Zenker's diverticulum occurs as a result of impaired relaxation of the cricopharyngeal muscle primarily causing dysphagia. Affected are elderly patients with several comorbidities. By means of endoscopic intervention the septum is divided between the diverticulum and esophagus which allows unobstructed passage of food and liquids to the diverticulum into the esophagus. Advantages of this technique are manifold: usually general anesthesia is not required, the intervention can be performed in an outpatient setting or if necessary, hospital stay is short and the complication rate is low. Therefore, it is a suitable option for multimorbid patients. In approximately 90% of interventions symptoms of dysphagia are improved after the first treatment resulting in excellent effective medium term results in most cases.