Cook® Amplatz Sheath – Opaque Product Information Used to maintain a previously established nephrostomy tract. Additional Information FURTHER INFORMATION Related products Add to cart Cook® Fascial Dilator Set – Urethral $0.00 Add to cart Cook® Flexor® Ureteral Access Sheath $0.00 Add to cart Cook® NCircle Tipless Stone Extractor $0.00 Add to cart Cook® UPJ Occlusion Balloon Catheter 6Fr $0.00 Add to cart Cook® Urethral Dilation Access Set $0.00