Bougie Sleeve Trial

Inclusion Criteria:

• Patients between 18 and 70 years

• Sleeve gastrectomy as a primary bariatric procedure

• Body Mass Index (BMI) > 40 kg/m² or > 35 kg/m² associated with at least onecomorbidity susceptible to improve after surgery (including arterial hypertension,obstructive sleep apnea syndrome and other severe respiratory disorders, severemetabolic disorders, particularly type 2 diabetes, incapacitating osteo-articulardisorders, non alcoholic steatohepatitis)

• Decision for intervention after multidisciplinary discussion

• Written informed consent

Exclusion Criteria:

• Previous upper abdominal surgery (cholecystectomy excepted)

• ASA (American Society of Anesthesiologists) score > 3

• Ongoing pregnancy or breast feeding

• Esophagus pathology or disorder (esophageal varices, esophageal diverticula,esophageal tumors, esophageal strictures)

• Coagulation disorder

• Patient not covered by social security service and patient on AME

• Patient under legal guardianship and trusteeship

• Patient with known silicon allergy (calibration bougie contains medical silicon)

• More generally, all other contraindications to the use of esophageal bougie MID-TUBEthat have been the subject of a scientific paper or have been identified by thepractitioner or practitioners