Bone cement system

A bone cement system (100) comprising a mixing facility (10) for mixing and dispensing of bone cement, a reservoir container (112) for a monomer, and a conveyor (122), wherein

• the mixing facility (10) comprises a mixing cylinder (20);
• the mixing cylinder (20) stores a bone cement powder;
• the conveyor (122) conveys the monomer from the reservoir container (112) into the mixing cylinder (20);
• a sieve element (4) is arranged between the reservoir container (112) and the mixing facility (10) to prevent ingress of the bone cement powder from the mixing cylinder (20) into the conveyor (122), the sieve element (4) having a mesh size between 5 μm and 30 μm;
• the mixing facility (10) comprises a dispensing opening (23) for dispensing the bone cement mixed from the bone cement powder and the monomer;
• the dispensing opening (23) comprises a shield (1) having at least one through-opening (2);
• and
• a ratio of an area of the through-opening (2) to the area of the sieve element (4 ) is at most 1 to 3, and a distance between the shield (1) and the sieve element (4) is between 1 mm and 10 mm.