Implantable Occipital Pulse Generator for Neural Adaptation
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Solution Overview
Problem
Current electrical stimulation therapies for chronic neurological disorders such as Chronic Migraine and Parkinson's suffer from neural adaptation, leading to reduced efficacy and durability, and existing devices designed for the occipital region face hardware deficiencies causing adverse events like lead migration and discomfort.
Innovation Solution
A system with a micro pulse generator implanted directly in the occipital region, using variable and deterministic stimulation waveforms to counteract neural adaptation, and a form factor designed for comfort and durability, incorporating a rechargeable battery, SoC chip, and Bluetooth Low Energy communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If constant electrical stimulation is applied to treat chronic neurological disorders, then initial therapeutic effect is achieved, but neural adaptation occurs leading to reduced efficacy over time
Solution Approach 1:
The patent implements dynamic stimulation by varying multiple parameters including pulse amplitude, pulse width, frequency, and inter-pulse intervals in a deterministic pattern. This dynamic variation prevents neural adaptation while maintaining therapeutic efficacy, directly resolving the contradiction between initial effectiveness and long-term durability.
Solution Approach 2:
The system employs periodic stimulation bursts with specific inter-pulse frequencies and duty cycles. By organizing stimulation into periodic patterns with varying parameters within each period, the system maintains therapeutic effect while preventing adaptation, thus improving both reliability and duration of action.
2Ease of operation
If traditional pulse generators are used in the occipital region, then electrical stimulation can be delivered, but hardware deficiencies cause lead migration and patient discomfort
Solution Approach 1:
The system segments the pulse generator into a small modular unit that can be implanted directly in the occipital region near the target nerves. This segmentation allows for precise localization of the stimulation source, reducing lead length and eliminating lead migration issues while improving patient comfort and device stability.
Solution Approach 2:
The patent introduces a small form-factor pulse generator as an intermediary device that can be positioned optimally in the occipital region. This intermediary placement eliminates the need for long leads connecting remote implantable devices to the occipital nerves, thereby preventing lead migration and improving both comfort and reliability.
3Reliability
If stimulation parameters are increased to overcome neural adaptation, then therapeutic effect is maintained, but side effects and patient discomfort increase
Solution Approach 1:
Instead of continuously increasing stimulation intensity, the system dynamically varies parameters in a controlled manner. By alternating between different amplitude, pulse width, and frequency levels within a deterministic pattern, the system maintains therapeutic effect without requiring sustained high-intensity stimulation, thus reducing side effects.
Solution Approach 2:
The system employs coordinated changes in multiple stimulation parameters (amplitude, pulse width, frequency, inter-pulse intervals) rather than simply increasing one parameter. This multi-parameter modulation maintains therapeutic efficacy while keeping individual parameter levels within comfortable ranges, reducing harmful side effects.
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 effectively reduces headache days and improves quality of life by overcoming neural adaptation, minimizing adverse events, and enhancing therapy efficacy and durability.
Implementation Method 1
Electrical stimulation of the nervous system is widely used to treat these chronic conditions
Implementation Method 2
these therapies have numerous opportunities for improvement. For example, a large number of people in the United States are afflicted with Chronic Migraine
Data Source
AI summary
A system and method for providing electrical stimulation to biological tissue to treat medical conditions. The system can include a lead configured to be positioned in contact with biological tissue proximate one or more occipital nerves, an implantable pulse generator configured to deliver electrical stimulation to the biological tissue via the one or more leads, and/or a power source configured to operatively connect and supply power to the implantable pulse generator. The system can further include a processor configured to communicate with the implantable pulse generator. The processor can operate the implantable pulse generator to deliver the electrical stimulation to the biological tissue via the lead. The implantable pulse generator can deliver the electrical stimulation by applying a stimulation waveform or a stimulation pattern. The stimulation waveform can include a series of stimulation pulses that can vary over time, which can reduce an effect of neural accommodation or adaptation.