This proof-of-concept study will evaluate the impact of surgically placing and stimulating the hypoglossal nerve and/or a second neural target Ansa Cervicalis, with a set of off-the-shelf electrode arrays.

Inclusion Criteria:

• Age above 18 years not under guardianship, under curatorship or under judicial protection.
• Body Mass Index (BMI) < 35 kg/m2.
• Subject suffers from OSA (15 < AHI < 80) documented by a sleep study performed during the past 36 months.
• Subject must be eligible for a diagnostic or surgical procedure.
• Written informed consent obtained from the patient prior to performing any study specific procedure.
• Willing and capable to comply with all study requirements, including specific lifestyle considerations, evaluation procedures and questionnaires for the whole duration of the trial.

Exclusion Criteria:

• Major anatomical or functional abnormalities that would impair the ability of the electrode arrays to be positioned
• Significant comorbidities that contraindicate surgery or general anesthesia
• Significant tongue weakness
• Any other chronic medical illness or condition that contraindicates a surgical procedure or general anesthesia in the judgment of the investigator.
• Prior surgery or treatments that could compromise the placement and effectiveness of the electrode array systems:
• Airway cancer surgery or radiation,
• Mandible or maxilla surgery in the previous 3 years (not counting dental treatments),
• Other upper airway surgery to remove obstructions related to OSA in the previous 3 months (e.g., uvulopalatopharyngoplasty (UPPP), tonsillectomy, nasal airway surgery),
• Prior hypoglossal nerve stimulation device implantation.
• Currently pregnant, or breastfeeding during the study period