COMPARATIVE EFFICIENCY OF THE LAMINAR PNEUMATIC PROTECTION SYSTEM FOR COUNTERACTING THE PENETRATION OF BACTERIAL AGENTS

Authors

  • I. M. Klishch I. Horbachevsky Ternopil National Medical University
  • A. O. Kovalchuk I. Horbachevsky Ternopil National Medical University
  • I. I. Medvid I. Horbachevsky Ternopil National Medical University
  • A. V. Pavlyshyn I. Horbachevsky Ternopil National Medical University
  • S. I. Klymnyuk I. Horbachevsky Ternopil National Medical University

DOI:

https://doi.org/10.11603/1811-2471.2021.v.i3.12521

Keywords:

laminar pneumatic protection system, pneumatic helmet, antibacterial protection, micrococci

Abstract

The COVID-19 coronavirus pandemic has necessitated the development of new respiratory protective devices that combine reliability and ergonomics of use. The study performed an experimental evaluation of the bacterial impermeability of an innovative conceptual model of a pneumatic helmet with a laminar air supply system.

The aim  – to conduct a comparative assessment of the filtering capacity of the proposed conceptual model of a pneumatic helmet with the determination of its permeability for bacterial culture of micrococci. Evaluate the features of a potential bacterial spreading inside the device.

Material and Methods. The developed conceptual model of a pneumatic helmet was tested to determine its resistance to bacterial agents (Micrococcus luteus) for six hours of continuous operation. The microorganisms were fed in the form of an aerosol to the external filter of the operating device, followed by titration and seeding. Assessment of bacterial amount was performed by counting colony-forming units. A Sheffield dummy head was used to study the features of potential bacterial spreading in the interior of the device. The study was repeat when replacing filters with gauze masks and removing them. As a control, the nutrient medium container was placed inside the off helmet for the specified period

Results. The use of a pneumatic helmet in a complete set counteracted the impregnation of bacterial aerosol, which manifested itself in the absence of growth on nutrient media. In the absence of filters, the highest levels of bacterial contamination were determined on the inner surface of the glass and the upper part of the front of the Sheffield manikin. When replacing the filters with gauze masks, 98.8% of microorganisms were saved compared to the results of using a pneumatic helmet without protective barriers.

Conclusions. Confirmation of filtration efficiency and insulating capacity of the proposed system in relation to its impermeability for testing the culture without growth on nutrient media. The protection of the lower contour of the pneumatic helmet against microorganisms has been confirmed.

References

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Published

2021-12-01

How to Cite

Klishch, I. M., Kovalchuk, A. O., Medvid, I. I., Pavlyshyn, A. V., & Klymnyuk, S. I. (2021). COMPARATIVE EFFICIENCY OF THE LAMINAR PNEUMATIC PROTECTION SYSTEM FOR COUNTERACTING THE PENETRATION OF BACTERIAL AGENTS. Achievements of Clinical and Experimental Medicine, (3), 100–103. https://doi.org/10.11603/1811-2471.2021.v.i3.12521

Issue

No. 3 (2021)

Section

Оригінальні дослідження

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