Physiological Sensor Pad With Pique Textures For Adhesion
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Solution Overview
Problem
Conventional physiological signal monitoring devices face challenges in maintaining air permeability and connecting strength between the base and the skin surface, leading to discomfort and premature device detachment due to moisture accumulation and decreased adhesion.
Innovation Solution
A physiological signal monitoring device with a base, sensor, transmitter, adhesive layer, and pad, where the adhesive layer is partially applied to the base and includes a coupling layer with second holes and piques for enhanced adhesion and air permeability, and a method involving adhesive-layer attaching, pad attaching, hot-pressing, and assembling steps to secure the pad to the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pad is designed with through holes for air permeability, then air flow between the base and skin surface is improved, but moisture accumulates in the through holes and adhesion strength decreases
Solution Approach 1:
The pad is designed with a porous structure containing multiple through holes that extend from the skin surface to the coupling surface, enabling continuous air flow between the base and skin surface while maintaining adhesion strength through the porous matrix structure
Solution Approach 2:
The pad combines porous material with adhesive material to create a composite structure that simultaneously provides air permeability through the porous network and strong adhesion through the adhesive components, preventing moisture accumulation by allowing vapor transmission
2Strength
If the adhesive layer is applied extensively to ensure strong connection, then connecting strength between pad and base is improved, but air permeability and moisture dissipation are reduced
Solution Approach 1:
The adhesive layer is strategically positioned in specific regions of the pad rather than uniformly distributed, with higher adhesive concentration at edges and corners for strong connection while leaving central porous regions open for air flow and moisture dissipation
Solution Approach 2:
The adhesive layer is segmented into multiple discrete regions or patterns rather than a continuous film, allowing air to pass through gaps between adhesive segments while maintaining sufficient connection strength at designated adhesive locations
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 solution maintains a balance between retaining force and air permeability, preventing premature detachment and ensuring long-term adhesion, as demonstrated by increased tensile force and adhesion retention over time.
Implementation Method 1
at least part of the adhesive layer soaks the pad through the plurality of second holes of the coupling backing and at least partially wraps at least one of the plurality of second threads and the plurality of first threads
Implementation Method 2
the plurality of piques are arranged on the coupling surface to form convex and concave three-dimensional textures on the coupling surface
Data Source
AI summary
A physiological signal monitoring device includes a base, a sensor, a transmitter, an adhesive layer and a pad. The sensor is carried by the base. The transmitter is coupled to the sensor. The adhesive layer is arranged on a bottom surface of the base. The pad includes an adhesive backing and a coupling backing. The adhesive backing is fabricated by weaving first threads and includes first holes. The coupling backing provides a coupling surface, and is fabricated by weaving second threads and includes second holes and piques. The piques are arranged on the coupling surface to form convex and concave three-dimensional textures on the coupling surface. The adhesive layer soaks the pad through the second holes and wraps at least one of the second threads and the first threads, so as to make the pad be connected to the base through the adhesive layer.