Cook® Whistle Tip Ureteral Catheter Product Information Used for drainage and retrograde pyelogram. Additional Information FURTHER INFORMATION Related products Add to cart Cook® Dual Lumen Ureteral Access Catheter $0.00 Add to cart Cook® Grasping Forceps $0.00 Add to cart Cook® Peel-Away Introducer Sets $0.00 Add to cart Cook® Ultraxx™ Nephrostomy Balloon $0.00 Add to cart Cook® Ureteral Dilator Set $0.00