Bone anchor systems
First Claim
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1. A bone anchor system for establishing an attachment site along an endplate adjacent an intervertebral disc, comprising:
- a bone anchor configured for insertion into an outer surface of a vertebral body and for presenting an attachment site along an endplate of the vertebral body, wherein the outer surface is offset at an angle substantially perpendicular to the endplate, the bone anchor comprising;
a neck,wherein said neck has a length defined by a sharpened leading edge and a trailing end,wherein said neck comprises an attachment site along at least a portion of its length,wherein said attachment site is configured to be coupled to a prosthetic device;
a bone anchoring region extending at least substantially perpendicular from the neck,wherein the bone anchoring region comprises a sharpened leading edge,wherein the sharpened leading edge of the bone anchoring region is configured for advancement within the outer surface of the vertebral body while the attachment site is simultaneously advanced along and across the endplate,wherein said attachment site is configured to extend above the endplate while the bone anchoring region is advanced within the outer surface of the vertebral body, andwherein the anchoring region is configured for countersinking within said outer surface such that no portion of said bone anchor lies beyond said outer surface of the vertebral body.
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Abstract
Embodiments of the invention relate generally to tissue anchors and methods of delivering same to the intervertebral disc or other sites within the body. In some embodiments, the anchors provide pull-out resistance, stability and/or maximize contact with tissue involving a minimum amount of penetration. In some embodiments, delivery methods are minimally invasive and include linear, lateral, and off-angle implantation or driving of anchors along, against or within tissue surfaces.
691 Citations
20 Claims
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1. A bone anchor system for establishing an attachment site along an endplate adjacent an intervertebral disc, comprising:
a bone anchor configured for insertion into an outer surface of a vertebral body and for presenting an attachment site along an endplate of the vertebral body, wherein the outer surface is offset at an angle substantially perpendicular to the endplate, the bone anchor comprising; a neck, wherein said neck has a length defined by a sharpened leading edge and a trailing end, wherein said neck comprises an attachment site along at least a portion of its length, wherein said attachment site is configured to be coupled to a prosthetic device; a bone anchoring region extending at least substantially perpendicular from the neck, wherein the bone anchoring region comprises a sharpened leading edge, wherein the sharpened leading edge of the bone anchoring region is configured for advancement within the outer surface of the vertebral body while the attachment site is simultaneously advanced along and across the endplate, wherein said attachment site is configured to extend above the endplate while the bone anchoring region is advanced within the outer surface of the vertebral body, and wherein the anchoring region is configured for countersinking within said outer surface such that no portion of said bone anchor lies beyond said outer surface of the vertebral body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A bone anchor system for establishing an attachment site along an endplate adjacent an intervertebral disc, comprising:
a bone anchor configured for insertion into an outer surface of a vertebral body and for presenting an attachment site along an endplate of the vertebral body, wherein the outer surface is offset at an angle substantially perpendicular to the endplate, the bone anchor comprising; a neck having a sharpened leading edge, wherein said neck comprises an attachment site configured for coupling to a tissue containment member; a bone anchoring region extending from an end portion of the neck, wherein the bone anchoring region comprises a sharpened leading edge, wherein the sharpened leading edge of the bone anchoring region is configured for advancement within the outer surface of the vertebral body while the attachment site is simultaneously advanced along and across the endplate, wherein said attachment site is configured to extend above the endplate while the bone anchoring region is advanced within the outer surface of the vertebral body, and wherein the anchoring region is configured for countersinking within said outer surface such that no portion of said bone anchor lies beyond said outer surface of the vertebral body. - View Dependent Claims (18, 19, 20)
Specification