心室辅助装置流体动力性能试验台的设计

Bruno Santos, T. Leao, E. Drigo, J. Fonseca, A. Andrade, Breno Nishida, E. Bock
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引用次数: 1

摘要

这项工作提出了一个心室辅助装置(VADs)的流体动力性能试验台(HPB)的设计,用于评估开发的原型。vad用于充血性心力衰竭(CHF)患者的治疗,既可以作为恢复的桥梁,也可以作为移植或终点治疗。巴西正在开发的vad的性能评估需要HPB。VAD的性能评价主要考虑转速[rpm]、流量[L/min]、压力[mmHg]和功率[W]。该项目包括从HPB中选择执行器和传感器,开发机械部件,监控和模块。HPB机械部件在SolidWorks®中进行快速原型设计,并通过增材制造制造。HPB监控程序通过Labview®程序以图形语言开发,并在具有数据采集系统的开发和应用平台上实现。监控系统的操纵变量是通过BLDC EC45 N339281电机上的Escon 50/4 EC-S电源控制器作用的电机转速[rpm]。被控变量是HT-110流量传感器提供的“VAD流量”[L/min]。开发了用于流动分析的粒子图像测速(PIV)模块。所有过程数据都存储在电子表格中,供以后查阅。HPB可以以令人满意的方式协助分析开发的VADs原型,证明该项目在技术上的成功。
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Design of a Hydrodynamic Performance Bench for Ventricular Assist Devices
This work presents the design of a hydrodynamic performance bench (HPB) of Ventricular Assist Devices (VADs) for evaluations of developed prototypes. VADs are used for the treatment of patients with Congestive Heart Failure (CHF), either as a bridge to recovery, for transplantation or as destination therapy. HPB is required for the performance evaluation of VADs that are under development in Brazil. The performance evaluation of a VAD considers the rotation speed [rpm], flow rate [L/min], pressure [mmHg] and power [W]. The project consists in choosing an actuator and transducers from HPB, and developing the mechanical components, supervisory control and modules. The HPB mechanical components were designed in SolidWorks® following rapid prototyping and built by additive manufacturing. The HPB supervisory program was developed in graphic language through the Labview® program and implemented in a development and application platform with data acquisition system. The manipulated variable of the supervisory system is the motor speed [rpm] acting via an Escon 50/4 EC-S power controller on the BLDC EC45 N339281 motor. The controlled variable is the “VAD flow” [L/min] provided by an HT-110 flow transducer. A particle image velocimetry (PIV) module was developed for flow analysis. All process data are stored in spreadsheets for later consultation. HPB could assist in a satisfactory way in the analysis of the developed VADs prototypes, demonstrating the technical success of the project.
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