Navigational device to guide placement of spinal screw
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United States of America
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May 3, 2022
Grant Date -
Nov 25, 2021
app pub date -
Dec 13, 2019
filing date -
Dec 13, 2019
priority date (Note) -
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Abstract
A navigational device or jig is provided for accurately guiding the drilling of holes for screws or guidewires for spinal surgery. The jig has a three-point attachment to a vertebra with a jaw that contacts the pars interarticularis and a clip that contacts or attaches to the spinous process. A drill guide support arm moveable laterally with three axes of rotation is provided. The drill guide is a channel that directs a drill bit to a desired location and trajectory. The holes created with the drill bit in a vertebra are used for the insertion of screws or guidewires for any of various procedures requiring screws implanted in a vertebra. In particular, the inventive jig is useful for the precise placement and control of drilled holes for cortical bone trajectory screw placement.
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