公开(公告)号：US20150328402A1

公开(公告)日：2015-11-19

申请号：US14281766

申请日：2014-05-19

Applicant: MEDTRONIC MINIMED, INC.

Inventor： Keith Nogueira ,  Pratik Agrawal ,  Brian T. Kannard ,  Xiaolong Li ,  Bradley C. Liang ,  Rajiv Shah ,  Yuxiang Zhong

IPC: A61M5/172 ,  G05B15/02 ,  G06F19/00

CPC classification number: G16H20/17 ,  A61M5/14244 ,  A61M5/1723 ,  A61M2205/3303 ,  A61M2230/201 ,  G05B15/02 ,  G06F19/00 ,  G06F19/3468

Abstract: Infusion systems, infusion devices, and related operating methods are provided. An exemplary method of operating an infusion device involves obtaining a filtered measurement indicative of a physiological condition of a user, determining a metric indicative of a characteristic of the filtered measurement based at least in part on one or more derivative metrics associated with the filtered measurement, and determining an output measurement indicative of the physiological condition of the user based at least in part on the filtered measurement, the metric, and a previous output measurement.

Abstract translation: 提供输液系统，输液装置和相关操作方法。 操作输注装置的示例性方法包括获得指示使用者的生理状况的滤波测量值，至少部分地基于与经滤波测量相关联的一个或多个导数度量来确定指示滤波测量的特性的度量， 以及至少部分地基于经滤波的测量，度量和先前的输出测量来确定指示用户的生理状况的输出测量。

公开(公告)号：US20150164383A1

公开(公告)日：2015-06-18

申请号：US14260948

申请日：2014-04-24

Applicant: MEDTRONIC MINIMED, INC.

Inventor： Andrea Varsavsky ,  Xiaolong Li ,  Mike C. Liu ,  Yuxiang Zhong ,  Ning Yang

IPC: A61B5/1495 ,  A61B5/1459 ,  A61M5/172 ,  A61B5/00 ,  A61M5/142 ,  A61B5/145 ,  A61B5/1473

CPC classification number: A61B5/14532 ,  A61B5/0004 ,  A61B5/14503 ,  A61B5/1455 ,  A61B5/14556 ,  A61B5/1459 ,  A61B5/1468 ,  A61B5/1473 ,  A61B5/1495 ,  A61B5/4839 ,  A61B5/7221 ,  A61B5/7278 ,  A61B2560/0223 ,  A61B2560/0238 ,  A61B2562/06 ,  A61M5/142 ,  A61M5/14244 ,  A61M5/1723 ,  A61M2005/1726 ,  A61M2205/3306 ,  A61M2205/3584 ,  A61M2205/3592 ,  A61M2205/50 ,  A61M2205/505 ,  A61M2205/52 ,  A61M2230/005 ,  A61M2230/201 ,  C12Q1/006 ,  G01N21/00 ,  G01N21/59 ,  G01N21/84 ,  G01N27/27 ,  G01N27/3274 ,  G01N27/4163 ,  G01N33/49 ,  G01N33/66 ,  G01N2201/127

Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration. The electrochemical and optical SG values may be weighted (as a function of the respective sensor's overall reliability index (RI)) and the weighted SGs combined to obtain a single, fused SG value.