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

Claim 18:
19. A prosthetic intervertebral disc comprising:
a first endplate;
a second endplate; and
a compressible core member positioned between said first and second endplates, said compressible core member having at least one engaging surface with a plurality of grooves that are interconnected via at least one dummy hole, wherein the at least one dummy hole passes through only a portion of the compressible core member, wherein the at least one engaging surface of the compressible core member is an upper surface of the compressible core member adjacent to a lower surface of the first endplate, wherein the at least one dummy hole is centrally located on the upper surface of the compressible core member, wherein the compressible core member comprises polyethylene, wherein each of an upper surface of the first endplate and a lower surface of the second endplate comprise a porous biocompatible coating, and wherein the upper surface of the first endplate and the lower surface of the second endplate each comprise plural teeth proximal to opposing edges of the first endplate and the second endplate, respectively, and oriented to prevent sliding of the prosthetic intervertebral disc prior to adhesion of the porous biocompatible coating to osseous tissue of an adjacent vertebrae of a patient, and
wherein said first endplate and said second endplate are separated by a first distance, and wherein said prosthetic intervertebral disc is expandable between a contracted condition and an expanded condition, said first distance being greater in said expanded condition than in said contracted condition.