Abstract
Severe cardiovascular diseases can be treated using left ventricular assist devices (LVAD). One of the possible LVADs is the Pulsatile Catheter (PUCA) pump that consists of a hydraulically or pneumatically driven membrane pump connected to a valved catheter. In this work a numerical model of the cardiocirculatory system and of the PUCA have been developed in order to study their interaction. In the numerical simulator a pathological condition of the left ventricle has been reproduced and successively the effects of the PUCA on the haemodynamic variables applied were studied. Different functioning modes were tested by changing the ratio between the pump frequency and the heart beat rate (HR) as 1:1, 1:2 or 1:3 and by introducing a delay time between the cardiac and the PUCA cycle. The performance of the pump was evaluated in terms of cardiac output, PUCA and coronary flows and it was studied for different HR values. Results show a good resemblance between the model and literature data and indicate that different synchronization and timing can influence the functioning of the pump. In particular, the frequency ratio and the time delay of the pump cycle can contribute to optimize the performance of the PUCA.
| Original language | English |
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| Title of host publication | Proceedings of the 7th IASTED International Conference on Biomedical Engineering, BioMED 2010 |
| Pages | 1-5 |
| Number of pages | 5 |
| Volume | 1 |
| Publication status | Published - 2010 |
| Event | 7th IASTED International Conference on Biomedical Engineering, BioMED 2010 - Innsbruck, Austria Duration: Feb 17 2010 → Feb 19 2010 |
Other
| Other | 7th IASTED International Conference on Biomedical Engineering, BioMED 2010 |
|---|---|
| Country/Territory | Austria |
| City | Innsbruck |
| Period | 2/17/10 → 2/19/10 |
Keywords
- Cardiovascular system
- Haemodynamics
- Modelling
- Simulation
- Ventricular assist device
ASJC Scopus subject areas
- Biomedical Engineering
- Medicine (miscellaneous)