A multilumen curved split-tip catheter comprises a proximal end, a distal end and an elongated portion arranged between a proximal end and a distal end, defining a longitudinal axis. Elongated portion includes triple lumens for a blood flow therethrough, two arterial lumens and one venous lumen. The triple lumens are fixed to make a venous lumen is located between two arterial lumens along the length of the catheter to two dividing points. Also, the triple lumens are not at the same level with respect to each other inside a blood vessel after insertion. Each lumen extends between a distal end and a proximal end and includes a port at a distal end thereof in a communication with the lumen. Distal end has three curved distal segments that are splitted (separated) from each other with respect to a longitudinal axis.
