Mismatched Frequency Deep Brain Stimulation for OCD
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Solution Overview
Problem
Current treatments for obsessive-compulsive disorder (OCD) and other mental disorders associated with high brain connectivity, such as deep brain stimulation (DBS), have limited effectiveness, with many patients still experiencing severe symptoms and significant impairment, necessitating more reliable and stronger relief systems.
Innovation Solution
The use of mismatched frequencies in deep brain stimulation (DBS) to disrupt synchronous neural firing in cortico-striato-thalamo-cortical circuits by implanting electrodes at two separate points within a brain circuit and providing electrical signals with differing frequencies to break connectivity and restore normal brain functioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional DBS with single frequency stimulation is used, then some symptom relief is achieved, but patients still experience severe disabling symptoms and treatment effectiveness is limited
Solution Approach 1:
The patent applies parameter changes by transitioning from single-frequency stimulation to multi-frequency stimulation. Specifically, the system delivers electrical signals at multiple distinct frequencies (e.g., 10 Hz, 20 Hz, 30 Hz, 40 Hz, 50 Hz) to different electrodes within the same brain circuit. This frequency diversification disrupts synchronous neural firing more effectively, thereby improving treatment reliability and reducing residual disabling symptoms that persist with traditional single-frequency DBS.
Solution Approach 2:
The patent segments the stimulation approach by dividing the brain circuit into multiple target locations, each receiving stimulation at different frequencies. Instead of using a single electrode with a single frequency, the system employs multiple electrodes positioned at separate points within the CSTC circuit, with each electrode receiving a distinct frequency signal. This segmentation strategy enhances the disruption of pathological synchrony and improves overall treatment effectiveness.
2Reliability
If DBS is used to treat OCD, then some connectivity disruption is achieved, but the treatment is expensive and invasive, making it a last resort
Solution Approach 1:
The patent enhances the universality of DBS by creating a multi-frequency stimulation system that can treat multiple mental disorders (OCD, Parkinson disease, anxiety, depression, PTSD) using the same basic apparatus. The system's ability to deliver different frequency signals to different electrodes makes it versatile across various conditions characterized by hyperconnectivity, potentially reducing the need for multiple specialized treatments and lowering overall treatment complexity and cost.
Solution Approach 2:
The patent introduces dynamics by making the stimulation frequencies adjustable and variable rather than fixed. The system can dynamically adapt the frequency parameters based on patient response and specific disorder characteristics. This dynamic capability allows the same DBS apparatus to optimize treatment for different disorders and individual patients, improving reliability while maintaining a single unified device that reduces complexity compared to having separate treatment systems.
3Reliability
If electrodes are implanted at two separate points within a brain circuit with mismatched frequencies, then synchronous neural firing is destroyed and normal brain functioning is enabled, but the treatment protocol becomes more complex
Solution Approach 1:
The patent incorporates feedback mechanisms where the system monitors neural activity and adjusts stimulation frequencies accordingly. By continuously assessing the level of synchrony and patient response, the system can automatically modulate the frequency parameters to maintain optimal disruption of pathological synchrony. This feedback approach manages protocol complexity through automation, improving reliability of synchrony interruption while reducing the burden on clinicians to manually adjust parameters.
Solution Approach 2:
The patent utilizes periodic action by delivering electrical signals at multiple distinct frequencies in a coordinated manner. The system employs periodic stimulation patterns where different frequencies are applied at different time intervals or in sequence, creating a rhythmic disruption of synchronous neural firing. This periodic multi-frequency approach effectively targets pathological synchrony while providing a structured, manageable stimulation protocol that reduces operational complexity compared to continuous or random frequency modulation.
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 interrupts pathological synchrony in brain circuits, alleviating OCD symptoms and improving cognitive and motor functions, offering a more reliable treatment option for OCD and other disorders characterized by high connectivity.
Implementation Method 1
The signal generator is configured to generate a first signal at a first frequency and communicate the first signal to the first electrode, and generate a second signal at a second frequency and communicate the second signal to the second electrode
Data Source
AI summary
A method of using deep brain stimulation (DBS) for treating mental disorders associated with high connectivity in brain circuits, such as cortico-striato-thalamo-cortical (CSTC) circuits, is provided. The method comprises providing a first electrical signal having a first frequency to a first electrode implanted at a first location within a brain circuit and providing a second electrical signal having a second frequency to a second electrode implanted at a second location within the brain circuit. The first frequency and the second frequency are unequal.