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Power Management System for a Piston-Based Implantable Infusion Pump

  • US 20130289539A1
  • Filed: 04/27/2012
  • Published: 10/31/2013
  • Est. Priority Date: 04/27/2012
  • Status: Active Grant
First Claim
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1. An implantable infusion device comprising:

  • a pump;

    a charge storage unit;

    a charging circuit configured to supply current to the charge storage unit from a battery in preparation for actuating the pump;

    a pump actuator circuit configured to actuate the pump using energy from the charge storage unit; and

    a voltage boost circuit configured to provide a boosted battery voltage generated from the battery,wherein the charging circuit is configured to supply current to the charge storage unit from the voltage boost circuit instead of directly from the battery in response to (i) a comparison of a voltage of the battery with a predetermined threshold and (ii) a comparison of a voltage of the charge storage unit with the voltage of the battery.

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