An apparatus having an inflatable balloon near a distal end of a multi-lumen catheter, with a plurality of blood flow passageways formed through the interior of the balloon from a proximal face of the inflated balloon to a distal face of the inflated balloon. A heat transfer solution is introduced through...http://www.google.com/patents/US7052508?utm_source=gb-gplus-sharePatent US7052508 - Inflatable heat transfer apparatus