Combined spinal interbody and plate assemblies

摘要

A spinal implant assembly combines a spinal interbody spacer with a spine plate. The combined spacer and plate assembly provides stabilization and torsional resistance to promote fusion of adjacent vertebrae. The spacer is configured for placement within an intervertebral space between the adjacent vertebrae previously occupied by a spinal disc. The plate is configured for attachment to anterior sides of the adjacent vertebrae. Translation of the spinal plate allows it to be affixed to the vertebrae in various positions and/or allow movement post installation. In one form, the plate is defined by first and second spine plate or plate portions that are coupled to one another to allow rotation about each other. Ends of the first and second spine plates are received in/by the interbody spacer, while a pin extends through the interbody spacer to fix the first and second spine plates to the interbody spacer.

主权项

1. A spinal implant comprising:
a spacer formed of a body configured for reception and retention between a first vertebra and second vertebra, the body having a first lateral side, a second lateral side opposite the first lateral side, a first side extending between the first and second lateral sides and configured to engage the first vertebra, a second side extending between the first and second lateral sides opposite the first side and configured to engage the second vertebra, and a cavity defined and substantially enclosed by the first and second sides and the first and second lateral sides, the body defining a first axis; a pin extending through the cavity of the spacer between the first and second lateral sides and defining a second axis generally perpendicular to the first axis; a spine plate coupled to the spacer, the spine plate comprising:
a first spine plate portion having a first end and a second end, the first end having a bone screw bore to allow attachment of the first spine plate portion to the first vertebra via a first bone screw, and the second end extending into the cavity between the first and second sides, and coupled to the pin; and a second spine plate portion having a first end and a second end, the first end having a second bone screw bore to allow attachment of the second spine plate portion to the second vertebra via a second bone screw, and the second end extending into the cavity between the first and second sides, and coupled to the pin; wherein the first spine plate portion and second spine plate portion are configured for translational movement along the first axis and rotational movement about the second axis, wherein at least the translational movement provides adjustable positioning of the first and second spine plate portions relative to the spacer along the first axis to allow the spacer to be affixed to the first and second vertebrae in a plurality of positions, wherein the translational movement and the rotational movement of the second ends of the first and second spine plate portions are contained within the spacer between the first and second sides and the first and second lateral sides.