초록 ▼

A device (10) for mixing and dispensing bone cement includes a mixing cylinder (20), in which a mixing plunger (21) is arranged, the mixing plunger (21) being axially movable by an actuation rod (50) guided out in a sealed manner at a first cylinder end (30). A sealing plunger (42) is arranged in a

A device (10) for mixing and dispensing bone cement includes a mixing cylinder (20), in which a mixing plunger (21) is arranged, the mixing plunger (21) being axially movable by an actuation rod (50) guided out in a sealed manner at a first cylinder end (30). A sealing plunger (42) is arranged in a region of the first cylinder end (30), is axially movable on the actuation rod (50) and seals the mixing cylinder (20) in a gas-tight manner. A sterilization plunger (41) is arranged in the region of the first cylinder end (30) between the mixing plunger (21) and the sealing plunger (42), is axially movable on the actuation rod (50) separately from the sealing plunger (42), and seals the mixing cylinder (20) in a gas-permeable manner. The sterilization plunger (41) and the sealing plunger (42) form a two-part plunger system (40).

대표청구항 ▼

1. A device (10) for mixing and dispensing bone cement, the device comprising: a mixing cylinder (20) in which a mixing plunger (21) is arranged, the mixing plunger (21) being axially movable by an actuation rod (50) guided out in a sealed manner at a first cylinder end (30),a sealing plunger (42) a

1. A device (10) for mixing and dispensing bone cement, the device comprising: a mixing cylinder (20) in which a mixing plunger (21) is arranged, the mixing plunger (21) being axially movable by an actuation rod (50) guided out in a sealed manner at a first cylinder end (30),a sealing plunger (42) arranged in a region of the first cylinder end (30) being axially movable on the actuation rod (50) and configured to seal the mixing cylinder (20) in a gas-tight manner,a sterilization plunger (41) comprising a gas-permeable grid, arranged in the region of the first cylinder end (30) between the mixing plunger (21) and the sealing plunger (42), being axially movable on the actuation rod (50) separately from the sealing plunger (42) and configured to seal the mixing cylinder (20) in a gas-permeable manner, wherein the gas-permeable grid is adapted to allow only particles smaller than 5 μm to pass therethrough;wherein the sterilization plunger (41) and the sealing plunger (42) form a two-part plunger system (40) having a sterilization position (150) and a mixing position (155), wherein in the sterilization position (150) the sterilization plunger (41) seals the mixing cylinder (20) in the gas-permeable manner and the sealing plunger (42) does not seal the mixing cylinder (20) in the gas-tight manner, such that the plunger system (40) enables a sterilization agent to both flow into the mixing cylinder (20) to rinse bone cement powder therein and exit the mixing cylinder (20), and in the mixing position (155), sealing plunger (42) seals the mixing cylinder (20) in the gas-tight manner, and allows the bone cement powder to be rinsed by a binding agent. 2. The device (10) according to claim 1, wherein the plunger system (40) surrounds the actuation rod (50). 3. The device (10) according to claim 1, wherein the sealing plunger (42) can be plugged onto the sterilization plunger (41). 4. The device (10) according to claim 1, wherein the plunger system (40) can be pushed axially into the mixing cylinder (20) in order to dispense a bone cement prepared by mixing from the bone cement powder and the binding agent through a dispensing opening (23). 5. The device (10) according to claim 4, wherein the dispensing opening (23) comprises a connection thread. 6. The device (10) according to claim 1, wherein the actuation rod (50) has a predetermined breakage point (51). 7. The device (10) according to claim 1, wherein the sterilization plunger (41) has a reversibly sealable filling opening (69). 8. The device (10) according to claim 1, wherein at least one of the plunger system (40), the sterilization plunger (41) and the sealing plunger (42) has at least one vacuum connection (68). 9. A bone cement system (100) comprising (i) a device (10) for mixing and dispensing bone cement according to claim 1, said device further comprising a dispensing opening (23), (ii) a reservoir (110) for storing a binding agent therein, and (iii) a base (120), wherein configured to carry each of the reservoir (110) and the device (10), and to connect outflow of the reservoir (110) with the dispensing opening of the mixing cylinder (20) of the device (10). 10. The bone cement system (100) according to claim 9, wherein the base (120) comprises a coupler (121) for a non-positive and/or positive fit connection to the device (10). 11. The bone cement system (100) according to claim 10, wherein the coupler (121) connects to the dispensing opening (23) of the device (10). 12. The bone cement system (100) according to claim 9, wherein the reservoir (110) stores a reservoir container (112) for the binding agent. 13. The bone cement system (100) according to claim 12, wherein the reservoir (110) has a valve (115) to control and/or trigger an outflow of the binding agent from the reservoir container (112). 14. The bone cement system (100) according to claim 9, wherein the base comprises a conveyor (122) for flow of the binding agent from the reservoir container (112) into the mixing cylinder (20) of the device (10).