An Overview on Design and Development of Drive Mechanism for Syringe Pump

<b></b> In this paper, a mechanical drive mechanism for a syringe pump used in biomedical applications is designed and developed. The focus is on a custom gear train that consists of a trapezoidal lead screw connected to a spur gear mesh and stepper motor. Conceptualization, reverse engineering, gear ratio optimization, and validation using ANSYS Workbench for von Mises stress analysis and static structural analysis are all part of the study. Solid Edge was used to model important parts, and laser-cut sheet metal was used to fabricate them. Better force control on the syringe plunger, less mechanical backlash, and precise linear motion is all guaranteed by the upgraded transmission system. The findings show enhanced structural integrity, dependability, and appropriateness for small and effective medical infusion systems.

本研究针对生物医学领域应用的注射泵机械驱动机构开展设计与开发工作。本次研究的核心为一套定制化齿轮传动系统，该系统由连接至直齿轮啮合副的梯形丝杠与步进电机组成。本研究涵盖概念设计、逆向工程、传动比优化，以及借助ANSYS Workbench开展冯·米塞斯应力分析与静态结构分析的验证工作。研究采用Solid Edge对关键零部件进行建模，并通过激光切割钣金工艺完成零件加工。升级后的传动系统可实现对注射器柱塞更优异的力控精度、更低的机械背隙，并保障精准的直线运动输出。研究结果表明，该机构具备更优异的结构完整性、可靠性，且适配小型高效医用输液系统。