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http://dx.doi.org/10.3795/KSME-B.2011.35.11.1191

Blood Flow and Pressure Evaluation for a Pulsatile Conduit-Shaped Ventricular Assist Device with Structural Characteristic of Conduit Shape  

Kang, Seong-Min (School of Mechanical and Biomedical Engineering, Kangwon Nat'l Univ.)
Choi, Seong-Wook (School of Mechanical and Biomedical Engineering, Kangwon Nat'l Univ. / Medical & Bio-Material Research Center, Kangwon Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.11, 2011 , pp. 1191-1198 More about this Journal
Abstract
The use of a ventricular assist device (VAD) can raise the one-year survival rate without cardiac transplantation from 25% to 52%. However, malfunction of the VAD system causes 6% of VAD patients' deaths, which could possibly be avoided through the development of new VADs in which VAD malfunctions do not affect the patient's heart movement or hemodynamic state. A conventional VAD has an impeller or vane for propelling blood that can allow blood to regurgitate when the propelling force is weaker than the aortic pressure. In this paper, we developed a new pulsatile conduit-shaped VAD that has two valves. This device removes the possibility of blood regurgitation and has a small stationary area even when the pumping force is extremely weak. We estimated the characteristics of the device by measuring the outflow and the pressure of the pump in in-vitro and in-vivo experiments.
Keywords
Pulsatile Ventricular Assist Device; Mock Circulatory System;
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