HAND INSTRUMENT PERFORMANCE IN A SINGLE SITE SURGERY SIMULATOR WITH NOVICES

摘要

Laparoendoscopic single-site surgery (LESS) is a new minimally invasive surgical technique thatpresents physical and mental challenges to surgeons. Currently, LESS procedures are commonlyperformed using surgical instruments designed for traditional multi-incision laparoscopic surgery.A pilot study was conducted to determine which laparoscopic instruments were the most efficientfor LESS procedures. In a LESS surgical trainer, 24 novice users completed a simple surgicaltask using standard (non-articulating) straight laparoscopic graspers and two different articulatinginstruments. Task performance was scored based on completion time and the number of errors.Analyses showed that the use of the simpler straight instruments produced significantly fastertimes (p = 0.004 and p = 0.014) and higher task scores (p = 0.005 and p = 0.021) than thearticulating instruments. These results suggest that standard laparoscopic hand instruments enablebetter novice performance for a basic LESS task.