Comparison of syringe insertion resistance and connection stability of needleless connectors for IV lines

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  • Kaibori Masaki
    Next-Generation Minimally Invasive Surgery, Hirakata Hospital, Kansai Medical University Department of Surgery, Hirakata Hospital, Kansai Medical University
  • Yoshii Kengo
    Department of Mathematics and Statistics in Medical Sciences, Kyoto Prefectural University of Medicine

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Other Title
  • 静脈ライン用ニードルレスコネクタにおけるシリンジ挿入抵抗および接続確実性の比較検討
  • ジョウミャク ラインヨウ ニードルレスコネクタ ニ オケル シリンジ ソウニュウ テイコウ オヨビ セツゾク カクジツセイ ノ ヒカク ケントウ

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Abstract

<p>Purpose: Several types of major needleless three-way stopcocks are used in Japan. We aimed to compare their usefulness, focusing on insertion resistance of various types of needleless three-way stopcocks, a site at which catheter-related bloodstream infection occurs.</p><p>Subjects and Methods: Six products (products A to F) that are used in clinical practice in Japan were evaluated. The types of needleless sites were split septum in 4 products and mechanical valve in 2 products, while the materials of rubber valves were isoprene rubber in 2 products and silicon rubber in 4 products.</p><p>Results: Insertion resistance and insertion energy of product A, which has a split septum and isoprene rubber, were 1182 ± 21 gf∙mm and 5158 ± 126 gf∙mm, respectively, showing significantly lower values than those of the other types tested. The pressure testing at syringe connection site of the needleless connectors showed that all types had pressure resistance at connection site against a target maximum infusion pressure or over.</p><p>Conclusion: It was suggested that product A, which has a click strength and in which the rubber valves of syringe insertion site are made of isoprene and the needleless site has a split septum, has the least insertion resistance and insertion energy, thereby being easy to use in the clinical practice.</p>

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