Patent ID: 8292876

Claim:
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 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 coil spring 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; (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; and (g) a bolus delivery assembly carried by said device housing and in communication with said administration set for delivering bolus doses of medication to said administration set, said bolus delivery assembly comprising: (i) a collapsible bolus container having a first portion of a first volume and a second portion of a second lesser volume; (ii) a first mechanism for collapsing said first portion of said collapsible container; and (iii) a second mechanism for collapsing said second portion of said collapsible container.