Merck Patent Gesellschaft MIT Beschrankter Haftung

Rainer Specht

Berthold Nies

Gunter Hauke

Ralf Krotz

Reiner Funk

Peter Martin

Sabine Troster

A process and device for producing sterile-packed bone cement, wherein the powder component is gas-sterilized in containers that are used for packing.

Process and device for producing sterile-packed bone cement

A process for the preparation of porous bone replacement materials which have a partly or completely interconnecting pore system with a volume content of 5 to 60%. The bone replacement material is prepared from a mixture of a solid component, a liquid component based on acrylate/methacrylate and coarse-particled granules of a biocompatible material with an average particle diameter of 0.5 to 10 mm.

Porous bone replacement materials

A device for mixing and discharging bone cement has a mixing cylinder which consists of two cylinder parts and in which an openworked mixing plunger can be moved axially. The lower cylinder part is sealed off by a discharging plunger. A separating plunger is arranged axially displaceably in the mixing cylinder between the mixing plunger and the discharging plunger, which separating plunger seals off the one cylinder part before the two cylinder parts are connected. The separating plunger has through-flow channels through which a liquid monomer can flow from the lower cylinder part to a pulverulent polymer in the upper cylinder part at the start of the mixing procedure.

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Furth, Germany

Rainer Specht