• Image-based Optical Miniaturized Three-Axis Force Sensor for Cardiac Catheterization

Noh, Yohan, Liu, Hongbin, Sareh, Sina, Chathuranga, Damith Suresh, Wurdemann, Helge, Rhode, Kawal and Althoefer, Kaspar, 2016, Journal Article, Image-based Optical Miniaturized Three-Axis Force Sensor for Cardiac Catheterization IEEE Sensors Journal, 16 (22). 7924 -7932. ISSN 1530-437X

Abstract or Description:

In order to determine the cause of and to treat an abnormal heart rhythm, electrophysiological studies and ablation procedures of the heart, sensorized catheters are required. During catheterization, force sensors at the tip of the catheter are essential to provide quantitative information on the interacting force between the catheter tip and the heart tissue. In this study, we are proposing a small sized, robust, and low-cost three-axis force sensor for the catheter tip. The miniaturized force sensor uses fiber-optic technology (small sized multi-cores optical fiber and a CCD camera) based on image processing to read out the forces by measuring light intensity which are modulated as a function of the applied force. In addition, image processing techniques and a Kalman filter are used to reduce the noise of the light intensity signals. In this paper, we explain the design and fabrication of our three-axis force sensor and our approach for reducing noise levels by applying a Kalman filter model, and finally discuss the calibration procedure. Moreover, we provide an assessment of the performance of the proposed sensor.

Official URL: http://ieeexplore.ieee.org/document/7544487/
Subjects: Other > Engineering > H600 Electronic and Electrical Engineering > H670 Robotics and Cybernetics > H671 Robotics
School or Centre: School of Design
Identification Number or DOI: 10.1109/JSEN.2016.2600671
Date Deposited: 03 Mar 2018 15:00
Last Modified: 05 Mar 2018 11:08
URI: http://researchonline.rca.ac.uk/id/eprint/3219

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