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OCCLUSION DETECTION TECHNIQUES FOR A FLUID INFUSION DEVICE HAVING A ROTARY PUMP MECHANISM AND ROTOR POSITION SENSORS
OCCLUSION DETECTION TECHNIQUES FOR A FLUID INFUSION DEVICE HAVING A ROTARY PUMP MECHANISM AND ROTOR POSITION SENSORS
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机译:具有旋转泵机构和转子位置传感器的流体注入装置的闭塞检测技术
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摘要
An embodiment of a fluid infusion device includes a fluid pump mechanism having a rotor and a stator. The rotor includes a reference surface and a cam element rising from the reference surface, and the stator includes a cam element having a stator cam surface. The cam elements cooperate to axially displace the rotor as a function of angular position of the rotor. A biasing element provides force to urge the cam elements together. A drive motor actuates the rotor to pump medication fluid from a fluid cartridge module to a body, via a subcutaneous conduit. A detection circuit processes axial and angular position data of the rotor, and determines that an upstream occlusion has occurred based on detectable characteristics of the axial and angular position data.
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