Abstract: In an inductive energy transfer system, the phase of a signal that is applied to a transmitter coil to transfer energy is adjusted while energy is transferred from the transmitter device to a receiver device. The phase of the signal can be adjusted by changing a state of a DC-to-AC converter from a converting state to a non-converting state. The DC-to-AC converter outputs a signal that is applied to the transmitter coil when the DC-to-AC converter is in a converting state. A signal is not applied to the transmitter coil when the DC-to-AC converter is in a non-converting state.

Abstract: Power management and power transfer systems within the transmit and receive portions of an inductive charging system. An inductive charging system may include an inductive charging station to transmit power and a portable electronic device to receive power. Embodiments may take the form of power transfer systems within an inductive charging station including load-based transmit frequency adjustments. Embodiments may also take the form of power management systems within portable electronic devices which conserve power by disconnecting circuits from ground when those circuits are in an idle state.

Abstract: Methods and systems described herein can be used to automatically turn on and off stimulation of a target dorsal root ganglion (DRG) and/or adjust stimulation parameters. At least one of an input signal (indicative of an electrical field resulting from an electrical signal propagated by adjacent distal sensory nerve fibers toward the target DRG), an output signal (indicative of an electrical field resulting from an electrical signal propagated by adjacent proximal sensory nerve fibers away from the target DRG) or a DRG signal (indicative of an electrical field produced by cell bodies of primary sensory neurons within the target DRG and resulting from an electrical signal propagated by sensory nerve fibers within the target DRG) is/are obtained and analyzed. Delivery of electrical stimulation is turned on and off and/or at least one of pulse amplitude, pulse width and/or pulse repetition rate is/are adjusted based on results of the analysis.

Abstract: Methods and systems for use in guiding implantation of a neuromodulation lead during an implant procedure are disclosed herein. Certain methods and system are for use in guiding implantation of a lead toward an implant position where at least one electrode of the lead is located near a target dorsal root ganglion (DRG). Such methods can involve inserting a distal end of the lead into an epidural space of a spinal column within which is located the target DRG, and using one or more electrodes of the lead to obtain a sensed signal indicative of proximity of at least one electrode of the lead relative to the target DRG. Additionally, the sensed signal is used to guide placement of at least one electrode of the lead toward the implant position near the target DRG.