/Hybrid position/force control of an active handheld micromanipulator for membrane peeling

Hybrid position/force control of an active handheld micromanipulator for membrane peeling

Trent S. Wells, Sungwook Yang, Robert A. MacLachlan, Louis A. Lobes Jr., Joseph N. Martel and Cameron N. Riviere
Journal Article, International Journal of Medical Robotics and Computer Assisted Surgery, Vol. 12, No. 1, pp. 85-95, March, 2016

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Abstract

BACKGROUND:
Peeling procedures in retinal surgery require micron-scale manipulation and control of sub-tactile forces.

METHODS:
Hybrid position/force control of an actuated handheld microsurgical instrument is presented as a means for simultaneously improving positioning accuracy and reducing forces to prevent avoidable trauma to tissue. The system response was evaluated, and membrane-peeling trials were performed by four test subjects in both artificial and animal models.

RESULTS:
Maximum force was reduced by 56% in both models compared with position control. No statistically significant effect on procedure duration was observed.

CONCLUSIONS:
A hybrid position/force control system has been implemented that successfully attenuates forces and minimizes unwanted excursions during microsurgical procedures such as membrane peeling. Results also suggest that improvements in safety using this technique may be attained without increasing the duration of the procedure.

BibTeX Reference
@article{Riviere-2016-106363,
author = {Trent S. Wells and Sungwook Yang and Robert A. MacLachlan and Louis A. Lobes Jr. and Joseph N. Martel and Cameron N. Riviere},
title = {Hybrid position/force control of an active handheld micromanipulator for membrane peeling},
journal = {International Journal of Medical Robotics and Computer Assisted Surgery},
year = {2016},
month = {March},
volume = {12},
number = {1},
pages = {85-95},
keywords = {accuracy enhancement; force control; microsurgery; tremor compensation},
}
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