An agitator assembly for mixing a product in a container is provided; the assembly may include a shaft having a distal end and an opposite proximal end. An agitator head may be attached to the distal end of the shaft. The agitator head may include a plurality of paddles extending from a base, wherein at least one of the paddles is made from a flexible material. The agitator head may include four paddles, wherein a first paddle and a second paddle may be generally aligned along a first plane, and a third paddle and a fourth paddle may be generally aligned along a second plane. The first plane may be generally perpendicular to the second plane. The first paddle and the second paddle may include a shape that is generally smaller relative to a shape of the third paddle and the fourth paddle.

The invention relates to a device for circulating wastewater received in a tank, in which device a conical or hyperboloid-like stirring body is mounted on a vertical stirring shaft, wherein the stirring body is composed from a plurality of segments produced from metal along radially extending joining zones.

A mixing device and methods for making bone cement. A piston (156) of the mixing device is located in a first region (158) of a chamber (112) such that a mixing paddle (154) rotates to mix bone cement components at a first pressure to make a bone cement mixture. The piston (156) is moved passed an inlet opening (136) to be located within a second region (160) of the chamber (112) to compress the bone cement mixture to a second pressure greater than the first pressure to compress the bone cement mixture and make the bone cement. The bone cement may be transferred to a delivery device. The mixing device may include features that automatically initiate the compression and transferring phases after completion of the mixing phase, and further include features that automatically terminate the operational cycle. A three-step intuitive workflow utilizing the mixing device to improve efficiency in the surgical suite is also disclosed.

A mixer (1) comprises a drum (2) having at least one inlet (6) and one outlet (7). The mixer (1) furthermore comprises a drive (3) and a stirring shaft (4), which is arranged in the drum (2) and is coupled to the drive (3). Furthermore, the mixer (1) comprises a conveying device (5), which is arranged in the drum (2) and which is arranged on one and the same axis as the stirring shaft (4).

A mixing device and methods for making bone cement. A piston of the mixing device is located in a first region of a chamber such that a mixing paddle rotates to mix bone cement components at a first pressure to make a bone cement mixture. The piston is moved passed an inlet opening to be located within a second region of the chamber to compress the bone cement mixture to a second pressure greater than the first pressure to compress the bone cement mixture and make the bone cement. The bone cement may be transferred to a delivery device. The mixing device may include features that automatically initiate the compression and transferring phases after completion of the mixing phase, and further include features that automatically terminate the operational cycle. A three-step intuitive workflow utilizing the mixing device to improve efficiency in the surgical suite is also disclosed.