#$%^&*AU2011200103B220121206.pdf#####MIXING DEVICE AND A METHOD FOR PRODUCTION OF POLY(METHYL METHACRYLATE) BONE-CEMENT PASTES Abstract 5 A device is provided with which it is possible to produce poly(methyl methacrylate) bone-cement paste, which is degassed to the greatest possible extent while avoiding large-volume mixing containers and large cement volumes contained therein. The device comprises a tubular hollow body (10) having a first opening (30) on the input side and a second opening (20) on the output side, at least one rotatably-mounted shaft to (40) arranged in the axial direction in the tubular hollow body (10), thread turns (50) arranged axially along the outer side of the shaft (40). The shaft (40) has at least one section with thread turns (50) whose pitch decreases in the direction of the second opening (20), at least one stirring blade (60) arranged on the shaft (40), and rigid mixing elements (70) arranged on the inner side of the tubular hollow body (10).1/2 40 100 120 130 110 90 30 91 60 70 0 - - -- --~60 70 7 70 -- D - -- 14 0 140 l 20 10 95 80 Fig. 1
