Effect of endoscope flexibility on tissue dissection profile assessed with pulsed water jet device: ensuring safety, efficacy, and handling of thin devices for neuroendoscopic surgery

Tetsuya Kusunoki, Tomohiro Kawaguchi, Atsuhiro Nakagawa, Yuta Noguchi, Shin Ichiro Osawa, Hidenori Endo, Toshiki Endo, Ryuta Saito, Masayuki Kanamori, Kuniyasu Niizuma, Teiji Tominaga

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: We developed an actuator-driven pulsed water jet device (ADPJ) for flexible neuroendoscopy to achieve effective tissue dissection with vasculature preservation. Although flexibility is a strong advantage for minimally invasiveness, the effect of the ductile curvature on the dissection profiles remains unknown. The purpose of this study was to clarify the impact of the curvature change of the ADPJ connecting tube on the dissection safety and efficacy. Results: Three ADPJ connecting tubes with different inner diameters (1.0, 0.75, 0.5 mm) were used to dissect the brain phantom. They were bent at 3 angles: 0°, 60°, and 120°. The dissection profiles were evaluated using the mean depth and coefficient of variation (CV) for efficacy and safety, respectively.The larger inner diameter connecting tube dissected more deeply. The dissection depth was not changed regardless of the curvature degree in each tube. There was no significant difference in CVs regardless of inner diameter and curvature. The ductile curvature of the flexible neuroendoscope did not affect the efficacy and safety of the ADPJ dissection profile. Among the numerous instruments, tube-formed devices, including suction and injecting devices such as ADPJ, can be used safely and effectively without flexibility-related limitations.

Original languageEnglish
Article number64
JournalBMC Research Notes
Volume14
Issue number1
DOIs
Publication statusPublished - 2021 Dec
Externally publishedYes

Keywords

  • Endoscopic surgery
  • Incurvation
  • Minimally invasive surgery
  • Pulsed water jet

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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