Patent ID: 8409143
Filing Date: 2013-04-02
Classification: A61M,Y10T

Abstract:
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 reservoir supported by the disposable housing portion, the reservoir having an interior for containing a fluidic medium and a plunger moveable within the interior of the reservoir along an axial direction of the reservoir; a slide member supported by the durable housing portion, the slide member having an end for engaging the plunger when the disposable housing portion and durable housing portion are engaged, the slide member further having a threaded, at least partially generally cylindrical surface; a rotatable shaft supported by the durable housing portion, the rotatable shaft extending along the threaded surface of the slide member and having a threaded portion operatively engaged with the threaded surface of the slide member to move the slide member in the axial direction of the reservoir by rotation of the rotatable shaft relative to the slide member; and a drive device supported by the durable housing portion and operatively coupled to the rotatable shaft to selectively rotate the rotatable shaft; wherein movement of the slide member by the rotation of the rotatable shaft is transferred to movement of the plunger in the axial direction of the reservoir, when the slide member is engaged with the plunger.