#$%^&*AU2019253817A120200625.pdf#####Device for mixing a bone cement with hollow space for monomer transfer Abstract The invention relates to a device for the production of a bone cement dough from a monomer liquid (6) and a cement powder (5) comprising a cartridge (1) with an internal space； a cartridge head (2) with a dispensing opening； a conveying plunger (3) that is supported in the internal space of the cartridge (1) such that it is pushable in the direction of the dispensing opening； a dispensing plunger (4) between the dispensing opening and the conveying plunger (3) that is supported in the internal space of the cartridge (1) such that it is pushable in the direction of the dispensing opening； a first hollow space, in which the cement powder (5) is arranged； a second hollow space (7) that is bordered by the dispensing plunger (4) and the conveying plunger (3)； a rear-side part (11) of the internal space of the cartridge (1)； a conducting means (8) that connects the second hollow space (7) to the rear-side part (11) of the internal space of the cartridge (1) such as to bypass the conveying plunger (3) and be permeable to the monomer liquid (6), whereby the conducting means (8) can be closed by the conveying plunger (3) with respect to the second hollow space (7) by shifting the conveying plunger (3) in the direction of the dispensing plunger (4), and a feedthrough (9) in the dispensing plunger (4) that connects the first hollow space and the second hollow space (7) such as to be permeable to the monomer liquid (6). The invention also relates to a method for production of a bone cement dough using a device of this type. (Figure 1)52 50 54 38 32 56 6 34 36 29 58 48 33 35 8 11 3 28 46 440 42 2 6 4o 5 24 30 12 22-Figure 1
