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Technical Brief

Transcatheter Endovascular Aortic Repair1

[+] Author and Article Information
Michael Tradewell

Medical School,
University of Minnesota,
Minneapolis, MN 55455

Jaron Olsoe, Bret Andersen

College of Science and Engineering,
University of Minnesota,
Minneapolis, MN 55455

Ashish Singal

Biomedical Engineering,
University of Minnesota,
Minneapolis, MN 55455;
Department of Surgery,
University of Minnesota,
Minneapolis, MN 55455;
Medical Devices Center,
University of Minnesota,
Minneapolis, MN 55455;
Cardiovascular Division,
University of Minnesota,
Minneapolis, MN 55455

Rumi Faizer

Department of Surgery,
University of Minnesota,
Minneapolis, MN 55455;
Division of Vascular Surgery,
University of Minnesota,
Minneapolis, MN 55455

DOI: 10.1115/1.4033785Manuscript received March 1, 2016; final manuscript received March 17, 2016; published online August 1, 2016. Editor: William Durfee.

J. Med. Devices 10(3), 030908 (Aug 01, 2016) (2 pages) Paper No: MED-16-1103; doi: 10.1115/1.4033785 History: Received March 01, 2016; Revised March 17, 2016

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Figures

Grahic Jump Location
Fig. 1

Illustration of true lumen (TL) and FL of the dissected human aorta cross-sectional view: tissue section (a) and CT (b). The aortic dissection flap is the tissue separating the lumens.

Grahic Jump Location
Fig. 2

Conceptual prototype of the proposed transcatheter dissection flap resection device collapsed within the distal end of a 21Fr catheter (a) and deployed with exposed CE across the dissection flap (dotted line) (b)

Grahic Jump Location
Fig. 3

CAD images of an aortic dissection with the resection device in situ. (a) Solid model spanning from aortic valve to superior mesenteric artery. (b) Aortic wall is removed to reveal the TL and the resection device with deployed proximal disk. (c) Inferior view of the model showing the device within the TL and the FL. (d) Illustration of the deployed device, with proximal and distal disks across the dissection flap.

Grahic Jump Location
Fig. 4

RF cutting testing on samples of swine thoracic aorta. (a) Pulsed RF mode created shallow cuts where depth of the desired cut could be controlled by adjusting system settings. (b) Continuous RF mode where complete aortic wall transection was achieved.

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