Underwater robotic suturing

Abstract

Background Laparoscopic and robotic surgeries have become popular, and this popularity is increasing. However, the environment in which such surgeries are performed is rarely discussed. Similar to arthrosurgery performed in water, artificial ascites could be a new environment for laparoscopic surgery. This study was performed to determine whether robotic surgery is applicable to complicated suturing underwater. Material and methods A da Vinci Surgical System S was used. A weighted fabric sheet was placed at the bottom of a tank. Identical sets were made for each environment: One tank was dry, and the other was filled with water. The suturing task involved placement of a running silk suture around the perimeter of a small circle. The task was performed eight times in each environment. The task time and integrity score were determined. The integrity score was calculated by evaluating accuracy, tightness, thread damage, and uniformity; each factor was evaluated using a five-point scale. Results Although statistically significant differences were not shown in either task time or integrity score between the underwater and air environments, robotic suturing underwater is not inferior to performance in air. Conclusions The feasibility of robotic suturing underwater was confirmed under the herein-described experimental conditions.

Keywords:

• Saline-filled surgery
• ascites
• robotic surgery
• laparoscopic surgery
• suturing

Acknowledgments

The da Vinci Surgical System S used in the present study was the property of Kanazawa University Hospital. This work was supported by JSPS KAKENHI Grant Number 23659642.

Disclosure of interests

Drs. Kawaguchi, Shimada, Ishikawa, and Watanabe report no financial interests or potential conflicts of interest. The authors alone are responsible for the content and writing of the paper.