Electric-Field Optic Nerve Stimulation for Charge-Balanced Regeneration

The patent applies periodic alternating current (AC) stimulation instead of continuous DC stimulation. The electrical stimulus is delivered in alternating phases (e.g., 1 kHz frequency) where positive and negative cycles alternate, preventing net charge accumulation while maintaining regenerative effects. This periodic action allows the nerve to experience directional growth cues without the harmful effects of sustained charge buildup.

The patent changes the temporal parameters of electrical stimulation by using high-frequency alternating waveforms (e.g., 1 kHz) with specific duty cycles. By modulating the frequency and phase characteristics, the system achieves nerve regeneration through voltage gradient formation while avoiding the tissue damage associated with DC. The parameter transformation converts a harmful static field into a beneficial dynamic field.

The patent employs asymmetric biphasic waveforms where the positive and negative phases have different amplitudes or durations. The asymmetric design creates a net directional voltage gradient that favors axonal growth in the desired direction, while still maintaining charge balance to prevent tissue damage. This asymmetric approach resolves the contradiction by introducing directionality without sacrificing safety.

The patent ensures continuous nerve regeneration promotion through sustained AC stimulation. The high-frequency alternating waveform delivers continuous voltage gradients that consistently guide axonal growth throughout the treatment period. This continuous action maintains regenerative effectiveness while the alternating nature prevents charge accumulation, resolving the contradiction between sustained regeneration and tissue safety.