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Cryosurgical system and method

  • US 6,306,129 B1
  • Filed: 08/19/1999
  • Issued: 10/23/2001
  • Est. Priority Date: 09/22/1997
  • Status: Expired due to Term
First Claim
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1. A cryosurgical instrument comprising:

  • a) a vacuum enclosure comprising a helical coil heat exchanger;

    b) a probe of smaller diameter than the vacuum enclosure extending from the heat exchanger and terminating at its distal end with a closed tip providing a freezing zone effective during operation of the instrument to freeze living tissue when in contact therewith;

    c) a vacuum enclosure extension enclosing a portion of the probe; and

    d) a compressor for supplying a refrigerant to the heat exchanger.

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