With a standard microcatheter, non-target flow is unavoidable since blood and embolic agents flow simultaneously into the tumor and branch arteries leading to healthy tissue. Normal hepatic arterial flow will overwhelm the tumor’s capacity to accept the flow after embolization begins. This causes high intratumor pressure and reflux of blood and embolic agents out of the tumor.
Embolx Sniper Microcatheter
Using Sniper, a temporary occlusion produced by the microballoon causes an immediate drop in pressure and flow rate in the vascular space distal to the occlusion. The pressure reduction causes branch hepatoenteic arteries and capillaries to redirect toward the tumor. The redirected flow moves slower than the un-occluded hepatic artery, allowing particles to flow into the tumor in a more controlled fashion. Flow is also moving away from healthy tissue which reduces or eliminates non-target embolization.