Patent ID: 7569050

Claim:
A delivery device for delivering an infusion media to a user, the device comprising: a first housing portion adapted to be secured to a user; a second housing portion configured to be selectively engaged with and disengaged from the first housing portion to allow disposal of the first housing portion without disposing of the second housing portion; a reservoir for containing infusion media supported on the first housing portion, the reservoir comprising a container having an interior space for containing an initial volume of infusion media and a moveable member disposed at least partially within the container and moveable for varying the interior space of the container to drive one or more discrete volumes of infusion medium from the initial volume of infusion medium in the interior space of the container, wherein each discrete volume is less than the initial volume; electrical control circuitry and a drive device contained in the second housing portion, wherein the electrical control circuitry controls the delivery of infusion media from the reservoir to the user and the drive device is coupled to a drive linkage for selectively driving the drive linkage in a drive direction under control of the electrical control circuitry; wherein the drive linkage operatively couples the drive device to the moveable member of the reservoir to selectively move the moveable member to change the interior space of the container of the reservoir and drive infusion media from the reservoir under control of the electrical control circuitry when the second housing portion is engaged with the first housing portion and the drive linkage is selectively driven in the drive direction by the drive device.