Cryosurgical Instrument
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United States of America Patent
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Issued Date -
May 15, 2008
app pub date -
Sep 18, 2007
filing date -
Sep 18, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cryosurgical probe (cryoprobe) for ablation of a superficial tissue. The cryoprobe operation is preferably based on combination of two freezing effects: a) heat transfer from a liquid, gaseous or aerosolized cryogen, which is delivered from openings in the cryoprobe tip immediately on the surface of the treated tissue, and b) heat transfer from needle(s) installed on the outer surface of the cryotip. This needle (or needles) is constructed from material with high thermal conductivity. In addition, the outer surface of the cryotip may be provided with spacers, which limit the depth of penetration of the needle(s) into the tissue.
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