Test Kit Drainage Structure for Spill-Free Sample Delivery
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Solution Overview
Problem
Traditional disposable point-of-care testing products face issues with sample addition, where the liquid sample may not be fully delivered to the test strip, leading to insufficient volume, contamination risks, and potential spilling or splashing during the sample addition process.
Innovation Solution
A test kit design with a storage chamber containing a sample injection port, an enclosure with strategically placed holes and grooves, and a diversion system that ensures the liquid sample is guided efficiently into the test kit without blocking, preventing spilling or splashing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sample addition hole protrudes out of the upper cover to form a receiving chamber, then the sample addition operation is simplified, but the liquid sample may spill or splash out of the sample addition region during squeezing
Solution Approach 1:
A drainage member with a drainage channel is introduced as an intermediary structure between the sample addition hole and the test strip. This mediator guides the liquid sample flow through a controlled path, preventing uncontrolled spilling and splashing while maintaining simplified sample addition operation.
Solution Approach 2:
The harmful function of the sampling stick blocking the sample addition hole is extracted and eliminated by designing the hole to extend through the upper cover, allowing the sampling stick to pass through without obstruction while the drainage member controls the liquid flow path separately.
2Productivity
If the sampling stick blocks the sample addition hole during sample addition, then the liquid sample cannot be delivered to the test strip in time, but releasing the sampling stick causes the sample to spill or splash out
Solution Approach 1:
The drainage member acts as an intermediary flow path that works simultaneously with the sampling stick in place. It provides an alternative route for liquid sample to reach the test strip, preventing accumulation when the sampling stick blocks the sample addition hole, while the controlled drainage channel prevents spilling.
Solution Approach 2:
The sample delivery path is segmented into multiple channels: the primary path through the sample addition hole and the sampling stick, and the secondary path through the drainage member. This segmentation ensures continuous sample delivery even when one path is blocked, while the drainage channel controls flow to prevent spilling.
3Reliability
If the sampling stick is released midway during squeezing, then the liquid sample retained in the sampling stick cannot reach the sample pad, but the sampling stick may fall out to contaminate the environment
Solution Approach 1:
The drainage member serves as a backup intermediary path that can deliver the retained liquid sample from the sampling stick to the test strip even when the sampling stick is released. The controlled drainage channel ensures this backup path prevents environmental contamination while maintaining sample delivery completeness.
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 design effectively prevents liquid sample from spilling or splashing, ensuring safe and complete delivery to the test strip, reducing environmental contamination and operator risk.
Implementation Method 1
a drainage member (302) having a drainage channel (3021) is further provided in the test kit, and the drainage channel (3021) is in communication with the sample addition hole (301) and the test strip (200), so that the liquid sample can be delivered to the test strip (200) via the drainage channel (3021)
Implementation Method 2
the drainage member (302) having a drainage channel (3021) is further provided in the test kit, and the drainage channel (3021) is in communication with the sample addition hole (301) and the test strip (200), so that the liquid sample can be delivered to the test strip (200) via the drainage channel (3021)
Implementation Method 3
the immunochromatographic principle is used for delivering the sample on the test strip
Data Source
Figure 1~3
Figure 4~6
Figure 7~11
AI summary
The present invention provides a test device, including a test kit (300) and a sample collector (200). The test kit (300) includes a storage chamber (6), a bottom plate (7) with a sample injection port (3) is disposed in the storage chamber (6), an enclosure (5) is disposed on the periphery of the storage chamber (6), and a hole in communication with the interior of the test kit (300) is provided at the lower part of the enclosure or at the joint of the bottom plate (7) and the enclosure (5). The test device in the present invention can effectively prevent a liquid sample from spilling or splashing out of the sample storage chamber (6) in the process that the sample is squeezed into the test kit (6) from the sample collector, and the test kit (300) has a compact and small structure, and is very easy to carry, meeting on-site testing requirements for rapid sampling and point-of-care testing.