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Related Experiment Video

Updated: Jun 24, 2026

Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery

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Published on: November 14, 2015

The trade-off between flexibility and maneuverability: task performance with articulating laparoscopic instruments.

Danny V Martinec¹, Prakash Gatta, Bin Zheng

¹Minimally Invasive Surgery Program, Legacy Health System, 1040 NW 22nd Avenue, Suite 560, Portland, OR 97210, USA.

Surgical Endoscopy

|April 4, 2009

Summary

Articulating laparoscopic instruments offer enhanced flexibility but pose a control challenge. While experts initially performed better with conventional tools, novices showed significant improvement with articulating instruments after a brief orientation, suggesting early training benefits.

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Area of Science:

Minimally Invasive Surgery
Surgical Technology

Background:

Conventional laparoscopic instruments lack the degrees of freedom (DOF) required for complex surgical tasks in confined spaces.
Newer articulating laparoscopic instruments provide enhanced flexibility but may present control challenges due to increased complexity.

Purpose of the Study:

To compare task performance between articulating and conventional laparoscopic instruments.
To evaluate the learning curve and skill transfer for articulating instruments in both expert and novice surgical groups.

Main Methods:

Eight experienced laparoscopic surgeons (experts) and eight individuals with no surgical experience (novices) performed standardized tasks (peg transfer, suturing) using both instrument types.
Performance was assessed using a 100-point scale measuring speed and accuracy.
Participants were retested with articulating instruments after a brief orientation session.

Main Results:

Experts consistently outperformed novices (p < 0.001).
Overall, conventional instruments showed slightly better performance than articulating instruments (p = 0.074) in initial trials.
Novices demonstrated a significantly greater percentage improvement (27%) with articulating instruments after orientation compared to experts (1%).

Conclusions:

Experienced surgeons can effectively transfer their skills to articulating laparoscopic instruments.
Articulating instruments can be introduced early in surgical training to accelerate the learning process and improve proficiency.