Dual-Layer Adhesive Composite for Radiation Therapy Skin Marking
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Solution Overview
Problem
Current adhesive composites are inefficient and unreliable for maintaining temporary tattoos on patients during radiation therapy treatments, often wrinkling or folding during application and handling, and lack durability.
Innovation Solution
A dual-layer adhesive composite with a flexible, transparent first layer and a rigid second layer, where the second layer is releasably adhered to the first layer, providing stability during handling and application, and can be separated to ensure secure adhesion to the skin without compromising the integrity of the first layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thin, flexible adhesive composite is used to cover temporary tattoos, then it conforms well to the skin surface, but it wrinkles and folds during handling and application, compromising reliability
Solution Approach 1:
The adhesive composite is constructed as a multi-layer composite material system. The flexible adhesive layer is combined with a rigid support layer, creating a composite structure that prevents wrinkling and folding while maintaining conformability to the skin surface. This composite material approach resolves the contradiction by integrating materials with complementary properties.
Solution Approach 2:
The adhesive composite is divided into distinct functional layers: a flexible adhesive layer for skin contact and a rigid support layer for structural integrity. This segmentation allows each layer to perform its specific function - the flexible layer conforms to the skin while the rigid layer prevents handling-related deformations.
2Ease of operation
If a rigid support structure is added to prevent wrinkling, then handling and application become easier, but the conformability to the skin surface is compromised
Solution Approach 1:
The composite structure combines rigid and flexible materials in a layered configuration. The rigid support layer provides handling stability, while the flexible adhesive layer maintains conformability to the skin surface. The composite material design allows both properties to coexist without compromising either function.
Solution Approach 2:
Different regions of the adhesive composite have different mechanical properties. The support layer provides rigidity where needed for handling, while the adhesive layer provides flexibility where needed for skin conformability. This local differentiation of material properties resolves the contradiction between handling stability and skin conformability.
3Illumination intensity
If the adhesive layer is made thinner for better transparency, then visibility of the tattoo is improved, but the adhesion strength and durability are reduced
Solution Approach 1:
The composite structure allows the adhesive layer to be thin for transparency while the rigid support layer provides the necessary structural strength and durability. The combination of layers compensates for the reduced thickness of the adhesive layer, maintaining both transparency and adhesion reliability.
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 keeps temporary tattoos in place for extended periods, preventing wrinkles and folds, and maintains adhesion during daily activities and bathing, ensuring precise positioning for radiation therapy.
Implementation Method 1
a first relatively conformable transparent layer with an adhesive lower surface
Implementation Method 2
a second relatively rigid layer releasably adhered to the upper surface of the first layer
Data Source
AI summary
There is provided an adhesive composite cover and method of use in which the cover is well suited to effectively cover a temporary tattoo utilized in radiation therapy treatments. The cover includes a transparent, flexible layer with a rigid layer releasably adhered thereto. The first, flexible layer has a lower adhesive surface, an upper low-adhesion surface and a predefined peripheral edge. The second, rigid layer has a lower surface releasably adhered to the upper low-adhesion surface of the first layer, an opposing upper exposed surface, and a peripheral edge cooperative with the predefined peripheral edge of the first layer to preserve the integrity of the first layer during handling and application. The second layer is removed from the first layer only after the first layer is adhered to a patient's skin.