Sensor Chip Surplus Blood Reservoir for Hygiene
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Solution Overview
Problem
Conventional blood glucose measurement devices require users to carry and handle tissues or cotton balls to wipe away surplus blood, posing hygiene and safety concerns.
Innovation Solution
A sensor chip with a flat substrate, sample inlet, supply path, detection electrodes, and a surplus blood reservoir that captures and holds extra blood, eliminating the need for external wiping materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users squeeze out extra blood to prevent measurement failure, then measurement reliability is improved, but hygiene and safety deteriorate due to surplus blood remaining on skin
Solution Approach 1:
The patent extracts the surplus blood from the skin surface by providing a reservoir that draws out and contains the excess blood that would otherwise remain on the user's skin after measurement, thereby resolving the hygiene and safety issue while maintaining measurement reliability
2Object-affected harmful factors
If users carry tissues or cotton balls to wipe away surplus blood, then hygiene and safety are improved, but device complexity and user burden increase
Solution Approach 1:
The patent merges the surplus blood management function directly into the sensor chip by integrating a reservoir and drawing mechanism, eliminating the need for separate wiping materials and simplifying the overall system while maintaining hygiene and safety
3Object-affected harmful factors
If a surplus blood reservoir is added to the sensor chip, then hygiene and safety are improved by containing surplus blood, but device complexity increases
Solution Approach 1:
The patent implements the surplus blood reservoir as a nested structure within the sensor chip assembly, where the reservoir is integrated into the existing chip architecture rather than adding external components, thereby minimizing the increase in device complexity while effectively containing surplus blood
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 sensor chip efficiently manages surplus blood internally, enhancing user safety and hygiene by eliminating the need for external wiping materials and allowing for easy disposal of the used chip.
Implementation Method 1
A surplus blood reservoir 25 is provided to the substrate 15, and extra blood not used for analysis is drawn and held therein
Data Source
AI summary
This sensor chip (11) comprises a substrate (15) in the form of a flat board, a sample inlet (20) that is provided in the thickness direction of the substrate (15) and into which flows the blood (3) used for measurement, a supply path (21) that communicates with this sample inlet (20), and detection electrodes (17, 18, 19) provided to this supply path (21), wherein the substrate (15) is provided with a surplus blood reservoir (25) that draws in surplus blood (3a) and holds this drawn surplus blood (3a).