Multi-piece artificial spinal disk replacement device with multi-segmented support plates
OwnerJames Zucherman, Ken Hsuinventors
Life of this patent
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Abstract
A posterior approach for intervertebral disk replacement is provided. This technique is particularly suited for assembling a multi-piece artificial spinal disk replacement device in situ in order to alleviate discomfort associated with the spinal column.
Claims54
An implant for relieving pain associated with at least one of the spinal column and surrounding tissues and structures, which implant is positionable and formed in situ between a first vertebra and a second vertebra of the spinal column, wherein the first vertebra is located adjacent to and above the second vertebra and wherein individual pieces from which the implant is constructed are inserted through an opening created in a posterior region of an annulus, the implant comprising:
- a first end plate having a first support surface and a top surface opposite the first support surface wherein the first end plate comprises two or more first segments that are joined side by side;
- a second end plate having a second support surface and a lower surface opposite the second support surface wherein the second end plate comprises two or more second segments that are joined side by side;
- and
- a bearing member that is interposed between the first end plate and the second end plate wherein the bearing member has (i) a convex upper surface that is in contact with the first support surface and (ii) an opposite mounting surface that is in contact with the second support surface.
An implant for relieving pain associated with at least one of the spinal column and surrounding tissues and structures, which implant is positionable and formed in situ between a first vertebra and a second vertebra of the spinal column, wherein the first vertebra is located adjacent to and above the second vertebra and wherein individual pieces from which the implant is constructed are inserted through an opening created in a posterior region of the annulus, the implant comprising:
- a first end plate having a first support surface and a top surface opposite the first support surface wherein the first support surface defines a recess;
- a second end plate having a second support surface and a lower surface opposite the second support surface;
- and
- a bearing member that is interposed between the first end plate and the second end plate wherein the bearing member has (i) a convex upper surface that is positioned on the recess of the first support surface and (ii) an opposite mounting surface that is in contact with the second support surface.
Dependencies are inferred from the claim text.