Heating and cooling of cryosurgical instrument using a single cryogen
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United States of America Patent
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May 10, 2011
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app pub date -
May 12, 2010
filing date -
May 12, 2010
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Abstract
A cryosurgical system featuring both cooling and heating utilizing a single type of cryogen but from two different sources. The liquid cryogen cools the tip of a cryosurgical instrument in the cryosurgical system, such as a cryoprobe or cryocatheter. The gaseous cryogen is further heated by a heating element, preferably an electrical heating element, supplying the heating needed for the thaw and release parts of the cryo treatment procedure. Thus, the cryosurgical system supports the freeze/thaw cycle of the operation of the cryosurgical instrument.
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