Analysis Panel Injection Port Recessed Section Design
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Solution Overview
Problem
Conventional analyzers face issues with sample liquid shortage and contamination due to the absorption of sample liquid by the absorbing member, leading to measurement inaccuracies and safety concerns when the sample liquid adheres around the injection port during analysis.
Innovation Solution
The panel for analysis features a recessed section around the injection port to collect sample liquid using centrifugal force, preventing it from being discharged outward and reducing contamination risks by using a cover to contain the sample liquid during analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an absorbing member is provided on the disk to absorb sample liquid adhered around the injection port, then sample liquid dispersal is prevented, but the sample liquid injected into the cavity is also absorbed causing shortage
Solution Approach 1:
The invention divides the disk structure into two separate functional components: a disk body with the injection port and cavity, and a separate cover with the absorbing member. This segmentation allows the absorbing member to be positioned only at the injection port area on the cover, so it absorbs excess sample liquid adhering to the outer surface while leaving the sample liquid inside the cavity undisturbed. The sample liquid injection port is formed on the disk body, and the cover is attached to close the injection port, with the absorbing member positioned to absorb only external adhered liquid.
2Reliability
If the absorbing member absorbs sample liquid adhered around the injection port, then measurement safety is improved, but contamination risk increases due to repeated contact
Solution Approach 1:
The invention makes the cover a disposable component that is attached to the disk body only once for each sample analysis. The cover includes the absorbing member that contacts the sample liquid adhered around the injection port. After use, the entire cover is discarded, eliminating the need to clean or replace the absorbing member repeatedly. This disposable approach prevents contamination accumulation while maintaining measurement safety, as each new cover provides a fresh absorbing member that has not been exposed to previous samples.
3Ease of operation
If the injection port is formed on the end face of the panel to facilitate injection, then ease of operation is improved, but sample liquid adheres around the injection port causing measurement issues
Solution Approach 1:
The invention introduces the cover as an intermediary component between the injection port and the external environment. The cover includes an absorbing member that acts as a mediator to capture and retain sample liquid that adheres to the outer surface around the injection port during the injection process. This allows the injection port to remain accessible on the end face for easy sample application, while the absorbing member on the cover prevents the adhered sample liquid from causing measurement errors or dispersing during disk rotation.
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
This design ensures reliable transfer and collection of the sample liquid, preventing shortages and contamination, thus enhancing measurement accuracy and safety by containing the sample liquid within the analysis chamber.
Implementation Method 1
a recessed section which collects a sample liquid adhered around the injection port using a centrifugal force generated by rotating the holding member for the panel for analysis
Implementation Method 2
the sample liquid is transferred by capillary force into the cavity 208 communicating with the injection port 214
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Provided is a panel (3) for analysis having a chamber inside for transferring a sample liquid dispensed as a drop on an injection port (14). The injection port (14) is formed to protrude in a direction away from the chamber, a recessed section (12) is formed around the injection port (14), and the injection port (14) is arranged on the side of a rotating axis center (11) of a holding member (101) for the panel for analysis in an analyzer. Thus, even when a sample liquid is adhered around the injection port, contamination and shortage of the sample liquid can be prevented.