负压隔离舱空中转运过程的舱体气压变化研究

摘要

目的:探究负压隔离舱在空中转运过程中内外压差的变化情况,分析其性能的稳定性,确保用其空中转运烈性呼吸道传染患者过程中,医护人员不被传染.方法:采用卫生装备研究所自行研制的自带实时记录功能的压差监测仪,测量飞机飞行5个阶段中负压隔离舱内外气压变化情况,最终判断负压隔离舱在空中转运过程中能否安全运行及需要注意的因素.结果:空中转运过程中舱内负压最大值为-60 Pa,最小值为-120 Pa,远低于安全压力-15 Pa,并且飞行过程中舱内负压与高度呈正比.结论:负压隔离舱在空中转运伤病员过程中可有效保持负压状态,可为空中转运传染病员提供有力的技术支持.%Objective To prevent the medical personnel from infection during aeromedical evacuation of fulminating respiratory infectious disease patients by exploring the changes of differential pressure between those in and out of the negative-pressure isolation capsule and analyzing the stability of the capsule during aeromedical evacuation.Methods A differential pressure monitor developed by Institute of Medical Equipment was used for real-time recording of the changes the differential pressure in and out of the capsule during five flight phases of the aircraft,and the safety of the capsule during aeromedical evacuation and corresponding considerations were investigated.Results The maximum and minimum values of the negative pressure in the capsule were-60 Pa and-120 Pa respectively during aeromedical evacuation,which were all less than the safety threshold-15 Pa.The negative pressure was is directly proportional to the flying altitude.Conclusion The capsule keeps negative pressure effectively during flight,and thus facilitates patient aeromedial evacuation greatly.