Spinal column correction bar with elastic structure

Abstract

The invention relates to a spinal column correction bar with an elastic structure, and belongs to the technical field of internal fixation of a spinal surgical implant. The spinal column correction bar is particularly used for matching with a spinal pedicle screw to carry out an implant internal fixation operation for spinal surgery. The spinal column correction bar comprises a short bar, a long bar, a connecting bolt and a connecting block, wherein an elastic sleeve is arranged at one end of the short bar; elastic grooves are cut on the circumference of the elastic sleeve, and are all communicated by virtue of round holes; an inner hole is formed on one end of the long bar and used for connecting the short bar, and an external thread of the inner hole is connected with an internal thread of the connecting block; a rectangular cylindrical boss is arranged in the middle of the round bar shaped connecting bolt; a section of external thread is arranged on the tail end of the connecting bolt, and is matched with a thread hole at the hole bottom in the elastic sleeve of the short bar; a section of internal thread is arranged at the outer end of a stepped through hole of the connecting block, and is connected with the section of external thread at one end of the long bar; and a section of external thread is arranged on the connecting block, and is matched with the internal thread in the elastic sleeve of the short bar.

Description

technical field [0001] The invention relates to a spinal correction rod with an elastic structure, which belongs to the technical field of internal fixation of spinal surgical implants. It is especially used for internal fixation of spinal surgical implants with spinal pedicle screws. Background technique [0002] The principle of treatment for spinal surgical diseases is to relieve the compression of the nervous system, restore biomechanical balance and long-term stability, thereby improving the quality of life of the patient. The traditional pedicle screw internal fixation in spinal surgery uses cylindrical spinal orthopedic rods, which can effectively replace the diseased vertebral body to withstand the changes in the biomechanical force of the spine, restore the biomechanical balance of the lesion and relieve the pain. The nervous system is compressed, but long-term clinical results show that since the cylindrical spinal orthopedic rod is rigidly fixed, after implantati...

AI Technical Summary

Problems solved by technology

The traditional pedicle screw internal fixation in spinal surgery uses cylindrical spinal orthopedic rods, which can effectively replace the diseased vertebral body to withstand the changes in the biomechanical force of the spine, restore the biomechanical balance of the lesion and relieve the pain. The nervous system is compressed, but long-term clinical results show that since the cylindrical spinal orthopedic rod is rigidly fixed, after implantation into the human body, the force originally carried by the lesion must be shared by adjacent segments, and once the fusion of the lesion fails, it will face serious problems. The risk of reoperation after adjacent segment degeneration and fusion failure

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