Systems and methods for accessing and treating diseased or fractured bone employing a guide wire
First Claim
1. A device for treating bone comprising:
- a guide wire including a distal end having an outside diameter;
a guide wire component extending beyond the distal end having an enlarged outside diameter greater than the outside diameter of the distal end;
an expandable structure, the expandable structure incorporating a lumen sized to accommodate the guide wire; and
at least a portion of a diameter of the lumen being smaller than the enlarged outside diameter of the guide wire component.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for treating bone employ an expandable body sized to be inserted into bone over a guide wire, without need of an access cannula, and undergo expansion in cancellous bone to compact cancellous bone. The systems and methods further include one or more other instruments sized to pass over the guide wire. The other instruments can comprise, e.g., a cannula, or a device for injecting material into bone. The systems and methods can make use of a special guide wire assembly that includes a guide wire having an enlarged component or tip element on its distal end that can be used to engage the distal end of a bone treatment tool in response to a pulling motion on the guide wire. The pulling motion on the guide wire serves to withdraw the bone treatment tool. The enlarged component or tip element on the distal end of the guide wire can enable the withdrawal of an inner centering body from an outer cannula body after deployment. After withdrawal of the inner body, the outer body can be used, e.g., to guide a bone treatment tool into a bone, or to convey material into bone
225 Citations
25 Claims
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1. A device for treating bone comprising:
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a guide wire including a distal end having an outside diameter;
a guide wire component extending beyond the distal end having an enlarged outside diameter greater than the outside diameter of the distal end;
an expandable structure, the expandable structure incorporating a lumen sized to accommodate the guide wire; and
at least a portion of a diameter of the lumen being smaller than the enlarged outside diameter of the guide wire component. - View Dependent Claims (2, 3, 4, 5)
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6. A bone access assembly comprising:
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a guide wire;
an outer body having an interior lumen;
an inner body sized to occupy the interior lumen, the inner body having an interior passage sized to pass over the guide wire, the inner body having a distal end; and
the guide wire having an enlarged distal end which engages the distal end of the inner body in response to a pulling motion on the guide wire to move the inner body proximally through the outer body for removal from the interior lumen. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A system for treating bone comprising
a guide wire, and an expandable body sized to be inserted into bone over the guide wire and undergo expansion in cancellous bone to compact cancellous bone.
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16. A method for treating bone comprising the steps of
deploying a guide wire into bone, deploying an expandable body over the guide wire into bone, and expanding the expandable body in bone to compact cancellous bone.
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18. A method of accessing bone comprising the steps of:
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deploying a guide wire into bone;
deploying an expandable structure having a lumen extending therethrough over the guide wire and into bone;
expanding the expandable structure within the bone; and
removing the expandable structure from the bone. - View Dependent Claims (19)
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20. A method of accessing bone comprising the steps of:
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deploying a guide wire having an enlarged distal end into bone;
deploying a bone access assembly over the guide wire and into bone, the bone access assembly comprising an outer body having an interior lumen, an inner body sized to occupy the interior lumen, the inner body having an interior passage sized to pass over the guide wire, and the inner body having a distal end; and
removing the inner body proximally from the outer body by pulling on the guide wire to bring the enlarged distal end into engagement with the distal end of the inner body, the interior lumen of the outer body forming a bone access passage. - View Dependent Claims (21)
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22. A method of compacting bone, comprising the steps of:
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deploying a guide wire into bone;
passing an instrument over the guide wire, the instrument including an expandable structure;
expanding the expandable structure to compact cancellous bone and create a cavity; and
removing the instrument. - View Dependent Claims (23, 24, 25)
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Specification