Medical Adhesive Device With Folded Release Layer
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Solution Overview
Problem
Existing medical adhesion devices are prone to peeling off from the biological surface due to skin depression or external forces, and the protective sheets used to cover the pressure-sensitive adhesion layer are not optimally configured.
Innovation Solution
A medical adhesion device with a release sheet that includes a folded layer to facilitate easy removal and a second portion of the adhesion sheet that is not mounted to the device main body, combined with a compression member to maintain adhesion, reducing the likelihood of peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure-sensitive adhesion layer is provided on the flexible web to bond to the skin, then the compression member can be held against the skin, but the adhesion layer is likely to peel off due to skin depression or reaction force from compression
Solution Approach 1:
The adhesion sheet is divided into a first portion that is mounted to the device main body and a second portion that is not mounted, creating separate functional zones that distribute mechanical stress and prevent concentrated peeling forces
2Reliability
If a protective sheet covers the pressure-sensitive adhesion layer during shipping, then the adhesion surface is protected, but the protective sheet is difficult to remove and may interfere with proper adhesion
Solution Approach 1:
The release sheet is pre-configured with a folded layer that creates a mechanical advantage for removal, allowing the protective function to be maintained during shipping while enabling easy removal during use
Solution Approach 2:
The release sheet incorporates a folded layer that adds a dimensional element to the otherwise flat protective sheet, creating a mechanical structure that facilitates removal through the folded portion
3Device complexity
If the adhesion sheet is fully mounted to the device main body, then the device structure is simplified, but the device is more likely to peel off from the biological surface under external forces
Solution Approach 1:
The adhesion sheet is segmented into mounted and unmounted portions, where the unmounted second portion acts as a stress-relief zone that prevents peeling propagation under external forces
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 effectively prevents peeling from the biological surface and allows easy release of the adhesion sheet, ensuring consistent compression and secure attachment even under external forces.
Implementation Method 1
a pressure-sensitive adhesion layer which is bonded to the skin of the patient is provided on one surface as an adhesion surface of the flexible web
Implementation Method 2
a release sheet which covers the adhesion surface; wherein the release sheet includes a folded layer
Implementation Method 3
a compression member that compresses a wound of a patient after a sheath is extracted
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
An adhesion device according to the present disclosure includes an adhesion sheet including an adhesion surface that is adherable to a biological surface, and a mounting surface that is located on a side opposite to the adhesion surface; a device main body that is mounted to the mounting surface of the adhesion sheet; and a release sheet that releasably adheres to the adhesion surface. The adhesion sheet includes a first portion to which the device main body is mounted, and a second portion to which the device main body is not mounted. The release sheet includes a release layer that adheres to the adhesion surface of the adhesion sheet, and a folded layer which is formed of at least one layer and is folded to a side, which is opposite to the adhesion surface with respect to the release layer, to be layered. The folded layer of the release sheet is layered on the release layer of the release sheet at least at a position of the second portion of the adhesion sheet.