Neuromodulation System Using Composite Bursting Waveforms
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Solution Overview
Problem
Current deep brain stimulation methods for treating movement disorders rely on regular isochronous electrical stimulation, which may not effectively mimic natural brain activity or promote motor recovery after neurological insults, limiting their therapeutic efficacy.
Innovation Solution
A neurostimulation system that delivers composite patterns of stimulation, combining a first output waveform with a second output waveform that is periodically superimposed on the first, to create periodic bursting stimulation, which is more akin to natural brain activity and potentially enhances motor recovery by inducing long-term potentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If regular isochronous stimulation is used for deep brain stimulation, then the treatment is simple to implement and control, but the therapeutic efficacy is limited because it does not effectively mimic natural brain activity
Solution Approach 1:
The patent implements periodic bursting stimulation patterns where bursts of high-frequency stimulation are delivered intermittently rather than continuously. This periodic action mimics natural brain activity patterns more closely, improving therapeutic efficacy by engaging neuroplasticity mechanisms while maintaining system manageability through programmed delivery schedules.
Solution Approach 2:
The stimulation system transitions from static, fixed-frequency isochronous delivery to dynamic, variable patterns including bursting protocols where amplitude, frequency, and timing can be modulated. This dynamic capability allows the system to adapt stimulation parameters to match natural brain activity variations, enhancing therapeutic effect without requiring complex real-time control.
2Reliability
If composite patterns of stimulation are used to mimic natural brain activity, then motor recovery is enhanced, but the system complexity increases due to multiple waveforms and superimposition requirements
Solution Approach 1:
The patent combines multiple stimulation waveforms by superimposing a second waveform onto a first waveform to create composite bursting patterns. This merging of simple waveform components produces complex physiological effects that enhance motor recovery, while the modular combination approach keeps individual waveform generation relatively simple.
Solution Approach 2:
The stimulation system employs composite waveforms formed by superimposition of multiple electrical signal patterns. These composite patterns integrate characteristics of different stimulation types (e.g., high-frequency bursts combined with lower-frequency envelope modulation) to create a synergistic effect that enhances neuroplasticity and motor recovery beyond what single waveforms achieve.
3Reliability
If high frequency isochronous stimulation at 130 Hz or greater is applied, then symptoms of Parkinson's disease and essential tremor are alleviated, but the stimulation pattern does not promote motor recovery after neurological insults
Solution Approach 1:
The stimulation system is designed with multi-functional capability to address diverse neurological conditions through a single platform. By incorporating programmable bursting patterns and variable stimulation protocols, the system can effectively treat both Parkinson's disease/symptom management and promote motor recovery after stroke or other neurological insults, eliminating the need for condition-specific hardware modifications.
Solution Approach 2:
The system employs parameter modulation to adapt stimulation characteristics to different therapeutic goals. For symptom alleviation in Parkinson's, high-frequency isochronous parameters (130 Hz+) are used. For motor recovery promotion, the system switches to bursting patterns with variable frequency, amplitude, and duty cycle parameters, allowing a single device to serve multiple clinical indications through software-controlled parameter changes.
Data Source
AI summary
A neurostimulation system can include a memory, a playback system, a stimulation electrode, and a controller. The memory can store data for first and second input waveforms. The playback system can provides first and second output waveforms, based on the first and second input waveforms in the memory, respectively, to form composite patterns of stimulation or waveforms. The first output waveform can be different than the second output waveform. The second output waveform can be periodically superimposed on the first output waveform. The controller can be in communication with the stimulation electrode. The controller can be configured to control application of the composite pattern of stimulation or waveform to a target site in a body of a subject suffering from a medical condition.