Patent ID: 8287521
Filing Date: 2012-10-16
Classification: A61M

Abstract:
1. A dispensing device for dispensing medicaments to a patient comprising: (a) a device housing; (b) a carriage assembly disposed within said device housing for movement between a first position and a second position; (c) an aseptically filled collapsible container carried by said carriage assembly, said collapsible container being formed by a blow-fill-seal process and having a continuous laminate wall including a collapsible side wall, a pierceable top wall connected to said collapsible side wall; (d) a stored energy means operably associated with said carriage assembly for moving said carriage assembly between said first and second positions, said stored energy means comprising a spring assembly operably associated with said carriage assembly for exerting a variable force on said carriage assembly, said spring assembly comprising a spring drum and a spring having an elongated strip portion, said strip portion being coiled about said spring drum in varying degrees of tightness and having a first end in engagement with said device housing and a second end in engagement with said carriage; (e) an administration set, including an administration line interconnected with said collapsible container, said administration line comprising an extruded body portion having a plurality of elongated reinforcing filaments embedded there within; (f) fluid flow control means carried by said device housing for controlling the flow of medicament from said collapsible container toward said administration line, said flow control means comprising dose control means for controlling the dose of medicament delivered to the patient and rate control means for controlling the rate of medicament flow from said collapsible reservoir toward said dose control means, said rate control means comprising selector means for selecting the rate of fluid flow between said collapsible container and said administration set and a rate control plate having a plurality of fluid flow channels interconnected with said collapsible container; and (g) a bolus delivery assembly carried by said device housing and in communication with said administration set for delivering bolus doses of medicament to said administration set said bolus delivery assembly comprising a collapsible bolus container having a first portion of a first volume and second portion of a second lesser volume.