Silverline® Antimicrobial Ventricular Shunt Catheter Silverline® Ventricular Shunt Catheters are indicated to be used in all patients with an indication for internal CSF-drainage. Silverline® Antimicrobial Ventricular Shunt Catheters are made of radiopaque implant grade silicone. They have numbered centimeter marks. A stylet and a trocar are delivered with the catheter. Silverline® Antimicrobial Ventricular Shunt Catheter are compatible with all manufacturers' shunt