Angled-Fin Conduit Retention for Bidirectional Pull Resistance
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Solution Overview
Problem
Existing fluid line securement devices in clinical settings provide limited pull resistance, accommodate a narrow range of conduit diameters, and require frequent adjustments, often causing skin irritation and unintended removal, which can lead to adverse clinical outcomes.
Innovation Solution
A conduit securement device with resiliently deformable fins angled at acute angles to the longitudinal direction, providing enhanced pull resistance and accommodating a range of conduit diameters, while minimizing interference with patient movement and other medical apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adhesive or tape is used to secure a fluid line, then the line can be readily adapted to different types or diameters, but hair, sweat or other fluids can weaken the adhesion and only limited pull resistance can be achieved
Solution Approach 1:
The patent replaces adhesive/tape-based securement with a mechanical securement system using a retention device that physically retains the line through friction and geometric constraints. The device uses a channel with resilient blades that apply lateral pressure to the line, providing mechanical retention instead of chemical adhesion.
Solution Approach 2:
The patent employs curved or angled surfaces within the retention device channel to create effective retention. The resilient blades are disposed at an angle to the channel, creating a wedge-like effect that converts lateral line movement into increased friction and normal force against the line, enhancing pull resistance through geometric design rather than adhesive strength.
2Adaptability or versatility
If adhesive or tape is used to secure a fluid line, then the line can be readily adapted to different types or diameters, but these measures must be constantly renewed and can cause skin irritation
Solution Approach 1:
The patent replaces adhesive/tape-based securement with a mechanical securement system using a retention device that physically retains the line through friction and geometric constraints. The device uses a channel with resilient blades that apply lateral pressure to the line, providing mechanical retention instead of chemical adhesion.
Solution Approach 2:
The retention device acts as an intermediary between the line and the patient's skin. Instead of adhesive directly contacting and potentially irritating the skin, the mechanical device provides retention through its structure, with only minimal contact elements touching the skin, thereby eliminating skin irritation while maintaining adaptability.
3Adaptability or versatility
If resilient clamping elements are oriented perpendicular to the channel, then the device can accommodate various line diameters, but this limits the surface area that contacts a conduit and the amount of pull resistance
Solution Approach 1:
The patent employs asymmetric positioning of the resilient blades within the channel. The blades are disposed at an angle to the channel rather than symmetrically perpendicular, creating an asymmetric force distribution that enhances pull resistance in the direction of line tension while maintaining the ability to accommodate various line diameters through the compliance of the resilient material.
Solution Approach 2:
The patent employs curved or angled surfaces within the retention device channel to create effective retention. The resilient blades are disposed at an angle to the channel, creating a wedge-like effect that converts lateral line movement into increased friction and normal force against the line, enhancing pull resistance through geometric design.
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 reduces the risk of unintended removal and disruption of medical conduits by distributing forces along the conduit length, offering improved pull resistance and adaptability to various conduit sizes and orientations.
Implementation Method 1
a first array of resiliently deformable fins disposed along the channel extending from at least a first side and an opposite second side of the channel; and a second array of resiliently deformable fins disposed along the channel
Data Source
Figure 1a~1b
Figure 1c
Figure 2
AI summary
P325732WO ABSTRACT Title: Conduit Securement Device (Figure 14(a)) Disclosed is a conduit securement device, for securing a conduit such as a medical conduit. The device has a body defining a channel for receiving the a conduit and two arrays of fins 5 extending from opposed sides of the channel and oriented at an acute angle in relation to a longitudinal direction along the channel. The arrays of fins are oriented in opposite directions in relation to one another. A conduit inserted in the channel resiliently deforms at least the ends of the fins, and friction between the fins and the conduit provide resistance to longitudinal motion of the conduit along the channel, i.e. "pull resistance", in either direction.10