Liquid Sample Collector With Recessed Adhesive Fixing
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Solution Overview
Problem
Conventional liquid sample collectors, such as reagent strips and saliva collectors, face issues with adhesive use that complicates manufacturing, poses environmental and health risks, and requires cumbersome processes, while existing saliva collectors with integrated indicator strips suffer from adhesive leakage and inefficient liquid absorption.
Innovation Solution
A collector design featuring a fixing element for the absorption element, which includes an elastic sheet with a channel and a rod-shaped structure, allowing for adhesive application without direct contact with the absorption element, and uses elastic fixing elements to secure the absorption element in a chamber, eliminating the need for adhesive application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used to bond the absorption element to the fixing element, then the absorption element can be securely fixed, but the gluing process becomes complicated and adhesive leakage occurs
Solution Approach 1:
The patent extracts the adhesive application step from the assembly process by designing a fixing element with a dedicated recess that physically confines the adhesive. This recess structure prevents adhesive from spreading to unwanted areas, eliminating the need for complex adhesive application controls and reducing manufacturing complexity while maintaining secure bonding.
Solution Approach 2:
The recess in the fixing element acts as an intermediary structure between the adhesive and the absorption element. It provides a controlled interface that holds the adhesive in place during assembly, preventing direct contact between adhesive and the indicator strip channel, thus avoiding adhesive leakage issues while ensuring proper bonding.
2Strength
If adhesive is applied to bond the absorption element, then secure fixation is achieved, but adhesive contains harmful substances and causes environmental damage
Solution Approach 1:
The patent extracts and isolates the adhesive within a dedicated recess structure, preventing it from contacting harmful components like the indicator strip. This containment approach minimizes the harmful effects of adhesive substances while maintaining necessary bonding strength, and allows for better control over adhesive placement and quantity.
Solution Approach 2:
The recess structure, which initially seems to add complexity, actually converts the potential harm of adhesive leakage into a benefit by providing a controlled environment for adhesive application. The same structure that confines the adhesive also protects the indicator strip from contamination, turning a harmful substance into a controlled element.
3Strength
If adhesive is applied to fix the absorption element, then bonding is achieved, but the process is time-consuming and difficult for mass production
Solution Approach 1:
The fixing element is pre-designed with an integrated recess structure that prepares the bonding interface in advance. This preliminary structural preparation eliminates the need for complex adhesive application steps during assembly, as the recess automatically confines the adhesive and guides its placement, significantly speeding up the manufacturing process for mass production.
Solution Approach 2:
The fixing element is segmented into distinct functional zones: the recess for adhesive containment, the channel for the indicator strip, and the bonding surface for the absorption element. This segmentation allows each component to be manufactured separately and assembled quickly, improving productivity while maintaining bonding strength.
4Strength
If adhesive is applied around the channel, then the absorption element can be fixed, but adhesive may leak into the channel and block the indicator strip insertion
Solution Approach 1:
The recess acts as an intermediary barrier between the adhesive and the indicator strip channel. It provides a physical boundary that confines the adhesive to the bonding area, preventing it from encroaching on the channel space needed for indicator strip insertion, thus ensuring reliable assembly without adhesive contamination.
Solution Approach 2:
The recess structure provides preliminary protection against adhesive leakage into the channel before the actual assembly process begins. By pre-configuring the bonding interface with confined boundaries, the design preemptively prevents the harmful effect of adhesive contamination, ensuring the channel remains clear for indicator strip 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
Simplifies assembly and adhesive application, prevents adhesive leakage, ensures efficient liquid absorption, and allows for accurate indication of saturation without compromising the integrity of the indicator strip.
Implementation Method 1
an absorption element for absorbing the liquid sample
Data Source
AI summary
The invention discloses a collector for a liquid sample, where the collector includes an absorption element for absorbing the liquid sample; and a fixed tray for fixing the absorption element, where the fixed tray is connected with a rod including a channel, the channel is used for accommodating an indicator strip that indicates presence or absence of a sufficient liquid or a testing element for testing an analyte in the liquid sample, the channel includes an outlet, and the outlet is in fluid communication with the fixed tray.