An experimental study on the utility of a 3-mm ultrasonically activated trocar system

Masaki Nio, Tomohiro Ishii, Shintaro Amae, Motoshi Wada, Kotaro Nishi, Yutaka Hayashi

Research output: Contribution to journalArticlepeer-review

Abstract

Background/Purpose A prototype of a 3-mm ultrasonically activated trocar system supplied by Olympus Corporation was evaluated experimentally in terms of its utility and safety. Methods Three piglets with an average weight of 12 kg were used. A pneumoperitoneum was created by Hasson's technique. Eleven punctures were made with a disposable conical 3-mm trocar (CT), 9 punctures with a 3-mm radially expanding trocar (ET), and 13 punctures with a 3-mm ultrasonically activated trocar (UT) under laparoscopic control. The authors recorded the time for abdominal penetration, the severity of the peritoneal tenting, the presence of elevated abdominal pressure of 5 mm Hg or more at the penetration, and the maximal force applied to the trocar to remove from the abdominal wall. Results The average times for penetration were 11.8, 9.4, and 3.8 seconds with CT, ET, and UT, respectively (P < .05, CT v. UT, ET v. UT). The average maximal forces at the trocar removal were 10.52, 21.17, and 21.24 N with CT, ET, and UT, respectively (P < .05, CT v. ET, CT v. UT). Elevation of abdominal pressure of 5 mm Hg or more was recorded in CT and ET but not in UT. Peritoneal tenting was the most severe in ET and minimal in UT. No complication related to the UT system was found. Conclusions The 3-mm UT is a simple and safe device and is expected to become commercially available.

Original languageEnglish
Pages (from-to)1842-1844
Number of pages3
JournalJournal of Pediatric Surgery
Volume39
Issue number12
DOIs
Publication statusPublished - 2004 Dec

Keywords

  • Laparoscopy
  • trocar
  • trocar complication
  • ultrasonic devices
  • ultrasound scan

ASJC Scopus subject areas

  • Surgery
  • Pediatrics, Perinatology, and Child Health

Fingerprint Dive into the research topics of 'An experimental study on the utility of a 3-mm ultrasonically activated trocar system'. Together they form a unique fingerprint.

Cite this