Patent ID: 7563253
Filing Date: 2009-07-21
Classification: A61M

Abstract:
1. A system for delivering a pharmaceutical product from a cartridge having a first, inactivated condition and a second, activated condition, said system comprising: an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge; one or more retention members disposed on said outer surface of said side wall of said injector body; a plunger rod having a proximal end portion, a distal end portion, and one or more receiving members between said proximal end portion and said distal end portion; and, said one or more retention members and said one or more receiving members constructed to cooperatively retain said plunger rod to said injector body adjacent said outer surface of said side wall of said injector body when said plunger rod is in a first position, said one or more retention members and said one or more receiving members constructed to cooperatively release said plunger rod from said injector body when said plunger rod is transitioned axially toward said distal end of said injector body to a second position, said plunger rod having a pushing surface for engaging a cartridge positioned within said cavity of said injector body, said pushing surface constructed to move a cartridge positioned within said injector body axially as said plunger rod is moved from said first position to said second position, whereby movement of said plunger rod from said first position to said second position activates a pharmaceutical cartridge positioned within said cavity.