Luer Column Stepped Diameter Transition Design

Solution Overview

Problem

Existing Luer column systems require manual adjustment and adapters for cascading, leading to potential leaks and increased costs due to the variety of components.

Innovation Solution

A Luer column design with a stepped diameter transition and radial annular surfaces allows direct connection of multiple columns without adapters, enabling easy assembly and sealing, and can be actively pumped for fluid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adapters are used for cascading Luer columns, then connection between columns is achieved, but manual adjustment is required and leak risk increases

Engineering Contradiction:

Improveconnection capabilityVSAvoidleak risk

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The invention merges the adapter function directly into the Luer column structure by integrating a female Luer connection at the inlet end and a male Luer connection at the outlet end, allowing direct cascading connection without separate adapter components. This eliminates the manual adjustment and leak risks associated with separate adapters while maintaining connection capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The Luer column is designed with universal connectivity by incorporating both female and male Luer connections in the same component, enabling it to function both as a standalone filtration unit and as part of a cascaded system. This multi-functionality allows direct connection to other Luer columns without requiring different adapters for different connection scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If adapters are used for cascading Luer columns, then connection between columns is achieved, but component variety increases and costs increase

Engineering Contradiction:

Improveconnection capabilityVSAvoidcomponent variety

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention merges the adapter function directly into the Luer column structure by integrating a female Luer connection at the inlet end and a male Luer connection at the outlet end, allowing direct cascading connection without separate adapter components. This eliminates the manual adjustment and leak risks associated with separate adapters while maintaining connection capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The Luer column is designed with universal connectivity by incorporating both female and male Luer connections in the same component, enabling it to function both as a standalone filtration unit and as part of a cascaded system. This multi-functionality allows direct connection to other Luer columns without requiring different adapters for different connection scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If standard Luer columns are used, then simple structure is maintained, but direct cascading connection is not possible

Engineering Contradiction:

Improvestructure simplicityVSAvoidcascading capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The invention merges the adapter function directly into the Luer column structure by integrating a female Luer connection at the inlet end and a male Luer connection at the outlet end, allowing direct cascading connection without separate adapter components. This eliminates the manual adjustment and leak risks associated with separate adapters while maintaining connection capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The Luer column is designed with universal connectivity by incorporating both female and male Luer connections in the same component, enabling it to function both as a standalone filtration unit and as part of a cascaded system. This multi-functionality allows direct connection to other Luer columns without requiring different adapters for different connection scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4210806B1Luer column

Publication Date: 2025.09.10 ELBATRON GMBH

Figure 1a~1d
Figure 2a~2d

AI summary

The invention relates to a Luer column (2, 34) having an inlet end (6), an outlet portion (8) spaced apart therefrom, and a housing casing (4) extending from the inlet end (6) to the outlet portion (8), the outlet portion (8) extending in a direction pointing away from the inlet end (6), and the outlet portion forming a male Luer cone (18) at a distal end (16), a transition region between the Luer cone (18) and the housing casing (4) having a stepped diameter which has at least one diameter step (20, 22) each with a radial annular surface (24, 26).