Self-Disinfecting Cap for Medical Injection Membranes

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Solution Overview

Problem

Medical professionals face challenges in maintaining the sterility of injection membranes during repeated access to IV bags and other medical supplies, leading to potential contamination and bloodstream infections due to time constraints and stress, even when using sterile equipment.

Innovation Solution

A self-disinfecting capping device with a disinfecting absorbent material is designed to attach to medical injection ports, ensuring continuous sterility by bringing the disinfecting agent into contact with the membrane, even when the device is not in use, and allowing easy access for medication withdrawal or injection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If medical professionals repeatedly access the injection port of the same IV bag multiple times within a few hours, then productivity is improved by reducing the need for multiple bags, but the reliability of maintaining sterility deteriorates due to increased risk of contamination

Engineering Contradiction:

Improverepeated access to same IV bagVSAvoidsterility maintenance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The device performs preliminary disinfection action by applying the disinfecting agent to the injection membrane before each access. The cap is positioned to bring the disinfecting absorbent material into contact with the membrane, ensuring sterility is restored in advance before the needle penetrates, thus enabling repeated accesses while maintaining reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The cap acts as an intermediary device between the environment and the injection membrane. It provides a protective barrier that includes the disinfecting absorbent material, mediating the interaction between external contaminants and the membrane, and allowing repeated accesses without compromising sterility

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If medical professionals use the same needle and syringe for multiple drawings from the same IV bag, then ease of operation is improved by eliminating the need for frequent needle changes, but the risk of introducing bacteria into the bloodstream increases

Engineering Contradiction:

Improverepeated use of same needle and syringeVSAvoidbacteria introduction risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The device performs preliminary disinfection of the injection membrane before each needle insertion. By positioning the cap to bring the disinfecting absorbent material into contact with the membrane in advance, it ensures the membrane is sterilized before the contaminated needle penetrates, thus enabling repeated use of the same needle while preventing bacteria introduction

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The device applies preliminary anti-action by pre-disinfecting the injection membrane before contamination can occur. The disinfecting agent is applied in advance to counteract the potential harmful effect of bacterial introduction from repeated needle uses, creating a protective barrier before the harmful action occurs

Inventive Principle:

Principle #9Preliminary anti-action

3Reliability

If medical professionals manually wipe the rubber membrane with a disinfecting pad for each access, then the sterility reliability is improved, but the ease of operation deteriorates due to time constraints and stress

Engineering Contradiction:

Improveaseptic technique complianceVSAvoiddisinfection process complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The device enables self-service disinfection by automatically positioning the disinfecting absorbent material to contact the injection membrane when the cap is placed on the port. This eliminates the need for manual wiping operations, allowing the device to perform the disinfection function autonomously and simplifying the operator's task while maintaining reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The cap serves as an intermediary device that automates the disinfection process. It positions the disinfecting absorbent material between the operator and the injection membrane, mediating the disinfection action and eliminating the need for manual wiping, thus improving ease of operation while maintaining aseptic technique compliance

Inventive Principle:

Principle #24Intermediary (Mediator)

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 ensures 100% aseptic technique compliance by maintaining the sterility of injection membranes, reducing the risk of contamination and bloodstream infections, even during multiple accesses to the same IV bag or medical supply.

Implementation Method 1

a disinfecting absorbent material disposed inside the capping portion of the device

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS11541219B2Capping device for disinfecting medical injection membranes

Publication Date: 2023.01.03 DRMA GROUP INTERNATIONAL LLC

AI summary

A device for disinfection of a medical injection port is provided. The device includes a capping portion having an inner surface, a hollow portion having an inner surface, a proximal opening, and a distal opening, a connector coupling the capping portion of the device to the hollow portion thereof, and a disinfecting absorbent material disposed inside the capping portion of the device. The connector permits movement of the capping portion between a fully-seated position on the hollow portion of the device, and a position apart from the proximal opening thereof to permit ingress to the medical injection port.