Catheter Tunneler adapter

An adapter assembly ( 120 ) for connecting a catheter assembly ( 50,52 ) to a tunneler ( 110 ) having a generally tubular body ( 122 ) having a first end ( 124 ), a second end ( 126 ) and a longitudinal axis ( 128 ) extending therethrough between the first end and the second end. The first end ( 124 ) of the adapter is constructed to engage the proximal end ( 114 ) of a trocar ( 110 ). The second end ( 126 ) of the adapter is constructed to releasably engage at least one catheter lumen ( 50,52 ). A slider ( 140 ) is disposed about the adapter ( 120 ) and is longitudinally slidable along the adapter. When the slider ( 140 ) is slid towards the second end ( 126 ) of the adapter, the slider engages a plurality of legs ( 134 a- 134 d) on the adapter and biases the plurality of legs toward each other and the longitudinal axis of the adapter. A method of subcutaneously tunneling a catheter using the adapter assembly is also described that comprises inserting a catheter into a patient, connecting the proximal end of a trocar to the adapter assembly, releasably restraining at least one lumen of the catheter in the adapter, and tunneling the assembly.