Acicular Body with Low Brightness Support Plate for Visual Dissolution Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge lies in creating an acicular body that allows for easy visual observation of its presence and dissolution on the skin, as existing transparent acicular bodies made of materials like hydroxypropyl cellulose or chitosan are difficult to confirm visually once peeled off, making it hard to determine if they have sufficiently dissolved.
Innovation Solution
The acicular body features a support plate with a brightness of 5.0 or less and needles with a light transmission area that has a total light transmittance of 20% or more, allowing for visual confirmation of needle presence and dissolution, with materials like chitosan derivatives and water-soluble polymers used for the needles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a colorless transparent adhesive and a substantially colorless transparent acicular body made of hydroxypropyl cellulose or chitosan are used, then the appearance of the acicular body is improved and adhesion to the skin is enhanced, but visual observation of the needle's presence and dissolution becomes difficult
Solution Approach 1:
The patent applies color contrast by using a colored support plate (with brightness of 5.0 or less) to support the transparent needle. This allows the needle to be visually detected through its contrast against the dark background, resolving the contradiction between maintaining needle transparency for aesthetic purposes and enabling visual observation for clinical confirmation.
2Reliability
If the acicular body is made of water-soluble polymer such as chitosan, hydroxypropyl cellulose or collagen, then biocompatibility is improved and the needle can dissolve in the skin, but visual confirmation of dissolution is difficult
Solution Approach 1:
The colored support plate serves as a visual feedback mechanism. As the transparent needle dissolves in the skin, the contrast between the needle and the colored background changes, providing visual feedback to the clinician about the dissolution progress. This resolves the contradiction between using biocompatible water-soluble materials and enabling visual confirmation of dissolution.
3Difficulty of detecting and measuring
If the brightness of the support plate is reduced to 5.0 or less, then visual observation of the needle is improved, but the overall appearance and comfort may be affected
Solution Approach 1:
The support plate is designed with localized color properties only in the regions where needles are positioned, rather than making the entire patch dark. This allows visual observation of needles where needed while maintaining overall aesthetic appearance and skin comfort in non-needle areas, resolving the contradiction between enhanced visibility and overall appearance.
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 enables easy visual observation of the needle's application and dissolution, ensuring reliable placement and accurate assessment of delivery effectiveness, improving user experience and confirmation of substance delivery.
Implementation Method 1
a light transmission area which is located in an area containing the tip and has a total light transmittance of 20% or more
Implementation Method 2
The acicular body which uses a biocompatible material made of water-soluble polymer such as chitosan, hydroxypropyl cellulose or collagen can dissolve in the skin after it is pierced into the skin
Data Source
Figure 1~2B
Figure 3A~3B
Figure 4A~4B
AI summary
An acicular body of the present invention includes a support plate having a brightness of 5.0 or less; and a needle disposed on the support plate, the needle including a tip which is formed so as to pierce a skin and a light transmission area which is located in an area containing the tip and has a total light transmittance of 20% or more.