 |
 |
Search | |
Vol.33 No.3 contents | Japanese/English |
 |
Full Text of PDF (1,381K) Article in Japanese |
Bacterial Contamination Tests and Bacterial Residual Tests of Needleless Connector Stopcocks for Intravenous Lines
Masaki KAIBORI1)2), Kengo YOSHII3), Kosuke MATSUI2) and Morihiko ISHIZAKI2)
1)Next-Generation Minimally Invasive Surgery, Kansai Medical University, 2)Department of Surgery, Hirakata Hospital, Kansai Medical University, 3)Department of Mathematics and Statistics in Medical Sciences, Kyoto Prefectural University of Medicine
Several types of needleless, three-way connector stopcocks are used in Japan. We performed bacterial contamination and disinfection tests on six of them to determine the surfaces that are most easily contaminated. Six three-way stopcocks (products A to F) that are used in clinical practice in Japan were evaluated. Bacterial contamination and disinfectivity tests were conducted on each of these needleless connectors. The rubber valve material at the point of syringe insertion was isoprene in stopcocks A and B and silicone in stopcocks C-F. Split-septum-type needles were used for stopcocks A-D and mechanical needles for stopcocks E and F. We conducted the bacterial contamination test in two stages. The first-stage test was positive in stopcocks C and D. The other four tested negative. Stopcocks C and D also had positive disinfection tests. During the second stage, stopcock E was not testable by the bacterial contamination test, whereas stopcock F had a positive test. Stopcocks E and F had positive disinfection tests. Stopcocks A and B had negative bacterial contamination and disinfectant tests during both the first and second stages of our trial. The results of the bacterial contamination disinfection test suggest that the rubber valve material of the syringe insertion part (isoprene) and the needle part that has a split-septum design were most effective for avoiding an infected surface.
Key words：needleless connector three-way stopcock, bacterial contamination test, disinfection test
e-mail: kaibori＠hirakata.kmu.ac.jp
Received: June 22, 2017
Accepted: February 13, 2018
33 (3)：94─102,2018
 |
| Copyright © 2003 Japanese Society for Infection Prevention and Control All rights reserved. |