基于多维评价模型的国产迈瑞呼吸机可用性评价研究

Usability Evaluation Research of Domestic Mindray Ventilators Based on Multi-Dimensional Evaluation Model

目的对迈瑞呼吸机比较有代表性的3个型号[SynoVent E5(E5)、SV300和SV800]进行可用性评价研究,探究国产迈瑞呼吸机可用性发展状况。方法通过构建多维评价指标模型,针对临床医务人员和临床医学工程师两类人群,开展呼吸机可用性评价研究,以评估对象常用操作的临床任务和维护任务作为测试任务,对测试任务的绩效进行主观和客观评价,客观评价包括实验人员完成不同任务所用时间和操作步数,主观评价采用难易程度评估量表和精神负荷量表。结果3种型号呼吸机开机自检、通气模式和参数设置、泄漏警报响应比较差异有统计学意义(P<0.05),其中SV300开机自检需要的时间明显长于SV800、E5,E5通气模式和参数设置耗时明显短于SV300、SV800,SV800泄漏警报响应明显长于SV300、E5。3种型号呼吸机通气模式和参数设置、泄漏警报响应、分钟通气量警报响应、清洁消毒任务完成步数比较差异有统计学意义(P<0.05)。3种型号呼吸机清洁更换防尘网、流量传感器校准、查看高级报警信息3个任务完成时间和完成步数比较差异均有统计学意义(P<0.05)。针对氧电池和蓄电池更换、清洁更换防尘网与清洁吸气和呼气阀3个测试任务,SV800比SV300和E5易于操作。测试者在操作E5时的工作负荷最大。结论综合评估表明,国产迈瑞新型号SV800呼吸机经过技术的迭代升级,产品可用性得到不断提升,可用性评价综合评分表现最好。

Objective To evaluate the usability of three different models of Mindray ventilator[SynoVent E5(E5),SV300 and SV800],and to explore the usability development of domestic Mindray ventilator.Methods By constructing a multidimensional evaluation index model,the ventilator usability evaluation study was carried out for clinical medical personnel and clinical medical engineers.The clinical tasks and maintenance tasks of the commonly used operations of the evaluation subjects were used as test tasks,and the performance of the test tasks was evaluated subjectively and objectively.The objective evaluation included the time used by the experimental personnel to complete different tasks and the number of operation steps.The subjective evaluation was performed using the Likert scale and the NASA task load index scale.Results There were statistically significant differences in startup self-test,ventilation mode and parameter settings,and leak alarm response among the three models(P<0.05).The time required for startup self-test of SV300 was significantly longer than that of SV800 and E5,and the time required for ventilation mode and parameter settings of E5 was significantly shorter than that of SV300 and SV800.SV800 leak alarm response was significantly longer than SV300,E5.There were statistically significant differences in ventilation mode and parameter settings,leakage alarm response,minute ventilation alarm response,and the number of steps completed in cleaning and disinfection tasks among the three models of ventilators(P<0.05).There were statistically significant differences in the completion time and number of steps of the three tasks of cleaning and replacing the air filter,flow sensor calibration,and viewing advanced alarm information(P<0.05).The SV800 was easier to operate than the SV300 and E5 for the three test tasks of oxygen battery and battery replacement,cleaning and replacing the air filter,and cleaning the suction and exhalation valves.The tester had the greatest workload when operating E5.Conclusion Comprehensive evaluation shows that the new model of domestic Mindray SV800 ventilator has been iterated and upgraded,and the product usability has been continuously improved,and the comprehensive score of usability evaluation has the best performance.