Time-Dependent Silicone Adhesive Wound Dressing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wound dressings with high-tack adhesives are difficult to remove without causing discomfort, injury, or re-opening the wound, and they obscure visual inspection of the wound, necessitating removal for assessment.
Innovation Solution
A multi-layer wound dressing with a transparent or semi-transparent carrier film and a silicone-based adhesive layer that decreases tackiness over time, allowing for easy removal and visual inspection without disturbing the wound, featuring a sacrificial liner and absorbent materials for fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-tack adhesive is used to secure the dressing in place, then the dressing remains stable and protected, but the dressing becomes difficult to remove and may cause injury or discomfort
Solution Approach 1:
The adhesive layer transitions from a high-tack state during application and initial wear to a low-tack state over time, allowing the dressing to be securely applied and then easily removed. This dynamic change in adhesive properties resolves the contradiction between initial stability and eventual ease of removal.
Solution Approach 2:
The adhesive layer's tackiness parameter changes over time, starting high for secure attachment and gradually decreasing to enable pain-free removal. This time-dependent parameter change allows the same adhesive to provide both strong initial bonding and easy subsequent removal.
2Object-affected harmful factors
If opaque dressing material is used to protect the wound, then the wound is shielded from external harm, but visual inspection of the wound requires removal of the dressing
Solution Approach 1:
The carrier film and adhesive layer are made transparent or translucent, allowing visual inspection of the wound through the dressing material itself. This eliminates the need to remove the protective dressing for routine monitoring, saving time and maintaining continuous wound protection.
3Reliability
If pressure is applied to adhere the wound dressing to the patient, then the dressing sticks securely, but the patient experiences discomfort
Solution Approach 1:
The patent replaces pressure-sensitive adhesive with a time-dependent adhesive system that bonds without requiring significant application pressure. The adhesive develops its bonding strength over time rather than requiring immediate high pressure, eliminating the source of patient discomfort during application.
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
Facilitates pain-free removal and continuous wound monitoring through transparent layers, reducing the risk of injury and infection while maintaining wound protection and moisture.
Implementation Method 1
an adhesive layer comprising a silicone-based material and in contact with the carrier film and exhibiting a tackiness formulated and configured to decrease over a duration of time
Implementation Method 2
a carrier film comprising a transparent material or a semi-transparent material
Implementation Method 3
one or more absorbent materials on a side of the transparent adhesive layer opposite the transparent carrier film
Data Source
AI summary
A multi-layer wound dressing comprises a carrier film comprising a transparent material or a semi-transparent material, and an adhesive layer comprising a silicone-based material and in contact with the carrier film and exhibiting a tackiness formulated and configured to decrease over a duration of time. Related multi-layer wound dressings are also disclosed.