LIVING BODY IMPEDANCE DETECTION DEVICE AND RADIO FREQUENCY ABLATION SYSTEM

An impedance detection device (100) for a living body and a radiofrequency ablation frequency (1000) are provided. The detection device (100) includes an excitation-signal generation unit (31), a transmission unit (32), an impedance-signal acquisition unit (33), and a processing unit (35). The excitation-signal generation unit (31) is configured to generate and output a high-frequency excitation signal. The transmission unit (32) is configured to transmit the high-frequency excitation signal to a detection site (21) of the living body via an output port of the transmission unit (32), where the output port of the transmission unit (32) forms an impedance-signal detection point (322). The impedance-signal acquisition unit (33) is electrically connected with the impedance-signal detection point (322), and configured to acquire a sampling signal from the impedance-signal detection point (322) in real time. The processing unit (35) is electrically connected with the impedance-signal acquisition unit (33), and configured to acquire the sampling signal and determine a real-time impedance value of the living body corresponding to a real-time sampling value of the sampling signal according to an impedance calibration data table preset. The impedance detection device (100) for the living body can accurately and quickly detect the real-time impedance value of the living body during treatment, so that the change of the impedance of the living body can be monitored in time during treatment.