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US 9,044,342 B2Granted
Expandable interbody spacer
AssigneeGlobus Medical, Inc.
InventorsJonathan Perloff, Christopher Saville, Robert H Wriggins
Life of this patent
Estimating the term…
Abstract
The present invention relates to devices and methods for treating one or more damaged, diseased, or traumatized portions of the spine, including intervertebral discs, to reduce or eliminate associated back pain. The present invention relates to an expandable interbody spacer.
Claims26
An expandable interbody spacer comprising:
- a first jointed arm comprising a plurality of links pivotally coupled end to end, wherein at least one of the links of the first jointed arm comprises a first sidewall and a second sidewall, wherein the first sidewall and the second sidewall are opposed to one another, wherein the first sidewall is on an exterior surface of the first jointed arm, wherein the first sidewall is straight and transitions into a first rounded portion;
- and
- a second jointed arm comprising a plurality of links pivotally coupled end to end, wherein at least one of the links of the second jointed arm comprises a third sidewall and a fourth sidewall, wherein the third sidewall and the fourth sidewall are opposed to one another, wherein the third sidewall is on an exterior surface of the second jointed arm, wherein the third sidewall is straight and transitions into a second rounded portion, wherein the second jointed arm comprises an opening that extends through the second rounded portion, wherein the opening of the second jointed arm faces inward into the interbody spacer and does not extend all the way through the second jointed arm;
- a screw having a head and an elongate body extending axially through the expandable interbody spacer from a proximal end to a distal end, wherein the elongate body of the screw extends into the opening of the second jointed arm, and
- wherein the first jointed arm and the second jointed arm are interconnected at a proximal end of the expandable interbody spacer, wherein the first jointed arm and the second jointed arm are interconnected at a distal end of the expandable interbody spacer.
2 more elements
An expandable interbody spacer comprising:
- a first jointed arm comprising a plurality of links pivotally coupled end to end, wherein the plurality of links define upper and lower surfaces configured to engage adjacent vertebrae, wherein at least one of the links of the first jointed arm comprises a sidewall and a second sidewalk wherein the first sidewall opposes the second sidewall, wherein at least one of the first sidewall and the second sidewall is straight, wherein the first sidewall and the second sidewall each transition into a curved portion of the spacer;
- a second jointed arm comprising a plurality of links pivotally coupled end to end, wherein the plurality of links define upper and lower surfaces configured to engage adjacent vertebrae, wherein at least one of the links of the second jointed arm comprises a third sidewall and a fourth sidewalk, wherein the third sidewall opposes the fourth sidewall, wherein at least one of the third sidewall and the fourth sidewall is straight, wherein the third sidewall and the fourth sidewall each transition into a rounded portion of the spacer, wherein the second jointed arm comprises an opening that extends through the rounded portion of the spacer;
- and
- an elongate body extending axially through the expandable vertebral spacer from a proximal end to a distal end to assist in expansion of the expandable vertebral spacer,
- wherein the first jointed arm and the second jointed arm are interconnected at a proximal end of the expandable interbody spacer, and wherein the first jointed arm and the second jointed arm are interconnected at a distal end of the expandable interbody spacer.
2 more elements
An expandable interbody spacer comprising:
- a first jointed arm comprising a plurality of links coupled end to end, wherein at least one of the links of the first jointed arm comprises a first sidewall and a second sidewall, wherein the first sidewall and the second sidewall are opposed to each other, wherein the first sidewall is positioned on an exterior surface of the first jointed arm, wherein the first sidewall is straight and transitions into a curved portion of the spacer, wherein a bore extends through the first jointed arm;
- a second jointed arm comprising a plurality of links coupled end to end, wherein at least one of the links of the second jointed arm comprises a third sidewall and a fourth sidewall, wherein the third sidewall and the fourth sidewall are opposed to each other, wherein the third sidewall is positioned on an exterior surface of the second jointed arm, wherein the third sidewall is straight and transitions into a rounded portion of the spacer, wherein an opening extends through the rounded portion of the spacer, wherein the first and second jointed arms define a hollow interior portion;
- an elongate body extending axially through the expandable interbody spacer from a proximal end to a distal end, wherein the elongate body extends through the bore in the first jointed arm and into the opening in the second jointed arm, and
- wherein the first jointed arm and the second jointed arm are operably connected to one another.
1 more element
Dependencies are inferred from the claim text.