Differences in Penetration Force of Intravenous Catheters : Effect of Grinding Methods on Inner Needles of Intravenous Catheters
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概要
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Objectives: To compare penetration forces of intravenous catheters based on two grinding methods used for the inner needle tip. Method: Forty intravenous catheters were divided into two groups according to two inner needle grinding methods: Lancet and Backcut. To compare the characteristics of inner needles, 18 gauge Surflo^<[〇!R]> outer catheters, were attached to all inner needles. We measured penetration forces by attaching a "Push-Pull-Gauge" to the chamber of intravenous catheters, then we penetrated intravenous catheters through a 0.04-mm thick polyethylene film. The penetration velocity was 3.3mm/sec. we measured penetration forces at 30- and 45-degree penetration angles. Results: There was no significant difference in the penetration forces of inner needle and outer catheter between the two groups at the 45-degree penetration angle. Penetration forces of the inner needle and the outer catheter in the Backcut group was significantly lower than those of the Lancet group at the 30-degree penetration angle. The penetration force of the outer catheter was reduced from 0.3 N to 0.18 N, a 40% reduction at 30-degree penetration angle. Computerized measurements of penetration holes indicate that the Y-shaped incision mark of the Backcut leaves larger incision hole than the actual puncture size. We hypothesize that the Y-shaped incision mark creates more efficient path for the outer catheter to advance. Therefore, lower penetration force was indicated compared to the other group. Conclusion: Backcut shows less penetration force of inner needles of peripheral intravenous catheters than lancet.
- 東海大学の論文
著者
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Suzuki Toshiyasu
Department of Anesthesiology, Tokai University School of Medicine
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Tanaka Akira
Department of Health and Nutrition, College of Human and Environmental Studies, Kanto-Gakuin Univers
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Oda Masatoshi
Unisis Corporation
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Takahashi M
Tokai Univ. School Of Medicine
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KANAZAWA Masahiro
Department of Anesthesiology, Tokai University School of Medicine
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Kanazawa Masahiro
Department Of Anesthesiology Tokai University School Of Medicine
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Suzuki T
Department Of Ophthalmology Tokai University School Of Medicine
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Takahashi M
Department Of Otolaryngology Tokai University School Of Medicine
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FUKUYAMA Haruo
Department of Anesthesiology, School of Medicine, Tokai University
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NISHIYAMA Junichi
Department of Anesthesiology, School of Medicine, Tokai University
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TAKAHASHI Miwa
Unisis Corporation
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Suzuki Toshiyasu
Dep. Of Anesthesiology Div. Of Basic Medical Sci. And Molecular Medicine Tokai Univ. School Of Medic
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Takiguchi M
Unisis Corporation
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Fukuyama H
Department Of Anesthesiology Tokai University School Of Medicine
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Fukuyama Haruo
Department Of Anesthesiology Tokai University School Of Medicine
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Suzuki Toshiyasu
Department Of Anesthesiology Discipline Of Surgery Tokai University School Of Medicine
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Kanazawa Masahiro
Dep. Of Anesthesiology Div. Of Basic Medical Sci. And Molecular Medicine Tokai Univ. School Of Medic
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Nishiyama J
Department Of Anesthesiology School Of Medicine Tokai University
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Tanaka Akira
Department Of Diagnostic Pathology Jichi Medical University
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Nishiyama Junichi
Department Of Anesthesiology Tokai University School Of Medicine
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TANAKA Akira
Department of Agricultural Chemistry, Faculty of Agriculture, Tohoku University
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