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Bone cement applicator with closure system driven by bone cement dough

  • US 10,639,088 B2
  • Filed: 11/09/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 11/11/2016
  • Status: Active Grant
First Claim
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1. A bone cement applicator for mixing and applying a bone cement, with which the starting components of the bone cement is mixable in a closed cartridge to form a bone cement dough, wherein the cartridge has a multi-part closure system comprising a discharge opening, wherein at least two parts of the closure system are movable relative to one another, driven by a movement of the mixed bone cement dough, and the discharge opening is opened by the movement of the at least two parts of the closure system relative to one another, and wherein the movement of the mixed bone cement dough is drivable by a pressure on the bone cement dough, wherein the closure system comprises a wall that is gas-permeable, but impermeable for powder and liquids, wherein the wall is arranged in the cartridge in such a way that the pressure of the bone cement dough acts on the wall, and thus moves a stopper or a cover with the wall relative to the cartridge and thus opens the cartridge, or thus moves a discharge opening with the wall relative to the cartridge and thus removes a stopper, which is fixedly connected to the cartridge, from the discharge opening, and wherein the wall comprises a porous plate.

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