Patent ID: 8813584

Claim:
Syringe for use with a metering device ( 370 ) comprising a centering element ( 60 ) with an axial through-passage in a cylindrical receiver ( 39 ) at the lower end of a housing for a syringe cylinder ( 2 ) and an axially displaceable piston receiver ( 43 ) within the housing for a syringe piston ( 3 ), comprising a syringe cylinder ( 2 ) and a syringe piston ( 3 ), the syringe cylinder ( 2 ) comprising an outlet at the bottom and a top, a centering flange at the top of said syringe cylinder on an external periphery ( 12 ) for inserting into the receiver ( 39 ) of a metering device ( 370 ), said syringe cylinder including a cylindrical piston movement area ( 5 ) connected to the outlet, with a first internal diameter, in which the syringe piston ( 3 ) is sealingly guided, and at least at a distance of at least 3 mm from the upper end of the syringe cylinder a centering region ( 11 ) designed for insertion therein of a circular hollow cylindrical centering element ( 60 ) of said metering device ( 370 ), which has a second internal diameter, which exceeds the first internal diameter and is at least 16.2 mm and at most 17.7 mm, and the syringe piston ( 3 ) at the upper end has a coupling piece ( 21 ) for inserting into a piston receiver ( 43 ) of the metering device ( 370 ); wherein the syringe piston ( 3 ) at the top has axially extended wings ( 25 ) below a coupling piece ( 21 ) and between the wings ( 25 ) and a cylindrical centering region an annular gap ( 290 ) is present with a gap width of between about 0.5 to 2.5 mm.