Patent ID: 8343225

Claim:
A patch kit for covering a perimeter edge conditioned aperture associated with a skull, said kit comprising: a plasticized body exhibiting an outer perimeter extending edge profile which matches an inner extending profile associated with a reconditioned edge of the skull; said extending edge profile further comprising a first edge proximate portion and a second outermost and reduced thickness portion separated by a shoulder so as to define an underside stepped configuration, the inner perimeter extending edge profile of the skull exhibiting a corresponding outer skull edge portion, an inner stepped skull portion and an intermediate shoulder defining a mating stepped configuration such that the skull edge profile is adapted to mate with said extending edge profile of said patch; a fastener extending through said edge profile for securing said body to the skull; pluralities of undercut growth promoting portions extending from said first and second portions associated with said underside stepped configuration and which, upon mating with the stepped skull profile, serving to increase a bond line strength established between the bone and patch as well as to promote more even alignment and seating of the patch within the reconditioned and inner extending skull profile; and said undercut growth promoting portions further comprising spherical shaped portions mounted to narrowed stem supporting portions extending from underside locations of said first and second portions.