Multi-Electrode Deep Brain Stimulation for Targeted Neuromodulation
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Solution Overview
Problem
Deep brain stimulation (DBS) techniques face limitations in understanding its underlying principles and mechanisms, particularly in effectively targeting multiple brain regions for improved treatment responses, as current methods primarily focus on individual brain targets rather than combined neurostimulation.
Innovation Solution
The method involves applying neuromodulation signals to the lateral habenula (LH) and posterior commissure (PC) in combination with other brain targets, such as the dorsomedial nucleus of the thalamus (DMN) and ventrolateral periaqueductal gray (VL-PAG), using an electrode lead with multiple electrodes to deliver tailored neuromodulation signals, enhancing cerebral blood flow and treatment outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If combined neurostimulation of multiple brain targets is applied, then treatment response is improved, but device complexity increases
Solution Approach 1:
The electrode lead is divided into multiple independently controllable electrodes (first electrode for DMN, second electrode for LH, third electrode for PC) that can be selectively activated. This segmentation allows the system to deliver targeted stimulation to specific brain regions while maintaining the ability to use fewer electrodes when needed, thus improving treatment response without permanently increasing device complexity.
Solution Approach 2:
The electrode lead is designed with multiple electrodes that can function independently or in combination, allowing a single device to perform multiple stimulation patterns (single target, dual target, or triple target stimulation). This multi-functionality enables the system to adapt to different treatment protocols and patient needs without requiring multiple separate devices.
2Reliability
If multiple neuromodulation signals are applied to different brain targets, then treatment effectiveness is improved, but control complexity increases
Solution Approach 1:
The neurostimulator is designed to dynamically adjust stimulation parameters including frequency, pulse width, and amplitude for each electrode independently. The system can switch between different stimulation patterns (monopolar, bipolar, combined) and modify signal characteristics in real-time based on treatment requirements, making the complex multi-electrode system manageable through adaptive control.
Solution Approach 2:
The system employs periodic or burst stimulation patterns where neuromodulation signals are delivered in structured intervals rather than continuously. This periodic action simplifies control by establishing predictable timing patterns for multiple electrodes, reducing the operational complexity of coordinating multiple simultaneous stimulation signals.
3Measurement precision
If tailored neuromodulation signals are delivered to specific brain regions, then treatment precision is improved, but energy consumption increases
Solution Approach 1:
The system delivers tailored neuromodulation signals with specific frequencies, pulse widths, and amplitudes to each electrode based on the local requirements of the target brain region. The first electrode targeting DMN, second electrode targeting LH, and third electrode targeting PC can each receive customized stimulation parameters, improving treatment precision while allowing energy conservation by applying stimulation only where needed rather than uniformly across all electrodes.
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 improves treatment responses by enhancing cerebral blood flow and allowing for the effective management of conditions associated with reduced cerebral blood flow, offering a more comprehensive and targeted therapeutic strategy for neurological disorders.
Implementation Method 1
applying one or more neuromodulation signals to the lateral habenula (LH) and the posterior commissure (PC)
Data Source
AI summary
A method of treatment performed on a subject's brain includes a step of applying one or more neuromodulation signals to the lateral habenula and the posterior commissure.