Heat transfer catheters and methods of making and using same

Abstract

Heat transfer catheter apparatus and methods of making and using the same are disclosed wherein fluid connection means is provided between the distal portions of two adjacent, thin walled, high strength fluid lumens to define a closed loop fluid circulation system capable of controlled delivery of thermal energy to or withdrawal of thermal energy from remote internal body locations.

1 : A heat transfer catheter apparatus, comprising:
 (a) a substantially elongate shaft;   (b) at least one first lumen internal to said substantially elongate shaft, said at least one internal lumen configured to circulate a working fluid; and   (c) a second lumen external and adjacent to said substantially elongate shaft, said second lumen having a spiral shape.