 3-4) and/or adenoids, nasal polyps, neuromuscular disease, hypoglossal nerve palsy, abnormal pulmonary function tests, severe pulmonary hypertension, valvular heart disease, heart failure (New York Heart Association, NYHA III-IV), recent myocardial infarction, significant cardiac arrhythmias, atrial fibrillation, stroke, opioid usage, uncontrolled hypertension, known allergic reaction to adhesives or latex, active psychiatric disease, co-existing non-respiratory sleep disorder, pregnancy or significant metal implants or cardiac/other pacemakers. Patients with facial hair that affects the correct placement of the electrodes, if they are unwilling to shave.