Foldable Paper Test Device for Fluid Sample Analysis
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Solution Overview
Problem
Conventional rapid diagnosis test devices are cumbersome, costly, and complex, particularly for non-professional users, due to their reliance on plastics and intricate operation procedures, and they often require manual application of samples using droppers.
Innovation Solution
A foldable paper-based test device with a housing that can change shape, allowing for easy sample application and protection of the testing element, reducing the need for manual handling and plastic usage, and enabling simpler operation by exposing the sample application area for direct contact with liquid samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional plastic-based test devices are used, then device strength and durability are improved, but environmental cost and production cost increase
Solution Approach 1:
The patent changes the material parameter from plastic to paper, transforming the device into a biodegradable form that reduces environmental impact while maintaining functional integrity through proper paper selection and structural design
Solution Approach 2:
The patent employs a disposable paper-based test device that is inexpensive to produce and dispose, eliminating the need for expensive plastic materials and complex environmental disposal processes associated with conventional devices
2Strength
If conventional plastic-based test devices are used, then device strength and durability are improved, but production cost increases
Solution Approach 1:
The patent changes the material parameter from plastic to paper, significantly reducing production cost while maintaining adequate strength through proper paper selection and structural design
Solution Approach 2:
The patent employs a disposable paper-based test device that is inexpensive to produce, eliminating the need for expensive plastic materials and complex manufacturing processes
3Manufacturing precision
If conventional test devices with fixed structure are used, then manufacturing precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent introduces a foldable structure that transitions from a compact closed state to an expanded open state, enabling the testing element to be exposed for sample application while maintaining manufacturing precision through predefined fold lines and structural guides
4Measurement precision
If conventional test devices require manual sample application are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent enables the device to automatically absorb and transport the liquid sample through capillary action, eliminating the need for manual dropper application and reducing device complexity while maintaining measurement precision
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
The paper-based device reduces production and environmental costs, simplifies operation, and makes rapid diagnosis more accessible and convenient for household use by eliminating the need for water droppers and complex handling steps.
Implementation Method 1
The use of paper as a test carrier... the paper carrier is capable of achieving changes in shape arbitrarily
Data Source
AI summary
The present invention provides a test device. The device includes a testing element and a housing accommodating the testing element; the housing is formed by folding a card which is made of a paper material. The testing element is located in the housing, and the housing is allowed to be in different change states to achieve the detection or assay of an analyte in a sample.