Abstract
Recently, a surgical treatment, radiation therapy and chemotherapy are performed as a treatment for the tumor tissue.Cryosurgery and hyperthermia treatment is taken as one of the low-invasive therapeutic method. In the past, we have developed the combination treatment system as a test machine of cryosurgery and hyperthermia treatment and have evaluated the system performance. In this study, a handpiece type device for cryosurgery and hyperthermia treatment was produced. The system consists of Peltier device, a handpiece with coolant and stabilized DC power supply. The basic performance of the treatment system was evaluated. In the evaluation, the system was examined using various coolants in the no-load running. During the test, the temperature of the operation side of Peltier device was measured using T type thermocouple. The minimum temperature of the operation side using an urea ammonium sulfate mixture as coolant was lower than that of ethanol. As described above, the enhancement of refrigeration performance of the system would be confirmed.
