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CONTROLLER DESIGN OF LEFT VENTRICLE ASSIST DEVICE

机译:左心室辅助设备的控制器设计

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摘要

A left ventricle assist device (LVAD) is a device composed mainly of a pump and a controller. It is used not only to save lives of patients who suffer from left ventricle failure, but also to help them live like healthy people. Due to the continuing increasing number of left ventricle heart failure cases and limited number of heart donations for heart transplant, the need for LVADs become more and more demanding. The inlet of LVAD is connected to left ventricle and the outlet is connected to the aorta, which makes the LVAD work parallel with the left ventricle. The flow rate provided by the pump can compensate for low cardiac output due to failure of the left ventricle and restore the total peripheral blood flow rate to normal values, which is the sum of cardiac output and pump output. If the LVAD only works in one condition, one specific speed can always be found by testing or other methods in advance. But normal daily life involves much more than one condition, an automatic controller is necessary to fulfill all tasks. Actually, the biggest challenge of LVAD will be adaptability to different situations. LVAD should be able to provide needed flow rate in different conditions, which is varying in different conditions. Different conditions include dynamic and emotion condition, like sleeping, sitting, walking, happy, angry, surprised.
机译:左心室辅助装置(LVAD)是主要由泵和控制器组成的装置。它不仅用于挽救患有左心室失败的患者的生命,还可以帮助他们像健康的人一样生活。由于剩下的左心室心力衰竭案例和心脏移植的有限心脏捐赠,LVAD的需求变得越来越苛刻。 LVAD的入口连接到左心室,插座连接到主动脉,这使得LVAD与左心室平行。由于左心室的故障,泵提供的流量可以补偿低心输出,并将总外周血流量恢复到正常值,这是心输出和泵输出的总和。如果LVAD仅在一个条件下工作,则可以通过预先测试或其他方法找到一种特定速度。但正常的日常生活涉及多个条件,是履行所有任务的自动控制器。实际上,LVAD的最大挑战将适应不同情况。 LVAD应该能够在不同条件下提供所需的流速,这在不同的条件下变化。不同的条件包括动态和情感条件,如睡觉,坐着,走路,快乐,愤怒,惊讶。

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