Reduced profile central venous access catheter with vena cava filter and method

1. A multi-lumen catheter comprising a single catheter body member, wherein the body member has a generally transverse cross-sectional shape having generally planar lateral side walls, a first curvilinear surface connecting one end of the two generally planar lateral side walls and a second curvilinear surface connecting a second end of the two generally planar lateral side walls;

the single catheter body member having formed therein a first lumen having a first transverse lumen profile and a second lumen having a second transverse lumen profile different from the first transverse lumen profile;

wherein each of the first lumen and the second lumen spaced apart and parallel relative to each other within the single catheter body member and each have a proximal opening and a distal opening such that fluid flow may pass therethrough; and

a sheath disposed about at least a longitudinal portion of the single catheter body member, in spaced apart relationship with the single catheter body member forming a fluid passageway between an inner surface of the sheath and an outer surface of the single catheter body member.

2. The multi-lumen catheter of claim 1 , further comprising a third lumen having a third lumen profile different from each of the first lumen profile and the second lumen profile, the third lumen being spaced apart and parallel relative to each of the first lumen and the second lumen within the single catheter body and the third lumen having a proximal and a distal opening such that either a reinforcing member may be disposed and retained therethrough or fluid flow may pass therethrough.

3. The multi-lumen catheter of claim 2 , wherein each of the first transverse lumen profile, the second transverse lumen profile and the third transverse lumen profile have a generally circular transverse cross-sectional profile.

4. The multi-lumen catheter of claim 2 , further comprising a fourth lumen having a fourth transverse lumen profile.

5. The multi-lumen catheter of claim 4 , wherein the fourth transverse lumen profile is similar to the third transverse lumen profile.

6. The multi-lumen catheter of claim 4 , wherein the fourth lumen has a proximal and a distal opening such that either a reinforcing member may be disposed and retained therethrough or fluid flow may pass therethrough.

7. The multi-lumen catheter of claim 1 , wherein the fluid passageway is generally annular.

8. The multi-lumen catheter of claim 7 , wherein the fluid passageway is generally non-annular.

9. The multi-lumen catheter of claim 1 , wherein the first curvilinear surface has a radius less than the second curvilinear surface.

10. The multi-lumen catheter of claim 1 , wherein first lumen and the second lumen are generally circular in transverse cross-sectional shape and the first lumen has a diameter less than a diameter of the second lumen.

11. The multi-lumen catheter of claim 1 , further comprising a vena cava filter member disposed concentrically about a distal end of the single catheter body member.

12. The multi-lumen catheter of claim 11 , wherein the sheath is concentrically disposed about the vena cava filter member and reciprocally moveable relative thereto.

13. The multi-lumen catheter of claim 12 , wherein the fluid passageway terminates proximal the vena cava filter member when the sheath is in a retracted state and distal the vena cava filter member when the sheath is in an extended state.

14. The multi-lumen catheter of claim 11 , wherein the distal opening of the first lumen terminates proximal the vena cava filter member.

15. The multi-lumen catheter of claim 14 , wherein the distal opening of the second lumen terminates distal the vena cava filter member.

16. The multi-lumen catheter of claim 11 , further comprising a third lumen having a third lumen profile different from each of the first lumen profile and the second lumen profile, the third lumen being spaced apart and parallel relative to each of the first lumen and the second lumen within the single catheter body and the third lumen having a proximal and a distal opening such that either a reinforcing member may be disposed and retained therethrough or fluid flow may pass therethrough;

further wherein the distal opening of the third lumen terminates in a plurality of openings arrayed along a longitudinal and circumferential axis of the single catheter body member and positioned between a proximal end and a distal end of the vena cava filter member.

17. The multi-lumen catheter of claim 11 , wherein the vena cava filter member is fixedly attached to the single catheter body member at a first end of the vena cava filter member and is reciprocally movable relative to the single catheter body member at a second end of the vena cava filter member.

18. The multi-lumen catheter of claim 11 , wherein the vena cava filter member is asymmetric along its longitudinal axis.