Bariatric surgery is the most effective method of treating obesity and related metabolic disorders. Bariatric surgery leads to a steady loss of excess body weight and compensation of comorbidities associated with obesity in the first postoperative period. In the context of LSG, one of the potential complications is the failure of the staple suture line. Currently, there are many methods for correcting this complication. Endoscopic methods are new and promising directions for the correction of this condition. Endoscopic treatment of failure after LRRR in patients with morbid obesity is becoming an important aspect of modern surgical practice. Endoscopic methods, such as stenting, clipping of the defect with standard clips and clipping devices (OTSC), using a vacuum-aspiration system, are effective in repairing the wall defect without the need for repeated open surgery. This is important, especially in the context of patients with morbid obesity, for whom repeated surgical intervention may be significant. The study and implementation of endoscopic methods of repair of leakage in patients after LRR is an important area for improving the results of treatment of this special patient category.