DISPOSITIF DE MELANGE A VIDE DOTE D'UN ELEMENT FONCTIONNEL, D'UNE POMPE A PRESSION ET D'UNE POMPE A VIDE SERVANT A MELANGER DU CIMENT ORTHOPEDIQUE PMMA
The invention relates to a vacuum mixing device for mixingpolymethylmethacrylatebone cement from a monomer liquid and a cement powder (9), the vacuum mixingdevice comprising at least one cartridge (6) comprising an evacuable interiorfor mixingof the bone cement (96), a mixing device (10) for mixing the content in theinterior of theat least one cartridge (6), which is arranged movably in the interior, areceptacle (2) forreceiving a separate container (54) containing the monomer liquid orcomprising anintegrated container containing the monomer liquid, an opening device (5),which isarranged in the region of the receptacle (2) in a manner movable relative tothereceptacle (2) so that, by moving the opening device (5), a separate container(54)arranged in the receptacle (2) is openable by means of the opening device (5),or theopening device (5) is arranged in the region of the integrated container in amannermovable relative to the integrated container so that, by moving the openingdevice (5),the integrated container is openable by means of the opening device (5), avacuumpump (3), in which a movable vacuum plunger (30) for generating a negativepressureis arranged and delimits a vacuum pump chamber (94) of the vacuum pump (3), apressure pump (3), in which a movable pump plunger (31) for conveying a liquidisarranged and delimits a pressure pump chamber (36) of the pressure pump (3), aconnection line (26), which connects the interior of the at least onecartridge (6) to thevacuum pump chamber (94) of the vacuum pump (3), and a fluid connection (70),whichconnects the interior of the at least one cartridge (6) to the pressure pumpchamber (36)of the pressure pump (3), wherein the vacuum mixing system comprises anoperatingelement (4) that is operatable from outside, wherein, by means of theoperating element(4), the vacuum plunger (30) in the vacuum pump (3) is movable manually, thepumpplunge
