Optimization of a RF-generated CF4/O2 gas plasma sterilization process

2003 ◽  
Vol 65B (2) ◽  
pp. 239-244 ◽  
Author(s):  
Klaus S. Lassen ◽  
Bolette Nordby ◽  
Reinar Grün
Keyword(s):  
Plasma Sterilization ◽  
Gas Plasma ◽  
Sterilization Process

The impact of vacuum freeze-drying on collagen sponges after gas plasma sterilization

2006 ◽  
Vol 17 (1-2) ◽  
pp. 61-75 ◽  
Author(s):  
M. Markowicz ◽  
E. Koellensperger ◽  
G. C. M. Steffens ◽  
M. Frentz ◽  
N. Schrage ◽  
...  
Keyword(s):  
Freeze Drying ◽  
Plasma Sterilization ◽  
Gas Plasma ◽  
The Impact

Application of Hydrogen Peroxide Gas Plasma Method for Porous Polyurethane Sterilization

2007 ◽  
Vol 342-343 ◽  
pp. 905-908 ◽  
Author(s):  
Mi Hee Lee ◽  
Yeon I Woo ◽  
In Seop Lee ◽  
Jeong Koo Kim ◽  
Jong Chul Park
Keyword(s):  
Hydrogen Peroxide ◽  
Tissue Engineering ◽  
Medical Devices ◽  
Microbial Contamination ◽  
Polymer Scaffold ◽  
Plasma Method ◽  
Plasma Sterilization ◽  
Gas Plasma ◽  
Engineering Materials

Tissue-engineering must be either manufactured aseptically or sterilized after processing. To extend protection of medical devices against microbial contamination, various sterilization methods have been suggested. Hydrogen peroxide gas plasma sterilization has been applied in hospitals worldwide for almost a decade. In this study, we investigated the sterilization efficacy of hydrogen peroxide gas plasma sterilizer with porous polyurethane sample. The result is suggested that hydrogen peroxide gas plasma can be applicable to the sterilization of polymer scaffold for tissue engineering materials.

scholarly journals Assessment of the possibility of surgical masks re-use after a sterilization process in the pandemic condition of COVID-19

2021 ◽  
pp. 004051752110428
Author(s):  
Malgorzata Zimniewska ◽  
Henryk Witmanowski ◽  
Anna Kicinska-Jakubowska ◽  
Arkadiusz Jundzill ◽  
Edyta Kwiatkowska ◽  
...  
Keyword(s):  
Air Permeability ◽  
Waste Generation ◽  
Steam Sterilization ◽  
Plasma Sterilization ◽  
Medical Centers ◽  
Waste Production ◽  
Surgical Masks ◽  
Cover Ratio ◽  
Mechanical Ability ◽  
Sterilization Process

The aim of this study was to explore the possibility to re-use disposable masks in order to prevent excessive waste generation during the pandemic period. The COVID-19 pandemic has caused rapidly increasing waste production resulting from the necessity of common usage of disposable personal protective equipment. This research covers the evaluation of the structure of surgical masks subjected to a threefold steam, gas or plasma sterilization process in order to verify the possibility of their re-use. The results of the study showed that gas sterilization even after three cycles did not cause significant changes in mask structure or air permeability. Hydrogen peroxide plasma sterilization caused significant changes in the structure of layer A after the third cycle of sterilization; nonetheless, it did not influence the air permeability of the mask. A significant reduction in the cover ratio of layers composing surgical masks causes an increase of air permeability in the case of steam sterilization, leading to a reduction of the mechanical ability to prevent the penetration of microorganisms. The reduction in cover ratio limits the filtration efficiency. Surgical masks subjected to threefold gas sterilization can be recommended for re-use. This allows one to use the mask thrice, ensuring safety for users and limiting the mask-waste production to one-third of the volume compared with when the mask is used once. The volume of mask-waste can be reduced with the application of the sterilization process for used masks during the pandemic period. Currently, it is not possible to sterilize all one-use masks, but implementation of this method in hospitals and medical centers is a step in the pro-environmental direction.

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