Cortical Electrode Assembly with Grommet Attachment
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Solution Overview
Problem
Current cortical electrode assemblies lack flexibility and versatility in combining macro electrodes, micro-wire arrays, and depth electrodes for effective recording and stimulation of brain activity, particularly when traditional methods are insufficient for small or deep seizure foci.
Innovation Solution
A multiple-part cortical electrode assembly that includes a base electrode structure with pre-perforated holes for secure attachment of micro-wire arrays or depth electrodes, utilizing a grommet-like attachment and keyed configurations for precise positioning, allowing for the addition of micro-wire or depth electrodes as needed, with manufacturing methods that include a handheld introducing rod for easy assembly in a sterile field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional single-type electrode assemblies are used, then the structure is simple and easy to manufacture, but the versatility and adaptability for different recording needs are limited
Solution Approach 1:
The electrode assembly is divided into multiple independent components: a base cortical electrode structure and separate second electrode structures (micro-wire arrays or depth electrodes) that can be selectively attached. This segmentation allows the system to maintain simplicity when only basic functionality is needed while enabling enhanced versatility when additional electrode types are required.
Solution Approach 2:
The base cortical electrode structure is designed with universal attachment features (thru-holes with grommet-like structures) that can accommodate multiple types of second electrode structures. This multi-functionality allows a single base structure to serve various recording configurations, combining macro electrodes, micro-wire arrays, and depth electrodes in different combinations.
2Adaptability or versatility
If multiple electrode types are integrated into a single assembly, then the recording capability is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
By separating the electrode assembly into manufacturable components (base structure and attachable electrode arrays), each component can be manufactured using optimized processes for its specific requirements. The base cortical electrode can be manufactured separately from the micro-wire arrays or depth electrodes, allowing specialized manufacturing techniques for each component type without compromising the other.
Solution Approach 2:
The base cortical electrode structure is pre-manufactured with integrated thru-holes and grommet-like attachment structures built in during the base manufacturing process. This preliminary preparation of attachment features eliminates the need for complex post-assembly manufacturing steps, reducing overall manufacturing complexity while enabling versatile electrode combinations.
3Adaptability or versatility
If fixed electrode configurations are used, then the manufacturing precision is easier to control, but the flexibility in positioning and customization is reduced
Solution Approach 1:
The electrode assembly transitions from a fixed configuration to a dynamic, reconfigurable system. The attachable second electrode structures can be positioned at different locations on the base cortical electrode and secured through the thru-holes, allowing flexible positioning while maintaining secure attachment. This dynamic capability enables customization for different surgical scenarios without compromising manufacturing precision of the individual components.
Data Source
AI summary
Cortical electrode assemblies having a first flexible electrode body and a second flexible electrode body. The first electrode body may have an array of macro electrode contacts and the second electrode body may have a micro-wire electrode array or a depth electrode structure. The first electrode body has at least one aperture and the second electrode body may have a grommet-like body structure which may be positioned in predetermined thru holes of the first electrode body with respect to the electrode grid.