Method and apparatus for neural stimulation with respiratory feedback

A neural stimulation system, comprising:

• a stimulation output circuit configured to deliver neural stimulation pulses;
• a respiratory signal input configured to receive a respiratory signal indicative of respiratory cycles and respiratory parameters;
• a synchronization module coupled to the stimulation output circuit and the respiratory signal input, the synchronization module including:
• a peak detector coupled to the respiratory signal input, the peak detector configured to detect peaks of the respiratory signal;
• and
• a delay timer coupled to the peak detector, the delay timer configured to time a delay interval starting with each of the detected peaks of the respiratory signal;
• and
• a stimulation delivery controller coupled to the delay timer and the stimulation output circuit, the stimulation delivery controller configured to cause the stimulation output circuit to deliver a burst of the neural stimulation pulses when the delay interval expires.