Consideration of Tuohy needle tip

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  • UEHARA Keiji
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • IWASAKI Shohei
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • MORIMOTO Masahiro
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • MATSUSHIMA Mayuka
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • MINAMI Nahoko
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • SHIRAI Toru
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • MORIMOTO Etsuji
    Department of Anesthesiology, Kinki University Faculty of Medicine
  • NAKAO Shinichi
    Department of Anesthesiology, Kinki University Faculty of Medicine

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Other Title
  • Tuohy針先端処理の違いによる合併症低減の可能性
  • Tuohy ハリセンタン ショリ ノ チガイ ニ ヨル ガッペイショウ テイゲン ノ カノウセイ

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Description

An epidural nerve block is widely and often effectively used for treating pains. However, it has risks of severe complications, such as epidural hematoma and nerve injuries. Because a blind puncture is generally employed, it is impossible to grasp the relative arrangement of the needle tip, blood vessels, and nerves. However, use of a dull-ended Tuohy needle (dull needle) can reduce tissue damage caused by a sharp needle point. Moreover, puncture resistance increases, which may relay the sensation much more clearly when the ligament is pierced. Therefore we used conventional Tuohy needles and dull needles for epidural block cases to compare the presence of piercing sensation, puncture frequency, level of bleeding, and presence of pain at the insertion. As a result, in the dull needle group significantly many cases were recognized to have the piercing sensation, and significantly few cases of bleeding needed compression at the puncture site. It is suggested that use of the dull needle may reduce the risk of complications.

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