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Detecting empty medical pump reservoir

  • US 8,801,668 B2
  • Filed: 07/19/2012
  • Issued: 08/12/2014
  • Est. Priority Date: 04/27/2010
  • Status: Active Grant
First Claim
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1. A medical device system comprising:

  • a reservoir configured to store a therapeutic fluid;

    a medical pump configured to receive at least a portion of the therapeutic fluid from the reservoir and deliver the portion of the therapeutic fluid to a patient, the pump comprising an actuator that is movable through a pump stroke, wherein the actuator makes a noise associated with the pump stroke at an end of the pump stroke;

    a sensor configured to detect a characteristic of the noise; and

    a processor configured to determine that the characteristic of the noise indicates the reservoir is empty or near empty, wherein the characteristic of the noise comprises at least one of an amplitude of the noise, a frequency of the noise, and a duration of the noise.

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