基于故障数据的硬式内窥镜可靠性研究  

Reliability research on hard-type endoscope based on failure data

作　　者：范开洲[1] 贺靖 刘灵 刘胜林[1] 吴川清 陶凯雄[2] FAN Kai-zhou;HE Jing;LIU Ling(Department of Medical Engineering,Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430022,China;不详)

机构地区：[1]华中科技大学同济医学院附属协和医院医学工程科,湖北武汉430022 [2]华中科技大学同济医学院附属协和医院胃肠外科,湖北武汉430022

出　　处：《中国医学装备》2020年第9期26-29,共4页China Medical Equipment

基　　金：国家重点研发计划(2017YFC0113503)“医用内窥镜设备的可靠性评价研究”。

摘　　要：目的:建立硬式内窥镜的评价体系,研究探索硬式内窥镜的可靠性指标。方法:采用内窥镜故障间隔时间观测样本,建立故障间隔时间分布模型,在拟合内窥镜故障间隔时间的累计分布函数和概率密度分布函数基础上,采用最大似然估计方法对推断的常见分布模型进行估算,使用Anderson-Darling(A-D)检验对各模型进行优选。结果:确立硬式内窥镜故障间隔时间服从威布尔分布,根据模型计算得到该硬式内窥镜的可靠度R(t)、平均故障间隔时间(MTBF)等参数指标,得到其故障分布规律。结论:根据建立的硬式内窥镜评价体系,能够得到硬式内窥镜可靠性各项指标,可为医院及厂商制定预防性维护策略提供参考。Objective: To construct an evaluation system of hard-type endoscope so as to research and explore the reliability indicators of the hard-type endoscope. Methods: Adopted failure interval time of endoscope to observe samples and construct distribution model of failure interval time. And the maximum likelihood estimation was adopted to estimate common distribution model that was deduced based on the accumulatively distribution function and probability density distribution function of fitting failure interval time of endoscope. And Anderson-Darling(A-D) test was used to optimize various models. Results: The established failure interval time of hard-type endoscope obeyed to Weibull distribution. According to the model calculation, the parameter indicators such as the reliability R(t) and mean time between failures(MTBF) and others of the hard-type endoscope were obtained, and the regulation of failure distribution was further obtained. Conclusion: According to the established hard-type endoscope evaluation system, the various indicators of reliability of hard-type endoscope can be obtained, and they can provide references for hospital and manufacturer in formulating preventive maintenance strategy.

关 键 词：故障数据 内窥镜 可靠性 预防性维护 

分 类 号：R318.6[医药卫生—生物医学工程]