Biosensor Inflow-Restricting Holes for Sample Liquid Control
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Solution Overview
Problem
Existing biosensors experience variation in measurement results due to the method of spotting sample liquid, leading to inconsistent capillary action and inaccurate detection.
Innovation Solution
Incorporating inflow-restricting holes on both sides of the supply path to suppress capillary action, ensuring the sample liquid enters the biosensor in a horizontal state, thereby stabilizing the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an opening is provided for sample liquid introduction, then the sample liquid can be easily introduced into the supply path, but the measurement result varies depending on the way of spotting the sample liquid
Solution Approach 1:
The patent applies local quality by providing inflow-restricting parts at specific locations (both sides of the supply path) rather than uniformly across the entire structure. These localized restrictions create different flow control characteristics in different regions, suppressing capillary action at the sides while allowing it to proceed normally in the center, thereby resolving the contradiction between ease of operation and measurement precision
Solution Approach 2:
The patent changes the physical parameters of the supply path by introducing inflow-restricting parts that modify the capillary action characteristics. By altering the width, depth, or surface properties of the supply path at specific locations, the patent controls the flow behavior of the sample liquid to enter horizontally, ensuring consistent measurement results regardless of spotting method
2Productivity
If capillary action is promoted for smooth sample liquid flow, then the sample liquid reaches the reagent part reliably, but the flow pattern becomes inconsistent leading to measurement variation
Solution Approach 1:
The patent applies local quality by creating different capillary action characteristics in different regions of the supply path. The inflow-restricting parts on both sides locally suppress capillary action, while the central region maintains normal capillary flow. This localized differentiation ensures that the sample liquid flows efficiently to the reagent part while maintaining a consistent horizontal flow pattern for reliable measurement
Solution Approach 2:
The patent applies preliminary anti-action by introducing inflow-restricting parts that preemptively counteract excessive or inconsistent capillary action at the sides of the supply path. These restrictions prevent the sample liquid from entering too quickly or in an inconsistent manner, thereby ensuring that the flow reaches the reagent part reliably but in a controlled and consistent horizontal pattern
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 significantly reduces measurement variability by controlling the entry of the sample liquid, ensuring it reaches the reagent part consistently, leading to more reliable and accurate biological information measurement.
Implementation Method 1
the portions on both sides of the supply path go ahead, a capillary action is significantly suppressed in this portion
Data Source
AI summary
Electrodes (A, B) are provided in at least one of plate-like members corresponding to an inner side direction of supply path from an opening of supply path. Electrode (C) of a biological sample is provided in the inner side direction from electrodes (A, B) Reagent part is provided so as to cover electrodes (A, B) and electrode (C). Inflow restricting hole of a sample liquid is provided in at least one of plate-like members corresponding to the portions on both sides of supply path closer to the opening side than the electrode.