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Systems and methods to address air, leaks and occlusions in an insulin pump system

  • US 9,119,917 B2
  • Filed: 12/16/2013
  • Issued: 09/01/2015
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. An ambulatory insulin pump, comprising:

  • a replaceable insulin cartridge, the insulin cartridge adapted for connection to an infusion set for delivering insulin within the insulin cartridge to a patient;

    a pump mechanism adapted to cooperate with the insulin cartridge to deliver insulin from the insulin cartridge;

    a pressure sensor adapted to be in communication with an internal environment of the insulin cartridge; and

    a controller adapted to operate the pump mechanism to deliver insulin from the insulin cartridge to the patient through the infusion set, the controller further adapted to;

    obtain from the pressure sensor a pressure value of the pressure in the internal environment of the insulin cartridge;

    compare the pressure value to another pressure value, wherein the another pressure value is a pressure value of the pressure in the internal environment of the insulin cartridge previously obtained from the pressure sensor; and

    selectively issue an occlusion alert if the comparison indicates that an occlusion may be present in the infusion set.

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