Patent ID: 9078768
Filing Date: 2015-07-14
Classification: A61F

Abstract:
1. A spinal fusion implant for insertion into an implantation space formed into two adjacent vertebral bodies of a human spine, said implant comprising: a leading end for insertion into the implantation space, a trailing end opposite said leading end, a central longitudinal axis extending through said leading and trailing ends, a length between said trailing end and said leading end along the central longitudinal axis, said leading end being configured to facilitate insertion between the two adjacent vertebral bodies, and said trailing end being sized and configured to fit into the implantation space between the two adjacent vertebral bodies; opposed upper and lower arcuate surfaces connecting said leading and trailing ends, said upper and lower arcuate surfaces including at least one opening, said openings being in communication with one another to permit for the growth of bone from adjacent vertebral body to adjacent vertebral body through said implant, said upper arcuate surface, when said implant is positioned in the implantation space, being oriented toward and facing an upper vertebral body of the two adjacent vertebral bodies, and said lower arcuate surface, when said implant is positioned in the implantation space, being oriented toward and facing a lower vertebral body of the two adjacent vertebral bodies; and a medial side having a medial side surface and a lateral side having a lateral side surface, said medial side being configured for placement adjacent a midline of the implantation space extending between anterior and posterior aspects of the human spine, said implant having first width and a second width from said medial side to said lateral side in a first plane, the first plane extending through the central longitudinal axis, through said medial and lateral sides, and through said leading and trailing ends, said implant having a maximum height from said upper arcuate surface to said lower arcuate surface in a second plane, the second plane bisecting the length of the implant along the central longitudinal axis, being perpendicular to the central longitudinal axis, and extending through said upper and lower arcuate surfaces and through said medial and lateral sides, the first width of said implant extending in the second plane and bisecting the maximum height of said implant, the second width of said implant extending in a third plane, the third plane being positioned directly adjacent said leading end, being perpendicular to the central longitudinal axis, and extending through said upper and lower arcuate surfaces, the medial side surface having a first length in the first plane from the third plane to the trailing end, the lateral side surface having a second length in the first plane from the third plane to the trailing end, the first length of said medial side surface being greater than the second length of said lateral side surface, said trailing end being at least in part arcuate in the first plane across more than half of the width of said implant and being arcuate in the first plane proximate an intersection of the first plane with a fourth plane through the central longitudinal axis, through said leading and trailing ends, and through said upper and lower arcuate surfaces, the fourth plane being perpendicular to the first, second, and third planes, said upper and lower arcuate surfaces being at least in part arcuate in the second plane adjacent the maximum height of the implant and adjacent the intersection of the second and fourth planes, and said implant having a maximum length along said medial side surface measured from the third plane to said trailing end.