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    • 2. 发明申请
    • SAFEGUARDING TECHNIQUES FOR A CLOSED-LOOP INSULIN INFUSION SYSTEM
    • 封闭式胰岛素输注系统的保护技术
    • WO2014035672A2
    • 2014-03-06
    • PCT/US2013/054996
    • 2013-08-14
    • MEDTRONIC MINIMED, INC.
    • MASTROTOTARO, John J.GROSMAN, BenyaminPARIKH, Neha J.ROY, AnirbanKEENAN, Desmond Barry
    • G06F19/00
    • G06F19/3468A61B5/14532A61B5/1495A61B5/4839A61M5/14248A61M5/1723A61M2005/14208A61M2230/201G06F19/00
    • Processor-implemented methods of controlling an insulin infusion device for a user are provided here. A first method obtains and analyzes calibration factors (and corresponding timestamp data) for a continuous glucose sensor, and regulates entry into a closed-loop operating mode of the infusion device based on the calibration factors and timestamp data. A second method obtains a most recent sensor glucose value and a target glucose setpoint value for the user at the outset of the closed-loop mode. The second method adjusts the closed-loop insulin infusion rate over time, in response to the sensor glucose value and the setpoint value. A third method calculates an upper insulin limit that applies to the insulin infusion rate during the closed-loop mode. The insulin limit is calculated based on a fasting blood glucose value of the user, a total daily insulin value of the user, and fasting insulin delivery data for the user.
    • 这里提供了用于控制用户的胰岛素输注装置的处理器实现的方法。 第一种方法获得和分析连续葡萄糖传感器的校准因子(和对应的时间戳数据),并且基于校准因子和时间戳数据来调节进入输注装置的闭环操作模式。 第二种方法在闭环模式开始时获得用户最新的传感器葡萄糖值和目标葡萄糖设定值。 第二种方法是响应于传感器葡萄糖值和设定点值来调整随时间推移的闭环胰岛素输注速率。 第三种方法计算在闭环模式期间适用于胰岛素输注速率的胰岛素上限。 基于用户的空腹血糖值,用户的总每日胰岛素值和用户的空腹胰岛素递送数据来计算胰岛素限制。
    • 6. 发明申请
    • MODIFIED SENSOR CALIBRATION ALGORITHM
    • 改进传感器校准算法
    • WO2009058792A2
    • 2009-05-07
    • PCT/US2008/081481
    • 2008-10-28
    • MEDTRONIC MINIMED, INC.MUELLER, John, C., Jr.KEENAN, Desmond BarryWANG, LuMASTROTOTARO, John J.
    • MUELLER, John, C., Jr.KEENAN, Desmond BarryWANG, LuMASTROTOTARO, John J.
    • A61B5/14532A61B5/14865A61B2560/0223
    • A method of calibrating glucose monitor data includes collecting the glucose monitor data over a period of time at predetermined intervals, obtaining reference glucose values from a reference source that temporally correspond with the glucose monitor data obtained at the predetermined intervals, calculating the calibration characteristics using the reference glucose values and corresponding glucose monitor data to regress the obtained glucose monitor data, and calibrating the obtained glucose monitor data using the calibration characteristics. In additional embodiments, calculation of the calibration characteristics includes linear regression and, in particular embodiments, least squares linear regression. Alternatively, calculation of the calibration characteristics includes non-linear regression. Data integrity may be verified and the data may be filtered. Further, calibration techniques may be modified during a fast rate of change in the patient's blood glucose level to increase sensor accuracy.
    • 一种校准葡萄糖监测数据的方法包括以预定间隔在一段时间内收集葡萄糖监测数据,从参考源获取参考葡萄糖值,该参考源在时间上与以预定间隔获得的葡萄糖监测数据相对应,使用 参考葡萄糖值和相应的葡萄糖监测数据,以回收所获得的葡萄糖监测数据,并使用校准特征校准获得的葡萄糖监测数据。 在另外的实施例中,校准特性的计算包括线性回归,并且在特定实施例中包括最小二乘线性回归。 或者,校准特性的计算包括非线性回归。 可以验证数据完整性,并且可以对数据进行过滤。 此外,可以在患者血糖水平的快速变化率期间修改校准技术以提高传感器精度。