| 摘要 |
An interbody spinal fusion implant for insertion across the surgically corrected height of a disc space between adjacent vertebral bodies of the human spine comprises a body and bone engaging means. <??>To improve such spinal fusion implant that it is capable of maintaining anatomic alignment and lordosis of two adjacent vertebrae during the spinal fusion process and is also self-stabilizing within the spine, the body has a mid-longitudinal axis, an insertion end, a trailing end, a length between said ends, an upper portion adapted to be oriented toward one of the adjacent vertebral bodies, a lower portion adapted to be oriented toward the other of the adjacent vertebral bodies, and a height between said upper portion and said lower portion transverse to the length, the height of the upper and lower portions along a portion of the length of said implant being constant, said upper and lower portions each having at least one opening for permitting the growth of bone from adjacent vertebral body to adjacent vertebral body through the implant, and said bone engaging means extends from at least a portion of said upper and lower portions adapted to engage said implant to the adjacent vertebral bodies of the spine when implanted in the spine, said bone engaging means having a maximum height that increases from one of said ends to the other of said ends along at least a portion of said body where the height of the upper and lower portions is constant, said implant being made of a material appropriate for human implantation. <IMAGE> |
