Heating and cooling of cryosurgical instrument using a...

Surgery – Instruments – Cyrogenic application

Reexamination Certificate

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C606S021000, C606S022000, C606S024000, C606S025000

Reexamination Certificate

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07938822

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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