心电图机检定中的工频干扰及抑制方法  

Power interference and its restraining in ECG machine testing

作　　者：姚文坡[1] 毛靖宁[1] 刘铁兵[1] 

机构地区：[1]南京军区南京总医院医学工程科,南京210002

出　　处：《医疗卫生装备》2015年第5期89-91,共3页Chinese Medical Equipment Journal

摘　　要：目的:通过对心电图机检定中的工频干扰进行分析,研究其对心电图机的影响及应对措施。方法:根据工频干扰的原理,通过保证电源的稳定性、合理的屏蔽、有效的接地、有效的导线缠绕方式等抑制工频干扰,减小50 Hz工频干扰对心电图机检定的影响。结果:采取上述方法后,工频干扰对心电图机的影响大大减小。结论:抑制工频干扰,可保证心电图机工作的精确度,确保患者诊断的准确性。Objective To analyze the power interference during ECG machine testing and to propose countermeasures.Methods Some measures in power supply stability, shielding, grounding and wire winding were carried out to reduce the influences of 50 Hz interference on ECG machine testing. Results The influences of the power interference were reduced greatly on ECG machine. Conclusion The performances of ECG machine can be ensured by restraining the power interference.

关 键 词：心电图机 工频干扰 电磁屏蔽 滤波 

分 类 号：R197.39[医药卫生—卫生事业管理]