Patent ID: 8317756
Filing Date: 2012-11-27
Classification: A61M

Abstract:
1. An apparatus, comprising: a medicament container having a distal end portion and a proximal end portion, the distal end portion configured to be coupled to a needle; a piston movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion configured to contain a medicament; and an actuator assembly coupled to the proximal end portion of the medicament container, the actuator assembly having a pressurized fluid container, a regulator and a bias member, the pressurized fluid container configured to move relative to the medicament container between a first position and a second position, the regulator configured to fluidically couple the pressurized fluid container and the second internal portion of the medicament container when the pressurized fluid container is in the second position, the bias member configured to bias the pressurized fluid container in the first position.