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患者监护系统集成模拟前端可大幅降低功耗 - China Medical Device Manufacturer
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Fri, January 19th, 2018

2010年4月CMDM电子快讯 » 技术新知
患者监护系统集成模拟前端可大幅降低功耗

德州仪器 (www.ti.com/medical)推出了全面集成的模拟前端(AFE)系列首款产品,用于便携式ECG和EEG设备、患者监护以及消费级医疗产品。据该公司称,新型AFE可将功耗和组件数量减少95%。这种8通道24位ADS1298模拟前端每个通的能耗仅为1 mW,同时可为客户提供较高的诊断准确度。

这些特性有助于医疗器械制造商开发出相比现有产品重量更轻、价格更低的设备,德州仪器表示:医生将能长期监控各种生命体征,而且这种便于携带、隐蔽和佩戴的器械可以提高患者的舒适度,他们因此乐意使用。

ADS1298集成了ECG与EEG前端所需的所有常见特性:
  • 8 个低噪可编程增益放大器
  • 8 个高分辨率同步采样模数转换器
  • 右腿驱动集成放大器
  • 针对威尔逊中心终端与戈德伯格终端的集成放大器
  • 数字计步功能
  • 持续启动检测
  • 板载振荡器与参照,用于小尺寸和低功耗应用。

德州仪器称,ADS1298的4-uVpp(典型值)输入引发噪声远远超出IEC60601-2-27/51标准设定的限值,从而提高便携式设备以及高通道密度高档 ECG与EEG设备的测量精度。

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