Tools and methods for creating cavities in bone
First Claim
1. A surgical instrument having a longitudinal axis for creating a cavity in bone, comprising:
- a handle;
a first member having proximal and distal ends, the proximal end of the first member fixed to the handle, and the first member having a groove running at least part of a length between the proximal and distal ends of the first member;
a second member having proximal and distal ends and slidably engaged within the groove of the first member;
a tip having proximal and distal ends for creating a cavity in bone, the tip being fastened to the distal end of the first member by an articulating hinge; and
a collar located between the handle and the tip, and positioned around at least a portion of the first and second members, the collar having an internal surface configured to permit rotation of the collar about the first and second members;
wherein, as the collar is rotated in a first direction, the internal surface of the collar pushes the second member toward the distal end of the first member causing the tip to articulate, and wherein the hinge is operatively associated with the second member to provide a first mode allowing the tip to articulate freely between an initial position and a fully deployed position, a second mode that substantially immobilizes the tip in the fully deployed position, and a third mode wherein the second member blocks the tip from articulating freely between the initial position and the fully deployed position.
1 Assignment
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.
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Citations
44 Claims
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1. A surgical instrument having a longitudinal axis for creating a cavity in bone, comprising:
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a handle; a first member having proximal and distal ends, the proximal end of the first member fixed to the handle, and the first member having a groove running at least part of a length between the proximal and distal ends of the first member; a second member having proximal and distal ends and slidably engaged within the groove of the first member; a tip having proximal and distal ends for creating a cavity in bone, the tip being fastened to the distal end of the first member by an articulating hinge; and a collar located between the handle and the tip, and positioned around at least a portion of the first and second members, the collar having an internal surface configured to permit rotation of the collar about the first and second members; wherein, as the collar is rotated in a first direction, the internal surface of the collar pushes the second member toward the distal end of the first member causing the tip to articulate, and wherein the hinge is operatively associated with the second member to provide a first mode allowing the tip to articulate freely between an initial position and a fully deployed position, a second mode that substantially immobilizes the tip in the fully deployed position, and a third mode wherein the second member blocks the tip from articulating freely between the initial position and the fully deployed position. - 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, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A surgical instrument having a longitudinal axis for creating a cavity in bone, comprising:
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first and second members having proximal and distal ends, a handle adjoining the proximal end of the first member, the handle having a substantially fixed orientation with respect to the first member, a tip having proximal and distal ends for creating a cavity in bone, a fastening element for securing the tip to the first member, and a collar located between the handle and the tip, and positioned around at least a portion of the first and second members, the collar having an internal surface configured to permit rotation of the collar about the first and second members; a portion of the first member, the tip, and the fastening element forming a joint, wherein, as the collar is rotated in a first direction, the internal surface of the collar pushes the second member toward the distal end of the first member causing the tip to articulate, and wherein the joint is operatively associated with the second member to provide a first mode allowing the joint to articulate freely between an initial position and a fully deployed position, a second mode that substantially immobilizes the joint in the fully deployed position, and a third mode, wherein the second member blocks the tip from articulating freely between the initial position and the fully deployed position.
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Specification