Abstract
A novel cryosurgical device has been developed that dramatically improves the cost, convenience, safety, and effectiveness of cryosurgical devices. The device incorporates a mixed gas J-T stage. The fluid mixture is non flammable, non toxic, non corrosive, environmentally safe, and therefore suitable for medical applications. The system is compressor driven utilizing a novel oil free motor. Working temperatures of -115 to -125 °C at pressures of 300 to 350 psi are achieved. Approximately 20 watts of refrigeration are delivered at -120 °C.
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