Patent ID: 7751899
Filing Date: 2010-07-06
Classification: A61N

Abstract:
1. A method of providing a power signal to an implantable device, said method comprising: receiving, by a processor, a control signal that selectively indicates one of a low power mode and a high power mode; receiving, by a first output driver, a first input signal and generating, by the first output driver, a first output signal based on the first input signal; receiving, by a second output driver, a signal output by the processor and generating, by the second output driver, a second output signal based on the signal output by the processor; setting, by the second output driver, the second output signal equal to zero when the control signal indicates the lower power mode; setting, by the second output driver, the second output signal to be substantially equal to a 180-degree-phase-shifted version of the first output signal when the control signal indicates the high power mode; combining, by a primary coil and first matching network residing in-series between the first and second output drivers, the first and second output signals to generate a primary voltage equal to a voltage of the first output signal when the control signal indicates the low power mode and twice the voltage of the first output signal when the control signal indicates the high power mode; and generating, by a secondary coil inductively coupled to the primary coil and a second matching network in-series with the secondary coil, the power signal based on the primary voltage, the power signal having a first power level when the control signal indicates the low power mode and a second power level equal to four times the first power level when the control signal indicates the high power mode.