Microfluidic Electrode Screening for Nerve Conduction Velocity
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Solution Overview
Problem
Existing technologies lack a systematic approach to identify and select optimal electrical stimulation conditions for treating diseases affecting nerve cells due to demyelination, which is a common cause of chronic conditions.
Innovation Solution
An electroceutical screening device and method that applies electrical stimulation to nerve cells or clusters through a microfluidic chip with multiple channels and electrodes, measuring conduction velocity to evaluate and optimize therapy conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional cell potential measurement methods are used, then single-point measurement is simple to implement, but multipoint simultaneous measurement capability is lost
Solution Approach 1:
The electrode assembly is segmented into multiple independent electrodes (first electrode E1, second electrodes E21-E2n, third electrodes E31-E3m) positioned at different locations corresponding to multiple channels. This segmentation enables simultaneous multipoint measurement of cell clusters in different channels while maintaining manageable structural complexity through systematic arrangement.
Solution Approach 2:
The electrode assembly serves multiple functions: the first electrode E1 applies electrical stimulation to cell bodies, while the second and third electrodes E21-E2n and E31-E3m simultaneously measure action potentials from multiple channels. This multi-functionality achieves multipoint measurement capability without proportionally increasing device complexity.
2Measurement precision
If electrical stimulation is applied to cell bodies, then nerve cell activation is achieved, but precise measurement of conduction velocity requires complex electrode positioning
Solution Approach 1:
Electrodes are positioned at specific locations corresponding to each channel with optimized spatial relationships. The second electrodes E21-E2n and third electrodes E31-E3m are arranged to measure action potentials at different positions along the cell clusters, enabling local quality measurement that provides accurate conduction velocity data without requiring complex overall positioning.
Solution Approach 2:
The measurement system uses the action potentials detected by the second and third electrodes to calculate conduction velocity through timing differences. This feedback mechanism allows precise measurement of nerve conduction properties by analyzing the temporal characteristics of electrical signals propagating through the cell clusters.
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 the identification of optimal electrical stimulation conditions for peripheral nerve disease therapy by evaluating remyelination through various electrical stimulation tests, providing a platform for constructing cell models and measuring conduction velocity.
Implementation Method 1
a substrate which is coupled to the microfluidic chip and includes an electrode assembly including electrodes provided in positions each corresponding to the cell culture part and the multiple channels, respectively
Data Source
AI summary
The present invention relates to an electroceutical screening device and a screening method using same, respectively, wherein an electrical stimulation is applied, through the electrodes, to the cell clusters received in the channels, and the potentials of the cell clusters are measured so as to measure neural activity, and thus electrical stimulation tests are conducted in various ways, and by measuring conduction velocity according to the various electrical stimulation tests, conditions for electrical stimulation therapy are assessed.