Fixing device for repairing broken wall of spinal pedicle

Abstract

A fixing device for repairing a broken wall of a spinal pedicle comprises an expansion fixing sleeve and a head film sleeve, wherein the head film sleeve is used for sealing the head of the expansion fixing sleeve; a pedicle screw comprises a pedicle screw fixing threaded section and a pedicle screw fixing seat; the pedicle screw fixing seat is provided with a pedicle screw fixing seat threaded hole and a pedicle screw fixing seat connecting slot; the pedicle screw fixing seat threaded hole is provided with a countersunk head fixing nut; the expansion fixing sleeve is provided with an eccentric threaded hole; the pedicle screw fixing threaded section is matched with the eccentric threaded hole; the expansion fixing sleeve comprises a expansion fixing sleeve body, a first expansion plate and a second expansion plate; the first expansion plate and the second expansion plate are arranged on the head of the expansion fixing sleeve body; a broken wall repairing block which is projected outwards is arranged on a side part of the expansion fixing sleeve, therefore, the expansion fixing sleeve is firmly fixed on a spine; the pedicle screw is mounted firmly; and the circumstance that the expansion fixing sleeve cannot be fixed firmly due to loosening of the pedicle screw is avoided.

Description

technical field [0001] The invention relates to a rescue fixation device for vertebral pedicle wall breakage. Background technique [0002] Spinal fractures, spinal tumors, cervical spondylosis, cervical spinal stenosis, lumbar disc herniation, lumbar spinal stenosis, lumbar segmental instability, lumbar slippage and other diseases are very common in clinical practice. These diseases can cause pain, inability to stand, neck and shoulder pain, low back pain, pain and numbness of lower limbs, intermittent claudication, and even clinical symptoms of defecation and sexual dysfunction, which seriously affect the life, health and quality of life of patients. Treatment of these patients often requires spinal immobilization techniques. [0003] In 1959, Boucher et al first applied pedicle screw fixation to the spine. In 1970, clinical cases were reported successively in France and Switzerland. Since the 1980s, pedicle screw instruments have been widely accepted through continuous...

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of the operation, more and more complications have been found, one of which is that the screw is loose, the fixation is not firm, or the position of the screw is not good for the first time during the operation, and it cannot be adjusted. Difficult, the screw cannot be removed after the bone cement is driven in

Especially for patients with osteoporosis, it is more difficult to adjust the screw, and the screw holding force is worse. Once misplaced, the adjustment is difficult. Patients with pedicle cortical bone perforation, such as patients with inner wall damage, will not be able to use pedicle screws for fixation treat

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