Methods and instrumentation for distraction and insertion of implants in a spinal disc space
First Claim
Patent Images
1. An instrument for positioning an implant in a space between adjacent vertebrae, comprising:
- a housing;
a pair of opposing guide members coupled to said housing, each of said pair of guide members including a body with an outer surface and an opposite guide surface and an elongated slot opening therebetween, said slot extending along said respective guide member and opening at a distal end thereof, said distal ends being positionable in the space between vertebrae;
a spreader positioned between said pair of guide members, said spreader including a central body and a pair of opposite wings extending therefrom, each wing including a body slidingly received in said slot of a corresponding one of said pair of guide members and an enlarged outer end; and
a drive member coupled to said spreader and operable to forwardly advance said spreader toward said distal ends of said guide members.
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Abstract
Instruments for inserting an artificial disc implant in a space between adjacent bony portions include upper and lower guide members separated by a spreader with an implant positioned forwardly of the spreader. The spreader is movable forwardly between the guide members with a drive member to position the implant in a space between the bony portions while engaging at least a portion of the implant with at least one vertebra. The spreader contacts the adjacent bony portions to facilitate withdrawal of the inserter instrument when the implant is positioned in the space and engaged with the at least one vertebra.
264 Citations
32 Claims
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1. An instrument for positioning an implant in a space between adjacent vertebrae, comprising:
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a housing;
a pair of opposing guide members coupled to said housing, each of said pair of guide members including a body with an outer surface and an opposite guide surface and an elongated slot opening therebetween, said slot extending along said respective guide member and opening at a distal end thereof, said distal ends being positionable in the space between vertebrae;
a spreader positioned between said pair of guide members, said spreader including a central body and a pair of opposite wings extending therefrom, each wing including a body slidingly received in said slot of a corresponding one of said pair of guide members and an enlarged outer end; and
a drive member coupled to said spreader and operable to forwardly advance said spreader toward said distal ends of said guide members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for stabilizing a spinal disc space while preserving motion capabilities of the vertebrae adjacent the disc space, comprising:
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a pair of opposing guide members extending from a handle assembly, each of said pair of guide members including a body with an outer surface and an opposite guide surface and a spreader positioned between said pair of guide members;
an artificial disc implant including upper and lower plate members and an articulating member therebetween, said implant being positionable between said guide surfaces forwardly of and in engagement with said spreader with at least one anchoring member of the artificial disc implant extending through at least one of the opposing guide members; and
a drive member coupled to said spreader and operable to forwardly advance said spreader and said artificial disc implant toward distal ends of said guide members. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for inserting an implant in a space between adjacent vertebrae, comprising:
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providing an implant inserter comprising;
a housing;
a pair of opposing guide members coupled to the housing, the guide members each including an elongate central slot extending therealong and opening at a distal end of the guide member;
a spreader positioned between the pair of guide members;
a drive member coupled to the spreader and extending though the housing;
pivoting at least one of the pair of guide members away from the other of the pair of guide members;
positioning an implant on the other of the pair of guide members and forwardly of the spreader, the implant including a first anchoring member extending through the slot of the other guide member; and
pivoting the at least one guide member toward the other guide member to receive a second anchoring member of the implant through the slot of the at least one guide member. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification