Patent ID: 9468725
Filing Date: 2016-10-18
CPC Classification: A61J,A61M

Claim Text:
1. A method of mixing a medicament and delivering the medicament from a medication pen comprising: selecting a first dose of a first medicament contained in a first medication compartment and selecting a second dose of a second medicament contained in a second medication compartment; activating a first dosing mechanism by moving a first dosage plunger engaged in the first medication compartment delivering the first dose into a pen needle assembly received on the distal end of a movable housing, said pen needle assembly comprising a patient end needle, a filler needle, and an intermediate collapsible mixing reservoir; wherein the collapsible mixing reservoir receives the first dose through the filler needle; disengaging the first medication compartment from the collapsible mixing reservoir; moving the movable housing and engaging the second medication compartment with the collapsible mixing reservoir; activating a second dosing mechanism by moving a second dosage plunger engaged in the second medication compartment delivering the second dose into the collapsible mixing reservoir through the filler needle; collapsing the mixing reservoir thereby forcing the first and second doses in the mixing reservoir through the patient end needle.