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Vacuum mixing device with operating element and pump for mixing polymethylmethacrylate bone cement

  • US 10,022,687 B2
  • Filed: 12/07/2016
  • Issued: 07/17/2018
  • Est. Priority Date: 12/07/2015
  • Status: Expired due to Fees
First Claim
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1. A vacuum mixing device for mixing polymethylmethacrylate bone cement from a monomer liquid and a cement powder, the vacuum mixing device comprisingat 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, which is arranged movably in the interior,a receptacle for receiving a separate container containing the monomer liquid or comprising an integrated container containing the monomer liquid, an opening device, that is arranged in the region of the receptacle in a manner movable relative to the receptacle such 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 pump, in which a movable plunger for generating a negative pressure is arranged and delimits a pump chamber of the pump, anda connection line, which connects the interior of the at least one cartridge to the pump chamber of the pump, whereinthe vacuum mixing system comprises an operating element that is operatable from outside, wherein the plunger in the pump is movable manually by means of the operating element, and further whereinthe opening device is movable relative to the receptacle or relative to the integrated container by means of the same operating element, andthe mixing device in the interior of the cartridge is movable by means of the same operating element in order to mix the content in the interior of the cartridge.

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