Cryosurgical instrument
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United States of America Patent
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-
Jan 19, 1999
Grant Date -
N/A
app pub date -
Jul 7, 1997
filing date -
May 10, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cryosurgical instrument comprises a metal cooling tip operable to be cooled by a flow of cryogenic fluid within the tip, at least a boiling region of the tip being coated with a heat-insulating coating. The presence of the heat-insulating coating can promote nucleate boiling of the fluid rather than film boiling. Nucleate boiling within the tip provides a greater cooling efficiency of the tip than film boiling.
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