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Updated: Feb 9, 2026

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Evaluating Skilled Prehension in Mice Using an Auto-Trainer
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Development of a Skill Evaluation System for the Camera Assistant Using an Infant-Sized Laparoscopic Box Trainer
Tetsuya Ishimaru1,2, Kyoichi Deie1, Tomoya Sakai3
11 Department of Pediatric Surgery, The University of Tokyo Hospital , Tokyo, Japan .
Summary
A new training system was developed to assess camera assistant (CA) skills in pediatric endoscopic surgery. Residents showed longer completion times for marker capturing, indicating a need for targeted CA training.
Area of Science:
- Surgical Education
- Minimally Invasive Surgery
- Medical Simulation
Background:
- Effective camera assistance is crucial for successful pediatric endoscopic surgery.
- Current training methods for camera assistants (CAs) may not adequately prepare them for surgical demands.
- Objective evaluation of CA performance is needed to identify skill gaps.
Purpose of the Study:
- To develop and evaluate a novel training system for camera assistants (CAs) in pediatric endoscopic surgery.
- To assess the performance of participants, including surgical residents, using the developed training system.
Main Methods:
- Expert surgeons identified essential CA skills via questionnaire.
- An infant-sized box trainer with visual targets was created for simulated tasks.
- Participants performed marker capturing and line-tracing tasks with a 5-mm 30° endoscope; performance was timed and evaluated via questionnaire.
Main Results:
- Expert consensus highlighted the importance of maintaining a horizontal view (4.5/5) and centering targets (4.5/5).
- Surgical residents demonstrated significantly longer marker capturing times (244s vs. 124s) compared to non-residents (P=.04).
- Line-tracing tasks were perceived as more difficult (3.7/5) than marker-capturing tasks (2.9/5) by participants.
Conclusions:
- Proficiency in camera manipulation and understanding surgical procedures are vital for effective camera assistance.
- Skill disparities exist between resident and non-resident groups, even in basic simulated tasks.
- The developed training system effectively differentiates performance levels and highlights areas for targeted CA skill development.
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