Output circuit for both cardiac contractile electrostimulation and non-contractile neural modulation
AssigneeCardiac Pacemakers, Inc.
InventorsKeith R. Maile, Ramprasad Vijayagopal, Nicholas J. Stessman, Firmin Musungu
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Abstract
An apparatus comprises an electrostimulation energy storage capacitor, a circuit path that provides pacing stimulation from the capacitor through the load, a constant current neural stimulation circuit that is switchable into the circuit path to provide neural stimulation through the load and switchable out of the circuit path to provide the pacing stimulation through the load, and a control circuit configured to selectively enable delivery of the pacing stimulation or the constant current neural stimulation.
Claims20
An apparatus for delivering both cardiac pacing therapy and neural stimulation therapy to a load, the apparatus comprising:
- an electrostimulation energy storage capacitor;
- a circuit path that provides pacing stimulation from the capacitor through the load;
- a constant current neural stimulation circuit that is switchable into the circuit path in series with the capacitor and the load to provide neural stimulation from the capacitor through the load and switchable out of the circuit path to provide the pacing stimulation through the load;
- and
- a control circuit configured to selectively enable delivery of the pacing stimulation or the constant current neural stimulation.
A method comprising:
- delivering pacing stimulation using a circuit path of an electronics unit of an implantable medical device (IMD), wherein the circuit path provides the pacing stimulation from an electrostimulation energy storage capacitor through a load;
- switching constant current neural stimulation into the circuit path in series with the capacitor and the load to deliver neural stimulation from the capacitor through the load;
- and
- switching the constant current neural stimulation out of the circuit path to deliver the pacing stimulation.
Dependencies are inferred from the claim text.