Avoidance of obstruction of suction system for application of pulsed water jet device

Motohiko Sato, Atsuhiro Nakagawa, Takahiro Matsuzaki, Hideki Kojima, Kazuaki Uchida, Takeshi Seto, Atsushi Nakayashiki, Toshiki Endo, Tomohiro Kawaguchi, Teiji Tominaga

Research output: Contribution to journalComment/debatepeer-review


Object. Pulsed water jet surgical instrumentation is intended to achieve both maximal lesion resection and functional maintenance through preservation of fine vessels and minimal surrounding damage. On the other hands, improving usability and avoiding obstruction of suction system is critical. The present study evaluated the mechanism of suction obstruction and investigated the method to control it. Methods. This system consisted of a pump chamber driven by a piezo actuator, a stainless steel tube, and a nozzle. The water was supplied at 4 ml/min at energy of 20V. The relationship between additional water supply (0-25 ml/min), internal diameter of suction tube, suction pressure (10-80 kPa), material property of fluid and the frequency of obstruction using brain phantom. Visualization and pressure measurement were also performed to elucidate the mechanism of obstruction. Results. Additional water supply, suction pressure, internal diameter, and material property of fluid significantly related with the frequency of obstruction.

Original languageEnglish
Pages (from-to)O-61-O-62
JournalTransactions of Japanese Society for Medical and Biological Engineering
Publication statusPublished - 2014 Aug 17


  • Medical engineering
  • Minimally invasive surgery
  • Surgical instrument
  • Translational research

ASJC Scopus subject areas

  • Biomedical Engineering


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