Transcorporeal spinal decompression and repair systems and related methods
First Claim
1. A surgical system to form and repair an access channel through a vertebral body, the channel having an anterior surface entry and a posterior surface opening, the system comprising:
- a trajectory control tool comprising a fastening portion configured to detachably secure the tool to the anterior surface of the vertebral body, the tool further comprising a trajectory control sleeve configured to receive at least a portion of a bone cutting tool, the sleeve configured to guide the cutting tool to form the access channel with a prescribed trajectory from the anterior entry to the prescribed posterior opening, the fastening portion being laterally spaced apart from the sleeve by a predetermined distance on the anterior surface of the vertebral body; and
a repair implant comprising a plug portion and a fastening portion separated by the same predetermined distance as in the trajectory control tool, the plug configured to fill at least a portion of the access channel and the fastening portion configured to permanently retain the repair implant on the vertebral body,wherein the fastening portion of the repair implant comprises a through hole for receiving a bone screw having a screw head, the repair implant comprising a retainer movable between an unlocked position and a locked position, the retainer covering at least a portion of the screw head when in the locked position, andwherein the repair implant comprises a porous cage having a closeable cap, wherein the retainer also covers at least a portion of the cap when in the locked position.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method are provided for making an access channel through a vertebral body to access a site of neural compression, decompressing it, and repairing the channel to restore vertebral integrity. System elements include an implantable vertebral plate, a guidance device for orienting bone cutting tools and controlling the path of a cutting tool, a bone cutting tool to make a channel in the vertebral body, a tool for opening or partially-resecting the posterior longitudinal ligament of the spine, a tool for retrieving a herniated disc, an implantable device with osteogenic material to fill the access channel, and a retention device that lockably-engages the bone plate to retain it in position after insertion. System elements may be included in a surgery to decompress an individual nerve root, the spinal cord, or the cauda equina when compressed, for example, by any of a herniated disc, an osteophyte, a thickened ligament arising from degenerative changes within the spine, a hematoma, or a tumor.
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Citations
31 Claims
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1. A surgical system to form and repair an access channel through a vertebral body, the channel having an anterior surface entry and a posterior surface opening, the system comprising:
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a trajectory control tool comprising a fastening portion configured to detachably secure the tool to the anterior surface of the vertebral body, the tool further comprising a trajectory control sleeve configured to receive at least a portion of a bone cutting tool, the sleeve configured to guide the cutting tool to form the access channel with a prescribed trajectory from the anterior entry to the prescribed posterior opening, the fastening portion being laterally spaced apart from the sleeve by a predetermined distance on the anterior surface of the vertebral body; and a repair implant comprising a plug portion and a fastening portion separated by the same predetermined distance as in the trajectory control tool, the plug configured to fill at least a portion of the access channel and the fastening portion configured to permanently retain the repair implant on the vertebral body, wherein the fastening portion of the repair implant comprises a through hole for receiving a bone screw having a screw head, the repair implant comprising a retainer movable between an unlocked position and a locked position, the retainer covering at least a portion of the screw head when in the locked position, and wherein the repair implant comprises a porous cage having a closeable cap, wherein the retainer also covers at least a portion of the cap when in the locked position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for performing a procedure through a vertebral body overlaying a site in need of a medical procedure comprising:
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forming a screw hole in an anterior surface of the vertebral body; temporarily attaching a trajectory control sleeve on the anterior surface by inserting a fastener into the screw hole; inserting at least a portion of a bone cutting tool through the trajectory control sleeve; forming an access channel with a prescribed trajectory from an entry point on the anterior surface to an opening on the posterior surface of the vertebral body in the locale of the site in need of the procedure by removing bone with the bone cutting tool; removing the trajectory control sleeve from the vertebral body; performing the medical procedure through the access channel and the opening on the posterior surface of the vertebral body; installing a repair implant at least partially within the access channel; fastening the repair implant to the vertebral body using the previously formed screw hole, wherein the fastening step includes locking a retainer at least partially over a removable cap covering a porous cage of the repair implant. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for performing a procedure through a vertebral body overlaying a site in need of a medical procedure comprising:
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forming a screw hole in an anterior surface of the vertebral body; temporarily attaching a trajectory control sleeve on the anterior surface by inserting a fastener into the screw hole; inserting at least a portion of a bone cutting tool through the trajectory control sleeve; forming an access channel with a prescribed trajectory from an entry point on the anterior surface to an opening on the posterior surface of the vertebral body in the locale of the site in need of the procedure by removing bone with the bone cutting tool; removing the trajectory control sleeve from the vertebral body; performing the medical procedure through the access channel and the opening on the posterior surface of the vertebral body; installing a repair implant at least partially within the access channel; fastening the repair implant to the vertebral body using the previously formed screw hole, wherein the fastening step includes locking a single retainer at least partially over both a fastener and a removable cap covering a porous cage of the repair implant.
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Specification