Abstract: An apparatus (10) includes a body (2), a plunger (5), and an occlusion (4). The body is able to hold one or more medical substances therein. The body defines a longitudinal axis extending therethrough. The plunger is positioned within a portion of the body and is able to axially advance along the longitudinal axis. The plunger also defines an opening extending therethrough. The occlusion is able to extend through at least a portion of the opening of the plunger so that the plunger and the occlusion fluidly divide the body. The plunger is able to exert a first outward force against the body. The plunger is able to exert a second outward force against the body when the occlusion has been removed where the second outward force is less than the first outward force.

Abstract: An apparatus includes a reconstitution chamber and a diluent chamber. The reconstitution chamber is operable to hold a lyophilized material and able to combine the lyophilized material with a diluent. The diluent chamber holds a diluent and is in selective fluid communication with the reconstitution chamber.