Modified Double-D™ lumen design provides equal and consistent flow rates through the venous and arterial lumens with the benefit of a completely independent third lumen for infusion, which does not affect flow rates through the dialysis lumens. Flexible polyurethane material, thermosensitive catheter material provides optimal stiffness during insertion and softens up to 50% post-insertion for vessel conformity and patient comfort. Radiopaque polyurethane allows for quick and easy visualization during diagnostic imaging. Third infusion lumen provides a third, independent, 19G infusion lumen that can be treated as a dedicated line for blood access and fluid or medication delivery. Laser-cut side slot Improves catheter flow rates and reduces the likelihood for positional occlusion and clot formation by minimizing debris attachment. Soft, atraumatic green tip reduces the likelihood of vessel trauma during insertion.