Invasive Multi-Electrode Sensor with Spirally Wound Wire Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrochemical sensors are non-invasive and cannot be used for continuous monitoring of biological/physiological parameters, and they have high production costs.
Innovation Solution
A low-cost invasive multi-electrode electrochemical sensor with spirally wound wire electrodes, where each wire electrode has an electrically conductive core and an insulating sheath, with the proximal and distal ends of the core exposed, and the invasion sections of the electrodes are wound around each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing electrochemical test strips are used, then non-invasive detection is achieved, but continuous monitoring of biological/physiological parameters cannot be performed
Solution Approach 1:
The sensor is divided into distinct functional sections: a substrate section for stable mounting on the substrate and an invasion section for penetrating biological tissues. Each wire electrode has its own substrate section and invasion section, allowing the sensor to simultaneously maintain structural stability and achieve invasive detection capability for continuous monitoring
Solution Approach 2:
Multiple wire electrodes are wound around each other in a spiral manner, with each electrode nested within the configuration of the others. This nested arrangement allows the invasion sections to be compact while maintaining their invasive functionality, enabling continuous monitoring without requiring large device size
2Adaptability or versatility
If invasive detection is implemented, then continuous monitoring capability is achieved, but production cost increases
Solution Approach 1:
Multiple wire electrodes with identical structures (electrically conductive core + insulating sheath) are used throughout the sensor. This homogeneous design allows for standardized manufacturing processes and bulk production, reducing per-unit costs while achieving continuous monitoring capability through the multi-electrode configuration
Solution Approach 2:
The sensor is designed as a disposable device with a simple structure that can be mass-produced at low cost. The wire electrodes and substrate are configured to enable invasive detection without requiring complex or expensive materials, making the sensor economically viable as a single-use product for continuous monitoring applications
3Measurement precision
If multiple wire electrodes are used, then detection sensitivity is improved, but device size increases
Solution Approach 1:
The wire electrodes are configured in a spiral arrangement where invasion sections are wound around each other. This curved, compact configuration allows multiple electrodes to occupy minimal space while maintaining their individual detection functions, achieving high detection sensitivity without increasing device size
Solution Approach 2:
Instead of arranging multiple electrodes linearly or parallelly which would increase device volume, the electrodes are arranged in a three-dimensional spiral configuration. This dimensional reorganization packs multiple electrodes into a compact volume, maintaining detection sensitivity while minimizing device size
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 achieves invasive detection with high sensitivity and accuracy, while being disposable, small in size, and cost-effective, addressing the limitations of existing technologies.
Implementation Method 1
an invasive multi-electrode electrochemical sensor... Each wire electrode includes an electrically conductive core... The electrically conductive core in the invasion section of at least one of the wire electrodes is different in material from the electrically conductive cores of the other wire electrodes
Data Source
AI summary
An invasive multi-electrode electrochemical sensor includes a substrate and plural wire electrodes. Each wire electrode includes an electrically conductive core and an insulating sheath that substantially covers, but exposes a proximal end and a distal end of, the electrically conductive core. Each wire electrode has a substrate section provided on the substrate and an invasion section extending outward from an edge of the substrate. The proximal end and distal end of the electrically conductive core of each wire electrode are located at the substrate section and invasion section of the wire electrode respectively. The invasion sections are at least partially wound around one another spirally. The electrically conductive core in the invasion section of at least one of the wire electrodes is different in material from the electrically conductive cores of the other wire electrodes.