Necrosectomy With Cryotechnology for Accelerated Removal

Subjects undergo necrosectomy with 1.7 mm flexible cryoprobes, either concurrently with stent placement or post-placement, at the Investigator's discretion. The cryoprobe will freeze the necrotic tissue and extracted en-bloc. A maximum of 4 cryotechnology procedures will be performed, with each procedure aiming for significant debris removal and clinical improvement of walled-off pancreatic necrosis (WOPN) symptoms.