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Cooling system for indwelling heat exchange catheter

  • US 7,101,388 B2
  • Filed: 07/29/2004
  • Issued: 09/05/2006
  • Est. Priority Date: 12/24/1998
  • Status: Expired due to Fees
First Claim
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1. An apparatus for changing and maintaining the core temperature 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 at least one heat exchange element communicating with the lumens and distally disposed on the catheter body;

    at least one 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 receiving the signal from the means for measuring for changing the temperature of the second fluid to approach a desired core body temperature of the patient.

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