Patent ID: 6036654
Filing Date: 2000-03-14
Classification: A61B

Abstract:
A multi-lumen catheter system configured to accommodate various diagnostic and therapeutic procedures, comprising:a flexible elongated tubing portion having a longitudinal axis, an exterior wall and defining multiple lumens therein, including:an interior lumen positioned off-center with respect to the longitudinal axis to be closer to a first side of the exterior wall, and farther from a second side of the exterior wall opposite the first side, wherein the interior lumen is elliptically shaped in cross-section;a plurality of outer lumens defined within the tubing portion surrounding the interior lumen and generally between the interior lumen and the exterior wall, a pair of the outer lumens being positioned between the interior lumen and the first side and having smaller cross-sectional areas than the other outer lumens for an efficient lumen space utilization, and at least one outer lumen being larger than the interior lumen and being positioned generally between the interior lumen and the second side, wherein the offset interior lumen accommodates the differing sized outer lumens to optimize their relative sizes and positions.