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 Cook® Biodesign® Anal Fistula Plug $0.00 Read more Cook® CDES-550-Nathanson CBDE Set Add to cart KLS Martin marSeal5 Plus Maryland $0.00 Add to cart Pall LaparoShield Laparoscopic Smoke Filtration System $0.00 Read more Surgical Specialities ON-Q® Introducer Needle