Method and apparatus for monitoring the progress of labor

The invention is joint position sensor to secondary pelvis framework target point; Detecting position sensor the three-dimensional space to reference position; Monitor embryo of the air part of the secondary pelvis framework with high position, during monitoring the delivery, the base substance delivery processing method. The fetal device air part of the is composed of production position sensor, and adopting the imaging is a display. The conditions, to the cervical canal disappearance, the cervical telescopic and cervical position of also prevent detecting and production method thereof.