Enteral Coupling Lumen Extension Tip for Dosing Accuracy
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Solution Overview
Problem
Enteral fluid delivery systems, particularly those conforming to the ISO 80369-3 standard, face challenges in accurate dosing due to variations in coupling sizes and configurations, leading to inaccuracies in fluid administration, and are not compatible with non-ISO 80369-3 formatted components.
Innovation Solution
The introduction of a modified female ISO 80369-3 formatted coupling with a lumen extension tip that reduces residual fluid volume and allows for consistent dosing control, enabling engagement with both ISO 80369-3 and non-ISO 80369-3 formatted couplings, and includes a plunger design that minimizes dead space within the syringe for precise fluid delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ISO 80369-3 formatted couplings are used, then standardization and compatibility are improved, but residual fluid volume increases causing dosing inaccuracies
Solution Approach 1:
The coupling system is segmented into two functional parts: the external coupling interface (ISO 80369-3 standard) and the internal lumen extension tip. This segmentation allows the external interface to maintain standardization for compatibility while the internal tip structure is optimized to minimize residual fluid volume and eliminate dosing inaccuracies.
Solution Approach 2:
The lumen extension tip extends the fluid pathway into a new dimensional space within the coupling structure. By creating an extended lumen that projects into the male coupling, the design reduces dead space and allows for more complete fluid evacuation, thereby improving dosing accuracy without compromising external compatibility.
2Ease of operation
If coupling dimensions are increased, then connectability is improved, but residual fluid volume increases leading to dosing errors
Solution Approach 1:
The coupling is divided into external dimensional features (collar, hub) that provide ease of connection, and internal lumen features (extension tip) that control fluid volume. This segmentation allows independent optimization of connectability and residual fluid management.
Solution Approach 2:
The lumen extension tip acts as an intermediary structure between the male and female couplings. It mediates the fluid flow path, ensuring that increased coupling dimensions for better connectability do not result in increased residual fluid volume, as the extension tip design facilitates complete fluid evacuation.
3Adaptability or versatility
If different coupling formats are used, then versatility is improved, but compatibility between systems deteriorates
Solution Approach 1:
The female coupling incorporates both ISO 80369-3 formatted interface and the capability to accommodate different male coupling formats through the lumen extension tip design. This universal design allows a single female coupling to work reliably with multiple male coupling formats while maintaining consistent dosing accuracy.
Data Source
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Figure 3A~3B
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AI summary
An enteral dosing control coupling comprising a cylindrical collar defining a hollow internal chamber and a lumen extension tip projecting axially into the internal chamber, the lumen extension tip defining an internal lumen extending therethrough. In example forms, the lumen extension tip is integrally formed with the cylindrical collar. In other example forms, the lumen extension tip is a separate piece and is removably engageable within the cylindrical collar. In some example forms, the present invention relates to syringes, connectors, couplings, etc. having ISO 80369-3 formatted couplings. In other example forms, the present invention relates to connectors, couplings, etc. for adapting coupling formats other than the ISO 80369-3 coupling format to the ISO 80369-3 coupling format.