Hinged Catheter Stabilization Device with High-Friction Securement
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Solution Overview
Problem
Existing catheter attachment systems often use aggressive adhesives that can cause skin trauma upon removal and may not securely hold a wide range of catheter types, leading to irritation, dislodgement, and repeated catheter insertion at different sites.
Innovation Solution
A catheter attachment system comprising an adhesive attachment layer with a stretch-removable film and a polymeric hardgood article with a hinged design, featuring interlocking members with conformable layers and high coefficient of friction surfaces to securely hold catheter hubs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aggressive adhesives are used to securely hold catheters, then catheter security is improved, but skin trauma upon removal worsens
Solution Approach 1:
The attachment system is divided into multiple functional layers: a skin-friendly adhesive layer for gentle skin contact, a conformable intermediate layer for securement, and a protective cover layer. This segmentation allows each layer to perform its specific function without causing skin trauma, resolving the contradiction between secure holding and gentle removal.
Solution Approach 2:
The attachment system uses composite materials with different properties: a low-trauma adhesive material for skin contact, a high-friction conformable material for catheter securement, and a protective cover material. This composite structure enables both strong catheter security and gentle skin removal simultaneously.
2Reliability
If conformable layers with high coefficient of friction are used, then catheter hub securement is improved, but device complexity worsens
Solution Approach 1:
The conformable layer and high-friction surface are merged into a single integrated layer rather than separate components. This consolidation provides both securement functions simultaneously, reducing device complexity while maintaining reliable catheter hub securement.
Solution Approach 2:
The conformable layer with high coefficient of friction serves multiple functions: it provides securement through friction, adapts to different catheter hub shapes and sizes, and maintains stability during patient movement. This multi-functionality reduces the need for additional specialized components.
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 system provides secure attachment of various catheter types, minimizes skin trauma during removal, and reduces the need for repeated catheter insertions by allowing easy and gentle removal of the attachment system.
Implementation Method 1
an adhesive attachment layer with a first major surface and a second major surface, the first major surface comprising an adhesive surface suitable for attachment to mammalian skin
Implementation Method 2
The second major surface of the holding member comprises at least a conformable layer that has a high coefficient of friction with a value of 0.5 or higher
Data Source
AI summary
A catheter attachment system includes an adhesive attachment layer and a polymeric hardgood article 100 for holding the catheter. The polymeric hardgood is a hinged article that contains two interlocking members. The first member is a holding member 120 with a securement surface designed to hold the hub of a catheter. The securement surface is a conformable layer that has a high coefficient of friction with a value of 0.5 or higher. The second member 130 is a cover member hingably linked to the holding member, where the cover member is designed to contact at least a portion of the securement surface of the holding member when closed, to hold the hub of a catheter.