Working Wire Coating Control for Continuous Biosensor Throughput
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Solution Overview
Problem
The high cost and inefficiency of manufacturing working wires for continuous glucose monitors, along with the need for precise manufacturing to ensure accurate results, hinder widespread adoption of these devices due to the financial burden on patients and the complexity of the manufacturing process.
Innovation Solution
An automated system measures working wire dimensions during the dipping process and adjusts parameters in real-time to optimize the coating thickness, using environmental and solution factors to minimize the number of dips required, thereby improving efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple manual dipping steps are used to achieve desired coating thickness, then manufacturing precision is improved, but productivity deteriorates due to time-consuming processes
Solution Approach 1:
The system incorporates in-line automated measurement that continuously monitors coating thickness during the dipping process. Real-time feedback is provided to operators, enabling immediate adjustments to dipping parameters (such as withdrawal speed, dip depth, or coating solution viscosity) to achieve target thickness specifications without requiring multiple trial dips or post-processing measurements.
Solution Approach 2:
The measurement system is integrated into the dipping process itself rather than being applied afterward. By measuring coating thickness in-line during manufacturing, the system eliminates the need for subsequent inspection steps and allows for immediate corrective action if thickness deviations are detected, thereby streamlining the overall process.
2Manufacturing precision
If multiple dipping processes are performed to achieve accurate coating thickness, then manufacturing precision is improved, but loss of time increases
Solution Approach 1:
Real-time measurement feedback during the dipping process enables single-pass or reduced-pass coating by immediately indicating when target thickness is achieved. This eliminates the traditional approach of performing multiple dipping cycles with intermediate drying and measurement steps, significantly reducing total manufacturing cycle time while maintaining precision.
Solution Approach 2:
The in-line measurement system operates continuously during the dipping process without interrupting production flow. Measurements are taken in real-time as wires pass through the coating solution, allowing for continuous monitoring and adjustment without stopping the dipping line or requiring separate inspection stations.
3Device complexity
If conventional manufacturing processes are used, then device complexity is reduced, but productivity deteriorates due to inefficiency
Solution Approach 1:
The system replaces manual measurement and inspection methods with automated optical or electromagnetic measurement technology integrated into the dipping line. This substitution of mechanical/manual operations with automated sensing and control systems increases manufacturing efficiency and throughput while maintaining process simplicity from the operator's perspective.
Solution Approach 2:
The measurement and control system operates autonomously during the dipping process, automatically measuring coating thickness and providing feedback without requiring manual intervention. The system self-regulates to maintain optimal coating parameters, reducing the need for complex manual monitoring and adjustment procedures.
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 reduces manufacturing costs and defects, enhances the accuracy of working wires, and increases throughput by minimizing the number of dips needed to achieve the desired coating thickness, making continuous glucose monitoring more accessible.
Implementation Method 1
A plurality of diameters is measured along a length of at least two coated wires of the plurality of wires in the fixture, using an automated measurement system
Implementation Method 2
dipping the plurality of wires into a coating solution according to parameters for a dipping process
Data Source
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Figure 3A
AI summary
Methods for coating a working wire for a continuous biological sensor include providing a plurality of wires in a fixture and dipping the plurality of wires into a coating solution according to parameters for a dipping process. A plurality of diameters is measured along a length of at least two coated wires of the plurality of wires in the fixture, using an automated measurement system, as in an in-line process. A controller that is in communication with the automated measurement system determines a thickness difference, the thickness difference being a difference between a thickness setpoint and an aggregate criteria for the plurality of diameters. The controller calculates adjusted parameters for the dipping process based on the thickness difference.