Effects of a wireless local area network (LAN) system, a telemetry system, and electrosurgical devices on medical devices in a hospital environment.
Effects of a wireless local area network (LAN) system, a telemetry system, and electrosurgical devices on medical devices in a hospital environment.
复制标题
无线局域网 (LAN) 系统、遥测系统和电外科设备对医院环境中医疗设备的影响。
DOI：
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发表时间：
2000
影响因子：
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通讯作者：
I. Hinberg
中科院分区：
文献类型：
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作者：
K. Tan;I. Hinberg
无线局域网（LAN）系统和遥测系统对医院医疗设备的干扰引起了人们的关注。作者调查了65个电子医疗设备的敏感性，无线局域网系统和遥测系统在预选区域的医院。测试基于美国国家标准协会标准C63.18。无线LAN系统工作在2.42 GHz，输出功率为100 mW。遥测系统工作在466 MHz，输出功率为4 mW。在测试的65台设备中，只有两台手持式多普勒设备，一台是D900型迷你多普勒（Huntleigh Healthcare Ltd），一台是811型超声多普勒（Parks Medical Electronics，Inc.），受到局域网系统的影响。在待机模式下放置在LAN系统的10 cm范围内，两个装置都发出周期性的高音搏动声，这可能被误解为患者的正常搏动声。在局域网数据传输过程中，这些噪声变为随机静态噪声。在正常使用条件下，局域网系统绝不会如此靠近医疗设备。在结肠镜检查室，LAN系统的数据传输质量从“良好”变为“可接受”。传输质量的下降可能是由房间里的铅屏蔽引起的。在0.5至1 MHz下工作的电外科器械在3 m的距离内不会影响LAN系统。所有器械均未受到遥测系统的影响。这些研究结果表明，无线局域网系统和遥测系统可以在医院使用。然而，其他系统在使用前应由医院在潜在易感器械上进行测试。
Concerns have been raised about interference of wireless local area network (LAN) systems and telemetry systems with medical devices in hospitals. The authors have investigated the susceptibility of 65 electromedical devices to a wireless LAN system and a telemetry system in preselected areas of a hospital. Testing was based on the American National Standards Institute Standard C63.18. The wireless LAN system operated at 2.42 GHz with an output power of 100 mW. The telemetry system operated at 466 MHz with an output power of 4 mW. Of the 65 devices tested, only two hand-held Doppler units, a Mini Doppler Model D900 (Huntleigh Healthcare Ltd) and a Ultrasonic Doppler Model 811 (Parks Medical Electronics, Inc.), were affected by the LAN system. Placed within 10 cm of the LAN system in standby mode, both units emitted periodic high-pitched beating sounds, which could be misinterpreted as normal beating sounds from the patient. These changed to random static noise during data transmission by the LAN. Under normal conditions of use, a LAN system would never be placed this close to a medical device. The quality of data transmission from the LAN system changed from "good" to "acceptable" in the colonoscopy room. This deterioration in transmission quality could have been caused by the lead shielding in the room. Electrosurgical devices operating at 0.5 to 1 MHz did not affect the LAN system at distances up to 3 m. None of the devices was affected by the telemetry system. These findings suggest that wireless LAN systems and telemetry systems can be acceptable for use in hospitals. Nevertheless, other systems should be tested on potentially susceptible devices by the hospital before use.