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- ISHIDA Mamoru
- Department of Neurosurgery, Nagoya University Graduate School of Medicine Department of Neurosurgery, Yokkaichi Municipal Hospital
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- IZUMI Takashi
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- ARAKI Yoshio
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- NISHIHORI Masahiro
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- YOKOYAMA Kinya
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- UDA Kenji
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- TSUKADA Tetsuya
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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- WAKABAYASHI Toshihiko
- Department of Neurosurgery, Nagoya University Graduate School of Medicine
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抄録
<p>The straightening phenomenon is known as a cause of catheter kickback in the late phase of coil embolization. The mechanism is supposed to be the relative shortage of the stretch resistance (SR) line, and it occurs when a coil is folded too small. Among many SR coils available, there should be a coil-specific tendency to cause this phenomenon. Here, we conducted an in-vitro experiment to know which coil is the most resistant to the straightening phenomenon. We developed an experimental model to reproduce the straightening phenomenon. Five different coils (Axium Prime, ED Coil, Hypersoft, SMART Coil, and Target 360 nano) of the same size (3 mm × 6 cm) were investigated for five times each. Resistance to the straightening phenomenon, which is represented by the insertion length at the onset of the phenomenon, was compared among coil types. The straightening phenomenon was successfully observed in all insertions. Insertion lengths were significantly different among coil types (p = 0.013). The insertion length of ED was the longest (mean ± SD, 27.0 ± 8.3 mm), which means the most resistant to the phenomenon. Axium was second (21.6 ± 7.0 mm), followed by Target (15.8 ± 6.9 mm), Hypersoft (13.8 ± 5.8 mm), and SMART (12.4 ± 4.7 mm). Difference between ED and Hypersoft (p = 0.037) and difference between ED and Smart (p = 0.018) were significant. ED coil was the one with the most resistance to the straightening phenomenon. Selecting the optimal coil is the key to avoid the phenomenon.</p>
収録刊行物
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- Neurologia medico-chirurgica
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Neurologia medico-chirurgica 61 (6), 356-360, 2021
一般社団法人 日本脳神経外科学会