Fan-Shaped Neurotrophic Electrode Array for Neural Signal Detection
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Solution Overview
Problem
Traditional neurotrophic electrodes have an inadequate number of single units, limiting their effectiveness in long-term neural signal detection without signal loss or scarring.
Innovation Solution
A 16-channel neural electrode array is designed on a fan-shaped substrate with a dielectric material, featuring a triangular portion with a convexly curved base and elongated lead members, where each electrode is embedded and exposed for optimal neural contact, and the array is rolled into a cone shape for implantation within a glass cone to promote neurite growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional neurotrophic electrodes are used, then long-term stability and signal integrity are maintained, but the number of single units detected per electrode is inadequate
Solution Approach 1:
The electrode array is segmented into multiple discrete electrode contacts (16 channels) arranged on a fan-shaped substrate, allowing each electrode to independently detect neural signals while maintaining the neurotrophic benefits of the original design. This segmentation increases the quantity of detectable single units without compromising signal stability.
Solution Approach 2:
The electrode array transitions from a linear wire configuration to a two-dimensional fan-shaped arrangement with multiple electrodes distributed across the substrate surface. This dimensional change allows simultaneous contact with multiple neural elements, increasing the number of detectable single units while preserving the biocompatible neurotrophic properties.
2Quantity of substance
If more electrodes are added to increase single unit detection, then the number of single units increases, but device complexity increases
Solution Approach 1:
Multiple electrode contacts are merged onto a single fan-shaped substrate member, integrating 16 channels into one cohesive structure. This merging approach increases the number of detectable single units while managing device complexity through unified construction rather than separate components.
Solution Approach 2:
The fan-shaped substrate serves multiple functions simultaneously: it provides structural support, electrical insulation, mechanical flexibility, and a platform for multiple electrode contacts. This multi-functionality reduces overall device complexity by consolidating several roles into a single component.
3Ease of operation
If the electrode array is made flexible for implantation, then ease of insertion improves, but manufacturing precision becomes more difficult
Solution Approach 1:
The electrode array uses a thin fan-shaped substrate that provides flexibility for easy implantation while maintaining sufficient structural integrity. The substrate's thin-film construction allows bending and conforming to tissue surfaces without compromising the precision of electrode positioning or the accuracy of signal detection.
Data Source
AI summary
An electrode array includes a fan-shaped substrate member. The fan-shaped substrate member includes a dielectric material and that has a triangular portion with a convexly curved base from which a first side and an opposite second side extend to a truncated apex that includes a concavely curved surface. An elongated lead member includes the dielectric material and extends from the base adjacent to a selected one of the first side and the second side. The elongated lead member is contiguous with the fan-shaped substrate member. Each of a plurality of wires is embedded in the fan-shaped substrate member and the elongated lead member. Each of a corresponding plurality of electrodes is electrically coupled to a different one of the plurality of wires. Each of the corresponding plurality of electrodes includes an exposed surface.