Integrated Blood Collection Structure for Microliter Testing
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Solution Overview
Problem
Existing blood collection and testing devices are separate structures, requiring high operation complexity, leading to potential contamination and operator exposure, and are not portable.
Innovation Solution
An integrated blood collection and testing device with a collection rod, capillary channel, and testing chamber, featuring a barb and annular gasket for sealing, allowing for one-step collection, mixing with buffer solution, and testing in a compact, portable format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate structures are used for blood collection and testing, then each component can be optimized independently, but the operation complexity increases and contamination risk rises
Solution Approach 1:
The patent combines the blood collection needle assembly and testing device into a single integrated structure. The collection needle is directly connected to the testing chamber through a sealed connection, eliminating the need for separate handling of collection and testing components. This integration ensures that the blood sample flows directly from collection to testing without external intervention, preventing contamination while simplifying operation to a single insertion action.
Solution Approach 2:
The integrated device performs multiple functions through a single structure: blood collection, sample transfer, and testing. The collection needle assembly serves both as a sampling tool and as a sealed conduit for sample delivery, while the testing chamber simultaneously receives and processes the sample. This multi-functionality reduces the number of separate components and operations required.
2Reliability
If separate structures are used for blood collection and testing, then each component can be optimized independently, but operator exposure to blood increases
Solution Approach 1:
The patent integrates the collection needle and testing device into a single sealed unit, eliminating the need for operators to handle separate collection and testing components. The sealed connection between the collection needle and testing chamber prevents blood exposure during transfer, protecting operators while maintaining a manageable structural design.
Solution Approach 2:
The integrated sealed connection structure acts as an intermediary that safely transfers the blood sample from the collection needle to the testing chamber without requiring operator intervention. This intermediary mechanism prevents direct contact with blood while maintaining a relatively simple overall device structure.
3Ease of operation
If traditional testing devices are used, then sample collection is straightforward, but the device volume is too large for portable use
Solution Approach 1:
The patent combines the blood collection needle and testing device into a single compact integrated unit. The collection needle is directly connected to a small testing chamber, eliminating the need for separate collection containers and transfer mechanisms. This integration dramatically reduces device volume while maintaining ease of use through a simple one-step insertion operation.
Solution Approach 2:
The collection needle is nested within or directly connected to the testing chamber structure, with the sample flow path integrated into the device body. This nesting arrangement minimizes the overall device volume by eliminating external connections and separate components, making the device portable while maintaining operational simplicity.
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 integrated device simplifies operations, reduces operator exposure, ensures safety, and optimizes sample volume from milliliters to microliters, enhancing testing success and portability.
Implementation Method 1
a capillary channel is arranged inside the collection rod, the bottom end of the capillary channel is located at the tail end of the collection rod, and the top end of the capillary channel is located at the middle-upper part of the collection rod
Data Source
AI summary
The present invention relates to a whole blood and fingertip blood testing device, including a blood collection structure and a testing chamber connected to and in fluid communication with the blood collection structure. The blood collection structure includes a collection rod, a capillary channel is arranged inside the collection rod, the bottom end of the capillary channel is located at the tail end of the collection rod, and the top end of the capillary channel is located in the middle of the capillary channel; and the collection rod is provided with a communicating hole connected to and communicated with the top end of the capillary channel. Moreover, the present invention also provides a method for collecting and testing a blood sample by using the testing device. Through the integrated structure of the blood collection structure, the testing chamber and the buffer chamber, the whole blood and fingertip blood testing device and method achieve functions of collecting, slowly releasing and testing the blood sample. The operation is easy, which reduces the difficulty of use by the operator. The number of times and time that the operator contacts the sample are effectively reduced, and the infectious possibility of the operator is reduced, so that the testing device is suitable for HIV testing, novel coronavirus testing, etc. The testing device and method have low requirements on the collected amount of the sample, and the collected amount is optimized from the milliliter level to the microliter level.