A comparison of the relative risk of vessel injury with conical versus pyramidal laparoscopic trocars in a rabbit model

American Journal of Obstetrics and Gynecology
William W HurdM T Schemmel

Abstract

Our purpose was to compare the relative risk of vessel injury after use of a 5 mm conical-tipped trocar, a 5 mm pyramidal-tipped trocar, and a 10 mm pyramidal-tipped trocar in a rabbit vessel model. Plastic templates were placed in front of and behind 108 mesenteric vessels in 11 anesthetized New Zealand White rabbits. Laparoscopic trocars were inserted through the templates and mesentery. The incidence of vessel injury was determined at distances from the vessels ranging from 0 to 5 mm. The 5 mm conical trocar resulted in a vessel injury rate of 88% at 0 mm from the vessel but 0% at 1 or 2 mm. The 5 mm pyramidal trocar resulted in 100%, 88%, and 62% injury rates of 0, 1, and 2 mm from the vessels, respectively. The 10 mm pyramidal trocar resulted in a 100% injury rate at 0, 1, 2, or 3 mm from the vessels and 80% and 40% at 4 mm and 5mm, respectively. The relative risk of vessel injury is significantly increased by the use of pyramidal-tipped trocars when compared with conical-tipped trocars, especially if larger diameter trocars are used.

References

Sep 1, 1994·American Journal of Obstetrics and Gynecology·W W HurdJ S Newman
Oct 1, 1993·Obstetrics and Gynecology·W W HurdR O Bude

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Citations

Jul 10, 2003·Fertility and Sterility·William W HurdJean A Hurteau
Sep 27, 2000·Obstetrics and Gynecology·D R DavisW W Hurd
Apr 18, 2002·The Journal of the American Association of Gynecologic Laparoscopists·Roy MashiachAmir Szold
May 22, 1998·The Journal of the American Association of Gynecologic Laparoscopists·A M Ternamian
Aug 2, 2002·Current Opinion in Obstetrics & Gynecology·Malcolm G Munro
Jun 15, 2011·Current Opinion in Obstetrics & Gynecology·Christine Deguara, Colin Davis
Nov 30, 2006·World Journal of Gastroenterology : WJG·Girolamo GeraciGiuseppe Modica

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