Equipment of operating theater is very important, especially in endoscopic surgery. It is well known that location of image display was influencing perceptual processing and endoscopic manipulation. The aim of this study is to evaluate whether difficulties of task performances in endoscopic surgery will be changed or not by scope position.
METHODS AND PROCEDURES:
The expert surgeon (who has experiences more than 300 laparoscopic colorectal surgeries) of endoscopic surgery participated in this study. Hiroshima University Endoscopic Surgical Assessment Device (HUESAD) which analyzes the direction-dependent dexterity for an objective assessment was used on this examine. We previously reported that HUESAD was able to track the movements of the tip of endoscopic instrument precisely while participants were doing some tasks on the experimental table. The distance from fulcrum to the tip of endoscopic instrument by optical sensor and micro encoder, and time taken were recorded. This system shows the orbits of the tip of the instrument. The task 1 to place the tip of the endoscopic instrument on the top of these poles from the proximal to distal side pole, and then returned from distal to proximal. And this task was performed under two scope positions which were set up at 0°and 90°of misalignment to the participant’s left side. The task 2 was to place the tip of the endoscopic instrument on the top of these poles from the proximal to distal side pole, and then returned from distal to proximal, and from the left to right side pole, and then returned from right to left under one condition that scope was fixed at 90°of misalignment to the participant’s left side
Analyzed data of the task 1 showed that the 0°position required significantly shorter execution time and significantly smaller deviation than those of the 90°misalignment position (p
Program Number: P229