SURGICAL DEVICE FOR CORRECTING DEFORMATIONS IN THE SPINAL COLUMN

摘要

The device includes tubular elements capable of being temporarily fastened at the level of pedicle screw heads arranged to be connected by an implantable curved rod, and at least one rod intended to be movably inserted into slots of each tubular element, to align them for the correction of the spinal column by translation, tilting, and rotation of the vertebrae in the three planes of space. Each tubular element is configured in such a way that it can be coupled with the outside of the pedicle screw heads. The rod forms an alignment and handling rod, being capable of acting, as it moves, on rings for simultaneously displacing the curved rod. Each ring is assembled with the ability to slide along the tubular element, and to be height-adjustable to compensate for dimensional deviations between the alignment and handling rod and the curved rod.

主权项

1- A surgical device for correcting deformations in a spinal column comprising tubular elements configured for being temporarily attached at a level of pedicle screw heads arranged to be connected by an implantable curved rod, at least one rod configured to be movably inserted into slots of each tubular element to align the tubular elements for correction of said column by translation, tilting, and rotation of vertebrae in three planes of space, each tubular element being configured to be coupled to an outside of the pedicle screw heads, the at least one rod forming an alignment and handling rod acting, as it moves, on means for simultaneously displacing the curved rod, previously inserted into the slots towards the pedicle screw heads, another rod being coupled to the outside of the aligned tubular elements to enable removal of the alignment and handling rod in order to insert into each tubular element a member for actuating a nut for fastening the curved rod in each of the pedicle screw heads,
wherein the means for displacing the implantable curved rod comprises a ring assembled with the ability to slide along the tubular element, said ring being height-adjustable to compensate for dimensional deviations between the alignment and handling rod and the curved rod.