一种防回血逆向阻流器的设计  

Design of a Blood-Return-Control Infusion Set with Floating Sluices

作　　者：吴梅[1] 谭平[1] 陈德政[1] 陶静[2,3] 

机构地区：[1]简阳市人民医院肾内科,四川简阳641400 [2]四川理工学院,四川自贡643000 [3]过程装备与控制工程四川省高校重点实验室,四川自贡643000

出　　处：《中国医疗设备》2016年第1期42-44,共3页China Medical Devices

基　　金：四川省高校重点实验室开放基金项目资助(GK201304;GK201201)

摘　　要：本文阐述了一种主要由防回流管和锥形浮体组成的逆向阻流器的设计过程,并采用FLUENT软件模拟了输液管中出现血液回流时逆向阻流器中的流场。模拟计算结果显示,逆向阻流器中的压力场分布有利于浮体的移动,当浮体的密度与流体的密度一致时,流体对浮体的轴向作用力能够推动浮体移动并贴紧输液管内壁,从而达阻流目的。模拟结果表明,该装置可应用于输液器中,防止血液回流。The paper describes the process of designing the blood-return-control infusion set with floating sluices. The flow field, which is formed during blood-return in a backwards flow breaker, is simulated with the FLUENT software. The result shows that the pressure field is in favor of the movement of the floating body in the backflow preventer; the axial force of fluid can make the floating body move and compact the internal face of the infusion tube. The gravity and buoyancy can be ignored since the density of the floating body is the same with the fluid in the infusion tube. Therefore, the blood backflow can be eliminated by a vein transfusion device with a backwards flow breaker. Moreover, the backwards flow breaker can be used in many projects which are similar to the intravenous transfusion.

关 键 词：逆向阻流器 浮体移动 FLUENT软件 血液回流 

分 类 号：R197.39[医药卫生—卫生事业管理]