Apparatus and methods for delivering compounds into vertebrae for vertebroplasty
First Claim
1. An apparatus for delivering bone cement into a vertebra, comprising:
- a cannula comprising a proximal end, a distal end having a size and shape for insertion into a vertebra, and a lumen extending between the proximal end and an opening in the distal end;
a delivery device comprising a barrel defining a cavity for receiving a flowable compound therein, a distal end comprising an outlet communicating with the cavity, the distal end being pivotally connected to the proximal end of the cannula such that outlet communicates with the lumen of the cannula.
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Accused Products
Abstract
An apparatus for delivering bone cement into a vertebra includes a cannula and a syringe pivotally coupled to the cannula. Preferably, the syringe is pivotally coupled to the cannula by a pivot fitting that may be detachable from one or both of the cannula and the syringe. The syringe includes a piston slidable in a barrel for advancing the bone cement through an outlet communicating with the cannula. A shaft and cable arrangement or a fluid-driven system may be used to advance the piston within the syringe. The cannula is inserted into a vertebra, and is connected to the syringe. The syringe is pivoted to a desired position, and bone cement is delivered from the syringe through the cannula and into the vertebra.
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Citations
36 Claims
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1. An apparatus for delivering bone cement into a vertebra, comprising:
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a cannula comprising a proximal end, a distal end having a size and shape for insertion into a vertebra, and a lumen extending between the proximal end and an opening in the distal end;
a delivery device comprising a barrel defining a cavity for receiving a flowable compound therein, a distal end comprising an outlet communicating with the cavity, the distal end being pivotally connected to the proximal end of the cannula such that outlet communicates with the lumen of the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for delivering bone cement into a vertebra of a patient, the method comprising:
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inserting a distal end of a cannula into the vertebra;
connecting a proximal end of the cannula to a delivery device comprising bone cement therein using a pivot fitting, the delivery device comprising a cable coupled to a piston within the delivery device;
pivoting the delivery device relative to the cannula to a desired position;
rotating the cable, thereby causing the piston to advance within the delivery device to deliver the bone cement from the delivery device through the cannula and into the vertebra; and
removing the cannula from the vertebra. - View Dependent Claims (19)
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20. A method for delivering a flowable compound into a hard tissue structure of a patient, the method comprising:
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inserting a distal end of a cannula into the tissue structure to be treated;
pivotally connecting a proximal end of the cannula to a delivery device comprising a flowable compound therein;
pivoting the delivery device relative to the cannula to a desired position;
delivering the compound from the delivery device through the cannula and into the tissue structure; and
removing the cannula from the tissue structure. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification