Study on the application of cardiac impedance and ECG in medical robot

The robot used in the medical field of diagnosis, treatment and rehabilitation is the research hotspot in the field of robots. The medical robot studied in this paper is used for the diagnosis and treatment about heart disease. The method based on the combined analysis of cardiac impedance and ECG signal to determine the cardiac function parameters is proposed. Based on this method, the medical robot collects and analyzes the patient's cardiac function parameters. The parameters provide the references for the doctor's clinical diagnosis and treatment. Firstly, the robot system collects the thoracic impedance signal and the ECG signal synchronously, and then performs the noise and frequency spectrum analysis on the thoracic impedance signal. Next, extract the cardiac impedance signal from the thoracic impedance signal. Then the feature points of cardiac impedance are obtained by combing with the synchronously collected ECG signal. Finally, the cardiac function parameters are calculated. The system collects the thoracic impedance signals and synchronous ECG signals of 32 volunteers, a total of 128 sets of data. Experimental results show that this proposed method accords with the setting of experiment scheme. The cardiac function parameters are calculated and analyzed in line with the actual situation. So the medical robot system based on the proposed method is very suitable for heart disease diagnosis and treatment.