Hybrid Clustered Neural Interface for Tissue Trauma Reduction
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Solution Overview
Problem
Conventional neural interface systems face reliability and longevity issues due to degradation over time and cause tissue trauma, leading to neural signal degradation and reduced usability.
Innovation Solution
A hybrid clustered neural interface system featuring a flexible substrate with a surface electrode array and a penetrating electrode array, designed to be highly customizable and minimize tissue reactions, includes a flexible neural probe with electrodes distributed to align with neural clusters for optimal signal redundancy and control, and a processor circuit for signal processing and stimulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional implantable neural interface systems are used, then neural signal recording and stimulation functions are provided, but reliability and longevity are reduced due to device degradation over time
Solution Approach 1:
The neural interface system is divided into multiple independent flexible neural probes rather than a single rigid device. Each probe can be independently implanted and functions autonomously, allowing the system to maintain reliability even if individual probes degrade or fail over time. This segmentation enables modular replacement and extends overall system longevity.
2Reliability
If conventional neural interface systems are implanted, then neural signal recording and stimulation are achieved, but tissue trauma occurs causing neural signal degradation
Solution Approach 1:
The invention uses flexible neural probes with thin-film construction that can conform to the soft neural tissue. This flexibility minimizes mechanical mismatch and reduces tissue trauma during implantation and over time. The flexible substrate allows the device to move with tissue without causing damage, thereby maintaining neural signal quality and reducing harmful tissue responses.
3Loss of information
If a flexible substrate with distributed electrode arrays is used, then signal redundancy and information flow are increased, but device complexity increases
Solution Approach 1:
Multiple flexible neural probes with electrode arrays are combined into a single integrated flexible substrate structure. This merging approach increases signal redundancy and information flow by providing multiple recording and stimulation sites simultaneously, while the common flexible substrate reduces overall device complexity compared to assembling multiple separate rigid devices.
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 significantly increases interface reliability and information flow while reducing adverse tissue reactions, enhancing the longevity and effectiveness of neural signal recording and stimulation.
Implementation Method 1
electrodes of the surface electrode array and the penetrating electrode array are configured to one or both of receive a neural signal from a neural signal source
Implementation Method 2
electrodes of the surface electrode array and the penetrating electrode array are configured to one or both of receive a neural signal from a neural signal source and provide electrical stimulation energy to a neural stimulation target
Data Source
AI summary
An apparatus comprises a flexible substrate. The flexible substrate includes a first substrate surface, a surface electrode array that includes a plurality of electrodes disposed on the first substrate surface, one or more flexible neural probes substantially orthogonal to the first substrate surface and insertable into biological tissue, and a penetrating electrode array that includes a plurality of electrodes formed on the one or more flexible neural probes, wherein electrodes of the surface electrode array and the penetrating electrode array are configured to one or both of receive a neural signal from a neural signal source and provide electrical stimulation energy to a neural stimulation target.