Blood pressure reconstruction and hemodynamic parameter extraction method and device

The invention provides a blood pressure reconstruction and hemodynamic parameter extraction method and device, and relates to the technical field of blood pressure measurement, the method comprises the following steps: obtaining a finger photoelectric signal, analyzing morphological characteristics of the finger photoelectric signal, and establishing characteristic parameters to obtain a blood vessel volume PPG signal; a closed-loop PID actuator is used for adjusting the static pressure of the fingers; according to the individual body characteristics and the photoelectric signal morphological characteristics, an individualized blood pressure transfer function is constructed to obtain a blood pressure waveform; training and testing the blood pressure waveform data by using an adaptive filtering system identification algorithm and an LSTM recurrent neural network algorithm to reconstruct a no-load-point blood pressure waveform; according to the individual feature data, constructing an individualized post-load p