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Special Section Technical Briefs

Intracardiac Magnetic Resonance Imaging Catheter With Origami Deployable Mechanisms1

[+] Author and Article Information
Austin Taylor, Matthew Miller, Mable Fok, Zion Tsz Ho Tse

College of Engineering,
The University of Georgia,
Athens, GA 30602

Kent Nilsson

UGA-GRU Medical Partnership,
Athens, GA 30602

DOI: 10.1115/1.4033151Manuscript received March 1, 2016; final manuscript received March 16, 2016; published online May 12, 2016. Editor: William Durfee.

J. Med. Devices 10(2), 020957 (May 12, 2016) (2 pages) Paper No: MED-16-1072; doi: 10.1115/1.4033151 History: Received March 01, 2016; Revised March 16, 2016

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Figures

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Fig. 1

(a) Catheterization access from the femoral vein. (b) Illustration of typical electrophysiology (EP) therapy with catheters in the heart. (c) Catheter tip delivers a burst of high energy waves that cauterize the abnormal areas.

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Fig. 2

(a) Previous expandable intracardiac magnetic resonance imaging (ICMRI) catheter design. (b) New ICMRI catheter with deployable origami structure. (c) Illustration of the flasher fabrication from origami folding, where mountain folds are denoted as solid lines, and valley folds as dashed lines. The design is modified from the Palmer–Shafer origami flasher [3].

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Fig. 3

Origami structure deployed at (a) 0%, (b) 30%, (c) 70%, and (d) 100%

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Fig. 5

(a) LA short-axis ICMRI alone (23) versus (b) ICMRI 1 in vivo array (13) and (c) LV long axis ICMRM. Catheter (top arrow) mounted on EP ablation catheter (bottom arrow).

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Fig. 4

(a) Circuit diagram of the tuning-matching circuit. (b) The resonance frequency of the microcoil tuned to be 127.74 MHz for 3T MRI Larmor frequency.

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