General view of the diaphragmatic pacing system [24
]. (a) It contains the implanted part and exterior part, and the communication method between them is wireless transmission. The external controller regulates phrenic nerve stimulation parameters (waveform, frequency, respiratory cycle, etc.). The internal part is responsible for transmitting stimulation parameters to the phrenic nerve to control diaphragm contraction. (b) Implantation of diaphragm pacemaker components.