Patent ID: 8398585

Claim:
In combination with a single-use injector ( 4 ) and two-chamber system ( 99 ), including at least a first chamber ( 105 ) being part of a cylinder/piston unit ( 100 ) having a cylinder interior ( 110 ) which can be received in the single-use injector ( 4 ) and a second chamber ( 255 ) being part of a container ( 250 ), the container ( 250 ) having an interior ( 252 ) and having at least one opening ( 253 ), the container ( 250 ) is closable at least temporarily by means of a stopper ( 257 ) and insertable in a container adapter ( 200 ) which is detachably mounted on the single-use injector ( 4 ), the improvement which comprises: the container ( 250 ) upon partial insertion arrangement with the container adapter ( 200 ), the container adapter ( 200 ) closes the at least one opening ( 253 ) by displacing the stopper ( 257 ), the stopper ( 257 ) and the container adapter ( 200 ) upon partial insertion arrangement become interlocked non-detachably to each other, and the container ( 250 ) upon full insertion arrangement with the container adapter ( 200 ), the container adapter ( 200 ) having the stopper ( 257 ) affixed thereto, connects in fluid communication the cylinder interior ( 110 ) of the cylinder/piston unit ( 100 ) to the interior ( 252 ) of the container ( 250 ).