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A prototype catheter designed for ultraviolet C disinfection.

J Bak¹, T Begovic

¹DTU Fotonik, Technical University of Denmark, Roskilde, Denmark. jiba@fotonik.dtu.dk

The Journal of Hospital Infection

|May 15, 2013

Summary

This summary is machine-generated.

New catheter designs allow for complete intraluminal disinfection using ultraviolet C (UVC) light. This innovation offers a promising method for decontaminating medical devices, enhancing patient safety by reducing infection risks.

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Area of Science:

Biomedical Engineering
Infectious Disease Control
Medical Device Design

Background:

Ultraviolet C (UVC) light can disinfect the internal spaces of polymer tubes.
Current catheter designs impede effective UVC disinfection due to hub and connector configurations.

Purpose of the Study:

To engineer a single-lumen catheter capable of full-lumen UVC disinfection.
To overcome design limitations hindering UVC efficacy in existing catheters.

Main Methods:

Developed a prototype single-lumen catheter for UVC exposure alongside a control.
Contaminated catheters with Pseudomonas aeruginosa (10^4–10^5 cfu/mL).
Assessed disinfection efficacy via sampling and plate counting after UVC treatment.

Main Results:

Two minutes of UVC exposure achieved a 4 log10 reduction in bacterial load.
The disinfection dose at the catheter tip was approximately 40 mJ/cm(2).
Shorter UVC exposure times are feasible for effective disinfection.

Conclusions:

Catheter designs enabling complete intraluminal UVC disinfection are achievable.
UVC light presents a viable decontamination strategy for clinical catheter applications.
This technology can improve catheter safety and reduce healthcare-associated infections.