Study of the WallFlex™ Biliary Partially-covered Stent for the Palliative Treatment of Malignant Bile Duct Obstruction

Exclusion Criteria

• •Participation in another invesitgational study within 90 days prior to date of patient consent.
• •Strictures that cannot be dialated enough to pass the delivery system
• •Perforation of any duct within the biliary tree
• •Presence of any esophageal or duodenal stent
• •Patients for whom endoscopic procedures are contraindicated
• •Patients with known senesitivity to any components of the stent or delivery system
• •Patients with active hepatitis