Inter-vertebral connecting device for use in e.g. scoliosis, has two pedicle screws, coupled by rod, including V-shaped head with two branches, where branches are tightened to turn rod by ninety degrees

摘要

The device has two pedicle screws (1), coupled by a rod (6), including a V-shaped head with two branches. The branches are tightened to turn the rod by 90 degrees. The branches are then released to enable them to regain a rest position. A spring effect of the branches exercises a tightening effort with the rod on two points of each branch, to generate a butting on the branches based on a traction effort on the rod.