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US 10,117,679 B2Granted
Adjustable height pedicle screw
AssigneeGlobus Medical, Inc.
InventorsAshok Biyani, Gary Durivage
Life of this patent
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Abstract
Described herein is a pedicle screw for use in the thoracolumbar spine where the height can be adjusted intra-operatively before or after installation member of the longitudinal member. The pedicle screws with adjustable height may be made with a monoaxial or polyaxial configuration. The height of the pedicle screw can be lengthened or shortened.
Claims12
A pedicle screw for spinal fixation, comprising:
- a longitudinal screw comprising a threaded portion and a variable height engagement ramp disposed as an angled top surface of the longitudinal screw located at a proximal end of the longitudinal screw;
- and
- an adjustable height component having an angled bottom surface and disposed on top of the variable height engagement ramp in slidable contact with the angled top surface, wherein the adjustable height component is capable of being adjustably affixed to the longitudinal screw, and capable of being axially adjusted intraoperatively with respect to the longitudinal screw,
- wherein the angled bottom surface and the angled top surface are in non-threaded contact and slidable with respect to each other to adjust a height of the adjustable height component
- wherein the longitudinal screw includes an internally threaded portion capable of accepting a polyaxial screw or a monoaxial screw to affix the adjustable height component to the longitudinal screw,
- wherein the adjustable height component is configured for accepting a rod compression screw.
3 more elements
Dependencies are inferred from the claim text.