Microcurrent device for the treatment of visual disease
An electrotherapeutic device for treating a visual disease using microcurrent stimulation is provided. The device includes a signal generator in which a waveform controller digitally controls a waveform signal source so as to generate a waveform in which one or more waveform parameters (e.g., pulse width, pulse period, pulse position, pulse coding, peak current amplitude, duty cycle, and/or pulse shape) are varied in accordance with a protocol for treating a visual disease. The device also includes an applicator connected to the signal generator and configured to apply the waveform to at least one stimulation point within an eye region.
1. An electrotherapeutic device for treating a visual disease using microcurrent stimulation, comprising:
a signal generator comprising (a) a waveform signal source configured to provide a waveform comprising a series of current pulses having a peak current amplitude between 1 microamp and 450 microamps and (b) a waveform controller connected to the waveform signal source and programmed to generate a digital control signal that determines a plurality of waveform parameters for the waveform in accordance with a visual disease treatment protocol, wherein one of the waveform parameters comprises a frequency that is selectively varied to cause the waveform signal source to provide the current pulses at a plurality of varying frequencies within a defined frequency range, wherein another one of the waveform parameters comprises a pulse width that is selectively varied to cause the waveform signal source to provide the current pulses at a plurality of varying pulse widths, and wherein the waveform signal source is configured to receive the digital control signal and provide the waveform so that the frequency and the pulse width of the current pulses are varied simultaneously within the waveform during a treatment session; and
an applicator connected to the signal generator and including an electrode configured to receive and apply the waveform within an eye region during the treatment session.
2. The electrotherapeutic device of claim 1 , wherein the defined frequency range is 0.3 Hz to 300 Hz.
3. The electrotherapeutic device of claim 2 , wherein the current pulses are provided at 75% or more of the discrete frequencies within the defined frequency range.
4. The electrotherapeutic device of claim 2 , wherein the current pulses are provided at 90% or more of the discrete frequencies within the defined frequency range.
5. The electrotherapeutic device of claim 1 , wherein the defined frequency range is 0.1 Hz to 50 Hz.
6. The electrotherapeutic device of claim 5 , wherein the current pulses are provided at 75% or more of the discrete frequencies within the defined frequency range.
7. The electrotherapeutic device of claim 5 , wherein the current pulses are provided at 90% or more of the discrete frequencies within the defined frequency range.
8. The electrotherapeutic device of claim 1 , wherein the defined frequency range is 0.05 Hz to 10 Hz.
9. The electrotherapeutic device of claim 8 , wherein the current pulses are provided at 75% or more of the discrete frequencies within the defined frequency range.
10. The electrotherapeutic device of claim 8 , wherein the current pulses are provided at 90% or more of the discrete frequencies within the defined frequency range.
11. The electrotherapeutic device of claim 1 , wherein another one of the varied waveform parameters comprises one of peak current amplitude, duty cycle, and pulse shape.
12. The electrotherapeutic device of claim 11 , wherein the waveform comprises a first pulse sequence and a second pulse sequence.
13. The electrotherapeutic device of claim 12 , wherein the signal generator further comprises a waveform sequence controller that varies a polarity of each of the first and second pulse sequences is varied to generate a bipolar waveform.
14. The electrotherapeutic device of claim 13 , wherein the varied waveform parameters of the first pulse sequence are the same as the varied waveform parameters of the second pulse sequence.
15. The electrotherapeutic device of claim 13 , wherein the varied waveform parameters of the first pulse sequence are different than the varied waveform parameters of the second pulse sequence.
16. The electrotherapeutic device of claim 1 , wherein the visual disease comprises macular degeneration.
17. The electrotherapeutic device of claim 1 , wherein the applicator comprises a probe configured to apply the waveform to the stimulation point and a counter electrode configured for attachment to a body part.
18. The electrotherapeutic device of claim 1 , wherein the current pulses have a peak current amplitude between 1 microamp and 450 microamps.
19. The electrotherapeutic device of claim 1 , wherein the current pulses have a peak current amplitude between 180 microamps and 220 microamps.
20. The electrotherapeutic device of claim 1 , wherein the waveform has an average current between 70 microamps and 200 microamps.
21. The electrotherapeutic device of claim 1 , wherein the waveform has an average current between 90 microamps and 100 microamps.