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- W2696864602 abstract "Mechanical circulatory support using a ventricular assist device (VAD) has been an essential therapeutic tool for patients with severe heart failure waiting for a heart transplant. To the enhancement of the therapeutic efficacy or safety and prevention of complications, advanced software functionality such as VAD drive control may be equally important as hardware improvements. However, controlling VADs in the realistic situation would be difficult because it is necessary to model the whole including the VAD and the cardiovascular dynamics. To solve this problem, we have proposed an autonomous VAD control method based on stochastic model. In this study, we sought to investigate whether a flow control application of our method can be used to adaptively control a continuous flow VAD. To evaluate behaviors based on the implemented algorithm, control testing on a mock circulation loop simulated a left heart bypass support and inflow sucking (unexpected event). These were compared with the linear flow rate control. As a result, the flow rate of the VAD reached a target value in both methods to changes of the circuit resistance. The behaviors to inflow sucking were found as follows: linear control failed by increasing rotational speed for the sucking. On the other hand, the proposed method reduced frequency of the sucking up to 12% by behaviors to searchingly decrease rotational speed." @default.
- W2696864602 created "2017-06-30" @default.
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- W2696864602 date "2015-01-01" @default.
- W2696864602 modified "2023-10-17" @default.
- W2696864602 title "S0220104 Investigation of Basic Characteristics of an Autonomous Control Algorithm Using Stochastic Method for a Ventricular Assist Device" @default.
- W2696864602 doi "https://doi.org/10.1299/jsmemecj.2015._s0220104-" @default.
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