Toward construct validity for a novel sensorized instrument-based minimally invasive surgery simulation system.

Area of Science:

• Surgical Technology
• Medical Simulation
• Robotics in Medicine

Background:

• Minimally invasive surgery (MIS) training faces challenges due to environmental constraints.
• Developing objective metrics for surgical skill assessment is crucial for effective training.

Purpose of the Study:

• To evaluate novel sensorized laparoscopic instruments for their ability to differentiate surgical skill levels.
• To assess the construct validity of force and position data from these instruments in a surgical task.

Main Methods:

• Sensorized laparoscopic instruments with 5 degrees of freedom (DOF) force sensing and 6 DOF position sensing were utilized.
• Novice and expert laparoscopists performed a standardized suturing task using the novel instruments.
• Force and position data profiles were collected and compared between skill groups.

Main Results:

• The sensorized instruments demonstrated construct validity by detecting significant differences between novices and experts.
• Distinct force and position profiles were observed correlating with surgical experience levels during suturing.
• The instruments successfully captured nuanced performance variations in a complex MIS task.

Conclusions:

• The novel sensorized laparoscopic instruments are valid tools for assessing skill in minimally invasive surgical training.
• Force and position sensing capabilities can differentiate between novice and expert performance in laparoscopic suturing.
• Further research is needed to explore predictive performance metrics and enhance surgical education.