Blood Analysis Cartridge Assembly With Detachable QC and Sealed Sampling
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Solution Overview
Problem
Conventional blood analysis devices are large and complex, limiting their use to specific laboratories, require frequent reagent and sensor replacements, and are susceptible to foreign substance intrusion through the specimen supply part, affecting test results and device functionality.
Innovation Solution
A cartridge assembly for blood analysis featuring a main cartridge with reagent solution bags and a detachable sub-cartridge for quality control solution, equipped with a rotatable opening/closing door and a specimen supply part to prevent foreign substance penetration, allowing easy coupling and separation, and including a handle for improved handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a POCT type blood analysis device is developed to improve mobility and miniaturize the device, then the device can be used on-site rather than in a laboratory, but foreign substances may penetrate into the specimen supply part and affect the sensor card
Solution Approach 1:
The opening/closing door is designed to be opened in advance before specimen insertion, allowing the needle to protrude outward. This preliminary action ensures that the specimen supply path is established before testing begins, preventing foreign substances from entering during the testing process while maintaining the miniaturized structure needed for mobility.
Solution Approach 2:
The cartridge assembly is designed as a disposable component that is replaced after each use. This eliminates the need for complex cleaning and sterilization procedures, ensuring that no foreign substances contaminate the specimen supply part between uses, while keeping the device structure simple and portable.
2Measurement precision
If conventional blood analysis devices are used with complex mechanical structures, then measurement accuracy is maintained, but the devices are large in structure and limited to specific laboratories
Solution Approach 1:
The blood analysis device is segmented into a main body and a detachable cartridge assembly. The cartridge assembly contains all necessary components (needle, reagent, sensor card) in a compact, integrated unit. This segmentation allows the main body to remain small and portable while maintaining measurement precision through the specialized cartridge design.
Solution Approach 2:
The cartridge assembly is inserted into the accommodation space within the main body, with the needle protruding outward when the opening/closing door is opened. This nested structure minimizes the overall device volume while maintaining all necessary functional components for accurate blood analysis.
3Measurement precision
If conventional blood analysis devices require periodic replacement of reagents and sensors, then measurement accuracy is maintained, but maintenance becomes cumbersome
Solution Approach 1:
The reagent and sensor card are merged into a single integrated cartridge assembly. This allows both components to be replaced simultaneously as one unit, eliminating the need for separate maintenance operations and reducing maintenance complexity while ensuring both reagent and sensor freshness for accurate measurements.
Solution Approach 2:
The cartridge assembly is designed as a disposable component that is replaced after each use, eliminating the need for periodic maintenance of reagents and sensors. This ensures measurement precision through fresh components while making maintenance as simple as replacing one cartridge.
4Adaptability or versatility
If a sub-cartridge including quality control solution is mounted, then quality control functionality is added, but the outer shape of the device changes
Solution Approach 1:
The sub-cartridge containing the quality control solution is nested within the main cartridge assembly. When mounted, it fits into the accommodation space without protruding beyond the outer contours of the cartridge. This allows quality control functionality to be added while maintaining a consistent outer shape for easy handling and storage.
Data Source
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AI summary
A cartridge assembly for blood analysis according to one aspect of the present disclosure includes a main cartridge including a main case having a sub-cartridge accommodation groove formed on one surface thereof, a plurality of reagent solution bags disposed inside the main case, a specimen supply part disposed inside the main case, and an opening/closing door which is elastically and rotatably coupled to another surface facing the one surface, a sub-cartridge which is inserted into the sub-cartridge accommodation groove so as to be detachable from the main cartridge and includes a sub-case and a plurality of quality control solution bags disposed inside the sub-case, and a sensor card detachably coupled to the main cartridge.