Blood Analysis Apparatus Specimen Sufficiency Detection
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Solution Overview
Problem
Existing blood analysis apparatuses face challenges in determining whether the amount of blood specimen sucked into the sampling nozzle is sufficient, leading to potential incorrect diagnoses due to insufficient specimen-sucking, which is difficult to detect without additional sensors and complex control circuits.
Innovation Solution
The apparatus calculates the ratio or number of blood cells from count data obtained in each chamber to determine if the specimen amount is normal or insufficient, utilizing existing count data without the need for additional hardware or sensors, by comparing results across multiple blood cell counting parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional sensors and complex control circuits are added to detect specimen sufficiency, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The system uses its existing blood cell counting functionality to automatically detect specimen sufficiency. The control unit analyzes count data from multiple chambers that are already being used for blood cell analysis, and determines specimen sufficiency without requiring external detection mechanisms. This self-service approach eliminates the need for additional sensors and control circuits while maintaining detection accuracy.
2Measurement precision
If additional sensors are added to detect specimen sufficiency, then detection accuracy improves, but manufacturing cost increases
Solution Approach 1:
The system leverages existing hardware components (chambers, blood cell counting devices) to perform dual functions: both blood cell analysis and specimen sufficiency detection. By reusing existing count data from multiple chambers for sufficiency determination, the system avoids additional manufacturing costs while achieving accurate detection.
3Device complexity
If specimen amount is not monitored, then device simplicity is maintained, but diagnostic reliability decreases
Solution Approach 1:
The control unit continuously monitors blood cell count data from multiple chambers and uses this feedback to determine specimen sufficiency. When the count data indicates insufficient specimen amount, the system can identify and flag potential diagnostic errors. This feedback mechanism maintains device simplicity while significantly improving diagnostic reliability through automatic monitoring and error detection.
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 method allows for accurate determination of specimen sufficiency without increasing the apparatus's complexity or cost, enhancing diagnostic reliability by using existing count data from multiple chambers to ensure the specimen amount is within a predetermined range.
Implementation Method 1
a sampling nozzle (a long and thin pipe which is also called a 'needle') 2 moves to suck the blood specimen in the specimen container 1
Implementation Method 2
an impedance method utilizing changes in the electrical characteristics
Implementation Method 3
flow cytometry which is an optical technique
Implementation Method 4
a light-focused flow impedance method which is a combination of the aforementioned impedance method and the flow cytometry
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A blood analysis apparatus configured such that a nozzle 2 sucks a predetermined amount of a blood specimen in a specimen container 1, and dispenses the specimen to each blood cell counting part (31 - 34), each blood cell counting part obtains each count data, and a control part processes each count data to perform blood analysis. In this apparatus, two or more blood cell counting parts (BASO chamber 31 of basophil counting part, LMNE chamber 32 of LMNE counting part, RBC chamber 33 of red blood cell counting part, WBC chamber 34 of white blood cell counting part in Fig. 1 ) are constituted to obtain the count data of the same particular blood cell (white blood cell in Fig. 1 ), and the control part calculates the ratio or number of the existing blood cell from each count data, and judges whether the amount of the blood specimen sucked in the nozzle is normal or insufficient by comparing respective calculation results to determine whether they are within the predetermined allowable ranges.