#$%^&*AU2017201631B220180927.pdf#####STORAGE AND MIXING SYSTEM WITH COMPRESSIBLE INTERNAL CARTRIDGE FOR PASTY STARTING COMPONENTS ABSTRACT The invention relates to a storage and mixing system for pasty multicomponent polymethylmethacrylate bone cements, the storage and mixing system comprising a first tubular cartridge (1) with a first cylindrical internal space containing a first starting component (3), a first dispensing plunger (5), a second tubular cartridge (2) that is arranged within the first tubular cartridge (1), whereby the external wall of the second cartridge (2) touches against the internal wall of the first cartridge (1) and is attached to the internal wall of the first cartridge (1), whereby the second cartridge (2) contains a second starting component (4) and has a second dispensing plunger (6) arranged in it, whereby a pressing device (7) with a clamping edge (8) for compressing the second cartridge (2) that can be propelled axially in the internal space of the first cartridge (1) is arranged, as seen from the cartridge head (9), behind the first dispensing plunger (5) and the second dispensing plunger (6), whereby the pressing device (7) can be propelled appropriately in the direction of the cartridge head (9) such that the second cartridge (2) is being progressively compressed axially during the motion of the pressing device (7) such that, in the process, the first dispensing plunger (5) and the second dispensing plunger (6) are propelled in the direction of the cartridge head (9). The invention also relates to a method for mixing a PMMA bone cement using a device of this type.1/17 41 9 12 10 14. 14 6 Fig. 1-... - - .. 3 C - 2 vj 0 -5 Fi- -.1
