Numerical modelling of blood flow behaviour in the valved catheter of the PUCA-pump, a LVAD

P.L.J. Morsink, G.J. Verkerke, H.J. Grootenboer, D. Mihaylov, G. Rakhorst

Research output: Contribution to journalConference articleAcademicpeer-review

8 Citations (Scopus)

Abstract

Mechanical heart assistance, performed by the PUIsatile CAtheter (PUCA) pump, chronologically takes place by sucking blood from the left ventricle and ejecting it into the ascending aorta. Within the pump activity the problem of hemolysis and clotting is encountered. In this study the influence of valve geometry on blood cell damage and stagnant zones has been investigated. A variable valve length coupled to a catheter ejection gap and a variable valve angle have been studied. In case of the studied valve, optimal parameter values have been determined. Compared to small catheter ejection gaps with a corresponding valve length, blood damage is found to be less for large ejection gaps with corresponding valve dimensions. In systole a valve positioned in a 0° angle proves to be best, whereas in diastole a +20° angle is preferable. Because the system is operating in both systole and diastole, a 0° angle valve is applied.
Original languageEnglish
Pages (from-to)277-284
JournalInternational journal of artificial organs
Volume20
Issue number5
DOIs
Publication statusPublished - 17 Oct 1996
EventXXIII ESAO Congress 1996 - Warsaw, Poland
Duration: 17 Oct 199619 Oct 1996
Conference number: 23

Keywords

  • METIS-145266

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