The sequential flow pump: A novel built-in blood pump for heart-lung equipment

Shintaro Hara, Takashi Isoyama, Itsuro Saito, Terumi Yurimoto, Xin Yang Li, Yoshinori Kusakabe, Erina Maeno, Yusuke Inoue, Yusuke Abe

Research output: Contribution to journalArticlepeer-review


For the emergency medical care of severe lung and/or heart failure patients, we have been developing an emergency life support system (ELSS) that is compact heart-lung equipment. In this study, a novel built-in blood pump named the sequential flow pump (SFP) for the ELSS was proposed and its performance was analyzed with a computational fluid dynamics and experimental models. The SFP is a special centrifugal pump in which centrifugal force is given sequentially two times to the fluid with a single impeller. The computational and experimental models were designed to have the impeller with about 60 mm in diameter. The result showed that the target performance of 5 l/min against 350 mmHg of pressure load could be achieved with 3300 rpm of rotational speed, which was lower speed than that of the conventional centrifugal pumps. The potential of the SFP was demonstrated.

Original languageEnglish
Pages (from-to)O-537-O-538
JournalTransactions of Japanese Society for Medical and Biological Engineering
Publication statusPublished - 2014 Aug 17


  • Blood pump
  • Computational fluid dynamics
  • Device for lung and/or heart failure patients
  • Emergency medical care

ASJC Scopus subject areas

  • Biomedical Engineering


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