Patent ID: 7666164
Filing Date: 2010-02-23
Classification: A61D,A61M

Abstract:
1. A safety shield system for a needle cannula of a pen injector having a drug storage chamber, said safety shield system comprising: a mount for removably securing said safety shield system to the pen injector, said mount having the needle cannula secured thereon and the mount being removable with the safety shield system from the drug storage chamber with the needle cannula attached to the mount; a shield movably secured to said mount, said shield being movable between a first position, in which at least part of the needle cannula is surrounded by said shield, and a second position, in which at least part of the needle cannula is not surrounded by said shield, and a third position, in which the needle cannula is completely surrounded by said shield; a spring positioned between said mount and said shield for biasing said shield axially to said first and said third positions; a lock secured to said mount and in operative engagement with said shield to permit one-time movement of said shield from said first position to said second position, and one-time movement of said shield from said second position to said third position, said lock securing said shield in said third position following axial movement of said shield from said second position said third position without rotating the shield, said lock being non-depressible by a user so as to prevent subsequent movement of said shield out of said third position thereby locking said shield in said third position following movement of said shield from said second position to said third position.