抄録
An automatic, on-line and real-time monitoring and estimation system (TOTOMES; Tohoku University and Toyohashi University of Technology, monitioring and estimation system) for the cardiovascular dynamics under left ventricular assist device (LVAD) pumping has been developed to unload the operator who has to pay constant attention to the LVAD operation. The TOTOMES has the function which detects the presence and origin of accidents happening in the cardiovascular system, the pneumatic drive unit as well as the automatic controller. Detection of the malfunction is realized by using fuzzy reasoning. The combination of several measurements and estimates included in the antecedent of the fuzzy rules enables us to distinguish the origin of the malfunction. In in vivo experiment using an adult goat, it was ascertained that the proposed system successfully worked when the inlet cannula resistance was suddenly changed by clamping and when the blood withdrawing was carried out.
