Detecting conditions associated with medical device operations using matched filters
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United States of America Patent
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Aug 2, 2016
Grant Date -
Feb 19, 2015
app pub date -
Aug 13, 2013
filing date -
Aug 13, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus are provided for infusion devices and related operating methods. An exemplary device includes a sensing arrangement to provide an output indicative of a characteristic that is influenced by operation of the device, and a control module that is coupled to the sensing arrangement to apply a matched filter corresponding to a condition associated with the operation of the device to the output of the sensing arrangement and detect that condition based on the filtered output. In one example, the device includes a motor coupled to a plunger of a reservoir and operable to displace the plunger, wherein the characteristic is a force opposing displacement of the plunger and the control module detects an occlusion condition in a fluid path from the reservoir based on filtered force measurements.
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