A kit comprising an introducer sheath having a length, a proximal end, a distal end, and a lumen extending from the proximal end to the distal end and a dilator having a length a proximal end, and a distal end, the dilator being sized to be locatable within the lumen of the introducer sheath and having an outer geometric shape that defines at least two lumens between the introducer sheath and the dilator when the dilator is inserted into the introducer sheath lumen.
