Implantable Electromagnetic Stimulation System for Chronic Pain
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Solution Overview
Problem
Conventional Spinal Cord Stimulation (SCS) therapies for chronic pain management rely on varying electric fields, but the relationship between frequency, waveform, amplitude, and pulse width and their analgesic effects is not fully understood, limiting their efficacy and requiring further mechanistic insights.
Innovation Solution
The use of multimodal stimulation involving oscillating electromagnetic fields with specific frequency, amplitude, and phase characteristics applied via an array of electrodes to modulate glial and neuronal interactions, including the expression of genes involved in inflammatory/immune responses and neurotransmitter regulation, to provide pain relief without pharmacological compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional SCS therapies use varying electric fields with different frequencies, waveforms, amplitudes, and pulse widths, then pain management efficacy is improved, but the mechanism understanding remains incomplete and requires further research
Solution Approach 1:
The patent segments the electric field into multiple distinct frequency components (e.g., 100 Hz, 1 kHz, 10 kHz) that can be independently controlled and applied. This segmentation allows researchers to study the effect of each frequency component separately while maintaining overall therapeutic efficacy, thereby addressing both pain management and mechanism understanding simultaneously.
Solution Approach 2:
The system enables independent adjustment of multiple parameters including frequency, amplitude, pulse width, and duty cycle for each frequency component. This parametric control allows systematic investigation of how each parameter affects both pain relief and underlying mechanisms, resolving the contradiction between therapeutic effectiveness and mechanistic knowledge.
2Reliability
If multiple frequency components are used in electromagnetic stimulation, then pain relief is improved through multimodal modulation, but device complexity increases
Solution Approach 1:
The patent combines multiple frequency generators, modulation circuits, and electrode arrays into a single integrated stimulator device. This merging approach maintains the therapeutic benefits of multimodal frequency stimulation while reducing overall device complexity through unified control architecture and shared hardware resources.
Solution Approach 2:
The stimulator is designed with universal functionality to generate and control multiple frequency components simultaneously through a single device interface. This multi-functionality eliminates the need for separate devices for each frequency, thereby improving pain relief while managing device complexity through consolidation.
3Reliability
If oscillating electromagnetic fields are applied to modulate glial and neuronal interactions, then chronic pain is effectively managed, but energy consumption increases
Solution Approach 1:
The system employs periodic oscillating electromagnetic fields with specific frequencies and duty cycles to modulate glial and neuronal interactions. By using periodic rather than continuous stimulation, the device achieves effective chronic pain management while reducing average power consumption through controlled on-off cycles and optimized pulse timing.
Solution Approach 2:
The stimulator dynamically adjusts parameters such as amplitude, frequency, and pulse width based on therapeutic requirements and battery status. This parameter optimization allows effective pain management through glial modulation while minimizing energy consumption by using the lowest effective stimulation levels and durations.
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
This approach effectively manages chronic pain by modulating nerve fiber depolarization thresholds and glial cell activity, altering synaptic plasticity and glutamate balance, offering improved pain relief with optimized energy usage and minimal invasive procedures.
Implementation Method 1
The use of multimodal stimulation involving oscillating electromagnetic fields with specific frequency, amplitude, and phase characteristics applied via an array of electrodes to modulate glial and neuronal interactions
Implementation Method 2
lowering a threshold for depolarization of nerve fibers in the subject with a component of the composite electromagnetic field
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Apparatus and methods for managing pain uses a single composite modulation/stimulation signal with variable characteristics to achieve the same results as separate varying electromagnetic signals. The composite signal is utilized for modulating the expression of genes involved in diverse pathways including inflammatory/immune system mediators, ion channels and neurotransmitters, in both the Spinal Cord (SC) and Dorsal Root Ganglion (DRG) where such expression modulation is caused by spinal cord stimulation or peripheral nerve stimulation using the disclosed apparatus and techniques.