Published in:
01-02-2016
Evaluation of the effect of a laparoscopic robotized needle holder on ergonomics and skills
Authors:
Thierry Bensignor, Guillaume Morel, David Reversat, David Fuks, Brice Gayet
Published in:
Surgical Endoscopy
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Issue 2/2016
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Abstract
Background
Laparoscopy generates technical and ergonomics difficulties due to limited degrees of freedom (DOF) of forceps. To reduce this limitation, a new 5-mm robotized needle holder with two intracorporeal DOF, Jaimy®, has been developed. The aim of this study was to evaluate its effects on ergonomics and skills.
Methods
Fourteen surgeons including eight senior and six residents were crossover randomized and stratified based on experience. Three suturing tasks were performed with both Jaimy® and a classic needle holder (NH): task 1: Peg-Board; task 2: hexagonal suture; task 3: frontal suture. Postural ergonomics of the dominant arm were evaluated with an ergonomics score (RULA score) thanks to motion capture, and muscular ergonomics with electromyography of six muscular groups (flexor and extensor carpis, biceps, triceps, deltoid, trapeze). Performance outcomes are a quantitative and qualitative score, and skills outcomes are the measurement of the number of movements and the path length travelled by the instrument.
Results
The RULA score showed a statistically improved posture with Jaimy® (p < 0.001). The cumulative muscular workload (CMW) of four muscles was not different. However, the CMW was in favor of the NH for the flexor carpi ulnaris (p < 0.001) and the triceps (p = 0.027). The number of movements was not different (p = 0.39) although the path length was shorter with Jaimy® (p = 0.012). The score for task 1 was in favor of the NH (p = 0.006) with a higher quantity score. Task 2 score was not different (p = 0.086): The quality part of the score was in favor of Jaimy® (p = 0.009) and the quantity part was higher with the NH (p = 0.04). The score for task 3 was higher with Jaimy® (p = 0.001).
Conclusion
This study suggests that the use of a robotized needle holder improves both posture and the quality of laparoscopic sutures.