Cryoprobe with coaxial chambers
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United States of America Patent
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Oct 30, 2012
Grant Date -
May 22, 2008
app pub date -
Nov 15, 2007
filing date -
Nov 17, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present disclosure is directed to a cryoprobe capable of improving the cooling power of a cryosurgical system. A representative cryoprobe can comprise an inner cooling chamber and a radial chamber, positioned between the inner cooling chamber and an exterior wall of the cryoprobe. Preferably, the radial chamber is formed to have a low thermal conductivity so as to significantly reduce the transfer of heat between the body and the refrigerant in the inner chamber during a cryosurgical procedure. The radial chamber can be fabricated such that a vacuum can be applied to the radial chamber to further reduce heat transfer between the body and the inner cooling chamber. The radial chamber extends partially along the length of the cryoprobe such that inner cooling chamber is in direct thermal contact with the exterior wall at a cryoprobe tip.
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