Charging system for a rechargeable implantable stimulation system
AssigneeAxonics, Inc.
InventorsFaizal ABDEEN, Xuechen HUANG, Guangqiang JIANG, Rinda SAMA
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Abstract
A charging device for an implantable pulse generator, the device including a charging coil and a controller. The controller being configured to track a net expended thermal energy of the charging device and modulate a charging duty cycle of the charging device to limit the heat generated by the charging device based on the net expended thermal energy. The charging device is configured to charge the implantable based on the modulated charging duty cycle by providing a voltage to the charging coil.
Claims20
A method of operating a rechargeable system for providing neurostimulation to a patient, the system including a charging device (CD) and an implantable pulse generator (IPG) and the method comprising the steps of:
- tracking, by a controller, a heat counter, wherein the heat counter is a value indicative of net expended thermal energy of the CD based on an operating power of the CD and a charging duty cycle of the CD;
- modulating, by the controller, the charging duty cycle to limit heat generated by the CD based on the heat counter;
- and
- charging the IPG based on the modulated charging duty cycle.
A method of operating a charging device (CD) for an implantable pulse generator (IPG) and the method comprising the steps of:
- tracking, by a controller, a net expended thermal energy of the CD;
- modulating, by the controller, a charging duty cycle to limit the heat generated by the CD based on the net expended thermal energy;
- and
- wherein the controller controls the charging of the IPG based on the modulated charging duty cycle.
A charging device (CD) for an implantable pulse generator (IPG), wherein the CD comprises:
- a charging coil;
- a battery;
- a controller;
- wherein the controller is configured to:
- track a net expended thermal energy of the CD;
- and
- modulate a charging duty cycle of the CD to limit the heat generated by the CD based on the net expended thermal energy;
- direct a provision of a current to the charging coil in order to charge the IPG based on the modulated charging duty cycle.
Dependencies are inferred from the claim text.