Antimicrobial Sealing in Fluid Couplings to Prevent Leakage
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Solution Overview
Problem
Existing medical coupling devices face issues with involuntary displacement and leakage during fluid transfer, posing risks to patient safety and treatment efficacy, particularly when exposed to pulling forces or accidental movements.
Innovation Solution
A coupling device with antimicrobial coatings on sealing elements that maintain sealing and prevent leakage during connection and disconnection, featuring a design that allows fluid contact with the coating to initiate antimicrobial effects, minimizing bacterial growth and biofilm formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealing elements are used in coupling devices, then sealing function is provided, but bacterial colonies and biofilms can adhere to the sealing elements
Solution Approach 1:
The sealing elements are modified by applying antimicrobial coatings that change the surface properties of the sealing elements. This coating creates an antimicrobial surface that prevents bacterial adhesion while maintaining the original sealing function, thus resolving the contradiction between providing sealing and preventing bacterial adherence
Solution Approach 2:
The sealing elements are constructed as composite structures combining base sealing material with antimicrobial coating layers. This composite approach allows the device to simultaneously achieve effective sealing through the base material and antimicrobial protection through the coating, preventing bacterial colony formation on the sealing surfaces
2Reliability
If the coupling device is designed to allow tube retraction during disconnection, then fluid can be contained in a first space, but the device structure becomes more complex
Solution Approach 1:
The coupling device integrates multiple functions into unified components: the sealing elements serve both as sealing barriers and as boundaries defining the first and second spaces. The housing structure simultaneously provides mechanical support, guides tube retraction, and contains the fluid spaces. This merging of functions achieves fluid containment without proportionally increasing device complexity
3Reliability
If the sealing elements are made to abut each other for sealing, then sealing effectiveness is improved, but the risk of leakage during connection remains
Solution Approach 1:
The coupling device incorporates a fluid-filled first space that acts as a cushioning mechanism before actual connection is complete. This pre-filled space provides a buffer that compensates for minor misalignments or gaps during the connection process, preventing leakage while the sealing elements establish their abutting seal. The fluid cushion absorbs connection variations that would otherwise cause leakage
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 leak-proof fluid transfer, reduces contamination risks, and provides antimicrobial protection, enhancing patient and medical staff safety by preventing fluid loss and bacterial adherence.
Implementation Method 1
The antimicrobial coating is configured to provide an antimicrobial effect upon contact with the fluid
Data Source
AI summary
A coupling device (100) for transferring a fluid is provided. The coupling device comprises a first housing (110), a tube (140) and a first sealing element (220). The coupling device further comprises a second housing (300) comprising a channel (310) and a second scaling element (320). At a first and second stage of a connection of the coupling device, the first and second sealing elements, of which at least one comprises an antimicrobial coating, are configured to abut each other and sealingly separate the tube and the channel, whereafter the tube projects through the first and second sealing elements for enabling a transfer through the coupling device. At a first and second stage of a disconnection of the coupling device, first (400) and second spaces (410) are respectively defined for enclosing the fluid, whereby the fluid is arranged to come into contact with the antimicrobial coating.