Health-economic Assessment of Robot-assisted Bariatric Surgery

Inclusion Criteria: * Patient aged between 18 and 70 years old, * Female or male patients * Patient eligible for one of the two situations defined below: 1. Primary bariatric or metabolic surgery, with a BMI corresponding to one of the 3 following situations, in accordance with the french National Authority for Health (HAS) recommendations published in February 2024: * 40 kg/m² OR * 35 kg/m² with at least one comorbidity that may improve after surgery (e.g.: high blood pressure, sleep apnea syndrome and other severe respiratory disorders, type 2 diabetes, disabling osteoarticular diseases, steatohepatitis not alcoholic, dyslipidemia, osteoarthritis) OR between 30 and 35 kg/m² with uncontrolled type 2 diabetes 2. Revision surgery for complication and/or side effects of a previous bariatric surgery * Patient who has benefited from a pluridisciplinary evaluation (medical, surgical, psychiatric), with a favorable opinion for a bariatric. * Patient who agrees to be included in the study and who signs the informed consent form, Exclusion Criteria: * Presence of a severe and evolutive life threatening pathology, unrelated to obesity, * Pregnancy or desire to be pregnant during the study, * Patient not affiliated to a French or European healthcare insurance, * Patient under supervision or guardianship * Patient who is unable to give consent, * Patient who does not understand French * Patient who has already been included in a trial which has a conflict of interests with the present study