A catheter for extracorporeal circulation of body fluids, comprising: an elongate member having a proximal end defining an infusion port and a drainage port , a distal end defining a distal opening , a proximal portion extending from the proximal end toward the distal end , a distal portion extending from the distal end toward the proximal end along a first longitudinal axis, a main body extending between the proximal and distal portions along a second longitudinal axis substantially parallel to the first longitudinal axis and a circumferential wall extending between the proximal and distal ends ; the main body having a first outer diameter (xi) that is substantially uniform along the axial length of the main body ; the circumferential wall having an internal surface defining an internal lumen , defining an infusion opening , and defining a first set of drainage openings on the main body and a second set of drainage openings on the distal portion , the infusion opening and each drainage opening of the first and second sets of drainage openings comprising a passageway through the thickness of the circumferential wall ; a septum disposed on and continuous with the internal surface of the circumferential wall , the septum dividing the internal lumen into fluidicly isolated drainage and infusion lumens ; the drainage lumen extending between the drainage port and the distal opening , each opening of the first and second sets of drainage openings providing fluid access to the drainage lumen ; and the infusion lumen extending between the infusion port and the infusion opening , wherein the infusion opening is disposed on the distal portion , axially distal to the first and second sets of drainage openings and proximal to the distal opening . an elongate member having a proximal end defining an infusion port and a drainage port , a distal end defining a distal opening , a proximal portion extending from the proximal end toward the distal end , a distal portion extending from the distal end toward the proximal end along a first longitudinal axis, a main body extending between the proximal and distal portions along a second longitudinal axis substantially parallel to the first longitudinal axis and a circumferential wall extending between the proximal and distal ends ; the main body having a first outer diameter (xi) that is substantially uniform along the axial length of the main body ; the circumferential wall having an internal surface defining an internal lumen , defining an infusion opening , and defining a first set of drainage openings on the main body and a second set of drainage openings on the distal portion , the infusion opening and each drainage opening of the first and second sets of drainage openings comprising a passageway through the thickness of the circumferential wall ; a septum disposed on and continuous with the internal surface of the circumferential wall , the septum dividing the internal lumen into fluidicly isolated drainage and infusion lumens ; the drainage lumen extending between the drainage port and the distal opening , each opening of the first and second sets of drainage openings providing fluid access to the drainage lumen ; and the infusion lumen extending between the infusion port and the infusion opening , wherein the infusion opening is disposed on the distal portion , axially distal to the first and second sets of drainage openings and proximal to the distal opening . <EOS>