The Zilver 518 Biliary Stents are self-expandable stents made of nitinol. They are flexible, slotted tubes that provide strength and flexibility in the biliary duct upon deployment. post deployment, the stents impart an outwardly strong radial force upon the inner lumen of the duct, establishing patency in the designated stent region.
The Zilver 518 Biliary Stent system is preloaded in a 5.0 French (1.67 mm) delivery catheter. Stent deployment in controlled by retracting the handle while holding the metal cannula staionary.