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The Patients May Walk on Nanosilver



The bacterium killing floor reduces the risk of hospital-acquired (nosocomial) infections. The hospital of Győr is testing the bacterium killing floor of Graboplast which kills more than 99 percent of the pathogens contacting it in 6 to 8 hours under laboratory conditions according to the tests made by the microbiological institute of the University of Szeged.

According to Zoltán Mészáros, R&D director of Graboplast, nanosilver and natotitanium-dioxide were applied on the PVC floor. The antibacterial effect of the product intended mainly for hospitals, surgeries, homes of the elder, kindergartens, schools, child rooms, buses, sport halls is due to the nanosilver. The silver ions block cell distribution, and stop the metabolism of the enzymes.

Silver that has been used as a steriliser for a long time kills bacilli contacting it. However, the specialists must provide not only for the killing of the pathogens but also for the degradation of the killed bacteria and contaminations. The nanotitanium-dioxide with photocatalytic properties performs this duty in a chemical oxidation process induced by light.

An innovation grand prize was awarded to the product tested under name Silver Knight at Neocon special exhibition in Chicago.

According to Anett Németh, sales and marketing director, 20 thousand square meters of the bacterium killing self-cleaning floor were laid in a Slovakian hospital under construction at the moment. Significant inquiries are indicated from many parts of the world. The marketing director finds: in countries with high hygienic levels, the high requirements and the need for further increase of the risk of infections will lead to the increase of the demand on the floor of Győr that has been patented also abroad.

In the Petz Aladár County Training Hospital of Győr, the specialists have been testing the effect of Silver Knight for two months. Dr. Mária Knausz, clinical microbiologist, head physician in hygiene at the regional health institution calls the attention to the fact that bacteria become more and more resistant to antibiotics. This is why it is important to prevent nosocomial infections as far as possible.

During the clinical trial, the floor is tested at the gastroenterology, paediatric cardiology, the orthopaedia and the X-ray division. The bacterium killing floor was laid in one of the selected patient rooms, and a traditional floor in another one. Samples were taken from both sites which were incubated at 37˚C for two days, subsequently the pathogens were counted and the data compared.

According to the test results, many fewer bacilli can be detected on the special floor. The head physician indicated that the results obtained under laboratory conditions could not be obtained in the operating patient rooms since people come and go in the hospital, new patients arrive, visitors visit their relatives. Dr. Mária Knausz told: in 70 percent of the nosocomial infections, hands are mainly involved, as pathogens are spread through them. However, killing the pathogens on the covers is also important. With the new floor of Graboplast the hospital will not only reduce the costs but will also protect the patients against the cleaning agents, pointed out the head physician.


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