Hybrid intervertebral disc system
AssigneeSDGI Holdings, Inc.
InventorHai H. Trieu
Life of this patent
Estimating the term…
Abstract
A vertebral implant for interposition between two vertebral endplates comprises a first endplate assembly for engaging a first vertebral endplate, a second endplate assembly for engaging a second vertebral endplate, and a first flexible core component interposed between the first and second endplate assemblies. The first flexible core component comprises first and second end portions. The first end portion is coupled to the first endplate assembly to prevent translation of the first end portion with respect to the first endplate assembly, and the second end portion is pivotable with respect to the second endplate assembly.
Claims27
A vertebral implant for interposition between two vertebral endplates comprising:
- a first endplate assembly for engaging a first vertebral endplate;
- a second endplate assembly for engaging a second vertebral endplate;
- and
- a first flexible core component interposed between the first and second endplate assemblies, the first flexible core component comprising a first end portion and a second end portion,
- wherein the first endplate assembly comprises a first circumferential groove for coupling with a complementary first circumferential ridge of the first end portion, and
- wherein the coupling of the first end portion to the first endplate assembly restricts lateral translation of the first end portion with respect to the first endplate assembly while permitting pivoting motion between the first end portion and the first endplate assembly and wherein the second end portion is pivotable with respect to the second endplate assembly.
A vertebral implant for interposition between two vertebral endplates, the vertebral implant comprising:
- a first endplate assembly comprising a first vertebral endplate contact surface and a first interior surface;
- a second endplate assembly comprising a second vertebral endplate contact surface and a second interior surface;
- a flexible core component interposed between the first and second interior surfaces, the flexible core component comprising a first end portion and a second end portion,
- wherein the first end portion comprises a circumferential ridge for coupling to a circumferential groove of the first interior surface to prevent translation of the first end portion with respect to the first endplate assembly, and
- wherein the second end portion is pivotable with respect to the second endplate assembly.
A hybrid vertebral implant comprising:
- first and second opposing endplate assemblies, each endplate assembly comprising an engagement surface having a circumferential undercut groove;
- and
- an elastically deformable core component comprising opposite end surfaces each having a circumferential ridge configured to engage the respective circumferential undercut grooves,
- wherein each engagement surface prevents linear displacement of the respective end surface while permitting rotational motion between the respective engagement and end surfaces.
Dependencies are inferred from the claim text.