Measuring current during delivery of voltage regulated stimulation to a patient

A method of acquiring data associated with the current delivered to a patient by an active implantable medical device, the method comprising:

• outputting an electrical stimulation therapy signal and a proxy signal, the proxy signal being based on the therapy signal;
• providing a value related to a current delivered to the patient, the value being derived from the proxy signal;
• and
• processing the value to determine a measure related to the current delivered to the patient.

A method for acquiring data associated with the current delivered to a patient during a voltage-regulated electrical stimulation therapy generated by an active implantable medical device, the method comprising:

• creating a signal comprising a proxy for the current being delivered to the patient;
• generating a signal proportionate to the current being delivered to the patient;
• counting the logic pulses to calculate a total charge delivered for the therapy;
• evaluating the logic pulses to identify at least one peak current occurring during the therapy;
• evaluating the logic pulses to identify at least one time window corresponding to each peak current;
• and
• storing values associated with the total charge calculation, each at least one peak current and each at least one time window.