The present disclosure relates to catheter assembly and components thereof. In one embodiment, a catheter assembly includes a catheter including a body with a proximal end and a distal end, wherein the body includes a first lumen and a second lumen. The lumens are substantially symmetrical and are joined together and split at the distal ends thereof. The distal ends are bent apart from each other such that the catheter resembles a Y-shape when viewed from the front. Each of the distal ends comprises a U-shaped cutout to prevent the inflow of blood from becoming blocked. Because the lumens are substantially equal in size, shape, and dimension, the connection can be reversed without high recirculation if one lumen is blocked.