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Inflatable catheter for selective organ heating and cooling and method of using the same

  • US 6,533,804 B2
  • Filed: 01/11/2001
  • Issued: 03/18/2003
  • Est. Priority Date: 01/23/1998
  • Status: Expired due to Term
First Claim
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1. An intravascular catheter system to change the temperature of blood by heat transfer to or from a circulating working fluid, comprising:

  • an inlet lumen; and

    an outlet lumen, the inlet and outlet lumens formed of a flexible material, the outlet lumen coupled to the inlet lumen so as to transfer the circulating working fluid between the two, the outlet lumen having a helical or a spiral structure, wherein the circulating working fluid is not exposed to the blood.

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