Catheter Securement Device with Movable Strap
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Solution Overview
Problem
Catheterization systems often cause discomfort and pressure ulcers due to chafing from tubing, and existing securement devices fail to adequately address these issues by providing sufficient security and comfort.
Innovation Solution
A securement device with a body portion and a strap portion, where the body portion includes a tubular channel and a port cavity, and the strap portion is movable between closed and open positions to securely retain the catheter tube assembly, allowing for pivoting and access, made from a resilient material like silicone to accommodate patient movement and reduce skin irritation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the catheter tubing is securely fastened to the patient's skin, then the reliability of the catheterization system is improved, but the patient experiences chafing and skin irritation
Solution Approach 1:
The securement device is divided into multiple functional segments: a support structure with adhesive pad for skin attachment, a body portion with channel for tubing reception, and a strap portion for additional securing. This segmentation allows each component to perform its specific function while distributing the securing force away from direct skin contact points, reducing chafing while maintaining catheter stability
Solution Approach 2:
The securement device acts as an intermediary between the catheter tubing and the patient's skin. Instead of the tubing directly contacting and chafing the skin, the device provides a protective interface that secures the tubing through the channel and strap while the adhesive pad contacts the skin, eliminating direct friction between tubing and skin
2Reliability
If the securement device is made rigid to provide stable support, then the reliability of catheter positioning is improved, but the device cannot accommodate patient movement causing discomfort
Solution Approach 1:
The securement device incorporates dynamic characteristics through the movable strap portion that can be adjusted between different positions and the flexible resilient material that allows movement. The strap can be positioned at various locations around the body part, and the material flexes with patient movement while maintaining securement, providing both stability and adaptability
Solution Approach 2:
The device uses resilient material with specific elastic properties that allow it to deform and accommodate movement while returning to its original shape to maintain securement. The material's mechanical parameters (elasticity, flexibility) are selected to balance between providing stable support and accommodating physiological movements of the patient's body
3Reliability
If the strap portion is always in closed position to secure the catheter, then the reliability is improved, but access to the luer port is blocked causing operational difficulty
Solution Approach 1:
The strap portion is designed to be dynamically movable between open and closed positions rather than being fixed. This allows the strap to be opened when port access is needed and closed when security is the priority, providing operational flexibility. The movable nature of the strap enables easy access to the luer port while maintaining catheter security when required
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 securement device effectively reduces chafing and pressure ulcers by securely holding the catheter tube assembly in place while allowing for necessary movement and access, thereby enhancing patient comfort and preventing skin irritation.
Implementation Method 1
made from a resilient material like silicone to accommodate patient movement and reduce skin irritation
Data Source
AI summary
In one aspect, a catheter securement device comprises a body portion having an upper surface and a lower surface, the body portion having a pocket that comprises a substantially tubular channel, the channel being open at the upper surface, the pocket further including a port cavity in communication with the channel. The securement device further comprises a strap portion movable between a fully closed position and a range of open positions. The strap portion at least partially covers the pocket when in a closed position thereby closing the channel at the upper surface. The strap portion allows access to the channel when in an open position.