Electropolymerized Sensor Wires for Repeatable CGM Membrane Coating
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Solution Overview
Problem
Existing CGM sensors face challenges in manufacturing accuracy and repeatability due to the construction of electrode layers, leading to inconsistent performance and frequent replacements.
Innovation Solution
A system and method for electropolymerizing membrane layers on working wires using a wire-holding fixture, electropolymerization stations, and a controller to apply voltage, enabling batch processing and real-time monitoring of cyclic voltammetry curves for precise control and verification of the electropolymerization process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional manufacturing processes are used for electrode layers, then device construction is simpler, but manufacturing accuracy and repeatability deteriorate
Solution Approach 1:
The patent replaces traditional mechanical coating processes with electropolymerization, an electrochemical process that uses electrical current to initiate polymerization reactions directly on the electrode surface. This substitution enables precise control over membrane layer thickness and composition through electrical parameters, significantly improving manufacturing accuracy and repeatability while maintaining manageable process complexity through automated control systems
Solution Approach 2:
The patent utilizes electropolymerization parameters such as voltage, current density, pulse duration, and cycling conditions to precisely control the formation of membrane layers. By adjusting these electrical and chemical parameters, the process achieves consistent and repeatable manufacturing of electrode structures with controlled thickness and porosity, resolving the contradiction between manufacturing precision and process complexity
2Manufacturing precision
If electropolymerization is used for membrane layer construction, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical coating processes with electropolymerization, an electrochemical process that uses electrical current to initiate polymerization reactions directly on the electrode surface. This substitution enables precise control over membrane layer thickness and composition through electrical parameters, significantly improving manufacturing accuracy and repeatability while maintaining manageable process complexity through automated control systems
Solution Approach 2:
The electropolymerization process is self-regulating through feedback control mechanisms where the polymerization reaction itself provides visual and electrical feedback on progress. The process automatically adjusts to maintain optimal conditions, reducing the need for complex external monitoring and control systems while ensuring high manufacturing precision
3Productivity
If batch processing is implemented, then productivity is improved, but process control complexity increases
Solution Approach 1:
The patent combines multiple electropolymerization cycles and multiple electrode treatments into a single batch processing operation. By processing multiple electrodes simultaneously through automated sequencing and control, the system achieves high manufacturing throughput while consolidating control functions into integrated software that manages the complexity of coordinating multiple processes
4Measurement precision
If real-time monitoring is added for cyclic voltammetry curves, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements real-time monitoring of cyclic voltammetry curves during electropolymerization to provide immediate feedback on process quality and membrane layer formation. This feedback mechanism enables precise measurement of polymerization progress and allows for real-time adjustments, ensuring high measurement precision while using software-based control to manage system complexity
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
This approach enhances manufacturing scalability, accuracy, and efficiency, allowing for precise calibration of sensors and reducing the need for frequent replacements by ensuring consistent performance through traceable manufacturing parameters and real-time process verification.
Implementation Method 1
A controller is configured to apply a voltage to the plurality of working wires through the respective terminals and electrical contacts to initiate electropolymerization of the material from the electropolymerization solution to form a polymer layer on each working wire
Data Source
AI summary
A system includes a wire-holding fixture configured to be received in an EP station. The wire-holding fixture comprises terminals, and each terminal is electrically coupled to a respective working wire of a plurality of working wires. The working wires extend away from the wire-holding fixture. A set of EP stations is included, and each EP station is configured to receive the wire-holding fixture. A container is configured to hold an electropolymerization solution and positioned beneath the EP station such that the working wires is immersible. A board comprising a plurality of electrical contacts is included, and each electrical contact is configured to electrically engage a corresponding terminal. A controller is configured to apply a voltage to the working wires through the respective terminals and electrical contacts to initiate electropolymerization of the material from the electropolymerization solution to form a polymer layer on each working wire.