Test Device with Handle for Fluid Sample Handling
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Solution Overview
Problem
Conventional test strips for analyzing fluid samples are difficult to handle, prone to being dropped or lost, and result in uneven sample application due to the need for manual grasping, which complicates sample collection and distribution.
Innovation Solution
A test device with a handle attached to a planar support member, allowing for easier handling and sample application, featuring reagent pads that change color or emit electromagnetic wavelengths proportional to analyte concentration, and designed for use with or without an analyzer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional test strip is manually grasped and dipped into the sample container, then the test strip can be applied to the sample, but the test strip is susceptible to being dropped and lost in the sample container
Solution Approach 1:
A spoon-shaped tool serves as an intermediary device between the user's hand and the test strip. The tool includes a recess that receives and secures the test strip, allowing the user to manipulate the test strip without direct finger contact. This mediator prevents the test strip from being dropped or lost in the sample container while maintaining ease of application.
2Ease of operation
If a conventional test strip is manually grasped for dipping, then the test strip can be applied to the sample, but the fingers of the user may touch the sample within the container
Solution Approach 1:
The spoon-shaped tool acts as a barrier between the user's fingers and the sample. The test strip is held in the recess of the tool, allowing the user to dip the test strip into the sample without direct finger contact. This eliminates the risk of contaminating the sample with finger oils or other substances from the user's hands.
3Ease of operation
If a conventional test strip is manually grasped for dipping, then the test strip can be applied to the sample, but uneven application of the fluid to the test strip occurs
Solution Approach 1:
The spoon-shaped tool provides a stable, fixed position for the test strip during the dipping process. The recess holds the test strip in a consistent orientation, ensuring that the sample is distributed evenly across the test strip surface. This eliminates the uneven application that occurs when the test strip is held by fingers, which may slip or tilt during insertion.
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 test device improves handling and sample distribution, reducing the risk of mishandling and loss, while providing accurate analyte concentration analysis through color changes or wavelength emission, facilitating efficient sample analysis.
Implementation Method 1
The test strip may be designed to change to a particular color or range of colors corresponding to the concentration of the chemicals in the solution being examined or to emit a particular electromagnetic wavelength when irradiated which is correlated to the amount or concentration of the analyte in the solution
Implementation Method 2
The test strip may be designed to change to a particular color or range of colors corresponding to the concentration of the chemicals in the solution being examined or to emit a particular electromagnetic wavelength when irradiated
Data Source
AI summary
A test device for analyzing fluid samples. The test device includes a planar support member for supporting reagent pads, and a handle attached to, or for attaching to the planar support member. The test device can be treated with a fluid sample by disposing a fluid sample on the reagent pads. The fluid sample can be disposed onto the reagent pads by the handle, or by dipping the test device into the fluid sample.