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An anthropomorphic sonography phantom for the evaluation of mechatronic devices for heart surgery

  • Werner Korb EMAIL logo , Christopher Fricke , Stephan Jacobs and Volkmar Falk
Published/Copyright: April 14, 2015

Abstract

Surgical assistance systems are used to make surgical procedures more precise. The integration of automated intra-operative imaging in surgical interventions can be seen as an important step to further improve patient safety. An automatic soft tissue manipulation system with mechatronic assistance using endoscopic Doppler guidance was developed for minimally invasive coronary artery bypass surgery. To facilitate the complicated development process of the mechatronic system, we manufactured and validated an anthropomorphic phantom. A three-compartment model including soft tissue and a vessel system were manufactured for the phantom. Blood flow simulation was implemented using a pump and blood mimicking fluid in a closed circuit. Eighteen physicians evaluated the anatomical and physiological validity of the phantom in a study. The average rating of the anatomy, as well as the physiology, was good, although particular aspects of the phantom have shown a need for improvement. The validation study provided valuable information on limits and problems concerning the phantom and its applicability for the evaluation of the development steps of the mechatronic system. We showed how to develop and validate a phantom for the evaluation of a surgical assistance system with intraoperative imaging. The described concepts can be applied to similar developmental procedures and help generate a goal-driven and efficient development.


Corresponding author: Werner Korb, Innovative Surgical Training Technologies (ISTT), University of Applied Sciences Leipzig (HTWK Leipzig), Eilenburger Str. 13, 04317 Leipzig, Germany, Phone: +49-341-30763101, Fax: +49-341-3076851161, E-mail:
aThese authors contributed equally to this work.

Acknowledgments

This project was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) within the grants FA 448/1-1, KO 3554/1-1 and OR 196/1-1. The project was partly performed within the Innovation Center Computer Assisted Surgery (ICCAS) at the Universität Leipzig, the Institute for Robotics and Mechatronics at the German Aerospace Center (DLR) and the Heart Center Leipzig (Herzzentrum der Universität Leipzig).

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Received: 2014-8-27
Accepted: 2015-3-2
Published Online: 2015-4-14
Published in Print: 2015-12-1

©2015 by De Gruyter

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