Patent ID: 7407492

Claim:
An administering device assembly comprising: a) an administering device having an outer casing, a rotating dosing mechanism for selecting a dose amount to be administered, an activating means for initiating administration of the injection, a dose delivery end, and a protrusion formed on the surface of the outer casing arranged distal to the dose delivery end; b) a first plug-on body section to be positioned on the outer casing of the device distal to the injection delivery end, said first plug-on body having an elongated groove extending along a longitudinal axis, wherein the elongated groove has a narrow portion for sliding accommodation of the protrusion formed on the surface of the outer casing of the device and a widened portion for accommodating the protrusion to lock the plug-on body to prevent axial and rotational movement of the plug-on body in relation to the outer casing of the device; and c) a second plug-on body section fixedly attached to the first plug-on-body section and positioned proximal to the activating means of the device and distal to the injection delivery end, wherein the second plug-on body section extends over the rotating dosing mechanism of the device, thereby preventing adjustment of the rotating dosing mechanism of the device, and wherein said second plug-on body section provides an optics system for reading a dosage scale of the rotating dosing mechanism of the device.