An infusion wire that can be used either as a guidewire or an infusion catheter having a tapered core wire within an infusion lumen formed of the aligned lumens of the conduit of a proximal connector housing, an inner sheath in a proximal infusion wire portion and a distal coil wire in a distal infusion...http://www.google.ca/patents/US5997487?utm_source=gb-gplus-sharePatent US5997487 - Infusion wire having fixed core wire
