Patent ID: 7601173
Filing Date: 2009-10-13
Classification: A61F

Abstract:
1. An intervertebral implant for insertion between adjoining vertebra, said implant comprising: a three dimensional body including a superior surface sized and configured for contacting at least a portion of one of said adjacent vertebrae, and an inferior surface sized and configured for contacting at least a portion of said other of said adjacent vertebrae; said three dimensional body further comprising: a first part formed of cortical bone and a second part formed of cancellous bone, wherein said first and second parts are connected to one another, wherein substantially the entire superior and inferior surfaces of the first part comprises a plurality of teeth, and wherein at least one of said superior and inferior surfaces of said second part includes a first portion and a second portion, wherein said first portion includes a plurality of teeth and said second portion is substantially smooth, said toothed first portion of said second part defining a first surface area and said substantially smooth second portion of said second part defines a second surface area, said second surface area being greater than said first surface area; wherein said substantially smooth superior and inferior surfaces of said second portion of said second part define an upper plane and a lower plane, respectively, said plurality of teeth formed on said superior and inferior surfaces of said first part having a tip portion, said tip portion being sized and configured to be at or below said upper and lower planes; and wherein said first and second parts are connected by at least one dovetail joint, wherein said dovetail joint includes a male portion and a female portion, said male portion being receivable within said female portion, each of said first part and said second part further comprising at least one hole extending partially therethrough and receiving at least one pin to prevent said first part from moving with respect to said second part; at least one of said holes passes through said male and female portions of said dovetail joint so that at least one of said pins passes through said dovetail joint to secure said first and second parts to one another, wherein said male portion of said dovetail joint is on said first part and said female portion of said dovetail joint is on said second part.