Cooling system for indwelling heat exchange catheter

An apparatus for changing and maintaining the temperature of at least a portion of the body of a patient, the apparatus comprising:

• an indwelling catheter including a catheter body having an inflow lumen and an outflow lumen, and a balloon helically wrapping around at least a portion of the catheter body and in fluid communication with the inflow lumen
• a means for measuring a core body temperature of the patient;
• a primary fluid circuit in fluid flow communication with the indwelling catheter, the primary circuit adapted to contain a first circulating fluid therein;
• a secondary fluid circuit which is in heat exchange relationship with the primary fluid circuit and adapted to contain a second circulating fluid therein, the first and second fluids being in fluid-flow isolation from each other;
• and
• a temperature control module for changing the temperature of the second fluid,
• whereby, the temperature control module operates depending on the measured core body temperature of the patient.