Adhesive Patch Shim for Medical Device Peeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical devices, such as infusion sets, often experience reduced adhesive patch longevity due to peeling of the adhesive patch from the skin, caused by forces acting on the device or movement, leading to uncoupling and reduced wear life.
Innovation Solution
Incorporating a shim with a biocompatible material, such as a polymer or metal alloy, that is annular or semi-circular in shape, which is coupled to the adhesive patch to resist peeling by stiffening the edge and improving flexibility, thereby extending the adhesive patch's longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If adhesive patch is used to couple medical device to skin, then device can be delivered continuously or at intervals, but adhesive patch may peel off due to forces or movement, reducing wear life
Solution Approach 1:
The adhesive patch is divided into multiple layers including a backing layer, adhesive layer, and releasable liner. A flexible shim is added as a separate component that couples to the adhesive patch to provide additional structural support and resist peeling forces, thereby extending wear life while maintaining reliability.
Solution Approach 2:
A flexible shim made of biocompatible material is coupled to the adhesive patch. This thin film structure provides edge stiffening to resist peeling forces while maintaining flexibility to conform to skin movement, resolving the contradiction between durability and reliability.
2Duration of action of stationary object
If adhesive patch edge is stiffened to resist peeling, then adhesive longevity is extended, but flexibility may be reduced affecting user comfort
Solution Approach 1:
The flexible shim is strategically positioned at the edges of the adhesive patch where peeling forces are most prominent. This localized reinforcement provides edge stiffening exactly where needed to resist peeling, while the central adhesive area maintains full flexibility for skin conformity and user comfort.
Solution Approach 2:
The flexible shim is made from biocompatible materials that provide structural support while maintaining flexibility. This thin film structure conforms to skin movement and body contours, extending adhesive longevity without compromising user comfort through excessive rigidity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A medical device includes a hub and an adhesive patch coupled to the hub. The adhesive patch is to couple the hub to an anatomy. The adhesive patch defines an edge that extends along a perimeter of the adhesive patch. The medical device includes an anisotropic shim coupled to the adhesive patch along the perimeter of the adhesive patch proximate the edge to resist an uncoupling of the adhesive patch from the anatomy. The shim has an inner periphery spaced apart from an outer periphery and the shim is locally rigid between the inner periphery and the outer periphery.