PROBLEM TO BE SOLVED: To provide a cryosurgical unit that can perform the cryotherapy of a microscopical region, needs not insulate a tube that supplies refrigerant into a diseased part, and can recycle the refrigerant without discharging the refrigerant in the atmosphere, and to provide a temperature control method of the same.SOLUTION: The cryosurgical unit includes: a probe 11 that freezes a diseased part 30 a refrigerant holding container 12 that maintains the refrigerant used in the probe in a liquid condition under the pressurization condition a condenser 14 that cools and condenses the refrigerant in a gas condition a first tube 15a that sends the refrigerant 1 of a liquid condition to the probe and a second tube 15b that sends the refrigerant of a gas condition from the probe to the condenser. The probe 11 has a double tube structure that includes an inner tube and an outside tube, and the inner tube decompresses the refrigerant of a liquid condition from the first tube, and as for the outside tube, the external surface thereof comes in contact with the diseased part, the decompressed refrigerant flows in the inside and deprives heat from the diseased part, and the refrigerant is evaporated.COPYRIGHT: (C)2013,JPO&INPIT【課題】 微小領域を凍結治療できるとともに、冷媒を患部に供給する管を断熱する必要がなく、且つ大気中に冷媒を放出せずに冷媒を再利用することが可能な凍結手術装置およびその温度制御方法を提供する。【解決手段】 凍結手術装置は、患部30を凍結するプローブ11と、プローブで用いる冷媒を加圧条件下で液体状態に保持する冷媒保持容器12と、気体状態の冷媒を冷却して凝縮する凝縮器14と、プローブへ液体状態の冷媒1を送る第一の管15aと、プローブから気体状態の冷媒を凝縮器へ送る第二の管15bとを備える。プローブ11は、内管および外管を備える二重管構造を有しており、内管は、第一の管からの液体状態の冷媒を減圧し、外管は、その外面が患部と接触するとともに、その内部に減圧した冷媒が流れ、患部からの熱を奪って冷媒を気化する。【選択図】 図1
