Electrochemical Test Strip Electrode Setting via Injection Molding
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Solution Overview
Problem
The manufacturing process for electrochemical test strips with metal electrodes is complex and costly, requiring high-precision equipment, which limits their widespread application.
Innovation Solution
A method involving molding a metal conductive rack with conductive objects, embedding a polymer plastic inspection body, and forming a strip carrier to simplify the process, ensuring precise exposure of contact surfaces and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-precision apparatuses are used to set electrodes on the inspection portion, then the manufacturing precision and reliability are improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the electrode setting function with the inspection body structure itself. The conductive objects are integrated into the inspection body as a unified component, eliminating the need for separate high-precision electrode setting apparatuses. The injection molding process simultaneously forms both the inspection body and the conductive object positions, merging multiple manufacturing steps into one.
Solution Approach 2:
The inspection body structure serves its own electrode setting function. The conductive objects are positioned and fixed within the inspection body through its own structural features (through holes, recesses, or integrated positions), without requiring external specialized apparatuses. The inspection body essentially sets its own electrodes during the injection molding process.
2Manufacturing precision
If multiple processes are used to manufacture the electrochemical test strip, then the manufacturing precision is improved, but the productivity decreases and manufacturing cost increases
Solution Approach 1:
The conductive objects are pre-positioned and integrated into the inspection body during the injection molding process itself, before subsequent manufacturing steps. The injection molding creates the inspection body with built-in positions for conductive objects, eliminating the need for separate electrode setting operations and reducing the total number of manufacturing processes.
Solution Approach 2:
The patent merges the inspection body manufacturing and conductive object positioning into a single injection molding process. This combines multiple previously separate steps (manufacturing inspection body, setting electrodes, fixing conductive objects) into one integrated process, improving productivity while maintaining precision through the molded-in positioning features.
3Reliability
If the transmission contact surface is sheltered by the strip carrier, then the reliability is improved, but the ease of operation decreases
Solution Approach 1:
The strip carrier is designed with differentiated local properties: it provides sheltering protection for the inspection body and reception contact surface, but deliberately leaves the transmission contact surface exposed or accessible. This local quality differentiation allows the same component to simultaneously provide protection where needed and accessibility where required for signal transmission.
Solution Approach 2:
The contact surfaces are functionally segmented into reception and transmission zones with different protection requirements. The reception contact surface is sheltered within the inspection body structure, while the transmission contact surface is positioned to be accessible from the strip carrier side, allowing independent optimization of protection and accessibility for each function.
Data Source
AI summary
The present invention relates a setting method for a conductive object of electrochemical test strip. In the embodiment, this manufacturing process is not complex, convenient, and has well precision, such that the cost of manufacturing an electrochemical test strip is reduced effectively, the disadvantage of past manufacturing process is improved. The present invention is highly applied and convenient, so that wide application can be expected in the future.