Device for mixing bone cement

Details Device for mixing bone cement Device for mixing bone cement

1976-03-15

1977-04-05

Scovronek, Joseph

Chemistry: physical processes

Physical processes

Crystallization

141 65, 220 9C, 220 17, 98115R, B01L 300

Patent

active

040159450

ABSTRACT:
A device for mixing methyl methacrylate monomer and methyl methacrylate polymer to form bone cement in a hospital operating room includes a bowl-shaped container, a replaceable resilient plastic bowl-shaped liner which fits in the bowl-shaped container, a fluid passageway formed between the liner and container and a deflector cap which covers the space between the upper end of the liner and the upper end of the container. Exhaust openings in the side wall of the liner place the interior of the liner in fluid flow communication with the fluid passageway. The methyl methacrylate monomer and polymer are mixed in the bowl-shaped liner. When an exhaust port on the side wall of the container is connected to a vacuum source the ambient atmosphere is drawn through an access opening in the deflector cap towards the interior of the liner to promote aeration of the bone cement reaction mixture and the excess methyl methacrylate monomer vapor admixed with air is evacuated from the mixing device through the exhaust openings, fluid passageway and exhaust port and thereby is prevented from escaping into the operating room.

REFERENCES:
patent: 1896951 (1933-02-01), Hahn
patent: 3070275 (1962-12-01), Bostrom
patent: 3376583 (1968-04-01), Frey

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