Nexiva IV Catheter 20 Gauge 1" Closed End System, BD 383592 (20/Box)BD Nexiva Diffusics Closed IV Catheter (20G 1, BD #383592) This is a sterile, single use peripheral IV catheter (20 gauge, 1 inch length) from BDs Nexiva closed IV catheter family. It has a closed end design (no builtin needle free port) and comes with an attached extension tubing (a closed system). Diffusics Tip for CT Injection: It is the Diffusics version of Nexiva, meaning the catheter tip has three laser cut teardrop holes to diffuse contrast