Internal fixation system for spine

The utility model provides a spine internal fixation system which comprises a pedicle screw, a locker, a connecting rod and a connecting sleeve, the connecting rod is sleeved with the connecting sleeve, a connecting groove is formed in one end of the pedicle screw, the connecting sleeve is installed in the connecting groove, the outer surface of the connecting sleeve is a spherical surface, and the locker is used for locking the connecting sleeve and the connecting groove. And the connecting sleeve has radial elasticity along the connecting rod. The connecting rod of the internal fixing system for the spine and the screw rod of the pedicle screw can be adjusted at any angle within a certain range, and final locking can be achieved at any angle; the orthopedic angle can be kept unchanged after final locking, the connecting rod cannot be bent or the number of times of bending the connecting rod can be reduced to one time, and mechanical property reduction caused by internal tissue change is reduced. 本实用新型提供了一种脊