Assessment and improvement of the system efficiency for the moving-actuator type biventricular assist device

Jinhan Chung, Wook Eun Kim, Jung Joo Lee, Kyoung Won Nam, Jaesoon Choi, Jun Woo Park, Seong Wook Choi, Chan Young Park, Kyung Sun, Byoung Goo Min

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This is a test report on the efficiency of a moving-actuator type biventricular assist device (AnyHeart, Seoul National University). From the viewpoint of the various system mechanisms, the device can be subdivided into three separate parts: the motor and its associated controller, the actuator and motor assembly, and the blood sac and its associated components (including valves). The motor was operated under various conditions, including different torque, angular speed, and voltage pulses. The total system efficiency of 8% has been reported before, with subpart efficiencies of 50%, 85%, and 19%, respectively, for the motor and its associated controller, the actuator and motor assembly, and the blood sac and its associated components (including valves), under normal operating conditions (4 L/ min pump output, 100 mm Hg aortic pressure [AoP]). This article focuses on the method of analyzing and improving the system efficiency. The applied input voltage under the normal operating conditions of the pump was determined using the analyzed results. Also, a speed profile that takes into consideration the filling state of the blood sac was provided. On the basis of tests performed involving in vitro mock circulation, experimental results are provided to demonstrate the effectiveness of the approach presented in this article.

Original languageEnglish
Pages (from-to)549-555
Number of pages7
JournalArtificial Organs
Volume28
Issue number6
DOIs
Publication statusPublished - 2004 Jun

Keywords

  • Efficiency
  • Filling state
  • Moving-actuator type biventricular assist device (AnyHeart)
  • Speed profile

ASJC Scopus subject areas

  • Bioengineering
  • Medicine (miscellaneous)
  • Biomaterials
  • Biomedical Engineering

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  • Cite this

    Chung, J., Kim, W. E., Lee, J. J., Nam, K. W., Choi, J., Park, J. W., Choi, S. W., Park, C. Y., Sun, K., & Min, B. G. (2004). Assessment and improvement of the system efficiency for the moving-actuator type biventricular assist device. Artificial Organs, 28(6), 549-555. https://doi.org/10.1111/j.1525-1594.2004.07266.x