Patent ID: 8460389
Filing Date: 2013-06-11
Classification: A61F,Y10T

Abstract:
1. An allograft intervertebral implant sized and configured for implantation between first and second adjacent vertebra via a transforaminal lumbar interbody fusion technique, the implant comprising: an allograft body formed from at least two pieces of allograft bone, the body including a curved front surface, a curved back surface, a pair of ends separating the curved front and back surfaces, an upper surface and a lower surface wherein the upper and lower surfaces are sized and configured for contacting at least a portion of the first and second vertebrae, the curved front and back surfaces defining an outer perimeter of the implant; wherein the first allograft bone piece has the upper surface and an opposite interface surface, the interface surface configured to be substantially horizontal when the upper surface is substantially horizontal, the interface surface containing the first portion of a dovetail joint and the second allograft bone piece has the lower surface and an opposite interface surface, the interface surface configured to be substantially horizontal when the lower surface is substantially horizontal, the interface surface containing the second portion of the dovetail joint, the at least two pieces of allograft bone are joined together by the dovetail joint, the dovetail joint having a curved shape that substantially follows the contours of the curved front and back surfaces of the body.