Patent ID: 8257309

Claim:
In combination with a disposable injector including a housing ( 10 ), an at least intermittently fillable cylinder/piston unit ( 100 ) which is arranged thereon, the cylinder/piston unit ( 100 ) includes a fillable cylinder ( 101 ) having a cylinder interior ( 110 ) and a manually movable piston ( 111 ), and with a detachable container adapter ( 200 ) mounted upstream of the cylinder/piston unit ( 100 ), the container adapter ( 200 ) supports a container ( 250 ) including an openable stopper ( 257 ), the container ( 250 ) at least intermittently fillable in a delivery state with active substance and closeable by the openable stopper ( 257 ), the improvement which comprises: the piston ( 111 ) of the cylinder/piston unit ( 100 ) is directly movable separately via a pump rod ( 140 ), the container adapter ( 200 ) engages at the front at least partially around the cylinder ( 101 ) of the cylinder/piston unit ( 100 ), the container adapter ( 200 ) has an intermediate floor ( 211 ) which bears at least partially on a free end face ( 103 ) of the cylinder ( 101 ), a dual adapter ( 240 ) having at least one through channel ( 241 ) therethrough is operably arranged between the container ( 250 ) and the intermediate floor ( 211 ), the free end face ( 103 ) of the cylinder ( 101 ) operably contacting the dual adapter ( 240 ), the container ( 250 ) sits longitudinally displaceable in the rear of the container adapter ( 200 ) and, in the delivery state, bears tightly with its stopper ( 257 ) on the dual adapter ( 240 ), the container ( 250 ) is opened by displacing it towards the intermediate floor ( 211 ) and pushing the stopper ( 257 ) into the container ( 250 ).