Catheter Fixation Device with Angled Abutment
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Solution Overview
Problem
Existing catheter fixation devices are bulky, difficult to secure, and often require complex procedures, failing to adequately prevent micro-pistoning and requiring multiple devices for different catheter sizes, which can lead to increased infection risks and reduced patient mobility.
Innovation Solution
A compact medical device with a deformable body member and retaining strap that securely fixes catheters with luer-lock portions, featuring a fluid-filled chamber and angled abutment to inhibit movement, allowing for easy one-handed operation and adaptation to various catheter sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing catheter fixation devices are used, then catheter fixation is achieved, but the devices are bulky and difficult to secure
Solution Approach 1:
The fixation device is divided into separate functional components: a body member for attachment to the living creature, a retaining strap for securing the catheter, and a channel portion for receiving the luer-lock. This segmentation allows each component to be optimized independently and reduces overall bulk while maintaining fixation reliability.
Solution Approach 2:
The channel portion is designed to receive and enclose the luer-lock portion of the catheter, creating a nested structure where the catheter fits within the channel. This nesting approach secures the catheter without requiring additional external support structures, reducing device volume.
2Reliability
If existing catheter fixation devices are used, then catheter fixation is achieved, but complex procedures are required
Solution Approach 1:
The retaining strap is designed to be self-securing through a simple over-and-under mechanism with the channel portion. The strap naturally locks into place when the catheter is inserted, eliminating the need for complex manual manipulation or multiple steps. The design allows single-handed operation and simplifies the overall application procedure.
3Reliability
If existing catheter fixation devices are used, then catheter fixation is achieved, but micro-pistoning is not adequately prevented
Solution Approach 1:
The channel portion is designed with specific geometric features including an angled surface and opening that locally contact the luer-lock portion of the catheter. This localized contact area provides precise engagement that prevents micro-pistoning while maintaining overall device simplicity. The angled surface creates a mechanical stop that actively resists longitudinal movement.
4Reliability
If multiple devices for different catheter sizes are used, then proper fixation for each size is achieved, but device variety increases complexity
Solution Approach 1:
The fixation device is designed with universal dimensions and geometric features that allow it to accommodate multiple catheter sizes and types. The channel portion can receive various luer-lock configurations, and the retaining strap can secure different catheter diameters. This single multi-functional device replaces the need for multiple size-specific devices, simplifying the system while maintaining fixation reliability across different applications.
Data Source
AI summary
The present invention relates to means for fixating different sizes of catheters comprising a luer-lock, which are used in healthcare and in particular to means for fixating such catheters to a living creature.