UAS-RBS: a Safety Study

Inclusion Criteria: * Benign Esophageal Refractory Stricture no more than 40 mm in length. * More than two dilations to at least 16 mm in diameter with symptoms relapse within 6 months. * Last dilation to 16 mm no more than 6 months before study procedure. * Dysphagia score of 2 (ability to swallow semi-solid foods), 3 (ability to swallow liquids only) or 4 (unable to swallow liquids) at the time of measurement. * Willing and able to comply with the study procedures and provide written informed consent to participate in the study. Exclusion Criteria: * Stricture within 2 cm of the upper esophageal sphincter. * Dysphagia related to motility disorder. * Planned adjuvant radiation therapy post esophagectomy. * Esophageal stent in place. * Active erosive esophagitis. * Sensitivity to any components of the stent or delivery system. * Concurrent medical condition that would affect the investigator's ability to evaluate the patient's condition or could compromise patient safety. * Currently enrolled in another clinical trial.