Segmented Release Liner for Wound Closure Adhesive Control
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Solution Overview
Problem
Existing wound closure devices face challenges with adhesive transfer to users' fingers or gloves, difficulty in repositioning the closure strip, accidental adherence of objects, and instability during tissue approximation due to the lack of a multi-release liner system.
Innovation Solution
A wound closure device featuring a three-part release liner assembly with a porous wound closure strip coated with a pressure-sensitive adhesive, allowing for easy repositioning and minimizing adhesive transfer, combined with a polymerizable adhesive composition for enhanced bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single release liner is used to protect the adhesive, then the adhesive is protected from denigration, but adhesive transfer to users' fingers or gloves occurs and grip to tissue is reduced
Solution Approach 1:
The release liner is divided into three separate components: a first release liner covering the first adhesive, a second release liner covering the second adhesive, and a third release liner covering the third adhesive. Each liner can be independently removed, allowing users to maintain grip on the device while selectively exposing adhesives only when needed for tissue bonding, thereby preventing adhesive transfer to fingers or gloves.
2Ease of operation
If the wound closure strip is held by the edges, then manipulation is possible, but denigration of the adhesive occurs
Solution Approach 1:
The first, second, and third release liners serve as intermediary protective layers between the user's hands and the adhesives. Users can grasp the device at the edges or handles without directly contacting the adhesives, as the release liners remain in place during manipulation and only need to be removed when adhesive exposure is required, thus preventing adhesive denigration.
3Strength
If pressure sensitive adhesive is applied to both sides of the wound closure strip, then bonding capability is maximized, but accidental adherence of objects occurs
Solution Approach 1:
Pressure sensitive adhesive is applied selectively to specific regions of the wound closure strip rather than uniformly across the entire surface. The first adhesive is applied to a first region, the second adhesive to a second region, and the third adhesive to a third region. This localized application ensures bonding capability at the wound site while preventing accidental adherence of surrounding objects or surfaces.
4Ease of operation
If a multi-release liner system is implemented, then repositioning ease and manipulation stability are improved, but device complexity increases
Solution Approach 1:
The release liner system is segmented into three independent liners that can be removed sequentially or selectively. This segmentation allows users to remove only the necessary liners for repositioning or adjustment without exposing all adhesives simultaneously, maintaining manipulation stability while enabling easy repositioning. The modular nature of the segmented liners actually simplifies the user experience compared to a single complex liner system.
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 device minimizes adhesive transfer, allows for easy repositioning of the wound closure strip, prevents accidental adherence, and provides stable manipulation during tissue approximation, ensuring effective wound closure with reduced user interference.
Implementation Method 1
a pressure-sensitive adhesive, allowing for easy repositioning and minimizing adhesive transfer
Implementation Method 2
combined with a polymerizable adhesive composition for enhanced bonding
Implementation Method 3
A wound closure device featuring a three-part release liner assembly with a porous wound closure strip
Data Source
Figure 1a~1b
Figure 1c~1f
Figure 1a'~1b'
AI summary
A wound closure device comprising a wound closure strip having a wound facing side and a top side, the wound facing side comprising an adhesive applied over at least a portion of the wound facing side; a release liner assembly detachably adhered to the strip by the adhesive, the release liner assembly being a backing film comprising a first frame, a central section, and a second frame which are individually peelable; and wherein the central section of the release liner assembly comprises at least one tab located at an edge of the release liner assembly.