Multi-lumen catheter

A catheter for placement within a vessel of a patient comprising:

• an elongated catheter body having a proximal end and a distal end;
• a first lumen comprising a first internal wall at the distal end of the catheter that forms an input port, the first internal wall defining a substantially helical shape such that fluid flowing through the input port is deflected;
• a second lumen comprising a second internal wall at the distal end of the catheter that forms an out port, the second internal wall defining a substantially helical shape such that fluid flowing through the out port is deflected;
• and
• a septum extending longitudinally through at least a portion of the interior of the catheter body, thereby dividing the interior of the catheter body into the first lumen and the second lumen, wherein the septum does not extend beyond the input port and the out port.