Patent ID: 8517978

Claim:
A catheter for placement within a vessel of a patient comprising an elongated catheter body having a proximal end, a distal end, a longitudinal axis, and a septum extending longitudinally through the interior of the catheter body from the proximal end to the distal end thereof dividing the interior of the catheter body into a first lumen and a second lumen each having curved or angled internal walls at the distal end of the catheter, wherein each interior wall defines a substantially helical transition zone for the gradual deflection of fluids helically, in three dimensions, and terminates in a side-facing port, wherein each lumen and at least one port is at least partially defined by a distally facing curved wall, wherein the ports are positioned on opposite sides of the longitudinal axis, and wherein the distally facing curved walls are inversely positioned relative to each other on opposites sides of the longitudinal access.