Enteral Dosing Coupling With Lumen Tip for Residual Volume Control

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Solution Overview

Problem

Existing enteral fluid delivery systems, particularly those conforming to the ISO 80369-3 standard, suffer from dosing inaccuracies due to larger dimensions and volumetric differences in couplings, leading to inconsistencies in fluid delivery.

Innovation Solution

An enteral dosing control coupling with a lumen extension tip that minimizes residual fluid volume, ensuring consistent dosing accuracy by integrating a cylindrical collar and lumen extension tip, compatible with ISO 80369-3 standards, and allowing for engagement with male couplings to reduce fluid transfer anomalies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a standard ISO 80369-3 compliant coupling is used, then compatibility with enteral fluid delivery systems is ensured, but dosing accuracy deteriorates due to larger residual fluid volume

Engineering Contradiction:

ImprovecompatibilityVSAvoiddosing accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The coupling system is divided into two separate components: a female coupling component that maintains ISO 80369-3 compliance for compatibility, and a separate male coupling component with a reduced-volume hub that connects to the syringe. This segmentation allows each component to be optimized for its specific function while maintaining overall system compatibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The male coupling component is nested within the female coupling component during fluid transfer. The male coupling's reduced-volume hub is inserted into the female coupling's hub, creating a nested configuration that minimizes the residual fluid volume while maintaining the standardized external interface for compatibility.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of manufacture

If a larger volume coupling hub is used, then ease of manufacturing and assembly is improved, but dosing precision deteriorates due to increased residual fluid volume

Engineering Contradiction:

Improveassembly easeVSAvoiddosing precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If variations in coupling size and configuration are allowed, then adaptability to different devices is improved, but dosing accuracy deteriorates due to inconsistent residual fluid volume

Engineering Contradiction:

Improvedevice adaptabilityVSAvoiddosing accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The female coupling component is designed to universally accept male coupling components according to ISO 80369-3 standards, ensuring compatibility across different enteral fluid delivery devices. The standardized interface allows the system to work with various devices while the controlled internal geometry of the male coupling ensures consistent dosing performance.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3322463B1Dosing control coupling for enteral fluid transfer

Publication Date: 2025.12.03 AVENT INC

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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.