Bone cement applicator with closure system driven by bone cement dough
First Claim
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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Accused Products
Abstract
One aspect relates to 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. The cartridge has a multi-part closure system including a discharge opening. 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 the movement of the at least two parts of the closure system relative to one another. The movement of the mixed bone cement dough is drivable by a pressure on the bone cement dough.
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Citations
24 Claims
- 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.
- 16. 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 a discharge tube with the discharge opening is mounted movably relative to the cartridge, wherein a stopper, which closes the discharge tube, is fixedly connected to the cartridge and the discharge tube is movable relative to the stopper by the pressure on the bone cement dough and is thus openable.
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18. A method for applying a bone cement, comprising:
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exerting a pressure onto a bone cement dough in a cartridge closed by a closure system; exerting a force conveyed from the bone cement dough by the pressure onto a part of the closure system movable relative to the cartridge, thus moving the part of the closure system relative to the cartridge; and opening the cartridge on account of the movement of the part of the closure system, driving out the bone cement dough from the opened cartridge with the same pressure. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification