A catheter and method for heating or cooling a surrounding fluid in a feeding vessel in a vasculature of a patient. The catheter includes a heat transfer element shaped and arranged to create turbulence in a surrounding fluid. A guidewire tube runs substantially parallel to the axis of the catheter to...http://www.google.co.uk/patents/US7294142?utm_source=gb-gplus-sharePatent US7294142 - Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device
