Abstract: Fluid delivery devices for delivering therapeutic agents are described. More particularly, this disclosure relates to drug reconstitution devices having a plurality of components movable with respect to one another such that an active agent and a solvent can be reconstituted within the device prior to injection. The fluid delivery devices can include a housing, a cartridge holder, a cartridge disposed within the cartridge holder, a button rod, and a foot. The cartridge stores the active agent and the solvent, which are separated by one or more stoppers. The button rod and foot can provide an axial force upon the stopper(s) in the cartridge to inject the fluid once reconstituted. The foot and the button rod can be separate components, thereby enabling the foot to rotate independently with respect to the button rod as the cartridge holder is rotated to reconstitute the therapeutic and prime the device for injection.

Abstract: A digital display of an active window is provided. An application, separate from the application providing the digital display, is capable of identifying an artifact in the active window of the digital display without a priori knowledge or an application programming interface to the application providing the digital display. The artifacts may be alpha-numeric artifacts or non-alpha-numeric artifacts. The active window may be examined in multiple dimensions including 2 dimensions, 3 dimensions or more. Alpha-numeric artifacts, once identified, are pre-processed to remove anti-aliasing to allow for processor optical recognition.