Vacuum mixing device for bone cement and method for mixing bone cement in said device
First Claim
Patent Images
1. A mixing device for preparing bone cement, comprising:
- a mixing container;
a monomer container attached to the mixing container and having first and second telescoping parts, the monomer container being moveable relative to the mixing container,wherein one of the first and second telescoping parts of the monomer container includes at least one catch hook and the other of the first and second telescoping parts of the monomer container includes at least one catch lug for engagement with the respective at least one catch hook such that the monomer container is locked in position relative to the mixing container.
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Abstract
The application relates to a vacuum mixing device for bone cement, where the monomer is pressed into a mixing container due to the surrounding vacuum and a gas volume present in the monomer container.
157 Citations
20 Claims
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1. A mixing device for preparing bone cement, comprising:
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a mixing container; a monomer container attached to the mixing container and having first and second telescoping parts, the monomer container being moveable relative to the mixing container, wherein one of the first and second telescoping parts of the monomer container includes at least one catch hook and the other of the first and second telescoping parts of the monomer container includes at least one catch lug for engagement with the respective at least one catch hook such that the monomer container is locked in position relative to the mixing container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mixing device for preparing bone cement, comprising:
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a rod; a mixing container; a monomer container attached to the mixing container via the rod and including first and second telescoping parts, the monomer container and the rod being moveable relative to the mixing container; a cannula attached to the monomer container and having an end received in a channel of the rod, the cannula being configured to pierce a monomer vial when the monomer vial is disposed in the monomer container, wherein when the monomer vial is pierced, monomer flows via the cannula into the mixing container; and a pin for engagement with the monomer container, the pin being disengageable from and removable from the monomer container, wherein, when the pin is engaged with the monomer container, the first telescoping part of the monomer container does not move relative to the second telescoping part of the monomer container, and, upon removal of the pin, the first telescoping part of the monomer container moves relative to the second telescoping part of the monomer container. - View Dependent Claims (14, 15, 16, 17)
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18. A mixing device for preparing bone cement, comprising:
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a mixing container; a monomer container attached to the mixing container and having first and second telescoping parts, the monomer container being moveable relative to the mixing container; and a pin for engagement with the monomer container, the pin being disengageable from and removable from the monomer container, wherein, when the pin is engaged with the monomer container, the first telescoping part of the monomer container is prevented from moving relative to the second telescoping part of the monomer container, and, upon removal of the pin, the first telescoping part of the monomer container slides relative to the second telescoping part of the monomer container.
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19. A mixing device for preparing bone cement, comprising:
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a rod; a mixing container; a monomer container attached to the mixing container via the rod, the monomer container and the rod being moveable relative to the mixing container; and a cannula attached to the monomer container and having an end received in a channel of the rod, the cannula being configured to pierce a monomer vial when the monomer vial is disposed in the monomer container, wherein when the monomer vial is pierced, monomer flows via the cannula into the mixing container, wherein the mixing container includes a plate, and wherein the rod of the monomer container is guided through the plate, the plate being detachable such that the plate is moveable to expel prepared bone cement.
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20. A mixing device for preparing bone cement, comprising:
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a rod; a mixing container; a monomer container attached to the mixing container via the rod, the monomer container and the rod being moveable relative to the mixing container; a monomer vial disposed in the monomer container; and a cannula attached to the monomer container and having an end received in a channel of the rod, the cannula being configured to pierce the monomer vial, wherein when the monomer vial is pierced, monomer flows via the cannula into the mixing container, wherein the mixing container is connectable to a vacuum source, the monomer vial being filled at least partially with a volume of gas, and wherein when a vacuum is present in the mixing container and the cannula pierces the monomer vial, the monomer flows from the monomer container into the mixing container to at least a predefined fill level.
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Specification