Patent ID: 8551052

Claim:
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 collapsible reservoir supported by the disposable housing portion, the collapsible reservoir having an interior for containing a fluidic medium; a pumping assembly comprising a plunger and a barrel for pumping fluidic medium out of the collapsible reservoir, the plunger engaging the barrel when the disposable housing portion and durable housing portion are engaged; a lever connected to one end of the plunger; and a motor connected to the lever for selectively moving the lever when the disposable housing portion and durable housing portion are engaged; wherein movement of the lever by operation of the motor is transferred to movement of the plunger in the axial direction of the barrel, wherein movement of the plunger within the barrel causes the fluidic medium to move out of the collapsible reservoir.