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Biaxial sensing suture breakage warning system for robotic surgery
Yuan Dai1,2, A Abiri2,3, J Pensa2,3
1Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA.
Biomedical Microdevices
|January 12, 2019
Summary
This study introduces a novel robotic surgery system with haptic feedback to prevent suture breakage. The system significantly reduced suture failures and improved knot tying consistency in novice surgeons.
Area of Science:
- Robotics
- Surgical Technology
- Biomechanics
Background:
- Robotic surgery procedures are increasing globally.
- Lack of haptic feedback in robotic surgery necessitates reliance on visual cues, increasing risk of suture breakage.
- Excessive applied force during suturing can lead to suture failure.
Purpose of the Study:
- To develop and validate a novel grasper-integrated system with biaxial shear sensing and haptic feedback.
- To mitigate suture breakage during robotic surgery by warning operators of anticipated failure.
- To assess the system's impact on suture manipulation efficacy and knot quality.
Main Methods:
- Integrated biaxial shear sensors with a da Vinci robotic surgical system.
- Novice subjects (n=17) performed knot-tying tasks with and without the Haptic Feedback System (HFS).
- Measured suture failures, applied force, and knot quality (tightness, standard deviation).
Main Results:
- The biaxial shear sensing system reduced suture failure incidence by 59% (p=0.0371).
- Average applied force decreased by 25% with HFS enabled (p=0.00034).
- A 55% decrease in the standard deviation of knot quality was observed with HFS, indicating improved consistency.
Conclusions:
- The developed system effectively warns operators of impending suture breakage.
- This haptic feedback system improves consistency in knot tying and reduces suture failure rates.
- The system enhances outcomes for knot-tying tasks in robotic surgery without degrading knot quality.
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