Patent ID: 8651338

Claim:
A drug delivery device to deliver two or more medicaments operable through a single user-operable dose setter and a single dispense interface, comprising, a. a housing containing the user-operable dose setter operably connected to a first dose delivery assembly of a primary reservoir of a first medicament containing at least one dose of a drug agent; b. a dispense button operably connected to the primary reservoir of medicament; c. a single dispense interface configured for fluid communication with the primary reservoir; and d. a secondary reservoir of a second medicament containing at least one drug agent configured for fluid communication with the single dispense interface, wherein the user-operable dose setter is operably connected to a second dose delivery assembly of the second medicament; wherein a single activation of the dispense button causes the selected dose of the first medicament from the primary reservoir and the automatically set dose of the second medicament to be expelled through the single dispense interface, wherein the first and the second dose delivery assemblies are mechanically linked by a rotational coupling such that a rotation of the user-operable dose setter selects a dose of the primary medicament and automatically sets a non-user settable dose of the second medicament.