Cook® Nathanson Liver Retractor Product Information Used to fully support and retract the liver during laparoscopic upper GI surgery, enabling a better view of the operating field. Supplied non-sterile. Intended for reuse. Related products Add to cart BFW™ AtoN™ $0.00 Add to cart Cook® Biodesign® Fistula Plug Set $0.00 Add to cart Cook® Laparoscopic Pelvic Retractor $0.00 Add to cart Cook® Medical Biodesign® for Sugarbaker Technique $0.00 Read more Surgical Specialities ON-Q® Introducer Needle