Tunneler for bi-directional tunneling

A tunneler, comprising:

• a hollow elongate tunneler body defining a lumen extending between open proximal and distal ends;
• and
• a tip covering the distal end of the tunneler body and shaped to assist in defining a subcutaneous tunnel, wherein the tip is removable from the tunneler body after defining the tunnel so as to enable a catheter to pass through the lumen of the tunneler body.

A tunneler, comprising:

• an elongate tunneler body sized to be received within a lumen of a catheter;
• and
• a tip disposed at a distal end of the tunneler body, the tip remaining external to the catheter lumen and sized to define an outer diameter that is greater relative the outer diameter of the catheter.

A tunneler system, comprising:

• a tunneler including at least one barb on an end thereof;
• and
• a compliant adapter member defining a lumen extending between first and second ends, wherein the adapter first end receives and frictionally engages the end of the tunneler including the at least one barb, and wherein the adapter second end receives and frictionally engages an end of a catheter so as to enable the tunneler to pull the catheter through a subcutaneous tunnel defined by the tunneler.