Thin Film Nasal Dilator with Breathable Polyurethane Layer
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Solution Overview
Problem
Nasal dilators with low moisture vapor transmission rates (MVTR) materials, such as polyolefin films, cause moisture buildup, leading to adhesion loss and discomfort due to itchy feelings, as they have low MVTR, which results in poor adhesion and user discomfort.
Innovation Solution
A nasal dilator design featuring a breathable adhesive-coated high MVTR layer, such as polyurethane film, combined with high modulus spring elements made of thermoplastic polymers like polyester, which provide the necessary spring force to open nasal passages and are attached to a carrier delivery system with a separation line for easy application, ensuring the adhesive-coated layer is properly supported and maintains adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polyolefin film is used as the backing material, then the nasal dilator provides sufficient structural support and spring force, but moisture vapor transmission is blocked causing moisture buildup and adhesion loss
Solution Approach 1:
The patent changes the material parameter from polyolefin to polyurethane, which fundamentally alters the moisture vapor transmission property while maintaining the required structural support and spring force capabilities for nasal dilator function
Solution Approach 2:
The patent uses a composite structure combining polyurethane film with adhesive layers and spring elements, creating a multi-functional material system that simultaneously provides breathability, adhesion, and mechanical spring force
2Object-affected harmful factors
If adhesive-coated breathable nonwovens are used, then moisture vapor transmission is improved, but the material lacks sufficient spring force for effective nasal dilation
Solution Approach 1:
The patent merges two previously separate functions into a single polyurethane film material: the breathable backing layer provides both the required moisture vapor transmission and the structural support for spring force, eliminating the need for separate materials
Solution Approach 2:
The patent changes the material properties of polyurethane film to achieve optimal balance between breathability and mechanical strength, selecting specific polyurethane formulations that provide both high moisture vapor transmission and sufficient elasticity for spring force
3Force
If thick polyester strips are used for spring force, then sufficient dilation force is achieved, but the device becomes bulky and adhesive coverage is reduced
Solution Approach 1:
The patent replaces thick polyester strips with thin polyurethane film that has elastic properties, creating a flexible thin-film structure that provides spring force through material elasticity rather than thick structural elements, thereby maximizing adhesive coverage area
Solution Approach 2:
The patent changes the dimensional parameters of the spring element from thick strips to thin film with optimized elastic modulus, achieving sufficient spring force through controlled material properties rather than increased thickness
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 effectively maintains adhesion and comfort by allowing moisture vapor transmission, reducing the risk of adhesion loss and discomfort, while providing sufficient spring force to open nasal passages without causing irritation.
Implementation Method 1
breathable adhesive-coated high MVTR layer, such as polyurethane film
Implementation Method 2
the spring element has sufficient spring force to return the spring element to its original position when not under stress
Implementation Method 3
high modulus spring elements made of thermoplastic polymers like polyester, which provide the necessary spring force
Implementation Method 4
the spring element is attached to the adhesive on the first major surface of the backing
Data Source
Figure 1
Figure 2
Figure 3a~3c
AI summary
The present invention discloses a nasal dilator comprising at least one breathable layer of adhesive-coated high MVTR layer, such as a polyurethane film, one or more adhesive-coated high modulus "spring" elements for dilating the nasal passages by applying a tension force to the skin, and a carrier delivery system. The carrier delivery system comprises a separation line or split through the carrier to allow for easy delivery of the nasal dilator. The carrier aids in the handling and delivery of the thin adhesive-coated high MVTR layer.