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US 8,408,250 B2Granted
Bone replacement material mixing and delivery devices and methods of use
AssigneeWarsaw Orthopedic, Inc.
InventorWilliam F. McKay
Life of this patent
Estimating the term…
Abstract
Bone cement mixing and delivery devices and methods of using the devices are provided. The bone cement mixing and delivery devices and methods comprise a container having a bottom opening that can be sealed by a spacer in a syringe where movement of the plunger of the syringe moves the spacer away from the bottom opening in the container to dispense bone cement into the syringe. In some embodiments, the devices and methods increases efficiency and reduce the mess associated with transferring the bone cement to the syringe for delivery to a patient.
Claims20
A bone replacement material mixing and delivery device, comprising:
- a container for mixing and holding bone replacement material, the container having a top opening for addition of bone replacement material, a bottom surface, and at least one bottom opening disposed in the bottom surface of the container for transfer of bone replacement material out of the bottom surface of the container;
- a syringe configured to receive bone replacement material from the container for delivery to a patient, the syringe having a tip configured to be removably coupled to the at least one bottom opening of the container, the syringe comprising a plunger slidable within the syringe, the plunger having a first end and a second end, the second end configured for moving the first end of the plunger to at least a retracted position and an extended position;
- and
- at least one spacer disposed within the syringe between the tip of the syringe and the first end of the plunger, the spacer movable with the plunger and configured to contact the at least one bottom opening of the container and seal it when the plunger is moved in the retracted position so as to prevent transfer of bone replacement material into the syringe, and the spacer configured to allow transfer of bone replacement material into the syringe when the first end of the plunger is moved to the extended position to open the at least one bottom opening of the container.
1 more element
A bone cement mixing device, comprising:
- a container for mixing and holding bone cement, the container having a top opening for addition and mixing of bone cement, a bottom surface, and at least one bottom opening disposed in the bottom surface of the container for transfer of bone cement out of the bottom surface of the container;
- a syringe configured to receive bone cement from the container, the syringe having a tip configured to be removably coupled to the at least one bottom opening of the container, the syringe comprising a plunger slidable within the syringe, the plunger having a first end and a second end, the second end configured for moving the first end of the plunger to at least a retracted position within the tip of the syringe and an extended position;
- and
- at least one spacer disposed within the syringe between the tip of the syringe and the first end of the plunger, the spacer contacting the first end of the plunger and movable with the plunger, the spacer being a shape complimentary to the tip of the syringe and a portion of the syringe under the tip and configured to contact the at least one bottom opening of the container and seal it when the plunger is moved in the retracted position so as to prevent transfer of bone cement into the syringe, and the spacer configured to allow transfer of bone cement into the syringe when the first end of the plunger moving to the extended position to move the spacer away from the at least one bottom opening of the container.
1 more element
A method for mixing and dispensing bone cement, the method comprising:
- providing a container to mix and dispense bone cement, the container having a top opening for addition of bone cement, a bottom surface, and at least one bottom opening disposed in the bottom surface of the container for dispensing bone cement out of the bottom surface of the container when it is mixed;
- providing a syringe configured to receive bone cement dispensed from the container, the syringe having a tip configured to be removably coupled to the at least one bottom opening of the container, the syringe comprising a plunger slidable within the syringe, the plunger having a first end and a second end, the second end configured for moving the first end of the plunger to at least a retracted position and an extended position, the syringe containing at least one spacer disposed within the syringe between the tip and the first end of the plunger, the spacer movable with the plunger and configured to contact the at least one bottom opening of the container and seal it when the plunger is moved in the retracted position so as to prevent dispensing of bone cement into the syringe, and the spacer configured to allow dispensing of bone cement into the syringe when the first end of the plunger is moved to the extended position to open the at least one bottom opening of the container;
- coupling the syringe tip to the at least one bottom opening of the container;
- adding bone cement to the top opening of the container and mixing it in the container;
- and
- moving the plunger to the extended position to move the spacer away from the at least one bottom opening of the container to dispense the bone cement into the syringe.
3 more elements
Dependencies are inferred from the claim text.