Patent ID: 7389147

Claim:
A programming device comprising: a user interface; and a processor that presents a user with an interface for selection of one of a constant current mode or a constant voltage mode via the user interface, receives a selection of one of the modes from the user via the user interface, configures a medical device according to the selected mode, and presents die user with either an interface for selection of a voltage amplitude or an interface for selection of a current amplitude via the user interface based on the selected mode, wherein the processor configures the medical device to measure, using impedance measurement circuitry, an impedance presented to stimulation circuitry of the medical device based on the selected mode, and wherein, when the medical device comprises constant voltage stimulation circuitry and the user selects the constant current mode, the processor configures the medical device to measure, using the impedance measurement circuitry, the presented impedance and adjust a stimulation voltage amplitude based on the measured impedance to deliver stimulation with a substantially constant current amplitude.