会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • System for protecting sample line in respiratory gas analyzer
    • 用于保护呼吸气体分析仪中样品管线的系统
    • US5676131A
    • 1997-10-14
    • US678347
    • 1996-07-11
    • David M. AndersonSteven D. JamesThor A. Larson
    • David M. AndersonSteven D. JamesThor A. Larson
    • A61B5/083A61M16/00
    • A61B5/083A61M2230/43
    • A method and apparatus is described for preventing contamination of a gas analyzer of respiratory gas exchange analyzing equipment due to a patient's saliva. The method involves determining a resistance value of the inspired respiratory gas flow in a sample line leading to the gas analyzer. This is determined by calculating the absolute pressure in the line at the gas analyzer. The pressure difference from atmospheric pressure is then divided by the sample flow rate to obtain a resistance value. A microprocessor in the equipment compares the calculated resistance of the flow with a previously stored reference threshold resistance. If the calculated resistance exceeds the predetermined threshold, the microprocessor sends a signal to a vacuum pump used to draw the respiratory gases through the gas analyzer. The vacuum pump is immediately shut down when the calculated resistance exceeds the predetermined resistance threshold and, hence, any saliva in the sample line is not drawn into the gas analyzer.
    • 描述了一种用于防止由于患者唾液引起的呼吸气体交换分析设备的气体分析仪的污染的方法和装置。 该方法包括确定通向气体分析器的样品管线中受启发的呼吸气体流量的电阻值。 这是通过计算气体分析仪中的管线中的绝对压力来确定的。 然后将与大气压力的压力差除以样品流量以获得电阻值。 设备中的微处理器将流量的计算电阻与先前存储的参考阈值电阻进行比较。 如果计算的电阻超过预定阈值,则微处理器将信号发送到用于通过气体分析仪吸入呼吸气体的真空泵。 当计算的电阻超过预定电阻阈值时,真空泵立即关闭,因此,样品管线中的任何唾液都不会吸入气体分析仪。