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    • 3. 发明授权
    • Calibration system and method for calibrating a blood gas sensor
    • 用于校准血液气体传感器的校准系统和方法
    • US5329804A
    • 1994-07-19
    • US962990
    • 1992-10-16
    • Cheryl D. GermanyConrad T. Oi FongSteven B. DukeGerald G. Vurek
    • Cheryl D. GermanyConrad T. Oi FongSteven B. DukeGerald G. Vurek
    • A61B5/00G01N33/00G01N33/49
    • A61B5/1495A61B5/1491G01N33/0006G01N33/4925
    • A calibration system and method for calibrating a medical sensor (16) that monitors chemical blood gases. A calibrator (12) is used in connection with a tray (14) in which the medical sensor is stored in a sterile environment, both before and during the calibration process. The medical sensor is immersed in a liquid (30) in a tonometry chamber (28) defined in the tray and covered by a membrane (120/122) that is permeable to gas, but impermeable to bacteria. During the calibration process, the tray is inserted into the calibrator, bringing a heated platen (26) into contact with the tonometry chamber, so that the liquid can be heated to a calibration temperature substantially equal to the temperature at which the medical sensor will subsequently be used. A first calibration gas is then bubbled through the liquid until a saturated condition is achieved. Once the temperature of the liquid is increased to the desired calibration temperature, as determined by a temperature sensor on the medical sensor, data for a first calibration point is taken. A second calibration gas is then bubbled through the liquid until saturation is achieved, yielding data for a second calibration point, for each of the chemical blood gas parameters. The calibration data is processed to determine calibration coefficients that will be applied to the medical sensor.
    • 一种用于校准监测化学血液气体的医疗传感器(16)的校准系统和方法。 校准器(12)结合托盘(14)使用,其中医疗传感器在校准过程之前和期间都存储在无菌环境中。 医疗传感器被浸入定义在托盘中的眼压测定室(28)中的液体(30)中,并被可渗透气体但对细菌不透过的膜(120/122)覆盖。 在校准过程中,托盘插入到校准器中,使加热的压板(26)与眼压测定室接触,使得液体可以被加热到基本上等于医疗传感器随后温度的校准温度 使用。 然后将第一校准气体鼓泡通过液体直到达到饱和状态。 一旦液体的温度升高到所需的校准温度,如由医疗传感器上的温度传感器所确定的,则采用用于第一校准点的数据。 然后将第二校准气体鼓泡通过液体,直至达到饱和,得到每个化学血气参数的第二校准点的数据。 处理校准数据以确定将应用于医疗传感器的校准系数。