Development of a Novel Heart Rate Synchronized Pulsatile Left Ventricular Assist Device

Chun Liu, Jiaxin Fang, C. Yeh, Shien‐Fong Lin
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Abstract

The left ventricular assist device (LVADs) have been used as either a bridge to transplant or destination therapy for end stage heart failure. The continuous-flow models have been used with multiple complications. This project applied electromagnetically driven pump to the development of a heart-rate synchronized pulsatile LVAD. A control system was developed based on LabVIEW programming platform. The LabVIEW program receives pulse signals by DAQ device and then output the signal to control the coil of the pump by DAQ device. Under the action of the magnetic effect of electric current, thus the magnetic piston inside the pump is pushed back and forth. The program not only receives pulse signals but also synchronizes the pump and pulsation. The researchers used heart mock to test the flow situation of water. According to the current situation, the pump can affect the water flow. Currently, the experiment enters the stage that cooperates with Keelung Chang Gung Memorial Hospital. In addition, the circuit is miniaturized and the connector is used for experimental convenience in the hospital in the future.
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新型心率同步搏动左心室辅助装置的研制
左心室辅助装置(lvad)已被用作终末期心力衰竭移植或终点治疗的桥梁。连续流模型已用于多种并发症。本课题将电磁驱动泵应用于心率同步脉动式左心室辅助装置的研制。基于LabVIEW编程平台开发了控制系统。LabVIEW程序通过DAQ设备接收脉冲信号,然后输出信号到DAQ设备控制泵的线圈。在电流的磁效应作用下,使泵内的磁性活塞被前后推动。该程序不仅可以接收脉冲信号,还可以同步泵和脉动。研究人员使用心脏模拟来测试水的流动情况。根据目前的情况,泵可以影响水流。目前,实验进入与基隆长庚纪念医院合作的阶段。此外,电路的小型化和连接器用于未来医院的实验方便。
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