A catheter assembly includes a flexible catheter having a lumen, a hub having a body including a proximal end and a distal end, the body defining a passageway extending from the proximal end to the distal end, the hub being coupled to one end of the catheter, and the passageway of the hub being in fluid communication with the lumen of the catheter, and a coupler including a base coupleable to and detachable from the hub, the base being coupled to at least one introducer assembly, each of the at least one introducer assembly including a port, a tubing and a hollow needle.