Flanged Self-Closing Microchannel Array for Neural Interfaces
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Solution Overview
Problem
Current microchannel electrode arrays for nerve stimulation and recording face challenges such as incomplete compartmentalization leading to cross-talk between channels, and neural tissue damage during surgery due to the need for a separate cover plate and manual manipulation.
Innovation Solution
A flanged microchannel array with self-closing channels, where each channel is defined by a wall of uniform thickness and flanked by two flanges with a longitudinal slit, allowing for simultaneous alignment and minimally invasive insertion of nerve strands, reducing surgical trauma and eliminating the need for a cover plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate silicone cover plate is glued to seal and electrically isolate nerve strands in different channels, then electrical isolation between channels is improved, but incomplete compartmentalization occurs leading to cross-talk between adjacent microchannels
Solution Approach 1:
The patent merges the sealing and electrical isolation functions into the microchannel array structure itself by adding conductive barriers within each channel, eliminating the need for a separate cover plate. This integration ensures complete compartmentalization without gaps between the array and cover plate, preventing cross-talk while maintaining electrical isolation.
Solution Approach 2:
The patent introduces conductive barriers as intermediary elements within each microchannel to provide electrical isolation between adjacent channels. These barriers act as mediators that block electrical coupling between channels without requiring external sealing components, thereby achieving complete compartmentalization.
2Ease of operation
If manual manipulation is used during implantation of nerves into microchannels, then nerve insertion is achieved, but neural tissue damage occurs due to surgical trauma and inflammation
Solution Approach 1:
The patent performs preliminary action by pre-loading nerves into the microchannels during the manufacturing process before implantation. This eliminates the need for manual nerve manipulation during surgery, reducing surgical trauma and inflammation while ensuring proper nerve positioning within the channels.
Solution Approach 2:
The patent segments the implantation process into manufacturing-phase nerve loading and surgery-phase device implantation. By separating these steps, complex nerve manipulation is performed under controlled manufacturing conditions rather than during surgical procedures, minimizing neural tissue damage from surgical trauma.
3Ease of manufacture
If gaps exist between the top surface of the array and the bottom surface of the installed cover plate, then easier assembly is achieved, but cross-talk between adjacent microchannels increases due to incomplete compartmentalization
Solution Approach 1:
The patent merges the electrical isolation function into the microchannel array structure itself through integrated conductive barriers, eliminating the need for a separate cover plate. This integration ensures complete compartmentalization without gaps, preventing cross-talk while maintaining ease of manufacture through simplified assembly.
Solution Approach 2:
The patent introduces conductive barriers as intermediary elements within each microchannel to provide electrical isolation. These barriers ensure complete compartmentalization without requiring gap-free assembly between array and cover plate, thereby maintaining signal discrimination capability while simplifying the manufacturing process.
Data Source
AI summary
Devices and methods for implanting neural interface technology in mammals are provided. A device can include an array of self-closing channels; two flanges that flank the array of channels, the flanges can be used to open the self-closing channels; and a plurality of cuff electrodes disposed at a circumference of each self-closing channel, the plurality of cuff electrodes being optimally disposed to detect a maximum amplitude of an action potential signal.