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Construct Validity of a Novel Assessment System for Laparoscopic Suture Accuracy Based on Stereoscopy
Song Xu1, Yiran Chen1,2, Na Luo1,2
1Department of Urology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, 430071, Hubei Province, China.
World Journal of Surgery
|March 2, 2023
Summary
The Suture Accuracy Testing System (SATS) shows validity in assessing laparoscopic suturing skills. Surgical robots improve accuracy, potentially bridging the experience gap between experts and novices.
Area of Science:
- Surgical simulation and training
- Medical device development
- Minimally invasive surgery assessment
Background:
- Lack of objective tools for laparoscopic suture accuracy assessment in training.
- Development of the Suture Accuracy Testing System (SATS).
Purpose of the Study:
- To determine the construct validity of the SATS.
- To evaluate suture accuracy across different surgical tools.
Main Methods:
- Recruited 20 laparoscopic experts and 20 novices.
- Participants performed suturing tasks using traditional instruments, a multi-degree-of-freedom (MDoF) instrument, and a surgical robot.
- SATS measured needle entry and exit errors.
Main Results:
- No significant difference in needle entry errors across groups and tools.
- Novices had significantly higher needle exit errors than experts with traditional and MDoF instruments.
- No significant difference in needle exit errors between novices and experts using the surgical robot.
Conclusions:
- SATS demonstrates construct validity for laparoscopic suture accuracy.
- Laparoscopic surgical skills are transferable to MDoF instruments.
- Surgical robots enhance suture accuracy and may reduce the experience gap in basic surgical tasks.
