Adhesive Biosignal Electrode Surface Contact
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Solution Overview
Problem
Conventional electrodes for biosignal measurement are prone to unstable connections due to point contact and require protrusions and sockets, which hinder miniaturization and accurate signal transmission, and often necessitate frequent replacements.
Innovation Solution
The electrode features a sheet member with conductive and adhesive device and body contact portions forming a surface contact, eliminating the need for protrusions and sockets, allowing for stable, miniaturized, and multi-electrode configurations on a single pad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrodes use protrusions and sockets for connection, then electrical connection can be established, but device complexity increases and miniaturization is hindered
Solution Approach 1:
The invention extracts and eliminates the protrusion and socket components from the electrode structure. Instead of using these separate mechanical connection elements, the patent employs a flat board contact portion that directly contacts the terminal through surface contact, thereby removing unnecessary structural complexity while maintaining reliable electrical connection.
Solution Approach 2:
The invention merges the electrical connection function with the electrode body itself. The flat board contact portion is integrated into the electrode structure, combining the functions of electrical contact and structural support into a single unified component, eliminating the need for separate protrusions and sockets.
2Device complexity
If conventional electrodes use point contact between metal electrode and socket, then electrical connection is possible, but connection stability deteriorates and signal transmission accuracy decreases
Solution Approach 1:
The invention transitions from point contact (zero-dimensional contact area) to surface contact (two-dimensional contact area). The flat board contact portion provides a extended contact surface that interfaces with the terminal over an area rather than at a single point, dramatically improving connection stability and signal transmission reliability.
3Reliability
If conventional electrodes are designed with protrusions, then electrical connection can be made, but device miniaturization is prevented
Solution Approach 1:
The invention removes the protrusion component entirely from the electrode design. By eliminating this volume-consuming structural element and replacing it with a flat board contact portion that lies flush with the electrode surface, the overall electrode volume is reduced, enabling miniaturization of the biosignal measurement device.
4Reliability
If conventional electrodes require frequent replacements due to unstable connection, then connection issues are addressed, but measurement time is lost and productivity decreases
Solution Approach 1:
The invention incorporates a flat board contact portion with extended surface area that provides inherent connection stability before measurement begins. This design cushioning prevents connection instability and the need for frequent replacements, ensuring continuous reliable operation and maximizing measurement productivity.
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 design enhances signal-to-noise ratio, reduces motion artifacts, and facilitates easy attachment and replacement, enabling more accurate and reliable biosignal measurement while allowing for miniaturization of the device.
Implementation Method 1
an electrode member which is provided on the top and bottom surface of the sheet member via the hole and includes a device contact portion which makes surface contact with a terminal of a biosignal measurement device on the top surface of the sheet member, and a body contact portion which makes contact with the skin on the bottom surface of the sheet member
Implementation Method 2
an adhesive material is formed on the bottom of the adhesive sheet 20. Accordingly, the electrode 10 may be closely attached onto the skin of a body
Data Source
AI summary
A biosignal measurement device includes an electrode and a signal processing member. The electrode includes an insulation sheet having a hole, a device contact portion provided on the top surface of the insulation sheet and a body contact portion provided on the bottom surface of the insulation sheet, the device contact portion and the body contact portion electrically connected to each other via the hole. The signal processing member includes an externally exposed terminal to make surface contact with the device contact portion, an analog signal processing unit, an A/D signal converter and a digital signal processing unit. Also, the device contact portion and the body contact portion are formed of a material which is both conductive and adhesive. Accordingly, the signal processing member may be directly attached. Noise may be reduced. Also, a biosignal may be accurately measured.