RESEARCH and T-SEARCH Long-Term Analysis Percutaneous Treatment of Left Main Coronary Artery Disease: A Combined Sirolimus-Eluting Versus Paclitaxel-Eluting Stent Implantation for the

The present application describes a velocity chamber to regulate a velocity of fluid between an outer diameter of a piston, and an insert to limit, reduce, etc. erosion against the tool and casing.