Minimally Invasive Endoscopic Treatment of Zenker's Diverticulum Comparing LigaSureTM vs SB-Knife.

The main purpose of this trial is to evaluate two devices used in the treatment of Zenker Diverticulum using flexible endoscopy (LigaSure and SB-knife). Analyze the technical success, clinical success, relapses, complications, and the mean procedure time with each device prospectively in order to transfer objective and uniform results to routine clinical practice.

Inclusion Criteria: * Patients with endoscopically confirmed Zenker's diverticulum and presenting symptoms related to it. * Those who complete the symptom and quality of life questionnaires. * They must sign informed consent. Exclusion Criteria: * Previous treatment of Zenker's Diverticulum * Those for whom Zenker's diverticulum is ruled out at endoscopy. * Chewing disorders and/or dysphagia secondary to neurological pathology and Oesophageal motility disorders * Those who do not want to participate in the study and/or who do not sign the informed consent.