Cook® Whistle Tip Ureteral Catheter Product Information Used for drainage and retrograde pyelogram. Additional Information FURTHER INFORMATION Related products Add to cart Cook® HiWire™ Nitinol Core Wire Guide $0.00 Add to cart Cook® Roadrunner® PC Wire Guide – Double Flexible $0.00 Add to cart Cook® Standard Fixed Core Wire Guide $0.00 Add to cart Cook® Ureteral Dilator Set $0.00 Add to cart Cook® Urethral Dilation Access Set $0.00