Development and Experimental Study of a Polytetrafluoroethylene-Tipped Microcatheter Poorly Adhesive to n -Butyl-2-Cyanoacrylate.

The NSX microcatheter with a PTFE tip adheres less strongly to NBCA than do conventional microcatheters and allows the safe injection of NBCA. The NSX microcatheter has double platinum markers on its tip, which make it easy to distinguish the PTFE-covered region. As the NSX does not adhere firmly to the arterial wall, it is less likely to cause vascular injury during removal of the catheter compared with conventional microcatheters, so there is no need to remove the NSX immediately after injecting NBCA. Even operators unfamiliar with NBCA can use NBCA safely with this new NSX microcatheter without requiring special training or skill.