Manual robot assisted endoscopic suturing: Time-action analysis in an experimental model

  • J. P. Ruurda
  • I. A. M. J. Broeders
  • B. Pulles
  • F. M. Kappelhof
  • C. van der Werken
Original article

Abstract

Background

Robotic surgery systems were introduced to overcome the disadvantages of endoscopic surgery. The goal of this study was to assess whether robot assistance could support endoscopic surgeons in performing a complex endoscopic task.

Methods

Five experienced endoscopic surgeons performed end-to-end anastomosis on post-mortem porcine small intestine. The procedure was performed both with standard endoscopic techniques and with robotic assistance (da Vinci system, Intuitive Surgical, Sunny vale, CA). It was performed in three different working directions with a horizontal, vertical, and diagonal position of the bowel. Anastomosis time, number of stitches, knots, time per stitch, suture ruptures, and the number of stitch errors were recorded. Also, an action analysis was performed.

Results

Anastomosis time, number of stitches, and the number of knots did not differ significantly between the two groups. The time needed per stitch was significantly shorter with robot assistance (81.4 sec/stitch vs 95.9 sec/stitch, p = 0.005). More suture ruptures occurred in the robot group (0 (0–2) vs 0 (0–0), p = 0.003). In the standard group more stitch errors were found (2 (0–5) vs 0 (0–3), p = 0.017). These results were comparable for three different working directions. The action analysis, however, showed significant benefits of robotic assistance. The benefits were greatest in a vertical bowel position.

Conclusion

Robot assistance might offer added value to experienced endoscopic surgeons in the performance of a small-bowel anastomosis in an experimental setup, even though total anastomosis time could not be demonstrated to be shorter and some suture tears occurred due to the lack of force feedback.

Keywords

Robotics Laparoscopic surgery Anastomosis 

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • J. P. Ruurda
    • 1
  • I. A. M. J. Broeders
    • 1
  • B. Pulles
    • 1
  • F. M. Kappelhof
    • 1
  • C. van der Werken
    • 1
  1. 1.Department of SurgeryUniversity Medical Centre UtrechtUtrechtThe Netherlands

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