Spinal osteosynthesis device

DETAILED DESCRIPTION An object of the present invention is therefore to provide an improvement in devices of the above-outlined type and to offer a solution for adjustment of the implants in spinal surgery as well as an inspiration for the detailed analysis of the formation and the character of the curvature scoliosis.
A further object of the invention is to eliminate the difficulties connected with the devices applied currently and to provide a device which is simple to produce as well as to implant, which can efficiently be corrected during implantation without the need of introducing the implants in the spinal channel and which enables the change of surgical orientation by correcting the deformations.
The mobility of a part of the spine is sacrificed only to an extent which depends on the degree of the deformation.
The device should also enable anchoring or fixing the implants within the costotransversal space, above the dorsal part in order to obtain an inclination, rotation, a forward pull or backward push with respect to the vertebrae as well as compression or distraction within the correct axis of the spine and anchoring within the proper upper and lower limits.
These objects and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the spinal osteosynthesis device includes a plurality of implants, each having a yoke and an anchoring arrangement carried by the yoke for securing the implant to a selected vertebra.
The device further has a connecting bar crossing each yoke; and a plurality of clamps tightening the bar to each yoke.
Each clamp has a clamp body; and a pair of generally parallel-oriented claws spaced from one another by a slot and extending from the clamp body.
The claws partially surround the respective yoke.
The clamp body carries a tightening arrangement for rocking the clamp body about the connecting bar to tilt the claws toward the connecting bar so that the yoke is clamped thereagainst.
In order to achieve a proper straightening and support of the spine, the implants are provided with: hooks bent in the same sense, hooks bent in opposite directions, the left hook being directed upwardly and hooks bent in opposite directions, the right hook being directed upwardly