The bioinjection device (10) has a housing (32) including a pistol grip (35) and an elongated barrel (10). A trigger (36) is pivotally mounted to the housing. A plunger (16) and needle (18) are slidable between a first position in which the plunger and needle are slidably disposed in the barrel and a second position in which the plunger and needle extend from an opening in the end of the barrel. A retaining member (14) is disposed about the opening at the end of the barrel. A spring-biased actuation mechanism connects the trigger with the plunger and needle. A membranous cartridge (12) containing bone morphogenic protein, antibiotics, and/or other medication is loaded into the retaining member. A surgeon can inject the cartridge into a bone fracture or degenerative bone tissue during surgery to deliver the medicament directly to the affected site.
