A battery paste mixer condensation assembly includes a duct, a condenser, a basin, and a pipe. The duct is in fluid communication with a battery paste mixer. Exiting gas from the battery paste mixer can travel through the duct. The condenser is situated downstream of the duct. The basin is situated near the condenser. Condensed liquid from the condenser is deposited in the basin. The pipe is in fluid communication with the basin and is in fluid communication with the battery paste mixer. Deposited liquid in the basin can travel from the basin and to the battery paste mixer by way of the pipe.

An apparatus for providing a liquid component as a first starting component of a bone cement dough from two starting components, comprising a receptacle in which a tank containing the liquid component can be stored, an opening means for opening the tank, a reservoir, fluidically connected to the receptacle, for receiving the liquid component from the tank, at least one port for fluidically connecting the apparatus to a syringe in which a powder component can be stored as a second starting component of the bone cement dough, and at least one conducting means which fluidically connects the reservoir and the at least one port to one another.

One aspect is a method for producing a bone cement from monomer liquid and cement powder using a depressurization device. The method is performed using a device comprising a cartridge having a drive piston, and a central piston being permeable to gases and the monomer liquid and impermeable to the cement powder and being arranged between the drive piston and a cartridge head. The method comprising the steps of expelling residual gases into the surroundings of the device by means of the movement of the drive piston; displacing gases between the powder particles with the inflowing monomer liquid; and depressurizing a cavity of the cartridge, by partially removing the contained monomer liquid. The invention also relates to such a device for mixing a bone cement, with a depressurization device.