Comparison of wounds created by non-bladed trocars and pyramidal tip trocars in the pig.

Wounds made by the Endopath nonbladed obturator, the Step trocar, and conventional pyramidal tip trocars were compared. The endopath nonbladed obturator and the Step trocar made wounds by separating tissue fibers, whereas the pyramidal tip trocar cut tissue fibers. The wounds of the Endopath nonbladed obturator and the Step trocar were similar in length but were narrower than wounds made by the pyramidal tip trocar. Further studies are needed to determine whether the wounds made by the Endopath nonbladed obturator and the Step trocar will have fewer complications than conventional pyramidal tip trocars.