Patent ID: 8512288
Filing Date: 2013-08-20
Classification: A61M

Abstract:
1. A delivery device for delivering an infusion medium to a user, the device comprising: a disposable housing adapted to be carried by a user, the disposable housing including a reservoir container retaining portion; a durable housing configured to be selectively engaged with and disengaged from the disposable housing to allow disposal of the disposable housing without disposing of the durable housing, the durable housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure; a reservoir comprising a container having an interior for containing a fluidic medium and a piston plunger moveable within the interior of the reservoir container in a direction of an axis of the reservoir container, wherein the reservoir container is supported and carried by the disposable housing, the reservoir container being configured to be received by the reservoir container retaining portion and to be manually removable from the reservoir container retaining portion once received by the reservoir container retaining portion; a lead shaft supported for rotation about a lead shaft axis and carried by the durable housing, the lead shaft having a threaded portion located in the exterior volume, external to the enclosed interior volume of the durable housing, the threaded portion of the lead shaft being arranged to engage the piston plunger at an engagement location on the piston plunger and move the piston plunger along the axis of the reservoir with rotation of the lead shaft when the durable housing is engaged with the disposable housing, the lead shaft axis being laterally offset from the axis of the reservoir at the engagement location, the lead shaft having a connection portion located within the enclosed interior volume of the durable housing, wherein the lead shaft extends through an aperture in the durable housing between the interior volume of the durable housing and the exterior volume; and a drive device operatively connected to the connection portion of the lead shaft, to selectively rotate the lead shaft.