Multiple medicament delivery system

摘要

The device 104 comprises a dose setting mechanism 110 and a first drive mechanism 138 comprising a torsional spring 146. The first drive mechanism 138 is operably coupled to a first cartridge 126 containing a first medicament 106. A proximal end of the torsional spring 146 is coupled to the dose setting mechanism 110 such that setting the dose setting mechanism 110 causes the torsional spring 146 to wind up. A second drive mechanism 140 is operably coupled to a second cartridge 128 containing a second medicament 108. A rotational coupling 142 is operably coupled to the torsional spring 146 and mechanically linking the first drive mechanism 138 to the second drive mechanism 140 such that, after setting the dose setting mechanism 110, activation of the drug delivery device 104 causes the torsional spring to unwind, thereby causing the drug delivery device 104 to deliver a dose of the first medicament 106 and a dose of the second medicament 108.