#$%^&*AU2017200111B220171214.pdf#####Abstract An apparatus is described that comprises an electrode, a waveform generator connected to the electrode, and a 5 controller. The controller is configured to control the waveform generator to deliver a high frequency alternating current (HFAC) waveform to a nerve for nerve conduction block. The HFAC waveform comprises a non-zero amplitude nrloe s block threshold for a time period, after the time 10 period, the amplitude is ramped to an amplitude value that is above the block threshold, and after the amplitude is ramped up, the HFAC waveform continues with the amplitude value that is above the block threshold. The ramped amplitude of the HFAC waveform prevents a secondary onset 15 response reaction. 8555581_1 (GHMatters) P83987.AU.3
