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Novel aortic cannula with spiral flow inducing design

Shafii, Nadia S. and Darlis, N. and Dillon, Jeswant and Osman, Kahar and Md Khudzari, Ahmad Zahran and Supriyanto, E. (2014) Novel aortic cannula with spiral flow inducing design. In: Proceedings of the 2014 International Conference on Civil Engineering (CIVILENG 2014), 17-21 July 2014 , Santorini Island, Greece.

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Abstract

Aortic cannula is one of the medical parts used in cardiopulmonary bypass (CPB) during medical operation, or used in conjunction with extracorporeal membrane oxygenator (ECMO) operation during patient support in intensive care unit. The existing stock designs produce jet flow or dispersed flow out of the cannula tip. Thus leading to few complications caused by the non – physiological flow. To reduce adverse effect on the aorta, as well as on red blood cells (RBC), a novel approach to induce spiral flow is proposed. The aim of this study to compare between internal helical curve tip aortic cannula designs comprised of three groove and three ribs, and standard curve tip aortic cannula design. Computational fluid dynamics (CFD) simulation between three cannula designs were carried out in steady state condition. Spiral flow was successfully induced by the proposed internal helical design. The pressure drop across the cannulae designs recorded below the safe limit, outflow velocity was reduced by 34.5%, while wall shear stress was also acceptable (30.8 Pa – 61.59 Pa – 215.6 Pa) which is below critical wall shear stress value.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Spiral flow; aortic cannula design; heart lung machine; internal helical design; computational fluid dynamics
Subjects: R Medicine > RD Surgery
Divisions: Faculty of Engineering Technology > Department of Mechanical Engineering Technology
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 19 Sep 2018 05:42
Last Modified: 19 Sep 2018 05:42
URI: http://eprints.uthm.edu.my/id/eprint/10373
Statistic Details: View Download Statistic

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