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Selective organ hypothermia method and apparatus

  • US 6,235,048 B1
  • Filed: 05/07/1999
  • Issued: 05/22/2001
  • Est. Priority Date: 01/23/1998
  • Status: Expired due to Term
First Claim
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1. A method for selective organ hypothermia, said method comprising:

  • providing a flexible catheter, said catheter having an expansion element 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 compressed refrigerant to said expansion element;

    expanding said refrigerant through said expansion element to cool the interior of said hollow heat transfer element;

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

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