PROBLEM TO BE SOLVED: To provide a pneumoperitoneum device that acquires a temperature of gas in a tube at low cost and prevents dew condensation of heated and humidified gas in the tube.SOLUTION: A pneumoperitoneum device includes: an air supply device 2 having an atmospheric temperature sensor 25 a humidifier 3 having a humidification heater 33 and a humidification heater temperature sensor 34 a heating tube 4 having a tube heater 42 and a CPU 22 for storing a temperature table in which a temperature in the heating tube 4 corresponding to the atmospheric temperature and supply power to the tube heater 42, and controlling at least one of the tube heater 42 and the humidification heater 33 so that the temperature in the heating tube 4 acquired by the table reference is kept higher than the measured temperature of the humidification heater 33.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT
