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Circulating fluid hypothermia method

  • US 6,149,677 A
  • Filed: 05/07/1999
  • Issued: 11/21/2000
  • Est. Priority Date: 03/31/1998
  • Status: Expired due to Term
First Claim
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1. A method for selective organ hypothermia, said method comprising:

  • providing a circulating fluid apparatus having a chiller and a flexible coaxial catheter, said catheter having an insulated inner lumen and a hollow flexible heat transfer element adjacent its distal tip;

    inserting said catheter through the vascular system of a patient to place said heat transfer element in a feeding artery of a selected organ;

    supplying chilled perfluorocarbon fluid to said insulated inner lumen of said coaxial catheter;

    cooling the interior of said heat transfer element with said chilled perfluorocarbon fluid;

    cooling blood flowing in said feeding artery with said heat transfer element, to enable said cooled blood to flow distally into said selected organ and cool said organ; and

    returning said perfluorocarbon fluid to said chiller.

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