SCOLIOSIS CORRECTION SYSTEM HAVING SINGLE CENTRAL ROD

摘要

Provided is a scoliosis correction system having a single central rod. The correction system comprises: a single correction rod (1); n gears (2) fitted over the single correction rod (1); and n arc-shaped bridges (3). Each arc-shaped bridge (3) comprises: an annular ring body (30) having a lateral opening (301), and bridge bodies (31, 32) connected to the top surface of the annular ring body (30) and extending towards the outer side of the annular ring body (30). The annular ring body (30) comprises a toothed inner wall (303) engaged with one gear (2) and used for implementing unidirectional locking, and locking grooves (305) formed outside the toothed inner wall (303) and being parallel to the toothed inner wall (303). An insertion plate (5) for locating the gear (2) is detachably clamped in the locking grooves (305). A pedicle screw (4) is provided at the end portion of each of the bridge bodies (31, 32). Two pedicle screws (4) are provided on the two bridge bodies (31, 32). The axes of the two pedicle screws (4) are intersected to form an included angle of 5-30°. The correction system enables a part between upper and lower vertebral bodies to freely extend and grow, thereby completely reserving the physiological function of spine growth.