Medical Dressing With Segmented Release Liner Grip

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Thin adhesive film dressings are difficult to handle and apply, often wrinkle, and risk contamination during application, especially in surgical settings where sterility is crucial, due to their self-adhesive nature and lack of self-supporting properties.

Innovation Solution

A dressing design with a backing layer, wound pad, and adhesive layer, featuring a release liner divided into removable portions that form grip members, allowing precise application without touching the wound site, minimizing contamination risk and facilitating wrinkle-free application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a thin adhesive film dressing is used, then the dressing can conform well to skin contours and is pliable, but the dressing becomes difficult to handle and may wrinkle or stick to itself during application

Engineering Contradiction:

Improveconformability to skin contoursVSAvoidhandling during application

Core Design Contradiction:

ShapeVSEase of operation

Solution Approach 1:

The release liner is divided into multiple laterally disposed sections (first, second, and third sections) that can be removed in sequence. This segmentation allows the user to peel back the release liner in manageable portions while maintaining control over the adhesive film, preventing the entire film from sticking to itself or wrinkling during application.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If a release liner is attached to the adhesive coating to facilitate handling, then the dressing becomes easier to handle, but the adhesive coated film can still wrinkle and adhere to itself once the release liner is removed

Engineering Contradiction:

Improvehandling during applicationVSAvoidwrinkle formation

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The adhesive film is pre-positioned against the skin surface while still attached to the release liner, which acts as a temporary support structure. This preliminary action allows the adhesive film to be placed in the correct position without wrinkling or self-adhesion, as the release liner maintains its structural integrity during the positioning phase.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The release liner is divided into multiple laterally disposed sections that can be removed in sequence. This segmentation allows the user to peel back the release liner in manageable portions while maintaining control over the adhesive film, preventing the entire film from sticking to itself or wrinkling during application.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the release liner is removed completely before application, then the adhesive surface is exposed for application, but the risk of contamination increases as the user must touch the adhesive surface to position it

Engineering Contradiction:

Improvepositioning accuracyVSAvoidcontamination risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The release liner is divided into multiple laterally disposed sections that can be removed in sequence. The user can peel back the release liner to expose only the portion of the adhesive film needed for positioning, minimize direct contact with the adhesive surface, and reduce the risk of contamination while maintaining precise positioning control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #10Preliminary action

4Stability of the object's composition

If a three piece release liner system is used, then stiffness is provided to prevent the dressing from sticking to itself, but the side sections may fall down onto the wound or interfere with the incision during removal

Engineering Contradiction:

Improveprevention of self-adhesionVSAvoidcontamination of wound site

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The release liner is divided into multiple laterally disposed sections that can be removed in sequence. This segmentation provides the stiffness needed to prevent the adhesive film from sticking to itself while allowing controlled removal that minimizes the risk of sections falling onto the wound or interfering with the incision.

Inventive Principle:

Principle #1Segmentation

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

Enables precise, sterile, and wrinkle-free application of thin adhesive film dressings, maximizing absorbent area utilization and reducing the risk of contamination during surgical wound management.

Implementation Method 1

The purpose of the adhesive is to adhere to the wound and/or to the skin surrounding the wound and to fixate the dressing in a desirable position

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

A release liner is releasably attached to the wound facing surface of the adhesive layer

Methodology Applied

Scientific EffectRelease liner adhesion: Adhesive

Data Source

PatentUS11826236B2Medical dressing

Publication Date: 2023.11.28 MOLNLYCKE HEALTH CARE AB

AI summary

The present invention relates to a dressing having a lateral (x) and a longitudinal (y) extension. The dressing comprises a backing layer, a wound pad contoured by a pair of lateral edges extending in parallel to each other in the lateral direction, and an adhesive layer having a wound facing surface and a non-wound facing surface. The wound pad is arranged between the backing layer and the adhesive layer, and the backing layer extends beyond the periphery of the wound pad to define a border portion along the contour of the wound pad. A release liner is releasably attached to the wound facing surface of the adhesive layer. The release liner is divided by a first dividing line extending in the lateral direction of the dressing to form at least a first removable portion, and a second removable portion, wherein the first and the second portions overlap along the first dividing line to form a first grip member.