Automatic Analysis Device Light Source Detector Placement
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Solution Overview
Problem
Existing automatic analysis apparatuses for blood coagulation measurement face complexity and high costs due to the need for multiple detectors to check light source quantities, and methods that project light from the side of reaction containers fail to measure whole agglutination reactions uniformly, leading to uneven blood coagulation measurements.
Innovation Solution
An automatic analysis apparatus with a detector for checking light source quantities installed at the bottom of the reaction container installation section, allowing for a single detector to be used across multiple light sources, reducing apparatus complexity and enabling accurate measurement of whole agglutination reactions by positioning the light source at the bottom of the reaction container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detector is installed for each light source to check light quantity, then light quantity confirmation accuracy is improved, but apparatus complexity and cost increase
Solution Approach 1:
A single detector is designed to check light quantity for multiple light sources sequentially. The detector moves to different positions corresponding to each light source to perform detection, eliminating the need for separate detectors for each light source while maintaining detection accuracy.
Solution Approach 2:
The functions of multiple detectors (one for each light source) are merged into a single detector that can detect light from multiple sources by moving to different detection positions. This consolidation reduces the number of components and simplifies the apparatus structure.
2Device complexity
If light is projected from the side of reaction containers, then apparatus configuration is simplified, but measurement uniformity deteriorates
Solution Approach 1:
Instead of projecting light from the side of the reaction container, the light source is inverted to project light from the bottom of the container. This inversion allows light to pass through the entire reaction liquid volume, enabling uniform measurement of whole agglutination reactions and improving measurement consistency.
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 configuration eliminates the need for multiple detectors, reduces variation between measurement points, and provides highly accurate blood coagulation measurements by ensuring consistent light source intensity, resulting in a cost-effective and reliable analysis apparatus.
Implementation Method 1
a light source (124) which projects light towards a reaction container (106) to be installed; and a detector (125) which detects light from the light source (124) having been transmitted through the reaction liquid in the reaction container (106)
Implementation Method 2
In an automatic analysis apparatus that measures on the basis of scattered light quantity change caused by blood coagulation and the like
Data Source
Figure 1
Figure 2~3
AI summary
A configuration of detecting light from the front face of a light source is the best for confirming the variation of a light quantity, but when a plurality of light sources are present, as many detectors for checking a light quantity as the light sources are necessary and the apparatus configuration becomes complex. In the present invention, a detector 130 for checking a light source light quantity is installed in a reaction container transfer mechanism 117 used commonly for a plurality of detection sections, and the light quantities of light sources 124 are checked with the detector 130.