Abstract
The Polish ventricular assist device (VAD) POLVAD is a pulsatile pump designated to both short and mid term, single and/or double chamber circulatory system assistance during cardiac surgery treatment. Also, it can be applied as temporary assistance of critical heart failure up to its energetic recovery or homodynamic sufficiency (before or post operation stages) or as a temporary bridge to heart transplantation. The important parameters necessary to know during such described assistance are both value and shape of blood pressure and flow. These parameters are strongly dependent on shape of circulatory system input blood pressure curve as well as on set of physiological system parameters. Direct measurement of pressure and flow curves inside VAD is possible but unfortunately it is connected with additional risk for patient and require some construction changes or improvements of VAD itself. One of the possible solution allowing to satisfactory estimation of pressure and flow curve shape concerns application of sensors detecting movement of assistance chamber flexible elements. Therefore the application of monolithic acceleration and gyro sensors estimating both displacement and rotation of chamber construction elements caused by blood pressure changes seem to be reasonable and justified.
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© 2007 International Federation for Medical and Biological Engineering
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Komorowski, D., Pietraszek, S., Darlak, M. (2007). Pressure and Output Flow Estimation of Pneumatically Controlled Ventricular Assist Device (VAD) with the help of Both Acceleration and Gyro Sensors. In: Magjarevic, R., Nagel, J.H. (eds) World Congress on Medical Physics and Biomedical Engineering 2006. IFMBE Proceedings, vol 14. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-36841-0_168
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DOI: https://doi.org/10.1007/978-3-540-36841-0_168
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