Conformable Dressing With Perforated Backing for Device Securement
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Solution Overview
Problem
Thin polymeric film dressings used for securing medical devices can peel or release from the skin due to excessive stretching, especially when accommodating varying sizes and shapes of devices, leading to inadequate securement.
Innovation Solution
A dressing design with perforations near the device securement area, allowing for isolated regions of adjustability and controlled elasticity, combined with a support material to limit excessive stretching, ensuring a secure fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If thin polymeric film dressings are used to accommodate varying device sizes, then adaptability is improved, but the dressing stretches excessively causing peeling and release from skin
Solution Approach 1:
The backing layer is segmented into multiple regions with different elasticity characteristics. A first region adjacent to the device securement area has higher elasticity to accommodate device size variations, while a second region away from the securement area has lower elasticity to maintain securement reliability and prevent peeling.
Solution Approach 2:
Different regions of the backing layer are assigned different mechanical properties. The first region near the slot is made more elastic locally to allow stretching for device accommodation, while the second region is made less elastic locally to provide structural support and prevent excessive stretching that causes peeling.
2Ease of operation
If the backing layer is made more elastic to accommodate device sizes, then ease of operation is improved, but the dressing stretches too much causing peeling
Solution Approach 1:
The backing layer is divided into functional segments: a first region with higher elasticity for ease of device accommodation and a second region with lower elasticity to maintain structural integrity and prevent excessive stretching.
Solution Approach 2:
The elastic properties are localized to specific regions. The first region adjacent to the slot has enhanced elasticity to facilitate device insertion and accommodation, while the second region maintains lower elasticity to preserve overall structural strength and prevent peeling.
3Reliability
If the backing layer is made stiffer to prevent peeling, then reliability is improved, but conformability to skin decreases
Solution Approach 1:
The backing layer is segmented into a first region with lower stiffness for skin conformability and a second region with higher stiffness for peeling resistance. This segmentation allows each region to optimize its function without compromising the other.
Solution Approach 2:
Stiffness is distributed non-uniformly across the backing layer. The second region away from the device securement area has higher stiffness locally to resist peeling forces, while the first region adjacent to the slot has lower stiffness to maintain conformability to skin contours.
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 perforated design and support material enable the dressing to accommodate varying device sizes and shapes while maintaining secure adhesion, preventing peeling and ensuring effective device securement.
Implementation Method 1
the second major surface comprises an adhesive
Implementation Method 2
a flexible backing layer with a perforation set for enabling controlled elasticity
Data Source
AI summary
When thin-film dressings are used to secure a device, the dressing might need to stretch in some areas to accommodate varying sizes of a device, while remaining stiffer in some areas to limit stretching of the materials. Excessive stretching of the materials can cause the dressing to peel away from the skin or cause the underlying device to not be sufficiently secured. The disclosed dressing can be used to secure a device and includes perforations near the device securement area to allow for isolated regions of adjustability to accommodate a secure fit between the dressing and device.