Patent ID: 8998918
Filing Date: 2015-04-07
Classification: A61B,A61F

Abstract:
1. An apparatus for the preparation and implantation of osteochondral allografts in human joints, said apparatus comprising: a cylindrical outer guide having a superior end and a contoured inferior end and a plurality of spaced apart axially disposed circumferential through holes extending from the superior end to the inferior end through said cylindrical outer guide for the insertion of guide wires therethrough for stabilizing said apparatus on donor bone for allograft core harvesting and on a recipient bone site for site preparation, said cylindrical outer guide having an axially oriented cylindrical central through aperture extending from the superior end to the inferior end through said cylindrical outer guide, wherein said contoured inferior end of said cylindrical outer guide includes at least two opposing curvatures configured to mate flush with the condyles of a joint having more than one condyle, said opposing curvatures are separated from one another by at least two opposing projections configured to fit into an intercondylar notch of the joint, and a cylindrical inner guide removably disposed in the cylindrical central through aperture of said cylindrical outer guide, said cylindrical inner guide having a superior end, a contoured inferior end, and a body portion having a cylindrical outer surface, and including an axially disposed central through aperture extending through said cylindrical inner guide from said superior end to said contoured inferior end of said cylindrical inner guide, the central through aperture is provided through said cylindrical inner guide for the placement of a central guide pin therethrough to stabilize both said cylindrical outer guide and said cylindrical inner guide upon surface contact with the articular surface of the joint and to identify the geometric center of both the donor osteocondral allograft core and the recipient site; wherein the contour of said inferior end of said cylindrical inner guide and the contour of said inferior end of said cylindrical outer guide are matched with joint-specific articular contours based on the specific anatomical location of the planned surgical procedure such that both of said inferior end of said cylindrical inner guide and said inferior end of said cylindrical outer guide are contoured to achieve full surface contact with both the donor bone site and the recipient bone site; and wherein said cylindrical outer guide includes a substantially planar superior rim and said cylindrical inner guide includes an expanded rim disposed around said body portion proximate said superior end of said cylindrical inner guide and which is seated on said superior rim when inserted into said cylindrical central through aperture of said cylindrical outer guide.