Elastomeric Disinfectant Caps for Luer Connectors

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Solution Overview

Problem

There is a need for a low-cost, simple, and inexpensive disinfectant solution for maintaining the sterility of Luer access devices, as traditional disinfection methods are often rushed or neglected, leading to potential contamination and bloodstream infections.

Innovation Solution

The development of disinfectant caps for Luer connectors that include a housing with elastomeric sidewalls and a disinfectant-containing cleaning material, which deform to engage with the Luer access device, ensuring contact and effective disinfection of the surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional alcohol swabbing is used to disinfect Luer access devices, then the disinfection process can be performed with simple materials, but the procedure is often rushed or neglected leading to contamination risk

Engineering Contradiction:
Improvedisinfection reliabilityVSAvoiddisinfection procedure compliance
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The disinfectant is pre-applied to the cleaning material within the cap before use. This preliminary action ensures that the disinfectant is already in place and does not require separate application steps during the disinfection process, thereby improving compliance while maintaining reliability

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention combines the protective cap function with the disinfection function into a single integrated device. The cap simultaneously protects the Luer connector from contamination and applies disinfectant to the access device surface, eliminating the need for separate disinfection steps and improving procedural compliance

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If a low-cost disinfectant cap is designed with simple manufacturing, then production costs are reduced, but ensuring proper engagement and contact with the Luer device may be compromised

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidengagement reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The cap incorporates an elastomeric sidewall that is flexible and capable of deforming to conform to the surface features of the Luer access device. This flexible shell design ensures reliable engagement and contact between the cleaning material and the device surface while maintaining a simple manufacturing process using common elastomeric materials

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The elastomeric sidewall is designed to dynamically deform and conform to the specific surface features of the Luer device during engagement. This dynamic adaptation ensures consistent contact and disinfection effectiveness across different device variations without requiring complex precision manufacturing

Inventive Principle:
Principle #15Dynamics

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

These caps provide a cost-effective means to maintain sterility and prevent contamination by ensuring proper disinfection of Luer access devices before and between uses, reducing the risk of bloodstream infections.

Implementation Method 1

The elastomeric sidewalls are configured to deform and conform to respective surface features of the Luer access device

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The cleaning material is positioned within the inner cavity and carries a disinfectant

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS11247035B2Disinfectant caps for Luer access devices
Publication Date: 2022.02.15 BAXTER INT INC
  • US11247035B2 patent drawing
  • US11247035B2 patent drawing
  • US11247035B2 patent drawing

AI summary

A cleaning device for disinfecting a Luer access device includes a housing and a cleaning material. The housing has an opening and elastomeric sidewalls defining an inner cavity. The elastomeric sidewalls are configured to deform and conform to respective surface features of the Luer access device. The cleaning material is positioned within the inner cavity and carries a disinfectant. The cleaning device is configured to removably engage the Luer access device, and the cleaning material is configured to contact at least a portion of the Luer access device when the cleaning device is engaged with the Luer access device.