Patent ID: 9138331
Filing Date: 2015-09-22
Classification: A61B,A61F

Abstract:
1. An intervertebral fusion with fixation device configured to be implanted between plural vertebrae, the device comprising: a spacer with an insertion wall, a trailing wall opposite to the insertion wall, a first lateral wall, a second lateral wall opposite to the first lateral wall, a top surface, and a bottom surface opposite to the top surface, the top and bottom surfaces each extending between the insertion wall and the trailing wall for contact with first and second vertebra respectively, wherein a first hole and a second hole extends through the spacer from the trailing wall toward the top and bottom surfaces respectively; a first cannulated bone screw including a first tip at a first leading end and a first head at an opposed first trailing end, the first leading end rigidly maintaining the first cannulated bone screw in a first preloaded position in the first hole along a first linear trajectory through threaded engagement of the first leading end inside the first hole, when in the first preloaded position the first tip not extending substantially above the top surface and the first head being spaced away from the spacer, the first cannulated bone screw configured to penetrate and secure to the first vertebra by advancing along the first linear trajectory to a first locked position in which the first head is advanced into the first hole; through direct engagement with a driving element and a second cannulated bone screw including a second tip at a second leading end and a second head at an opposed second trailing end, the second leading end rigidly maintaining the second cannulated bone screw in a second preloaded position in the second hole along a second linear trajectory that is different and divergent from the first linear trajectory through threaded engagement of the second leading end inside the second hole, when in the second preloaded position the second tip not extending substantially below the bottom surface and the second head being spaced away from the spacer, the second cannulated bone screw configured to penetrate and secure to the second vertebra by advancing along the second trajectory to a second locked position in which the second head is advanced into the second hole through direct engagement with the driving element.