Microcurrent Device Digital Waveform Control for Visual Disease Treatment
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Solution Overview
Problem
Existing electrotherapeutic devices for treating visual diseases like macular degeneration are limited by complex and overlapping waveforms, high initial peak currents, safety concerns for sensitive tissues, constant current control issues, and limited frequency adjustments, leading to inconsistent therapeutic efficacy.
Innovation Solution
An electrotherapeutic device that generates hybrid waveforms with varied pulse width, period, position, coding, peak current amplitude, and shape, using digital modulation techniques to deliver microcurrents between 1 microamp and 450 microamps, with a focus on spectral quality and frequency distribution to improve treatment efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex and overlapping waveforms are used in existing electrotherapeutic devices, then the devices can provide electrical stimulation therapy, but the therapeutic efficacy becomes inconsistent and unreliable
Solution Approach 1:
The patent segments the waveform into distinct temporal components: an initial direct current (DC) component followed by alternating current (AC) components at multiple frequencies. This segmentation allows each component to serve a specific therapeutic function, improving reliability while managing complexity through structured organization rather than random overlapping waveforms.
Solution Approach 2:
The patent employs dynamic waveform parameters including variable frequency AC components (0.1-100 Hz), modulated pulse widths, and adjustable amplitudes. The waveform transitions from DC to AC and can dynamically adjust parameters based on treatment protocols, enabling consistent therapeutic efficacy through controlled variability rather than fixed complex patterns.
2Reliability
If high initial peak currents are delivered to treat visual diseases, then therapeutic effect is achieved, but safety concerns arise for sensitive tissues
Solution Approach 1:
The patent uses periodic AC components following the initial DC stimulus, with frequencies ranging from 0.1 to 100 Hz. This periodic action allows the tissue to adapt to rhythmic stimulation, maintaining therapeutic effect while reducing the risk of damage from sustained high peak currents. The alternating polarity and frequency variation prevent continuous stress on sensitive retinal tissues.
Solution Approach 2:
The patent dynamically changes waveform parameters including frequency, amplitude, and pulse width after the initial DC component. By varying these parameters, the device maintains effective stimulation while preventing excessive peak currents from causing harm to sensitive tissues. The AC components follow the initial DC stimulus, allowing parameter optimization for safety.
3Reliability
If constant current control is used in existing devices, then the device structure is simple, but frequency adjustments are limited and therapeutic efficacy varies
Solution Approach 1:
The patent integrates multiple frequency components (0.1-100 Hz) within a single device architecture, making the device universally applicable to different visual disease conditions. The ability to deliver DC, AC, and hybrid waveforms with varying frequencies and amplitudes provides multi-functionality, improving therapeutic efficacy consistency across different patient populations and disease stages.
Solution Approach 2:
The patent implements dynamic frequency adjustment capabilities, transitioning from fixed constant current control to variable frequency AC components. The device can adapt frequencies based on treatment protocols and patient response, significantly improving frequency adjustment capability while maintaining consistent therapeutic efficacy through programmable control.
4Reliability
If limited frequency adjustments are provided in existing devices, then the device complexity is reduced, but spectral quality is insufficient for optimal treatment
Solution Approach 1:
The patent employs extensive parameter changes including frequency (0.1-100 Hz), amplitude, pulse width, and phase modulation to optimize spectral quality. By varying these parameters across multiple components, the device achieves rich spectral content necessary for optimal treatment of visual diseases, with the complexity managed through systematic parameter variation rather than random adjustments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device stabilizes or improves macular degeneration and other visual diseases by providing optimized microcurrent stimulation with enhanced spectral characteristics and consistent frequency coverage, addressing the limitations of previous devices.
Implementation Method 1
deliver microcurrent, which is typically defined as current below 1 milliamp, to tissue on or near the area of the body to be treated
Data Source
AI summary
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.