Aperture Dressing for Insulin Infusion Set Fixation
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Solution Overview
Problem
Current adhesive dressings for insulin infusion sets are inadequate for securing the device during strenuous activities and require complete removal to disconnect the pump, which is inconvenient and may lead to water permeation and microbial growth risks.
Innovation Solution
A dressing with a film having a skin-contacting adhesive surface, a releasable backing layer, and a releasable liner with an aperture matching the infusion set hub geometry, allowing secure fixation without full dressing removal, facilitated by removable handles and a tab-like edge for easy backing layer removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a standard square adhesive film dressing is used to cover the whole infusion set, then additional fixation security is provided, but the dressing must be completely removed before disconnecting the pump which is inconvenient and increases water permeation risk
Solution Approach 1:
The aperture in the film divides the dressing into separate functional zones: a first portion that can be removed for pump connection/disconnection and a second portion that remains to maintain fixation security and protect the infusion site. This segmentation allows the dressing to provide both secure fixation and ease of operation.
2Ease of operation
If the dressing is completely removed to disconnect the pump, then easy access is achieved, but water permeation risk increases and may facilitate microbial growth
Solution Approach 1:
The aperture creates a first removable portion and a second retained portion of the dressing. When the pump needs to be disconnected, only the first portion is removed, allowing access while the second portion remains in place to continue protecting against water permeation and microbial growth.
Solution Approach 2:
The aperture is pre-formed in the film with a geometry matching the hub perimeter, so that when the first portion is removed, the second portion is already positioned to provide continuous protection at the infusion site, eliminating the need for complete dressing removal and replacement.
3Ease of manufacture
If a non-woven adhesive pad is used to hold the infusion set, then basic adhesion is provided, but it is inadequate for securing the device during strenuous activity
Solution Approach 1:
The dressing combines a non-woven adhesive pad with a flexible film layer that has an aperture. This composite structure provides both the adhesive properties of the non-woven pad and the secure, form-fitting coverage of the film, creating a dressing that maintains fixation strength during strenuous activity while allowing pump access.
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 dressing provides secure fixation of insulin infusion sets during activities while minimizing water permeation and facilitating easy connection/disconnection, reducing the risk of microbial growth and enhancing user convenience.
Implementation Method 1
the skin-contacting surface being provided with an adhesive
Data Source
AI summary
A dressing, for use in securing an infusion set on a skin surface, the dressing consisting of a film having a skin contacting surface and a non-skin-contacting surface, the skin-contacting surface being provided with an adhesive; a releasable backing layer provided on the non-skin-contacting surface of the film; a releasable liner provided on the skin-contacting surface of the film layer and overlaying the adhesive wherein an aperture is provided having a first portion extending from an edge of the film, backing layer and liner opening into a second portion having a geometry which is identical or substantially similar to the geometry of the perimeter of the hub of an infusion set, and wherein at least one handle is provided between the film and the liner.