The present disclosure relates to the field of endovascular treatment. More particularly, the present invention is a tool designed to implement an endovascular treatment by the implementation of two or more lumens on a microcatheter and/or having a side hole in a single lumen. The present invention ameliorates the medical difficulty associated with making a good plug to prevent reflux of liquid embolic along catheter and maximize distal penetration, usually in treatment of arteriovenous malformations (AVM) and arteriovenous fistulas (AVF).
