A Study to Evaluate the Effectiveness and Safety of EUS-guided Transluminal Drainage With 'Niti-S SPAXUS Stent'

Inclusion Criteria: * Pancreatic pseudocyst ≥6cm in size, with ≥70% fluid content that is eligible for transluminal drainage * Patient willing to provide written informed consent and comply with follow-up requirements Exclusion Criteria: * Ineligible for endoscopic intervention * Pancreatic pseudocyst with severe internal septation * Platelet count \< 60,000 cells/mm3 or international normalized ratio (INR) \>1.5 * Hemodynamic instability (e.g. shock) * Active infectious disease (e.g. endocarditis, meningitis) * Participating in any other investigational drug or device clinical trial within past 3 months * Female of child-bearing potential who are unable to take adequate contraceptive precautions, are known to be pregnant, or are currently breastfeeding an infant