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    • 31. 发明授权
    • Vacuum mixing device with operating element, pressure pump, and vacuum pump for mixing polymethylmethacrylate bone cement
    • US10065160B2
    • 2018-09-04
    • US15371345
    • 2016-12-07
    • Heraeus Medical GmbH
    • Sebastian VogtThomas Kluge
    • B01F3/14B01F13/06B01F11/00B01F13/00B01F15/00B01F15/02A61B17/88A61L24/06B01F3/12B01F7/16
    • A vacuum mixing device or system mixes polymethylmethacrylate bone cement from a monomer liquid and a cement powder. The device or system comprising at least one cartridge comprising an evacuable interior for mixing of the bone cement, a mixing device for mixing the content in the interior of the at least one cartridge, a receptacle for receiving a separate container containing the monomer liquid or comprising an integrated container containing the monomer liquid, an opening device, which is arranged in the region of the receptacle in a manner movable relative to the receptacle so that, by moving the opening device, a separate container arranged in the receptacle is openable by means of the opening device, or the opening device is arranged in the region of the integrated container in a manner movable relative to the integrated container so that, by moving the opening device, the integrated container is openable by means of the opening device, a vacuum pump, in which a movable vacuum plunger for generating a negative pressure is arranged and delimits a vacuum pump chamber of the vacuum pump, a pressure pump, in which a movable pump plunger for conveying a liquid is arranged and delimits a pressure pump chamber of the pressure pump, a connection line, and a fluid connection. The device or system further comprises an operating element that is operatable from outside, wherein, by means of the operating element, the vacuum plunger in the vacuum pump is movable manually, the pump plunger in the pressure pump is movable manually, the opening device is movable manually relative to the receptacle or relative to the integrated container, and the mixing device is movable manually in the interior of the cartridge.
    • 37. 发明授权
    • Device for mixing a bone cement with hollow space for monomer transfer
    • US11471204B2
    • 2022-10-18
    • US16705969
    • 2019-12-06
    • Heraeus Medical GmbH
    • Sebastian VogtThomas Kluge
    • A61B17/88B01F23/53B01F35/71B01F35/75A61B17/00B01F23/50B01F101/20
    • One embodiment relates to a device for the production of a bone cement dough from a monomer liquid and a cement powder comprising a cartridge with an internal space; a cartridge head with a dispensing opening; a conveying plunger that is arranged in the internal space of the cartridge and is supported in the internal space of the cartridge such that it is pushable in the direction of the dispensing opening; a dispensing plunger between the dispensing opening and the conveying plunger that is supported in the internal space of the cartridge such that it is pushable in the direction of the dispensing opening; a first hollow space, in which the cement powder is arranged; a second hollow space that is bordered by the dispensing plunger and the conveying plunger; a fluid opening that is arranged in the conveying plunger; a feedthrough that connects the first hollow space and the second hollow space to each other, and a closure means that is arranged on a rear side of the dispensing plunger. The closure means projects away from the dispensing plunger and is situated at a distance from the fluid opening. The fluid opening is closable with the closure means. The closure means is mobile in the closed fluid opening such that the fluid opening stays closed, while the conveying plunger is pushable further in the direction of the dispensing plunger.