Biostage, Inc. a biotechnology company developing bioengineered organ implants to treat cancers and other life-threatening conditions of the esophagus, bronchus and trachea, announced that its Cellspan™ Esophageal Implant was granted Orphan Drug Designation by the U.S. Food and Drug Administration (FDA) to restore the structure and function of the esophagus subsequent to esophageal damage due to cancer, injury or congenital abnormalities.