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OCCLUSION DETECTION TECHNIQUES FOR A FLUID INFUSION DEVICE HAVING A ROTARY PUMP MECHANISM AND AN OPTICAL SENSOR

  • US 20160369790A1
  • Filed: 06/22/2015
  • Published: 12/22/2016
  • Est. Priority Date: 06/22/2015
  • Status: Active Grant
First Claim
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1. A fluid pump mechanism comprising:

  • a stator comprising a stator cam element having a stator cam surface; and

    a rotor comprising an optically detectable feature, a reference surface, and a rotor cam element having a variable height rising from the reference surface, the rotor cam element cooperating with the stator cam element to axially displace the rotor, relative to the stator, as a function of angular position of the rotor;

    wherein the optically detectable feature rotates and axially translates as a function of angular position of the rotor; and

    wherein an optical detection circuit interrogates the optically detectable feature during operation of the fluid pump mechanism to determine an operating condition of the fluid pump mechanism.

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