Patent ID: 11957598
Assignee: LDR MEDICAL
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. The disc prosthesis of claim 1, wherein the at least one dummy hole passes through only a portion of the core, wherein the at least one engaging surface of the core is an upper surface of the core and the adjacent portion of the upper or lower plate is the lower surface of the upper plate, wherein the at least one dummy hole is centrally located on the upper surface of the core, wherein the core comprises polyethylene, wherein each of the upper surface of the upper plate and the lower surface of the lower plate comprise a porous biocompatible coating, and wherein the upper surface of the upper plate and the lower surface of the lower plate each comprise plural teeth proximal to opposing edges of the upper plate and the lower plate, respectively, and oriented to prevent sliding of the disc prosthesis prior to adhesion of the porous biocompatible coating to osseous tissue of an adjacent vertebrae of a patient.