Microneedle Sheet With Adhesive Openings for Skin Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional microneedle technologies face issues where the adhesive layer's components can affect the performance of the microneedle sheet layer due to direct contact, leading to potential interference with the cosmetic or medicinal effects.
Innovation Solution
A microneedle device with an adhesive layer featuring openings and a microneedle sheet layer that partially overlaps these openings, allowing the microneedles to be formed from materials that dissolve or swell in vivo, optionally combined with an electrode sheet layer for applying pulsed current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the microneedle sheet layer is in close contact with the adhesive layer, then the microneedle sheet layer can be stably attached to the skin surface, but the adhesive components may permeate and affect the performance of the microneedle sheet layer
Solution Approach 1:
The adhesive layer is divided into multiple regions: adhesive regions for attachment and non-adhesive regions (openings) for preventing component permeation. This segmentation allows the adhesive layer to provide stable attachment while creating barriers that prevent adhesive components from reaching and interfering with the microneedle sheet layer performance.
Solution Approach 2:
The non-adhesive regions act as intermediary barriers between the adhesive layer and the microneedle sheet layer. These openings prevent direct contact and permeation of adhesive components, serving as a protective interface that maintains attachment stability while blocking harmful factor transmission.
2Strength
If the adhesive layer covers the entire back surface of the microneedle sheet layer, then secure attachment is achieved, but the adhesive components can directly contact and potentially degrade the microneedle materials
Solution Approach 1:
The adhesive layer exhibits local quality variation with adhesive regions providing strong attachment strength where needed, and non-adhesive regions providing protection against component permeation. This spatial differentiation of properties allows the system to achieve both strong attachment and preserved microneedle performance in different 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
This design reduces the impact of adhesive components on the microneedle performance, enabling efficient penetration and dissolution of the microneedles, enhancing skincare effects such as hydration, collagen production, and wrinkle improvement.
Implementation Method 1
the substrate and the microneedles are formed from a material which dissolves or swells in vivo
Implementation Method 2
the substrate and the microneedles are formed from a material which dissolves or swells in vivo
Implementation Method 3
the adhesive layer has one or more openings... the microneedle sheet layer is arranged so as to at least partially overlap the openings of the adhesive layer
Data Source
AI summary
To provide a novel microneedle device which reduces the hassle of hydrating the skin in advance. A microneedle device 100 comprises an adhesive layer 1 and a microneedle sheet layer 10, wherein the adhesive layer 1 has one or more openings 1a, the microneedle sheet layer 10 has a substrate 2 and a plurality of microneedles 3 which protrude from the substrate 2, the substrate 2 and the microneedles 3 are formed from a material which dissolves or swells in vivo, and the microneedle sheet layer 10 is arranged so as to at least partially overlap the openings la of the adhesive layer 1.