Cook® Amplatz Sheath – Opaque Product Information Used to maintain a previously established nephrostomy tract. Additional Information FURTHER INFORMATION Related products Add to cart Cook® Balloon Ureteral Dilator $0.00 Add to cart Cook® Grasping Forceps $0.00 Add to cart Cook® NCircle Tipless Stone Extractor $0.00 Add to cart Cook® Rhapsody H-30® Holmium Laser System $0.00 Add to cart Cook® Ultraxx™ Nephrostomy Balloon $0.00