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Patch-sized fluid delivery systems and methods

  • US 9,033,921 B2
  • Filed: 02/27/2009
  • Issued: 05/19/2015
  • Est. Priority Date: 02/09/2006
  • Status: Active Grant
First Claim
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1. A delivery device for delivering an infusion medium to a user, the device comprising:

  • a disposable housing portion adapted to be secured to a user;

    a durable housing portion configured to be selectively engaged with and disengaged from the disposable housing portion to allow disposal of the disposable housing portion without disposing of the durable housing portion;

    a first reservoir supported by the disposable housing portion, the reservoir having an interior for containing a fluidic medium;

    a pumping actuation member;

    a pumping chamber, partially defined by an expandable structure, having an interior volume, the pumping actuation member configured to be selectively expandable when the disposable housing portion and the durable housing portion are engaged;

    a variable-volume metering chamber supported by the disposable housing portion, for containing the fluid medium for expanding the expandable structure;

    a fluid path for coupling the variable-volume metering chamber to the pumping chamber; and

    a drive device supported by the durable housing portion, for selectively conveying the fluidic medium through the fluid path, from the first reservoir to the pumping chamber, to selectively expand the expandable structure, when the first housing portion and the second housing portion are engaged.

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