Catheter with tapered self-introducing low-recirculation distal tip

A low recirculation multi-lumen catheter, comprising:

• an elongated catheter body comprising a catheter top, a catheter bottom, a catheter first side, and a catheter second side;
• a proximal end;
• a distal end having a catheter tip;
• a first lumen extending from the catheter proximal end to the catheter distal end and a second lumen extending from the catheter proximal end to the catheter distal end, wherein the first lumen is substantially parallel to the second lumen;
• a septum comprising a septum first side adjacent the first lumen and a septum second side adjacent the second lumen, wherein the septum separates the first lumen from the second lumen;
• a central longitudinal axis extending from the catheter proximal end to the catheter distal end;
• a central longitudinal plane comprising the central longitudinal axis and extending from the catheter top to the catheter bottom;
• and
• a beveled shape region, having bilateral symmetry along the central longitudinal plane, comprising a first lumen orifice, a second lumen orifice, at least a portion of the septum first side, at least a portion of the septum second side, and a septum top surface;
• wherein
• the first lumen orifices and second lumen orifices locate entirely within the beveled shape region,
• the first lumen orifices and second lumen orifices having generally ovate shape;
• at least a portion of the septum first side and at least a portion of the septum top surface form a first eave over the first lumen;
• and
• at least a portion of the septum second side and at least a portion of the septum top surface form a second eave over the second lumen;
• the first eave and the second eave extends to at least half of the septum top surface;
• the first eave is configured to act as a baffle, when the first lumen is used to introduce fluid, to direct fluid flow out from the first lumen via the first lumen orifice, while restricting cross-over fluid flow to the second lumen;
• the second eave is configured to act as a baffle, when the second lumen is used to introduce fluid, to direct fluid flow out from the second lumen via the second lumen orifice, while restricting cross-over fluid flow to the first lumen;
• and
• the first eave comprises a region of the septum first side leading up into the septum top surface and a half of the septum top surface spanning from the central longitudinal plane to the first lumen orifice, the first eave have an arched shape that forms at least a portion of the first lumen orifice;
• and
• the second eave comprises a region of the septum second side leading up into the septum top surface and a half of the septum top surface spanning from the central longitudinal plane to the second lumen orifice, the second eave have an arched shape that forms at least a portion of the second lumen orifice.