Patent ID: 11938035
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An artificial disc replacement device, comprising:
a first endplate configured to be disposed against a first vertebrae in a spine and a second endplate configured to be disposed against a second vertebrae in the spine;
a core member disposed between the first endplate and the second endplate, the core member having a curved engaging surface for engaging the first endplate;
the core member including a sagittal plane that separates the core member into a first lateral side and a second lateral side;
the core member also including a coronal plane that separates the core member into an anterior side and a posterior side;
wherein the curved engaging surface includes a curved boundary that extends within a first plane that is parallel with the sagittal plane;
wherein the curved boundary has a first arc radius along an anterior portion disposed on the anterior side of the core member;
wherein the curved boundary has a second arc radius along a posterior portion disposed on the posterior side of the core member, wherein the second arc radius is substantially different from the first arc radius;
wherein the first endplate has a recess that accommodates the curved engaging surface of the core member; and
wherein the recess has a constant arc radius within the sagittal plane that is substantially similar to the first arc radius to enable forward translation and tilting of the first endplate relative to the second endplate during flexion.