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A "Smart" Force-Limiting Instrument for Microsurgery: Laboratory and In Vivo Validation
Hani J Marcus1,2, Christopher J Payne1, Ahilan Kailaya-Vasa3
1The Hamlyn Centre, Institute of Global Health Innovation, Imperial College London, London, United Kingdom.
Plos One
|September 14, 2016
Summary
A new "smart" force-limiting instrument provides vibrotactile feedback to surgeons, significantly reducing excessive force during microsurgery. This innovation enhances novice skill acquisition and may improve patient safety in delicate procedures.
Area of Science:
- Surgical Technology
- Biomechanics
- Medical Training
Background:
- Microsurgical training demands proficiency in delicate tissue handling.
- Excessive force application is a common risk in microsurgery.
- A novel instrument offers vibrotactile feedback to limit applied force.
Purpose of the Study:
- To validate a "smart" force-limiting instrument for microsurgical applications.
- To assess the instrument's efficacy in reducing excessive force exertion.
- To evaluate the impact on surgical workflow and skill acquisition.
Main Methods:
- Laboratory experiment with novice surgeons comparing force-limiting and standard instruments.
- In vivo experiment with an intermediate surgeon using both instruments.
- Objective measures included forces exerted and Objective Structured Assessment of Technical Skills (OSATS) scores.
Main Results:
- Novice surgeons using the force-limiting instrument exerted significantly less maximal force (0.637N vs. 4.576N, p=0.007).
- In vivo, maximal forces were significantly lower with the force-limiting instrument (0.441N vs. 0.742N, p<0.001).
- The instrument did not significantly impede surgical workflow (OSATS scores, p>0.1).
Conclusions:
- The force-limiting instrument effectively reduces excessive force in microsurgery.
- It aids in training novice surgeons to apply appropriate force levels.
- Clinical implementation of this technology holds potential for enhancing patient safety.
