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Technical Brief

Cardiovascular Catheter with an Expandable Origami Structure

[+] Author and Article Information
Austin J. Taylor

The University of Georgia, Athens, GA 30602
ajtaylor127@gmail.com

Yue Chen

The University of Georgia, Athens, GA 30602
ychen@uga.edu

Mable Fok

The University of Georgia, Athens, GA 30602
mfok@uga.edu

Adam Berman

Augusta University, Augusta, GA 30912
aberman@augusta.edu

Kent Nilsson

Athens Regional Medical Center, Augusta University-University of Georgia Medical Partnership, GA 30606
nilsson@uga.edu

Zion Tse

The University of Georgia, Athens, GA 30602
ziontse@uga.edu

1Corresponding author.

ASME doi:10.1115/1.4036581 History: Received September 09, 2016; Revised March 27, 2017

Abstract

Interventional catheter ablation treatment is a non-invasive approach for normalizing heart rhythm in patients with arrhythmia. Catheter ablation can be assisted with magnetic resonance imaging (MRI) to provide high-contrast images of the heart vasculature for diagnostic and intra-procedural purposes. Typical MRI images are captured using surface imaging coils which are external to the tissue being imaged. The image quality and the scanning time required for producing an image are directly correlated to the distance between the tissue being imaged and the imaging coil. The objective of this work is to minimize the spatial distance between the target tissue and the imaging coil by placing the imaging coil directly inside the heart through the use of an expandable origami catheter structure. In this study, geometrical analysis is utilized to optimize the size and shape of the origami structure and MRI scans are taken to confirm the MRI compatibility of the structure. The origami expandable mechanism could also be applied to other medical device designs that require expandable structures.

Copyright (c) 2017 by ASME
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