Patent ID: 8226633

Claim:
A method of manufacturing a co-axial catheter comprising: inserting a second lumen, having a second proximal end and a second distal end, within a first lumen, having a first proximal end and a first distal end, such that the second proximal end extends proximally of the first proximal end; forming a hub around the first and second proximal ends wherein the forming comprises: inserting the first and second proximal ends into a hub mold; inserting a first mandrel into the second proximal end; disposing a second mandrel over the second proximal end and into the first proximal end; and inserting a third mandrel into the hub mold such that the third mandrel engages a portion of the second mandrel; and removing the second mandrel from the first and second proximal ends and inserting a spacer into the hub over the second proximal end.