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US 2014/0180346 A1Published application
Devices and methods for dynamic fixation of skeletal structure
AssigneeSamy Abdou
InventorSamy Abdou
Life of this patent
Estimating the term…
Abstract
The disclosed screw assemblies include a screw that attaches onto the bone, a housing member that connects and inter-locks the bone screw to the rod, and one or more looking members that permit immobilization of various components of the assembly relative to one another while still permitting some relative movement. The bone screws and bone screw assemblies described herein permit flexible stabilization of the spine.
Claims29
-19. (canceled)
A bone fixation assembly, comprising:
- an interconnecting member;
- a bone fastener comprising a head segment and a shank configured to extend therefrom, said head segment configured to couple to a driver, said driver configured to advance said bone fastener onto a bone;
- a first housing comprising:
- a top surface, an opposing bottom surface, and at least one interconnecting side surface;
- a first internal bore configured to extend from said top surface to said bottom surface along a first axis;
- and
- at least a portion of a seat configured to seat said head segment of said bone fastener;
- a second housing comprising:
- a top surface, an opposing bottom surface, and at least two opposing side surfaces configured to connect said top and bottom surfaces;
- a first bore configured to extend from a first one of said side surfaces to an opposing one of said side surfaces, said first bore sized to seat said interconnecting member;
- and
- a second bore configured to extend from said top surface to said bottom surface along a second axis, said second bore sized to permit advancement of said driver therethrough;
- and
- a locking feature configured to transition from a first state to a second state, said first state configured to enable said first housing to be movable relative to said second housing, and said second state configured rigidly affix said first housing relative to said second housing;
- wherein said first housing is configured to couple to said second housing such that said top surface thereof is aligned to substantially face said bottom surface of said second housing;
- and
- wherein said first and second housing are configured to attain a range of positions relative one another, at least one of said range of positions comprising a position such that said first axis of said first housing is coaxially aligned with said second axis of said second housing.
14 more elements
A bone fixation assembly, comprising:
- an interconnecting member;
- a bone fastener comprising a head segment and a shank configured to extend therefrom, said head segment configured to couple to a driver, said driver configured to advance said bone fastener onto a bone;
- a first housing comprising:
- opposing top and bottom surfaces;
- a first internal bore configured to extend from said top surface to said bottom surface along a first axis;
- and
- a seat, at least a portion thereof configured to seat said head segment of said bone fastener;
- and
- a second housing comprising:
- opposing top and bottom surfaces;
- opposing first and second side surfaces;
- a first bore configured to extend from said first side surface to said second side surface, said first bore sized to seat said interconnecting member;
- and
- a second bore configured to extend from said top surface to said bottom surface along a second axis, said second bore sized to permit said advancement of said driver therethrough;
- and
- a locking feature configured to transition from a first state to a second state, said first state configured to enable said first housing to move relative to said bone fastener, and said second state configured to cause said first housing to be immovably positioned relative to said bone fastener;
- wherein said first housing configured to movably couple to said second housing such that said top surface of said first housing is substantially aligned to face said bottom surface of said second housing;
- and
- wherein said first housing is configured to attain a range of positions relative to said second housing, at least one of said range of positions comprising said first axis of said first housing being coaxially aligned with said second axis of said second housing.
16 more elements
A bone fixation assembly, comprising:
- an interconnecting member;
- a bone fastener comprising a head segment and a shank configured to extend therefrom, said head configured to couple to a driver configured to advance said fastener onto a bone;
- a first housing comprising:
- a top surface, an opposing bottom surface and at least one interconnecting side surface;
- a first internal bore configured to extend from said top to said bottom surface along a first axis;
- and
- at least a portion of a seat configured to accept at least said head segment of said bone fastener;
- a second housing comprising:
- a top surface, an opposing bottom surface and at least one interconnecting side surface;
- a first bore configured to extend from a side surface to an opposing side surface of said second housing member, said first bore sized to seat said interconnecting member;
- and
- a second bore configured to extend from said top to said bottom surface along a second axis, said second bore sized to permit advancement of said driver therethrough;
- and
- a locking feature configured to transition from a first state to a second state, said first state configured to enable said second housing to be movable relative to said interconnecting member, and said second state configured to cause said second housing to be rigidly immobilized relative to said interconnecting member;
- wherein said first housing is configured to be movably coupled to said second housing with said top surface of said first housing aligned to substantially face said bottom surface of said second housing;
- and
- wherein said first housing is configured to comprise a range of positions relative to said second housing, at least one of said range of positions comprising said first axis of said first housing being coaxially aligned with said second axis of said second housing.
14 more elements
A bone fixation assembly, comprising:
- an interconnecting member;
- a bone fastener comprising a head segment and a shank configured to extend therefrom, said head segment configured to couple to a driver adapted to advance said fastener onto a bone;
- a first housing comprising:
- at least two surfaces configured to substantially oppose one another;
- a first internal bore configured to extend from one of said at least two surfaces to the other of said at least two surfaces along a first axis;
- and
- a seat configured to receive at least a portion of said head segment of said bone fastener;
- a second housing comprising:
- two first surfaces configured to substantially oppose one another;
- two second surfaces configured to substantially oppose one another, and configured to connect said two first surfaces to one another;
- a first bore configured to extend from a first of said two second surfaces to a second of said two second surfaces, said first bore sized to receive said interconnecting member;
- and
- a second bore configured to extend from a first of said two first surfaces to a second of said two first surfaces along a second axis, said second bore sized to permit advancement of said driver therethrough;
- and
- a locking feature configured to transition from a first state to a second state, said first state configured to enable said interconnecting member to be movable relative to said head segment of said bone fastener, and said second state configured to cause said interconnecting member to be rigidly immobilized relative to said head segment of said bone fastener;
- wherein said first housing is movably coupled to said second housing such that a first of said at least two surfaces thereof is aligned to face one of said two first surfaces of said second housing;
- and
- wherein said first housing is configured to have a range of positions relative to said second housing, at least one of said range of positions comprising said first axis of said first housing being coaxially aligned with said second axis of said second housing.
15 more elements
Dependencies are inferred from the claim text.