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  1. Article

    Open Access

    Effect of counter-pulsation control of a pulsatile left ventricular assist device on working load variations of the native heart

    When using a pulsatile left ventricular assist device (LVAD), it is important to reduce the cardiac load variations of the native heart because severe cardiac load variations can induce ventricular arrhythmia....

    Seong Wook Choi, Kyoung Won Nam, Ki Moo Lim, Eun Bo Shim… in BioMedical Engineering OnLine (2014)

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  2. Article

    Computational analysis of the effect of the type of LVAD flow on coronary perfusion and ventricular afterload

    Ki Moo Lim, In Su Kim, Seong Wook Choi… in The Journal of Physiological Sciences (2009)

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  3. Article

    Computational analysis of the effect of the type of LVAD flow on coronary perfusion and ventricular afterload

    We developed a computational model to investigate the hemodynamic effects of a pulsatile left ventricular assist device (LVAD) on the cardiovascular system. The model consisted of 16 compartments for the cardi...

    Ki Moo Lim, In Su Kim, Seong Wook Choi… in The Journal of Physiological Sciences (2009)

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  4. No Access

    Article

    Durability improvement of polymer chamber of pulsatile extracorporeal life support system in terms of mechanical change

    Twin Pulse Life Support, T-PLS™ has received the CE mark (2003) and Korea Food and Drug Administration (KFDA) approval (2004) for short-term application as an Extracorporeal Life Support system (ECLS). T-PLS’s...

    Hyuk Choi, Seung Hoon Paik, Kwang Ho Lee… in Medical & Biological Engineering & Computi… (2007)

  5. No Access

    Chapter and Conference Paper

    Automatic Regulation of Output of an Electrohydraulic Left Ventricular Assist Device Using the Polymer Bellows Water Pressure and Motor Current

    An electrohydraulically driven left ventricular assist device (LVAD) has been developed in our laboratory. Over years of in vitro and in vivo testing, a “suction” problem has been pointed out as one of the maj...

    Jae-Soon Choi, Yung-Ho Jo, Won-Woo Choi, Seong-Keun Park, Kyong-Sik Om… in Heart Replacement (1998)

  6. No Access

    Chapter and Conference Paper

    An Adaptive Cardiac Output Control for the Total Artificial Heart Using a Self-Tuning Proportional-Integral-Derivative (PID) Controller

    The development of a control method for the totally implantable artificial heart (TAH) to regulate cardiac output according to the change in physiological demand was the goal of this study. The conventional pr...

    Won Woo Choi, Byoung Goo Min, Hee Chan Kim, Won Kon Kim, Yong Soon Won… in Heart Replacement (1998)

  7. No Access

    Chapter and Conference Paper

    Further Development of the Moving-Actuator Type Total Artificial Heart

    The electromechanical total artificial heart (TAH) developed at Seoul National University Hospital was verified as acceptable for human implantation through several successful animal experiments. In the last t...

    Byoung Goo Min, Jae Mok Ahn, Chan Young Park, Yung Ho Jo, Won Woo Choi… in Heart Replacement (1998)