Efficacy of CryoBalloon Focal Ablation System on Human Esophageal Barrett's Epithelium

"The C2 Focal Cryoablation Device will be used for the treatment of islands of BE in real patient care. Ablation at 10 seconds will be tested and post-ablation symptoms related to the Cryoballoon Focal Ablation will be recorded. At 12 weeks, the patient will receive a follow-up endoscopy and biopsy samples will be taken.~Biopsy samples will be evaluated for the presence of residual Barrett's Esophagus. Through evaluation of the histological results, treatment parameters for the ablation of human esophageal epithelium will be better understood.~Evaluations include, but are not limited to the following:~* Device malfunctions~* Adverse events~* Patient Pain~* Histological evaluation of treatment zone at 12 weeks for presence of residual Barrett's Esophagus."