[Experiments of contamination with bacteria while transfusion between the newly developed porous polymer plug and by...

We newly developed a transfusion plug that has an air passage of polymer porous material (I Cap). This porous polymer material theoretical does not pass the infectious microorganisms. We experimented contaminations during the transfusions by I Cap and that using air needles. Trypticated soy broth was used for the experiments. Experiments of transfusion in a dusty environment revealed that the transfusions by air needles got 100% contamination and that by I Cap was 0%. The experiments in a clinic room transfusions also revealed that air needle resulted in 30.3% contamination but on the contrary 0% with the I Cap. Dusty air was flown under high pressure (1.5 atmospheric pressure) through the same filter of I Cap for 30 minutes into the trypticated soy broth. These experiments revealed that the filter did not permeate bacteria and that transfusions with air needle was contaminated with dust.