초록 ▼

A spinal fixation device includes a threaded stud having an open-ended axial slot to straddle a rod of a vertebral support, and a bracket which is rotatable on the stud. A vertebra bone screw passes through an opening in a distal end of the bracket. The stud and bracket are locked in position relati

A spinal fixation device includes a threaded stud having an open-ended axial slot to straddle a rod of a vertebral support, and a bracket which is rotatable on the stud. A vertebra bone screw passes through an opening in a distal end of the bracket. The stud and bracket are locked in position relative to the rod by a nut. An insert within the slot bears against the rod and prevents the stud from being deformed by the force of the nut on the stud segments. The bracket can be rotated around the stud; and the stud can be rotated around and slid along the rod, to afford great adjustability and ease of attachment.

대표청구항 ▼

[ Having described the invention, what is claimed is:] [1.] A spinal fixation device comprising:a rod adapted to extend along one side of selected vertebrae;a bracket havinga first opening positioned to have said rod extend across said first opening, anda second opening;a stud having a head and a th

[ Having described the invention, what is claimed is:] [1.] A spinal fixation device comprising:a rod adapted to extend along one side of selected vertebrae;a bracket havinga first opening positioned to have said rod extend across said first opening, anda second opening;a stud having a head and a threaded shank, said shank extending rotatably through said first opening of said bracket with said head contacting one side of said bracket, and said shank having a longitudinal cross slot which extends toward said head with shank segments on opposite sides of said slot, said slot extending between said shank segments, said rod extending laterally through said slot in said stud and lying over an opposite side of said bracket;a fastener having a fastening shank extending through said second opening of said bracket, said fastener being rotatable with respect to said stud to move said fastener to a desired location for attachment into a vertebra at a position laterally displaced from said stud and on the one side of the selected vertebrae; anda nut threadable onto said shank segments of said stud for clamping said rod and said stud against rotation with respect to said bracket, thereby clamping said desired location of said fastener with respect to said stud.