NEEDLE PROBE FOR COOLING OPERATION AND COOLING OPERATION SYSTEM

摘要

Provided are a needle probe for cooling operation and a cooling operation system, in which a very small area can be precisely cooled. A needle probe (10) for cooling operation includes a first cylindrical body (14) and a second cylindrical body (12) made of thin metals of different kinds and extending in a state of being electrically insulated from each other. The first cylindrical body (14) and second cylindrical body (12) serve as channels for refrigerant as well as compensation conduction wires for a thermocouple. One end of each of the first cylindrical body (14) and second cylindrical body (12) is closed and bonded to form a tip end portion (18). The tip end portion (18) serves as a temperature measurement contact of a thermocouple. A very small interconnection portion (20) for interconnecting the inside and outside of the first cylindrical body (14) is formed near the tip end portion (18). Refrigerant is introduced into the first cylindrical body (14), and when the refrigerant is passed through the very small interconnection portion (20) and introduced to the second tubular body (12), the refrigerant evaporates or adiabatically expands, whereby cold heat usable for cooling the tip end portion (18) is generated. The tip end portion (18) is applied to a target area to be treated, thereby cooling the target area.