#$%^&*AU2010202878B220140814.pdf#####BONE CEMENT SYSTEM Abstract A bone cement system (100) has a mixing facility (10) for the mixing and s dispensing of bone cement, a reservoir container (112) for a monomer, and a conveying means (122), whereby the mixing facility (10) comprises a mixing cylinder (20)； the mixing cylinder (20) stores a bone cement powder； the monomer can be conveyed from the reservoir container (112) into the mixing cylinder (20) by the conveying means (122)； a sieve element is (4) is arranged between the reservoir container (112) and the mixing to facility (10) in order to prevent ingress of the bone cement powder from the mixing cylinder (20) into the conveying means (122)； the mixing device (10) comprises a dispensing opening (23) for dispensing a bone cement that is mixed from the bone cement powder and the monomer. The dispensing opening (23) comprises a shield (1) having at least one throughi5 opening (2), and a ratio of an area of the through-opening (2) to the area of the sieve element (4) is at least I to 3, and a distance between the shield (1) and the sieve element (4) is at least 1 mm. (refer to Fig. 2)1/3 100 52 110 10 30 40 112 5 50 20 51 35 21 22,23 115 122 120 Fig. 1
