Artificial spinal disk prosthesis

摘要

The present invention provides an intervertebral endoprosthesis disc for surgical implantation between two vertebrae having an endoprosthesis body comprising an anterior region and a posterior region designed to be positioned between a first vertebra and a second vertebra with a first and second movable insert positioned rotatably in anterior cavities and is rotatable to adjust the fasteners.

主权项

1. An intervertebral endoprosthesis disc for surgical implantation between two vertebrae comprising:
an endoprosthesis body comprising an anterior region and a posterior region designed to be positioned between a first vertebra and a second vertebra; at least a first anterior cavity and a second anterior cavity positioned in the anterior region; a first movable insert having a first fastener aperture and positioned rotatably in the first anterior cavity, wherein the first movable insert is rotatable in the first anterior cavity; and a second movable insert having a second fastener aperture and positioned rotatably in the second anterior cavity, wherein the second movable insert is rotatable in the second anterior cavity independent of the first movable insert; wherein the first movable insert and the second movable insert are cylindrical and are smaller in length than the first and second anterior cavity to allow lateral motion in addition to rotational movement; and wherein a first insertion angle of a first fastener extending through the first fastener aperture may be adjusted by rotating the first movable insert and a second insertion angle of a second fastener extending through the second fastener aperture may be adjusted by rotating the second movable insert.