一种医用一氧化氮流量控制仪的设计与实现  

Design and Implementation of a Medical Nitric Oxide Flow Control Device

作　　者：孙珵琭 胡兆燕[1,2] 陈正龙[2] 赵柏淦 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海健康医学院医疗器械学院,上海200093

出　　处：《生物医学工程学杂志》2016年第4期770-778,共9页Journal of Biomedical Engineering

摘　　要：医用一氧化氮流量控制仪在缓解肺动脉高压的应用中具有重要作用。本文对医用一氧化氮流量控制仪的设计要求、总体设计方案、输送系统以及硬件电路部分进行了介绍。并着重对输送系统以及硬件电路部分进行研究与设计。本文设计的流量控制仪需要与呼吸机配套使用,对患者所吸入治疗气体中的一氧化氮气体浓度进行监测,具有实时显示浓度、超标声光报警等功能。系统通过与呼吸机联用,将治疗气体通入模拟肺中来模拟病人呼吸,进行了线性度实验、稳定性实验以及系统的综合响应时间实验,对系统的可靠性与稳定性进行了验证,最终得出设计的一氧化氮流量控制仪的精度以及响应时间等参数能够满足设计要求的结论。Medical nitric oxide（NO）flow control system plays an important role in lowering pulmonary hypertension.The design requirements,overall scheme,delivery system and hardware circuits of a medical NO flow control system were introduced in this paper.Particularly,we proposed the design of NO delivery system and hardware circuits in detail.To deliver nitric oxide of a variable concentration,the designed system needs to work with a ventilator.The system can adjust and monitor the inhaled nitric oxide concentrations and send out sound and light alarms when the inhaled nitric oxide concentrations are out of the set range.To validate reliability and efficacy,we measured specifications such as linearity,stability and response time of the proposed NO flow control system by continuously administering nitric oxide into inspiratory circuit to deliver nitric oxide of variable concentrations to a test lung.The experiments showed that these specifications can meet the desired requirements.

关 键 词：一氧化氮 流量控制仪 监测系统 肺动脉高压 

分 类 号：TH77[机械工程—仪器科学与技术]