Vagus Nerve Stimulation via Selective Electrode Configurations
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Solution Overview
Problem
Current non-invasive electrical stimulation methods struggle to selectively stimulate deep nerves without causing pain or stimulating unintended nerves, and they often fail to predict and prevent imminent medical conditions such as epileptic seizures, asthma attacks, and cardiovascular events in real-time.
Innovation Solution
The development of novel electrode-based and magnetic stimulation devices that transmit energy non-invasively to the vagus nerve in the neck, using specific waveform parameters and electrode configurations to selectively stimulate the target nerve, while minimizing pain and using sensors to forecast imminent medical events for prophylactic countermeasures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-invasive electrical stimulation is applied to deep nerves, then the nerve can be stimulated without surgery, but the stimulation becomes less selective and may stimulate unintended nerves
Solution Approach 1:
The patent applies local quality by configuring electrodes with specific geometric arrangements and impedance characteristics at the stimulation site to create localized current density patterns that selectively activate the target nerve while minimizing spread to adjacent structures. The electrode design incorporates varying impedance values and spatial configurations tailored to the specific anatomical location and depth of the target nerve.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting stimulation waveform characteristics including frequency, amplitude, pulse width, and biphasic ratios based on real-time feedback from recorded neural signals. The system modifies these parameters to optimize selective activation of the target nerve at different depths and locations, adapting the stimulation profile to achieve precise neural modulation without invasive procedures.
2Power
If higher energy is used to reach deep nerves non-invasively, then the nerve can be stimulated effectively, but pain and stimulation of unintended nerves increase
Solution Approach 1:
The patent implements periodic action by using pulsed stimulation waveforms with specific duty cycles and inter-pulse intervals rather than continuous stimulation. This allows the neural tissue to recover between pulses, reducing pain and unwanted side effects while maintaining effective activation of the target nerve. The periodic modulation also enables frequency-specific neural responses that can selectively activate certain nerve fibers over others.
Solution Approach 2:
The patent employs feedback mechanisms by continuously monitoring recorded neural signals from the target nerve and using this information to adjust stimulation parameters in real-time. The system detects neural response thresholds and adapts the stimulation energy levels accordingly, increasing power only when necessary to reach the target nerve while immediately reducing it when the threshold is achieved, thereby minimizing pain and unintended stimulation.
3Reliability
If sensors continuously monitor physiological signals to forecast imminent medical events, then early prevention is possible, but the system complexity and data processing requirements increase
Solution Approach 1:
The patent applies universality by designing a multi-functional system where the same sensors and processing unit serve multiple purposes: monitoring various physiological parameters (ECG, EEG, EMG, respiratory signals), detecting different types of medical events (seizures, asthma attacks, cardiovascular events), and providing both alarm and preventive stimulation functions. This consolidates what could be multiple separate systems into a single integrated platform, reducing overall system complexity while maintaining comprehensive monitoring capabilities.
Solution Approach 2:
The patent implements preliminary action by continuously analyzing physiological signals to detect early warning patterns and forecast imminent medical events before they occur. The system identifies precursor signatures in the monitored data and triggers preventive vagus nerve stimulation in advance of the actual medical event, allowing intervention during the prodromal phase when it is most effective. This proactive approach enhances reliability by preventing events rather than merely responding to them.
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
These devices enable effective, pain-free stimulation of the vagus nerve for therapeutic and prophylactic purposes, allowing for the prediction and prevention of acute medical events like seizures and cardiovascular incidents, offering a non-invasive and selective treatment option.
Implementation Method 1
transcutaneous electrical nerve stimulation
Implementation Method 2
magnetic nerve stimulation
Data Source
AI summary
Systems, devices and methods for averting imminent medical attacks comprise transcutaneous electrical and magnetic nerve stimulation devices using energy that is delivered non-invasively to the patient. One or more sensors detect physiological and/or environmental signals within a patient and the values of these signals are used to forecast an acute medical event, which can be treated via non-invasive nerve stimulation. The acute medical events may comprise, among others, bronchoconstriction, epileptic seizures, primary headache, such as migraine or cluster headaches, transient ischemic attack or stroke, onset of atrial fibrillation, myocardial infarction, and acute depression or anxiety.