Neurostimulation Interference Estimation Module
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Solution Overview
Problem
Current multi-channel and variable neuromodulation systems face challenges in managing partial and full overlap of stimulation blocks, leading to unwanted interference effects that can impact the efficacy and efficiency of spinal cord neurostimulation, particularly in terms of battery life and muscle response control.
Innovation Solution
A system comprising a stimulation module and a stimulation interference estimation module that analyzes potential spatial and temporal overlaps between stimulation blocks, reconfiguring electrode configurations and pulse trains to minimize or avoid interference, optimizing current delivery, and extending battery life while maintaining therapeutic effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple stimulation blocks are delivered simultaneously with different pulsed electrical waveforms, then the control precision over muscle activation is improved, but the risk of temporal and spatial overlap of pulses increases causing interference effects
Solution Approach 1:
The system performs preliminary analysis of potential pulse overlaps between multiple stimulation blocks before delivering the neurostimulation. By predicting temporal and spatial conflicts in advance, the system can adjust stimulation parameters or timing to prevent interference effects, thereby maintaining control precision without adverse interactions.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor the actual delivery of pulsed electrical waveforms and detect any unintended overlaps. This feedback allows real-time adjustment of stimulation blocks to eliminate interference while preserving the benefits of multi-channel control precision.
2Reliability
If pulse trains are optimized for precise muscle activation, then the therapeutic effectiveness is improved, but the power consumption increases reducing battery life
Solution Approach 1:
The system delivers only the necessary portion of stimulation pulses required to achieve therapeutic effectiveness. By analyzing which stimulation blocks are truly needed for the desired muscle activation and eliminating redundant pulses, the system maintains therapeutic reliability while reducing overall power consumption and extending battery life.
Solution Approach 2:
The system uses periodic pulsed electrical waveforms with optimized timing and frequency. By delivering stimulation in efficient periodic patterns rather than continuous high-power delivery, the system achieves effective muscle activation while minimizing energy consumption and preserving battery life for longer duration use.
3Adaptability or versatility
If the stimulation settings are expanded to accommodate complex spinal cord patterns, then the adaptability of the system is improved, but the device complexity increases
Solution Approach 1:
The system segments the complex spinal cord stimulation task into multiple independent stimulation blocks, each targeting specific nerve roots or muscle groups. This segmentation allows the system to achieve high adaptability for complex spinal cord patterns while managing device complexity by breaking down the overall control into manageable, modular components that can be independently configured and delivered.
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 system provides improved control over neuromodulation by reducing unwanted interference, enhancing the precision and efficiency of muscle stimulation, and extending the battery life of implantable devices, thereby ensuring effective and controlled neurostimulation with reduced adverse effects.
Implementation Method 1
EES uses a multi-electrode array placed on the dorsal side of the spinal cord on top of the dura matter... EES can both stimulate the leg muscles through the proprioceptive afferent fibers
Implementation Method 2
stimulation interference estimation module for providing an interference model for estimating the first stimulation block and the second stimulation block for at least one potential spatial and/or temporal overlap
Data Source
AI summary
Methods and systems for neurostimulation are provided. In one example, a neurostimulation system may include a stimulation module, the stimulation module providing a first stimulation block and a second stimulation block. The neurostimulation system may further include a stimulation interference estimation module for providing an interference model for estimating a spatial interference between the first stimulation block and the second stimulation block. In some examples, the stimulation interference estimation module may reconfigure one or more of the first and the second stimulation blocks to reduce temporal overlap of the stimulation blocks.