Efficient use of an implantable pulse generator battery, and associated systems and methods

An implantable device configured to deliver therapy to a patient, the device comprising:

• a battery;
• a voltage regulator coupled to the battery and configured to produce a supply voltage;
• a current-generating circuit configured to supply a current to the device based at least in part on the supply voltage;
• and
• a computer-readable medium having instructions that, when executed, cause the device to—
• deliver the supply voltage, having a first value, from the voltage regulator to the current-generating circuit;
• adjust the supply voltage from the first value until a threshold break occurs, the threshold break corresponding to a second value of the supply voltage at or below a threshold value, wherein the threshold value is above a minimum voltage value below which the current-generating circuit is prevented from supplying the requested current to the device;
• and
• in response to the threshold break, increase the supply voltage from the second value to a third value.

A method for adjusting an electrical signal associated with delivering therapy to a patient, the method comprising:

• delivering, via an implantable pulse generator, an electrical signal having a parameter with a first parameter value;
• adjusting the parameter of the electrical signal from the first parameter value until a threshold break occurs at a second parameter value that is equal to or less than a threshold value, wherein the threshold value is above a minimum parameter value below which therapy is not delivered to the patient;
• and
• in response to the threshold break, increasing the second parameter value to a third parameter value.