Patent ID: 6030389
Filing Date: 2000-02-29
Classification: A61B

Abstract:
A spinal fixation system, comprising:a plate for stabilizing a spine, the plate comprising a borehole therethrough;a bone screw comprising a bone screw head and a bone screw shank;a ring positionable within the borehole and configured to receive the bone screw head;a locking member sized to fit at least partially within the ring;wherein during use, the bone screw head is essentially contained within the borehole and the bone screw shank extends from the borehole to couple a plate to a bone, and further wherein the ring is rotatable within the borehole to allow the bone screw shank to be positioned at a plurality of angles substantially oblique to the plate during use, and further wherein the locking member is configured to exert an expanding force against the ring during use, effective to substantially fix the bone screw with respect to the plate.