METHODS AND DEVICES FOR STABILIZING BONE COMPATIBLE FOR USE WITH BONE SCREWS
First Claim
Patent Images
1. A stabilization device configured to self-expand in bone and to support a bone screw therein, the stabilization device comprising:
- an elongate shaft having a plurality of self-expanding struts extendable therefrom, the shaft adapted to be positioned within cancellous bone and having an expanded deployed profile and a collapsed delivery profile; and
a bone screw attachment region;
wherein the shaft is adapted to cut through cancellous bone during expansion from the collapsed delivery profile to the expanded deployed profile.
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Abstract
Described herein are devices, systems, and methods for treating bone. Self-expanding stabilization devices for repairing bone may include one or more bone screw attachment regions for attaching a bone screw after or before inserting the device into a subject. The stabilization device may be attached using an inserter. These stabilization devices may be used with bone screws having multiple parts or components. Thus, the stabilization devices described herein may be used to help secure one or more bone screws (in particular pedicle screws) in a subject.
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Citations
39 Claims
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1. A stabilization device configured to self-expand in bone and to support a bone screw therein, the stabilization device comprising:
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an elongate shaft having a plurality of self-expanding struts extendable therefrom, the shaft adapted to be positioned within cancellous bone and having an expanded deployed profile and a collapsed delivery profile; and a bone screw attachment region; wherein the shaft is adapted to cut through cancellous bone during expansion from the collapsed delivery profile to the expanded deployed profile. - View Dependent Claims (2, 3, 4)
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5. A stabilization device configured to self-expand in bone and to further support a bone screw or screws, the stabilization device comprising:
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an elongate shaft having two or more continuous curvature of bending struts, wherein the struts extend from the shaft more in the deployed configuration than in the delivery configuration; a proximal region having a first releasable attachment configured to attach to an inserter; a distal region having a second releasable attachment configured to attach to the inserter; and a bone screw attachment region configured to secure to a bone screw. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A self-expanding stabilization device for stabilizing a body cavity, the device comprising:
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an elongate shaft having a plurality of bending struts extendable therefrom, the shaft adapted to be positioned within cancellous bone and having an expanded deployed profile and a collapsed delivery profile; wherein the shaft is adapted to cut through cancellous bone during expansion from the collapsed delivery profile to the expanded deployed profile;
further wherein the shaft is adapted to abut a surface of cortical bone adjacent the cancellous bone without passing there through; anda bone screw attachment region. - View Dependent Claims (20)
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21. A system for stabilizing a vertebral body, the system comprising:
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a stabilization device having an elongate shaft, a bone screw attachment region, and a plurality of struts extending therefrom, the stabilization device configured to expand from a compressed delivery configuration to an expanded deployed configuration; and an inserter having a first stabilization device attachment region, adapted to releasably secure to the proximal region of the stabilization device, and a second stabilization device attachment region adapted to secure to the distal region of the stabilization device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of treating a bone comprising:
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delivering a self-expanding device within a cancellous bone;
wherein the device has an elongate shaft, a bone screw attachment region, and a plurality of struts extending therefrom;allowing the device to expand within the cancellous bone so that a cutting surface of the device cuts through the cancellous bone; and securing a bone screw in the bone screw attachment region of the device. - View Dependent Claims (32, 33, 34, 35)
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36. A multi-part bone screw comprising:
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a first bone screw assembly having an elongate shaft that is threaded along the outer surface of the shaft; a second bone screw assembly configured to mate over the first bone screw assembly, wherein the second bone screw assembly has a threaded outer surface configured to contact bone, and a threaded inner channel that is configured to thread onto the outer surface of the first bone screw assembly. - View Dependent Claims (37, 38, 39)
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Specification