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    • 85. 发明授权
    • Method and apparatus for estimation of resting respiratory quotient
    • US06884222B1
    • 2005-04-26
    • US10718075
    • 2003-11-20
    • James R. Braig
    • James R. Braig
    • A61B5/083A61B5/08
    • A61B5/083
    • A method and apparatus for determining a user's Respiratory Quotient (RQ) using just measured O2 and CO2 concentrations without use of a flow meter. The RQ is determined by measuring the user's real-time inspired O2 concentration (INS O2) and end tidal O2 concentration (ETO2) and measuring the user's real-time inspired CO2 concentration (INS CO2) and end tidal CO2 concentration (ETCO2), and then determining the user's RQ from the measured INS O2, ETO2, INS CO2, and ETCO2 values in accordance with the following equation: RQ=(ETCO2−INS CO2)/(INS O2−ETO2). In order to avoid error introduced by the flow rate, the measurement steps are preferably performed while the user is in a resting condition. Also, ETCO2 is preferably measured as the maximum CO2 value in a breath cycle of the user, while INS CO2 is preferably measured as the minimum CO2 value in a breath cycle of the user. Similarly, ETO2 is preferably measured as the minimum O2 value within a breath cycle of the user, while INS O2 is measured as the maximum O2 value within a breath cycle of the user. On the other hand, the values of INS CO2 and ETCO2 also may be determined in accordance with the invention by analysis of a CO2 waveform of a breath cycle of the user and the values of INS O2 and ETO2 determined by synchronizing timing of the O2 waveform of a breath cycle of the user with the CO2 waveform and sampling INS O2 and ETO2 values simultaneously with sampling of complementary CO2 values determined by analysis of the CO2 wavefomm. The RQ measuring device may include the oxygen and CO2 sensors in a mainstream or sidestream configuration.
    • 87. 发明授权
    • Fluid handling cassette system for body fluid analyzer
    • 流体处理盒系统用于体液分析仪
    • US09561001B2
    • 2017-02-07
    • US12986112
    • 2011-01-06
    • Richard KeenanJeff ChiouJennifer GableKen LiRoger TongMike RecknorJames R. Braig
    • Richard KeenanJeff ChiouJennifer GableKen LiRoger TongMike RecknorJames R. Braig
    • G01N33/50A61B5/157
    • A61B5/157G01N33/50
    • A fluid handling system for use in bodily fluid analysis. The system comprises a first fluid handling module configured to interface with a main instrument. The first fluid handling module has a first fluid handling network and the first fluid handling network includes an infusate passage and an infusion fluid pressure member suitable for moving fluid within the infusate passage. The fluid handling system also has a second fluid handling module separate from the first module which is configured to interface with the main instrument. The second fluid handling module has a second fluid handling network and at least one sample analysis cell which is accessible via the second fluid handling network. The first and second modules are configured to interconnect and provide fluid communication between the first and second fluid handling network and the sample cells.
    • 用于体液分析的流体处理系统。 该系统包括被配置为与主仪器接口的第一流体处理模块。 第一流体处理模块具有第一流体处理网络,并且第一流体处理网络包括适于在输注通道内移动流体的输注通道和输液流体压力构件。 流体处理系统还具有与第一模块分离的第二流体处理模块,第一模块被配置为与主仪器相接触。 第二流体处理模块具有第二流体处理网络和可经由第二流体处理网络访问的至少一个样品分析单元。 第一和第二模块被配置为在第一和第二流体处理网络和样品池之间互连并提供流体连通。