Tools and methods for creating cavities in bone
First Claim
1. A surgical instrument for piercing and cutting tissue and creating a percutaneous path to bone comprising:
- a shaft having a longitudinal axis and proximal and distal ends having a length sufficient to create a percutaneous path to bone, a cross-section normal to the longitudinal axis, a plurality of surfaces aligned with the longitudinal axis, and a tip on the distal end of the shaft, the tip having a plurality of facets that intersect to form a point for piercing tissue, at least two of the facets intersecting to form an edge for cutting tissue, and at least one other surface adjoining the cutting edge, wherein, the cross-section of the shaft varies along the length of the shaft, and a first cross-section at a first location along the length of the shaft has a first area and a second cross-section at a second location along the length of the shaft has a second area, the first area greater than the second area, and the second location is situated between the first location and the proximal end of the shaft.
5 Assignments
0 Petitions
Accused Products
Abstract
Tools for use in the creation of cavities in bones. The tools include a probe, a cannula that provides percutaneous passageway to the interior of the treated bone, a bone tamp, and a system for delivering bone filler material into the cavity. The bone tamp has a shaft that is inserted into the bone through the cannula. The end of the shaft that is inserted into the bone may have a flapper tip that extends out of axial alignment with the shaft upon deployment by the physician. Once the tip is deployed, the bone tamp can be rotated to form the cavity. The cavity may then be treated with a medicament, filled with bone filler material, or both. Other tools and materials described herein may be used to lift or restore the treated bone closer to its natural anatomy.
236 Citations
24 Claims
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1. A surgical instrument for piercing and cutting tissue and creating a percutaneous path to bone comprising:
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a shaft having a longitudinal axis and proximal and distal ends having a length sufficient to create a percutaneous path to bone, a cross-section normal to the longitudinal axis, a plurality of surfaces aligned with the longitudinal axis, and a tip on the distal end of the shaft, the tip having a plurality of facets that intersect to form a point for piercing tissue, at least two of the facets intersecting to form an edge for cutting tissue, and at least one other surface adjoining the cutting edge, wherein, the cross-section of the shaft varies along the length of the shaft, and a first cross-section at a first location along the length of the shaft has a first area and a second cross-section at a second location along the length of the shaft has a second area, the first area greater than the second area, and the second location is situated between the first location and the proximal end of the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A surgical instrument for separating tissue and creating a percutaneous path to bone comprising:
a shaft having a longitudinal axis and proximal and distal ends, the shaft having a length sufficient to create a percutaneous path to bone, a cross-section normal to the longitudinal axis, at least two surfaces substantially aligned with the longitudinal axis, and a tip connected to the distal end of the shaft, the tip having a plurality of facets that form a surface for separating tissue, at least two of the facets intersecting to form a curved edge, and at least one other surface adjoining the curved edge and facets, wherein, the cross-section of the shaft varies along the length of the shaft, and a first cross-section at a first location along the length of the shaft has a first area and a second cross-section at a second location along the length of the shaft has a second area, the first area greater than the second area, and the second location is situated between the first location and the proximal end of the shaft.
Specification