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Occlusion sensing for an infusion pump

  • US 9,474,854 B2
  • Filed: 10/06/2014
  • Issued: 10/25/2016
  • Est. Priority Date: 05/21/2007
  • Status: Active Grant
First Claim
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1. An infusion pump system for dispensing medicine, comprising:

  • a pump device including a drive system to dispense a medicine from the pump device and a cap having a fluid channel through which the medicine is dispensed, the cap having means for internal reflection of light emitted generally toward the fluid channel of the cap; and

    a removable controller device including control circuitry to communicate with the drive system of the pump device when the pump device is removably attached to the controller device, the removable controller device including means for emitting light and means for sensing light that are in electrical communication with control circuitry, wherein the means for sensing light receives light from means for emitting light that is internally reflected by the means for internal reflection in the cap.

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