Elastic Mounting Board Folded Back Structure for Biomedical Signal Stability

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Solution Overview

Problem

Elastic electrode sheets used for biological signal amplification face issues where the amplifier detaches during expansion and contraction, leading to changes in signal amplification characteristics and potential damage.

Innovation Solution

An elastic mounting board design featuring a first elastic substrate with elastic wiring and an electrode, where the mounting portion of the functional component is folded back to secure it to the first main surface, preventing detachment during expansion and contraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the electrode sheet is made elastic to allow expansion and contraction during attachment to a living body, then the comfort and adaptability improve, but the functional component (amplifier) may detach and signal characteristics may change

Engineering Contradiction:

Improveelasticity for living body attachmentVSAvoidfunctional component attachment stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The electrode sheet is divided into a first elastic substrate and a second substrate with different elasticity. The first substrate provides overall elasticity for body attachment, while the second substrate maintains rigidity to secure the functional component, preventing detachment during expansion and contraction.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the electrode sheet have different elastic properties. The first elastic substrate has high elasticity for comfort and adaptability, while the second substrate has lower elasticity to maintain structural stability and prevent component detachment during use.

Inventive Principle:

Principle #3Local quality

2Reliability

If the elasticity of the mounting portion is reduced to prevent component detachment, then the reliability improves, but the overall elasticity and comfort during expansion and contraction deteriorates

Engineering Contradiction:

Improvefunctional component attachment stabilityVSAvoidoverall sheet elasticity

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The electrode sheet is segmented into regions with different elastic properties. The first elastic substrate provides overall elasticity for comfort, while the second substrate with reduced elasticity specifically secures the functional component, resolving the contradiction between overall flexibility and local stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mounting portion has locally reduced elasticity compared to other regions, providing stable component attachment while the rest of the sheet maintains high elasticity for adaptability and comfort during expansion and contraction.

Inventive Principle:

Principle #3Local quality

3Ease of manufacture

If the functional component is mounted on a flat substrate, then the manufacturing simplicity is maintained, but the component may come off during significant expansion and contraction

Engineering Contradiction:

Improvemounting board structureVSAvoidcomponent retention during deformation

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The second substrate is folded back in the thickness direction to create a three-dimensional structure. This folding provides mechanical retention of the functional component through overlapping layers, preventing detachment during expansion and contraction while maintaining manufacturing simplicity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The second substrate is folded back and positioned beneath the first substrate, creating a nested structure where the functional component is secured between layers. This provides reliable component retention through multi-layer mechanical support.

Inventive Principle:

Principle #7Nested doll (Nesting)

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 design effectively prevents the functional component from coming off during expansion and contraction, maintaining signal amplification characteristics and preventing damage, while allowing for easy attachment to a living body.

Implementation Method 1

a first elastic substrate; an elastic wiring on a first main surface of the first elastic substrate

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11602045B2Elastic mounting board

Publication Date: 2023.03.07 MURATA MFG CO LTD

AI summary

An elastic mounting board that includes: a first elastic substrate; an elastic wiring on a first main surface of the first elastic substrate; an electrode electrically connected to the elastic wiring; and a functional component mounted in a mounting portion of the first elastic substrate and electrically connected to the elastic wiring, in which the mounting portion having the functional component is folded back such that the functional component will face a first main surface side of the elastic mounting board and the electrode will face a second main surface side of the elastic mounting board.