Biometric Sensor With Variable-Length Needles for Multi-Depth Bio-Marker Detection
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Solution Overview
Problem
Existing methods for detecting biometric information, such as bio-markers, are invasive and painful, and struggle with accurate analysis of concentration changes in biological analytes, particularly when repeated blood collection is required.
Innovation Solution
A biometric information measuring sensor with a base having multiple bio-marker measuring areas and electrodes, equipped with needles of varying lengths, which are inserted into the specimen to detect bio-markers, utilizing enzymes to convert bio-marker presence into electric signals for concentration measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If repeated blood collection is performed to measure bio-marker concentrations, then measurement data can be obtained, but pain increases and measurement accuracy decreases
Solution Approach 1:
The sensor divides the measurement function into multiple independent needle units with different lengths, each targeting specific tissue depths. This segmentation allows simultaneous measurement at multiple locations without requiring repeated invasive procedures, thereby maintaining measurement accuracy while reducing overall pain through distributed, minimal interventions.
Solution Approach 2:
The invention transitions from a single-point blood collection method to a multi-depth tissue measurement approach. By measuring bio-markers at different tissue depths (epidermis, dermis, subcutaneous tissue) simultaneously using needles of varying lengths, the system obtains comprehensive concentration data without repeated punctures, improving accuracy while minimizing pain through dimensional diversification of measurement points.
2Measurement precision
If single-length needles are used for bio-marker detection, then device structure is simple, but measurement accuracy across different tissue depths is insufficient
Solution Approach 1:
Each needle in the array is designed with a specific length optimized for reaching particular tissue depths (epidermis, dermis, or subcutaneous tissue). This local quality differentiation ensures that each measurement point targets the appropriate tissue layer for accurate bio-marker detection, while the modular needle design keeps individual component complexity low.
Solution Approach 2:
The invention varies the length parameter of needles within the array to optimize penetration depth for different tissue layers. By changing this single geometric parameter while maintaining consistent needle structure and material properties, the system achieves multi-depth measurement capability without significantly increasing overall device complexity.
3Productivity
If multiple electrodes are used for simultaneous bio-marker measurement, then measurement efficiency increases, but device complexity increases
Solution Approach 1:
Each electrode assembly serves multiple functions: it acts as both a measurement electrode and a structural support for the needle array. The electrodes are designed to perform electrochemical detection while also providing the framework for positioning multiple needles, thereby increasing measurement efficiency without proportionally increasing overall device complexity through functional integration.
Solution Approach 2:
The invention merges the electrode structure with the needle support framework into a unified assembly. Multiple electrodes are arranged in an array that simultaneously supports multiple needles, combining the measurement function with the structural function. This merging allows simultaneous multi-point measurement while keeping the device structure compact and manageable.
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
Enables non-invasive, accurate measurement of bio-marker concentrations by differentiating needle lengths for precise detection across various bio-marker locations, reducing pain and improving analysis accuracy.
Implementation Method 1
utilizing enzymes to convert bio-marker presence into electric signals for concentration measurement
Data Source
AI summary
A biometric information measuring sensor is provided that includes a base comprising a plurality of bio-marker measuring areas and a plurality of electrodes. Each of the plurality of electrodes is disposed on a respective one of the plurality of bio-marker measuring areas, and each of the plurality of electrodes includes a working electrode and a counter electrode spaced apart from the working electrode. The biometric information measuring sensor also includes a plurality of needles. Each of the needles is disposed on a respective one of the plurality of electrodes. Two or more of the plurality of needles have different lengths.