Depth Electrode EEG Monitoring for Controlled Cortical Lesioning
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Solution Overview
Problem
Existing cortical lesioning procedures for epilepsy are invasive and risky, often leading to unintended brain damage, and lack the ability to monitor and ablate the seizure focus in a single surgical process.
Innovation Solution
A minimally invasive cortical lesioning system using depth electrodes with integrated EEG monitoring and heating modules that allow for simultaneous lesion generation and EEG recording, enabling precise ablation of the seizure focus while minimizing brain damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical excision or laser ablation is performed to remove seizure focus, then seizure control is improved, but risk of unintended brain damage and complications increases
Solution Approach 1:
The system continuously monitors EEG activity during the lesioning procedure and uses this feedback to adjust heating parameters in real-time. The EEG recorder captures brain electrical activity while the heat controller applies current, allowing the operator to observe seizure focus suppression and adjust treatment to achieve seizure control while minimizing damage to surrounding normal tissue.
Solution Approach 2:
The depth electrode system integrates multiple functions into a single device that performs both monitoring and treatment. The electrode with integrated heating modules and EEG contacts enables the tissue to be monitored and treated by the same instrument, reducing the need for separate procedures and minimizing additional invasive actions that could cause harm.
2Measurement precision
If multiple separate procedures are performed (EEG monitoring followed by surgical excision), then localization precision is improved, but treatment time and procedural complexity increase
Solution Approach 1:
The system merges EEG monitoring and lesioning functions into a single integrated procedure. The depth electrode contains both EEG recording contacts and heating modules that can be activated sequentially or simultaneously, allowing localization and treatment to be performed in one continuous process rather than requiring separate surgical interventions.
Solution Approach 2:
The depth electrode serves multiple functions: it acts as both an EEG monitoring electrode and a heating element for lesion generation. This multi-functional device eliminates the need for separate monitoring and treatment procedures, reducing overall treatment time while maintaining localization precision through continuous EEG feedback.
3Measurement precision
If open craniotomy is performed for grid electrode placement, then EEG monitoring capability is improved, but invasiveness and surgical risk increase
Solution Approach 1:
The system extracts the need for open craniotomy by using depth electrodes that can be inserted through smaller access points. The depth electrode with integrated heating modules and EEG contacts allows for monitoring capability to be achieved with less invasive insertion methods, reducing surgical complexity and risk while maintaining EEG monitoring precision.
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
Enables safer, single-procedure treatment of epilepsy by allowing real-time EEG monitoring and controlled lesioning, preserving brain function and reducing complications.
Implementation Method 1
at least one heat controller coupled with the shaft for providing an electrical current to at least one of the one or more contacts or of the one or more heating modules for generating one or more lesions in the target area of the patient's brain
Implementation Method 2
at least one of the one or more contacts is adapted to be used to monitor EEG activity of the patient's brain
Data Source
AI summary
A system for treating epileptic seizures by lesioning an affected area of a patient's brain is provided. The system includes at least one depth electrode comprising one or more contacts and one or more heating modules positioned longitudinally along a shaft. The depth electrode is insertable in the affected area of the patient's brain, at least one of the contacts is used to monitor EEG activity of the brain, and a heat controller coupled with the shaft for providing an energy input to one or both of the contacts or the heating modules for generating a lesion in the affected area of the patient's brain based on the concurrently and continuously monitored EEG activity of the brain.